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Auteur : Grafiati
Publié le 11 mars 2023

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1

Calderón, Carlos Valencia. « Neuronavigation as a Tool for Pre-Surgical Planning in Refractory Epilepsy Surgery ». Neuroscience and Neurological Surgery 5, no 2 (17 décembre 2019) : 01–10. http://dx.doi.org/10.31579/2578-8868/095.

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Summary Epilepsy is one of the most frequent chronic neurological pathologies, with high incidence and prevalence worldwide. A third of these patients are resistant to treatment, which is known as refractory epilepsy. Most of these patients suffer epilepsy secondary to epileptogenic lesions, where the surgery is the only treatment that could cure epilepsy. The goal of epilepsy surgery is to remove the epileptogenic area with preservation of eloquent areas, and here the surgical experience, the neuroimaging technology and the availability of image-guided surgery systems known as a neuronavigator plays a key role. Objectives: To demonstrate the usefulness of neuronavigation in pre-surgical planning and in the surgery of refractory epilepsy. Method: A cross-sectional and analytical descriptive study was conducted based on 47 surgeries performed (12 resective, 32 palliative and 3 diagnostic) in patients with refractory epilepsy and mean age of 9.93 years (SD 4.1). In 27 patients (57.44%) the neuronavigator was used. In the group of patients operated with neuronavigation, the surgical time decreased by 47.17 minutes (p = 0.022), the amount of bleeding by 111.41 milliliters (p = 0.011) and the days of hospitalization by 6.68 days (p = 0.005), compared with the group operated without neuronavigation. Complications in the neuronavigation group were 29.63% compared to 65% in the group operated without neuronavigation (p = 0.034). Conclusions: In our series, the use of the neuronavigator in the planning and development of the surgery had a significant impact by reducing the amount of bleeding lost, the surgical time, the days of hospitalization, and the post-surgical complications.
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Simoes-Franklin, Christina, Seamus Looby et Donncha O'Brien. « Advanced neuroimaging for pre-surgical planning : Implementation challenges ». Physica Medica 28, no 4 (octobre 2012) : 335. http://dx.doi.org/10.1016/j.ejmp.2012.06.015.

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Michalíková, Monika, Teodor Tóth, Viktória Rajťúková et Jozef Živčák. « The Digital Pre-Operative Planning of Hip Surgical Interventions ». Solid State Phenomena 199 (mars 2013) : 350–55. http://dx.doi.org/10.4028/www.scientific.net/ssp.199.350.

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Computer technology has many applications in different fields of industry, health care and medicine. This encompasses paper-based information processing as well as data processing machines (Hospital information system or Clinical information system) and image digitalization of a large variety of medical diagnostic equipment (e.g. computer images of X-ray, MR, CT). The aim of the computer technology in medicine is to achieve the best possible support of patient care, preoperative surgery planning and administration by electronic data processing. At the present time in many countries of the worlds preoperative planning of interventions for lumbar joint is realized with caliper, protractor, plastic templates and x-ray images. Orthopaedic surgeons use transparent template radiographs as part of pre-operative planning in order to gauge the suitability and correct size of an implant. The newly developed CoXaM software offers a simple solution of the problems by using the digital x-ray images and handmade transparent plastic templates. The CoXaM software was developed in Visual Studio 2005 in the Visual C++ programming language at the Department of Biomedical Engineering and Measurement at the Faculty of Mechanical Engineering, Technical University of Kosice. The software was designed for pre-operative planning and helps to determine on the X-ray image a length dimensions, a center of rotation, an angle values. It enables the digitalization of plastic templates from several producers, which will assess the suitability of the type of implant.
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Ho, Harvey, Adam Bartlett et Peter Hunter. « Virtual liver models in pre-surgical planning, intra-surgical navigation and prognosis analysis ». Drug Discovery Today : Disease Models 22 (2016) : 51–56. http://dx.doi.org/10.1016/j.ddmod.2017.09.003.

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De Paolis, Lucio Tommaso, Marco Pulimeno et Giovanni Aloisio. « Advanced Visualization and Interaction Systems for Surgical Pre-operative Planning ». Journal of Computing and Information Technology 18, no 4 (2010) : 385. http://dx.doi.org/10.2498/cit.1001878.

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N.Kumar, S., et M. Marsaline Beno. « Segmentation of Lung Lobes and Fissures for Surgical Pre Planning ». International Journal of Computer Applications 51, no 9 (30 août 2012) : 12–16. http://dx.doi.org/10.5120/8068-1461.

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Castanho, Rafael Resende, Glaucia Bordignon et Hélio Cezar Gomes dos Reis. « Pre-operative tomographic evaluation of calcaneum fractures in surgical planning ». Scientific Journal of the Foot & ; Ankle 12, no 4 (30 décembre 2018) : 332–37. http://dx.doi.org/10.30795/scijfootankle.2018.v12.859.

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Objective: To perform the correlation between the preoperative tomographic evaluation of patients with calcaneal fracture diagnosis and the access routes of choice, as well as the synthesis materials used.Methods: We reviewed 19 medical records of patients between 23 and 56 years old who underwent calcaneal fracture surgery from 01/01/2014 to 12/31/2015. We evaluated the mechanism of trauma, side, Essex-Lopresti classification, Böhler and Gissane angle in the pre- and postoperative period, Sanders tomographic classification and type of osteosynthesis performed. Angular measurements served as a reference for radiological analysis of the quality of the reduction. Results: 90% of the cases were of joint depression, the other 10% considered extra-articular. The preoperative Böhler angle varied between 5 and 40°, and between 10 and 38° in the postoperative period, and 55% of the fractures had an angular reconstruction considered good (between 20° and 40°). Gissane’s angle, on the other hand, varied between 110 and 170° in the preoperative period, and 102 and 132° in the postoperative period. In the tomographic analysis, Sanders IV classification was predominant (65%), followed by type IIIBC fractures (20%), and fractures type I, IIA and IIIAB (5% each). Osteosynthesis with plate and screw was the most used method (89.47%). Conclusion: Correct use of existing diagnostic imaging resources through radiographic and tomographic results provides the possibility of better preoperative planning in the intra-articular fractures of the calcaneus. However, in this study, there was no difference in the access route and synthesis according to the tomographic classification. Level of Evidence III; Diagnostic Studies; Study of Non-Consecutive Patients.
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Spottiswoode, Bruce S., S. Du Plessis, Armin Gretschel et Jan W. Lotz. « Functional MRI in pre-surgical planning : Case study and cautionary notes ». South African Journal of Radiology 16, no 3 (10 septembre 2012) : 107–10. http://dx.doi.org/10.4102/sajr.v16i3.293.

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Background. Since its inception almost 20 years ago, functional magnetic resonance imaging (fMRI) has greatly advanced our knowledge of human brain function. Although the clinical applications of fMRI are still limited, there have recently been encouraging advances for its use in pre-operative functional cortical mapping to identify potentially eloquent areas prior to neurosurgery. Objectives. We explore the potential use of this emerging technique by presenting a neurosurgical case study, as performed at the Cape Universities Brain Imaging Centre (CUBIC), Tygerberg, Cape Town. We conclude with a brief summary of the potential pitfalls of this technique, as well as cautionary guidelines based on our experience. Methods and results. A 22-year-old male patient from Tygerberg Hospital underwent the successful resection of an anaplastic astrocytoma after fMRI presurgical planning at our facility. The subject was able to leave the ward unassisted. Conclusion. If consideration is given to the many limitations of this emerging technique, fMRI can be useful in aiding the neurosurgeon in pre-operative planning of his surgical approach.
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Diniz, Ana Flávia N., Elismauro F. Mendonça, Claudio R. Leles, Adérico S. Guilherme, Marcelo P. Cavalcante et Maria Alves G. S. Silva. « Changes in the pre-surgical treatment planning using conventional spiral tomography ». Clinical Oral Implants Research 19, no 3 (mars 2008) : 249–53. http://dx.doi.org/10.1111/j.1600-0501.2007.01475.x.

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Romano, A., G. D’Andrea, G. Minniti, L. Mastronardi, L. Ferrante, L. M. Fantozzi et A. Bozzao. « Pre-surgical planning and MR-tractography utility in brain tumour resection ». European Radiology 19, no 12 (16 juin 2009) : 2798–808. http://dx.doi.org/10.1007/s00330-009-1483-6.

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McCracken, J. L., et E. E. Weber LeBrun. « Pre-operative surgical planning for minimally-invasive sacral colpopexy : integrating patient choice into surgical approach ». American Journal of Obstetrics and Gynecology 226, no 3 (mars 2022) : S1316. http://dx.doi.org/10.1016/j.ajog.2021.12.079.

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Smirnov, A. S., M. G. Sharaev, T. V. Melnikova-Pitskhelauri, V. Yu Zhukov, A. E. Bikanov, E. V. Sharova, E. L. Pogosbekyan et al. « Resting state fMRI in pre-surgical brain mapping. Literature review ». Medical Visualization, no 5 (28 octobre 2018) : 6–13. http://dx.doi.org/10.24835/1607-0763-2018-5-6-13.

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Today, functional magnetic resonance imaging (fMRI) allows to plan surgery based on the topography of functionally important areas of the human brain cortex and tumor. This method can complement the surgical strategy with significant clinical information. The stimulus-dependent fMRI with motor and language paradigms is generally used for preoperative planning. The study outcome depends on the patient's ability to perform tasks paradigm, which is broken in brain tumors. In an attempt to overcome this problem, resting-state fMRI (rs-fMRI) is used for brain mapping. Rs-fMRI is based on the measurement of spontaneous fluctuations of the BOLD signal (blood oxygen level-dependent), representing the functional structure of the brain. In contrast to stimulus-dependent fMRI, rs-fMRI provides more complete information about functional architecture of the brain. rs-fMRI is used in conditions where the results of stimulusdependent fMRI may be falsely positive or in the absence of the possibility of its implementation. In aggregate, both methods significantly expand the efficiency and specificity of preoperative planning.
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Piombino, Pasquale, Vincenzo Abbate, Lorenzo Sani, Stefania Troise, Umberto Committeri, Emanuele Carraturo, Fabio Maglitto, Giacomo De Riu, Luigi Angelo Vaira et Luigi Califano. « Virtual Surgical Planning in Orthognathic Surgery : Two Software Platforms Compared ». Applied Sciences 12, no 18 (19 septembre 2022) : 9364. http://dx.doi.org/10.3390/app12189364.

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Over 70% of patients suffering from dentofacial deformities mention esthetics as the biggest issue pushing them to look for orthodontic and orthognathic treatment. At present, several pieces of software for computer-aided surgery have been released on the market. This surgical planning software allows surgeons to manipulate digital representations of hard and soft tissue profile tracings and subsequently morph the pretreatment image to produce a treatment simulation. The aims of this study were to investigate and find the difference between two of the most used pieces of digital software in pre-surgical planning for patients affected by dentofacial deformities by using the following parameters: usability, validity, timing, accessibility, efficacy, and predictability of the pre-surgical planning. Analyzing the results obtained from our study, it is correct to define both software tools useful and valid in digital surgical planning for the treatment of patients with dentofacial deformities. Each software has negligible differences in performance that do not in any way affect the success of surgical planning. The IPS software represents a valid alternative to the most popular and tested Dolphin Imaging software, and we are even inclined to evaluate it as better in terms of accuracy, effectiveness, and reliability.
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Nazzal, Hani, Sophy Barber, Zynab Jawad, Nadine Houghton et Monty Duggal. « Tooth autotransplantation part 3 : surgical planning and technique ». Orthodontic Update 12, no 4 (2 octobre 2019) : 126–33. http://dx.doi.org/10.12968/ortu.2019.12.4.126.

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The practical aspects of pre-operative assessment and surgical procedure for autotransplantation are discussed in this part of the series. The success of tooth transplantation is dependent on case selection, careful planning and a surgical procedure that maintains viable periodontal ligament cells and intact cementum of the transplanted teeth. A thorough assessment of the donor tooth and recipient site is vital for successful planning and execution of tooth autotransplantation. The surgical procedure involves atraumatic extraction of the donor tooth, socket preparation and splinting of the transplanted tooth. Post-surgical procedures include monitoring of pulp and periodontal healing and restorative camouflage of the donor tooth. CPD/Clinical Relevance: Surgical planning and procedures are vital to the success of autotransplantation. Orthodontists should be aware of these factors and bear them in mind when preparing patients for autotransplantation to optimize surgical success.
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Pyda, Jordan, Rolvix H. Patterson, Luke Caddell, Taylor Wurdeman, Rachel Koch, David Polatty, Brittany Card, John G. Meara et Daniel Scott Corlew. « Towards resilient health systems : opportunities to align surgical and disaster planning ». BMJ Global Health 4, no 3 (juin 2019) : e001493. http://dx.doi.org/10.1136/bmjgh-2019-001493.

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Natural disasters significantly contribute to human death and suffering. Moreover, they exacerbate pre-existing health inequalities by imposing an additional burden on the most vulnerable populations. Robust local health systems can greatly mitigate this burden by absorbing the extraordinary patient volume and case complexity immediately after a disaster. This resilience is largely determined by the predisaster local surgical capacity, with trauma, neurosurgical, obstetrical and anaesthesia care of particular importance. Nevertheless, the disaster management and global surgery communities have not coordinated the development of surgical systems in low/middle-income countries (LMIC) with disaster resilience in mind. Herein, we argue that an appropriate peridisaster response requires coordinated surgical and disaster policy, as only local surgical systems can provide adequate disaster care in LMICs.We highlight three opportunities to help guide this policy collaboration. First, the Lancet Commission on Global Surgery and the Sendai Framework for Disaster Risk Reduction set forth independent roadmaps for global surgical care and disaster risk reduction; however, ultimately both advocate for health system strengthening in LMICs. Second, the integration of surgical and disaster planning is necessary. Disaster risk reduction plans could recognise the role of surgical systems in disaster preparedness more explicitly and pre-emptively identify deficiencies in surgical systems. Based on these insights, National Surgical, Obstetric, and Anesthesia Plans, in turn, can better address deficiencies in systems and ensure increased disaster resilience. Lastly, the recent momentum for national surgical planning in LMICs represents a political window for the integration of surgical policy and disaster risk reduction strategies.
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Rumpel, Helmut, Ling Ling Chan, Judy SP Tan, Ivan HB Ng et Winston EH Lim. « Clinical Functional Magnetic Resonance Imaging for Pre-surgical Planning – the Singapore General Hospital Experience with the First 30 Patients ». Annals of the Academy of Medicine, Singapore 38, no 9 (15 septembre 2009) : 782–87. http://dx.doi.org/10.47102/annals-acadmedsg.v38n9p782.

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Introduction: Functional magnetic resonance imaging (fMRI) is a neuroradiological technique for the localisation of cortical function. FMRI made its debut in cognitive neuroscience and then eventually to other clinical applications. We report our experience with pre-surgical fMRI on a high field scanner, based purely on a clinical platform. Materials and Methods: The protocols included motor, auditory, visual and language fMRI. The choice of protocols was dependant on clinical request and lesion locale. Results: Retrospective analysis and audit of the first 30 consecutive patients over a 12-month period revealed that about 85% of patients had a successful examination. In a pictorial essay, we demonstrate that patients with weakness in performing a motor task showed abnormal activations of the pre-motor and supplementary motor areas. Conclusion: FMRI data greatly enhances the pre-surgical planning process and the conduct of surgery when it is incorporated into the surgical navigation system in the operating theatre. Key words: fMRI, Pre-surgical planning, Task activation
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Seaward, JR, PA Wilson et CA Stone. « Computer-aided surgical planning in the treatment of soft-tissue sarcoma ». Annals of The Royal College of Surgeons of England 92, no 8 (novembre 2010) : 639–42. http://dx.doi.org/10.1308/003588410x12699663904556.

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INTRODUCTION Soft-tissue sarcoma resections are often highly complex procedures that demand meticulous pre-operative planning in order to maximise the potential for complete excision with clear margins, while preserving vital neurovascular structures and muscle groups. SUBJECTS AND METHODS We present a computer-aided model for surgical planning using Microsoft Powerpoint as a tool for cross referencing magnetic resonance images and normal anatomical diagrams. RESULTS Using this system the operator follows a sequence of pre-planned steps, minimising intra-operative decision making and unexpected adverse events. Four case studies are discussed. CONCLUSIONS The visual plan optimises the potential to meet surgical and oncological goals, and serves as an excellent nct to the operation note for documentation of the procedure.
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EL Sahili, Nabil, Ibrahim Nasseh, Antoine Berberi, Sandra David-Tchouda, Sophie Thoret et Thomas Fortin. « Impact of Cone Beam Computed Tomography Dose in Pre-Surgical Implant Analysis ». Open Dentistry Journal 12, no 1 (31 janvier 2018) : 94–103. http://dx.doi.org/10.2174/1874210601812010094.

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Objectives: Cone-Beam Computed Tomography (CBCT) produces vital information required for the accurate and prudent placement of dental implants. Lack of standardization between CBCT machines may result in unsafe patient exposure to harmful radiation; higher doses are not necessarily associated with improved image quality. Aim: The study aimed to assess the influence of low- and high-dose milliamperage settings on CBCT images for objective and subjective implant planning. Methods: Two dry skulls (4 hemi-maxillary segments of the maxilla and 4 hemi-maxillary segments of the mandible) were scanned under low (2 mA) and high (6.3 mA) dosage settings using a CBCT (Carestream CS 9300). Cross-sectional slices of both image qualities were evaluated by five expert clinicians, for image quality for implant planning and objective bone measurements. Results: There were no significant differences in bone measurements taken on high or low dose images (p > 0.05). In qualitative image assessments, assessment and image quality for almost all observers were independent of each other. For planning posterior mandibular implant placement, increased dosage improved concordance and kappa values between low and high dose images. Conclusion: Reduction in milliamperage did not affect diagnostic image quality for objective bone measurements and produced sufficient intra-rater reliability for qualitative assessment; therefore dose reduction can be achieved without compromising diagnostic decision- making.
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Perica, Elizabeth, et Zhonghua Sun. « Patient-specific three-dimensional printing for pre-surgical planning in hepatocellular carcinoma treatment ». Quantitative Imaging in Medicine and Surgery 7, no 6 (décembre 2017) : 668–77. http://dx.doi.org/10.21037/qims.2017.11.02.

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Alqerban, A., M. Hedesiu, M. Baciut, O. Nackaerts, R. Jacobs, S. Fieuws et G. Willems. « Pre-surgical treatment planning of maxillary canine impactions using panoramicvscone beam CT imaging ». Dentomaxillofacial Radiology 42, no 9 (octobre 2013) : 20130157. http://dx.doi.org/10.1259/dmfr.20130157.

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Cuenca‐Barrales, C., L. Salvador‐Rodríguez, S. Arias‐Santiago et A. Molina‐Leyva. « Pre‐operative ultrasound planning in the surgical management of patients with hidradenitis suppurativa ». Journal of the European Academy of Dermatology and Venereology 34, no 10 (13 juillet 2020) : 2362–67. http://dx.doi.org/10.1111/jdv.16435.

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Doron, Omer, Zeev Feldman et Jacob Zauberman. « MRI features have a role in pre-surgical planning of colloid cyst removal ». Acta Neurochirurgica 158, no 4 (13 février 2016) : 671–76. http://dx.doi.org/10.1007/s00701-016-2739-y.

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Schorr, O., J. Münchenberg, J. Raczkowsky et H. Wörn. « KasOp—A generic system for pre- and intraoperative surgical assistance and operation planning ». International Congress Series 1230 (juin 2001) : 1257–58. http://dx.doi.org/10.1016/s0531-5131(01)00264-3.

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Preda, Silviu Daniel, Cătălin Ciobîrcă, Gabriel Gruionu, Andreea Șoimu Iacob, Konstantinos Sapalidis, Lucian Gheorghe Gruionu, Ștefan Castravete, Ștefan Pătrașcu et Valeriu Șurlin. « Preoperative Computer-Assisted Laparoscopy Planning for the Minimally Invasive Surgical Repair of Hiatal Hernia ». Diagnostics 10, no 9 (21 août 2020) : 621. http://dx.doi.org/10.3390/diagnostics10090621.

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Minimal invasive surgical procedures such as laparoscopy are preferred over open surgery due to faster postoperative recovery, less trauma and inflammatory response, and less scarring. Laparoscopic repairs of hiatal hernias require pre-procedure planning to ensure appropriate exposure and positioning of the surgical ports for triangulation, ergonomics, instrument length and operational angles to avoid the fulcrum effect of the long and rigid instruments. We developed a novel surgical planning and navigation software, iMTECH to determine the optimal location of the skin incision and surgical instrument placement depth and angles during laparoscopic surgery. We tested the software on five cases of human hiatal hernia to assess the feasibility of the stereotactic reconstruction of anatomy and surgical planning. A whole-body CT investigation was performed for each patient, and abdominal 3D virtual models were reconstructed from the CT scans. The optical trocar access point was placed on the xipho-umbilical line. The distance on the skin between the insertion point of the optical trocar and the xiphoid process was 159.6, 155.7, 143.1, 158.3, and 149.1 mm, respectively, at a 40° elevation angle. Following the pre-procedure planning, all patients underwent successful surgical laparoscopic procedures. The user feedback was that planning software significantly improved the ergonomics, was easy to use, and particularly useful in obese patients with large hiatal defects where the insertion points could not be placed in the traditional positions. Future studies will assess the benefits of the planning system over the conventional, empirical trocar positioning method in more patients with other surgical challenges.
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Baan, F., O. de Waard, R. Bruggink, T. Xi, E. M. Ongkosuwito et T. J. J. Maal. « Virtual setup in orthodontics : planning and evaluation ». Clinical Oral Investigations 24, no 7 (12 novembre 2019) : 2385–93. http://dx.doi.org/10.1007/s00784-019-03097-3.

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Abstract Objectives The purpose of this study was to evaluate the clinical accuracy of virtual orthodontic setups by using a new CBCT-based approach. Materials and methods Ten patients who underwent pre-surgical orthodontics were included in this study. Pre-treatment and pre-surgical cone-beam CT (CBCT) scans and digital dental models were available. The pre-treatment digital dental model was used to create an orthodontic virtual setup. The digital dental models were fused with the corresponding CBCT scans, and the two CBCT scans were aligned using voxel-based matching. Moving each individual tooth from the virtual setup to the final outcome allows the calculation of the accuracy of the virtual setup by using an iterative closest point algorithm. Differences between virtual setup and final outcome were recorded as well as the ICC between two observers. Results The inter-observer variability showed a high level of agreement between the observers. The largest mean difference between observers was found in the cranial/caudal direction (0.36 ± 0.30 mm) and the roll rotation (1.54 ± 0.98°). Differences between the virtual setup and final outcome were small in the translational direction (0.45 ± 0.48 mm). Rotational mean differences were larger with the pitch of the incisors (0.00 ± 7.97°) and molars (0.01 ± 10.26°) as largest difference. Excessive extrusion of all upper teeth and more anterior movement than planned were seen for both upper and lower arch. Lower molars showed less extrusion. Clinical relevance The data of this study can be used to obtain more insight in the accuracy and achievability of orthodontic virtual setup. Tooth movement can now be studied in more details which can lead to new insights.
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Juhnke, Bethany, Alex R. Mattson, Daniel Saltzman, Anthony Azakie, Eric Hoggard, Matthew Ambrose, Paul A. Iaizzo, Arthur Erdman et Gwenyth Fischer. « Use of virtual reality for pre-surgical planning in separation of conjoined twins : A case report ». Proceedings of the Institution of Mechanical Engineers, Part H : Journal of Engineering in Medicine 233, no 12 (26 septembre 2019) : 1327–32. http://dx.doi.org/10.1177/0954411919878067.

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We describe the use of virtual reality technology for surgical planning in the successful separation of thoracopagus conjoined twins. Three-dimensional models were created from computed tomography angiograms to simulate the patient’s anatomy on a virtual stereoscopic display. Members of the surgical teams reviewed the anatomical models to localize an interatrial communication that allowed blood to flow between the two hearts. The surgical plan to close the 1-mm interatrial communication was significantly modified based on the pre-procedural spatial awareness of the anatomy presented in the virtual visualization. The virtual stereoscopic display was critical for the surgical team to successfully separate the twins and provides a useful case study for the use of virtual reality technology in surgical planning. Both twins survived the operation and were subsequently discharged from the hospital.
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Hogan, Niamh M., et Myles R. Joyce. « Surgical Management of Locally Recurrent Rectal Cancer ». International Journal of Surgical Oncology 2012 (2012) : 1–6. http://dx.doi.org/10.1155/2012/464380.

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Developments in chemotherapeutic strategies and surgical technique have led to improved loco regional control of rectal cancer and a decrease in recurrence rates over time. However, locally recurrent rectal cancer continues to present considerable technical challenges and results in significant morbidity and mortality. Surgery remains the only therapy with curative potential. Despite a hostile intra-operative environment, with meticulous pre-operative planning and judicious patient selection, safe surgery is feasible. The potential benefit of new techniques such as intra-operative radiotherapy and high intensity focussed ultrasonography has yet to be thoroughly investigated. The future lies in identification of predictors of recurrence, development of schematic clinical algorithms to allow standardised surgical technique and further research into genotyping platforms to allow individualisation of therapy. This review highlights important aspects of pre-operative planning, intra-operative tips and future strategies, focussing on a multimodal multidisciplinary approach.
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Rodríguez, José A., Vahid Entezari, Joseph P. Iannotti et Eric T. Ricchetti. « Pre-operative planning for reverse shoulder replacement : the surgical benefits and their clinical translation ». Annals of Joint 4 (avril 2019) : 4. http://dx.doi.org/10.21037/aoj.2018.12.09.

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Ives-Deliperi, Victoria Lyn, et James Thomas Butler. « Localizing the Language Network with fMRI and Functional Connectivity : Implications for Pre-Surgical Planning ». Open Journal of Modern Neurosurgery 08, no 02 (2018) : 174–86. http://dx.doi.org/10.4236/ojmn.2018.82015.

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Menakaya, Uche A., Luk Rombauts et Neil P. Johnson. « Diagnostic laparoscopy in pre-surgical planning for higher stage endometriosis : Is it still relevant ? » Australian and New Zealand Journal of Obstetrics and Gynaecology 56, no 5 (28 juillet 2016) : 518–22. http://dx.doi.org/10.1111/ajo.12505.

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Sie, F., G. J. Bootsma, A. L. Parent, C. I. Euler, C. N. Catton, J. S. Wunder, P. C. Ferguson, B. O'Sullivan, R. S. Bell et D. A. Jaffray. « 7507 ORAL Optical navigation-assisted surgical planning for sarcoma patients receiving pre-operative radiotherapy ». European Journal of Cancer Supplements 5, no 4 (septembre 2007) : 404. http://dx.doi.org/10.1016/s1359-6349(07)71484-2.

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Wake, Nicole, Temitope Rude, Stella K. Kang, Michael D. Stifelman, James F. Borin, Daniel K. Sodickson, William C. Huang et Hersh Chandarana. « 3D printed renal cancer models derived from MRI data : application in pre-surgical planning ». Abdominal Radiology 42, no 5 (7 janvier 2017) : 1501–9. http://dx.doi.org/10.1007/s00261-016-1022-2.

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Lashkarinia, S. Samaneh, Senol Piskin, Tijen A. Bozkaya, Ece Salihoglu, Can Yerebakan et Kerem Pekkan. « Computational Pre-surgical Planning of Arterial Patch Reconstruction : Parametric Limits and In Vitro Validation ». Annals of Biomedical Engineering 46, no 9 (14 mai 2018) : 1292–308. http://dx.doi.org/10.1007/s10439-018-2043-5.

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Mahdavi, Ali, Ramyar Azar, Majid Haghighat Shoar, Sina Hooshmand, Arash Mahdavi et Homayoon Hadizadeh Kharrazi. « Functional MRI in clinical practice : Assessment of language and motor for pre-surgical planning ». Neuroradiology Journal 28, no 5 (octobre 2015) : 468–73. http://dx.doi.org/10.1177/1971400915609343.

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Mukherjee, Payal, Kai Cheng, Sean Flanagan et Simon Greenberg. « Utility of 3D printed temporal bones in pre-surgical planning for complex BoneBridge cases ». European Archives of Oto-Rhino-Laryngology 274, no 8 (24 mai 2017) : 3021–28. http://dx.doi.org/10.1007/s00405-017-4618-4.

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Tolerton, Sarah, et Mark Nabarro. « Flexor Tendon Lacerations Secondary to Closed Proximal Phalangeal Fracture ». Journal of Hand Surgery (Asian-Pacific Volume) 24, no 01 (13 février 2019) : 123–26. http://dx.doi.org/10.1142/s2424835519720093.

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We report a case of complete laceration of both flexor tendons in the dominant ring finger of a young male caused by a closed volar fracture fragment of the proximal phalanx. Careful clinical examination, reasonable index of suspicion and ultrasound confirmation play a pivotal role in the diagnosis and surgical planning of this rare yet consequential injury. Good outcomes can be achieved from the surgical management and rehabilitation of both soft tissue and bony injuries when planning of surgical approaches and fixation techniques are facilitated by an accurate pre-operative diagnosis.
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Andrzejewski, Krzysztof, Marcin Elgalal, Piotr Komorowski, Jan Poszepczyński, Bożena Rokita et Marcin Domżalski. « Fast-Track-Protocol for Optimization of Presurgical Planning in Acute Surgical Treatment of Acetabular Quadrilateral Plate Fractures Using 3D Printing Technology and Pre-Contoured Reconstruction Plates ». Applied Sciences 12, no 7 (30 mars 2022) : 3492. http://dx.doi.org/10.3390/app12073492.

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Background. Preoperative planning and 3D printing can be used to treat pelvic bone fractures using pre-contoured surgical plates, in particular complex, comminuted fractures involving the acetabulum and quadrilateral plate. The aim of the study was to develop a Fast-Track-Protocol (fast track methodology) for creating 3D anatomical models, that could be used to shape surgical plates, using open-source software and budget 3D printers. Such a ‘low-budget’ approach would allow a hospital-based multidisciplinary team to carry out pre-surgical planning and treat complex pelvic fractures using 3D technology. Methods. The study included 5 patients with comminuted pelvic fractures. For each patient, CT (computed tomography) data were converted into two 3D models of the pelvis-injured side and mirrored model of the contralateral, uninjured hemipelvis. These models were 3D printed and used as templates to shape surgical plates. Results. A Fast-Track-Protocol was established and used to successfully treat 5 patients with complex, comminuted fractures of the pelvis. Conclusion. Using the Fast-Track-Protocol it was possible to prepare 3D printed models and patient-specific pre-contoured plates within 2 days of hospital admittance. Such an approach resulted in better surgical technique and shorter operative times, while incurring relatively low costs.
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Indhumathi, C., Wenyu Chen et Yiyu Cai. « Multi-Modal VR for Medical Simulation ». International Journal of Virtual Reality 8, no 1 (1 janvier 2009) : 1–7. http://dx.doi.org/10.20870/ijvr.2009.8.1.2707.

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Over the past three decades computer graphics and virtual reality (VR) have played a significant role in adding value to medicine for diagnosis and treatment applications. Medical simulation is increasingly used in medical training and surgical planning. This paper investigates the multi-modal VR interface for medical simulation focusing on motion tracking, stereographic visualization, voice navigation, and interactions. Applications in virtual anatomy learning, surgical training and pre-treatment planning will also be discussed.
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Van Hoe, Stefaan, Eman Shaheen, Karla de Faria Vasconcelos, Joseph Schoenaers, Constantinus Politis et Reinhilde Jacobs. « Contribution of three-dimensional images in the planning of cementoblastoma resection ». BJR|case reports 7, no 3 (mai 2021) : 20200156. http://dx.doi.org/10.1259/bjrcr.20200156.

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Cementoblastomas are rare benign tumours that represent less than 1% of all odontogenic tumours. Complete resection is mandatory to avoid recurrence. This case report describes the contribution of three-dimensional imaging and three-dimensional printing in the pre-operative surgical planning of a large cementoblastoma that not only caused substantial compression on the inferior alveolar and mental nerves, but also caused thinning and partial erosion of the lingual and vestibular cortical bone, thus increasing the risk of pre-operative mandibular fracture.
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Lin, Yu Cheng, et Jing Jing Fang. « Voxel-Based, Image Source-Independent 3D Asymmetry Quantification in the Maxillofacial Region ». Advanced Materials Research 452-453 (janvier 2012) : 165–69. http://dx.doi.org/10.4028/www.scientific.net/amr.452-453.165.

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This study proposes a voxel-based method, independent of image sources, for the evaluation, quantification, symmetry ratio definitions, and assessment of the optimal symmetry plane. Craniomaxillofacial bones can be evaluated through their symmetry ratio and the optimal symmetry plane can be used as a guide for oral and maxillofacial surgical planning and reconstruction after the removal of facial tumors, or as a guide for orthognathic surgery in jaw correction. This quantification analysis technique can be used in growth tracing planning, pre- and post-surgical comparisons, and the planning of follow-up therapy.
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Chatzistavrianou, Despoina, Paul HR Wilson et Philip Taylor. « A guide to implant dentistry part 2 : surgical and prosthodontic considerations ». Dental Update 46, no 6 (2 juin 2019) : 514–23. http://dx.doi.org/10.12968/denu.2019.46.6.514.

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Implant rehabilitation is a successful treatment modality for the replacement of missing teeth, but careful treatment planning, restoratively-driven implant placement and individualized maintenance are prerequisites for success in order to control and minimize technical and biologic complications. The first part of the series focused on new patient assessment and pre-operative planning. The second part of the series will discuss the surgical and prosthodontic considerations and maintenance of implant-supported restorations. CPD/Clinical Relevance: To provide the dental practitioner with an evidence-based overview regarding treatment planning, surgical and prosthodontic considerations and maintenance of implant-supported restorations.
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Meesters, Anne M. L., Nick Assink, Kaj ten Duis, Eelco M. Fennema, Joep Kraeima, Max J. H. Witjes, Jean-Paul P. M. de Vries, Vincent M. A. Stirler et Frank F. A. IJpma. « Accuracy of Patient-Specific Drilling Guides in Acetabular Fracture Surgery : A Human Cadaver Study ». Journal of Personalized Medicine 11, no 8 (3 août 2021) : 763. http://dx.doi.org/10.3390/jpm11080763.

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Due to the complex anatomical shape of the pelvis, screw placement can be challenging in acetabular fracture surgery. This study aims to assess the accuracy of screw placement using patient-specific surgical drilling guides applied to pre-contoured conventional implants in acetabular fracture surgery. CT scans were made of four human cadavers to create 3D models of each (unfractured) pelvis. Implants were pre-contoured on 3D printed pelvic models and optically scanned. Following virtual preoperative planning, surgical drilling guides were designed to fit on top of the implant and were 3D printed. The differences between the pre-planned and actual screw directions (degrees) and screw entry points (mm) were assessed from the pre- and postoperative CT-scans. The median difference between the planned and actual screw direction was 5.9° (IQR: 4–8°) for the in-plate screws and 7.6° (IQR: 6–10°) for the infra-acetabular and column screws. The median entry point differences were 3.6 (IQR: 2–5) mm for the in-plate screws and 2.6 (IQR: 2–3) mm for the infra-acetabular and column screws. No screws penetrated into the hip joint or caused soft tissue injuries. Three-dimensional preoperative planning in combination with surgical guides that envelope pre-contoured conventional implants result in accurate screw placement during acetabular fracture surgery.
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Zhang, Rong Feng, Peng Yun Wang, Ming Yang, Xuebo Dong, Xue Liu, Yiguang Sang et An Tong. « Application of 3D Printing Technology in Orthopedic Medical Implant -Spinal surgery as an example ». International Journal of Bioprinting 5, no 2 (4 juin 2019) : 3. http://dx.doi.org/10.18063/ijb.v5i2.168.

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Additive manufacturing has been used in complex spinal surgical planning since the 1990s and is now increasingly utilized to produce surgical guides, templates, and more recently customized implants. Surgeons report beneficial impacts using additively manufactured biomodels as pre-operative planning aids as it generally provides a better representation of the patient’s anatomy than on-screen viewing of computed tomography (CT) or magnetic resonance imaging (MRI). Furthermore, it has proven to be very beneficial in surgical training and in explaining complex deformity and surgical plans to patients/ parents. This paper reviews the historical perspective, current use, and future directions in using additive manufacturing in complex spinal surgery cases. This review reflects the authors’ opinion of where the field is moving in light of the current literature. Despite the reported benefits of additive manufacturing for surgical planning in recent years, it remains a high niche market. This review raises the question as to why the use of this technology has not progressed more rapidly despite the reported advantages – decreased operating time, decreased radiation exposure to patients intraoperatively, improved overall surgical outcomes, pre-operative implant selection, as well as being an excellent communication aid for all medical and surgical team members. Increasingly, the greatest benefits of additive manufacturing technology in spinal surgery are customdesigned drill guides, templates for pedicle screw placement, and customized patient-specific implants. In view of these applications, additive manufacturing technology could potentially revolutionize health care in the near future.
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Awobem, A. A., et R. J. A. England. « Pre-operative parathyroid localisation : surgical review of sesta-methoxyisobutylisonitrile images is important ». Journal of Laryngology & ; Otology 124, no 6 (4 décembre 2009) : 674–76. http://dx.doi.org/10.1017/s0022215109992234.

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AbstractObjective:To highlight the importance of pre-operative review of sesta-methoxyisobutylisonitrile imaging before parathyroid surgery.Case report:Technetium-99 m sesta-methoxyisobutylisonitrile scanning is a well established imaging modality undertaken to locate the parathyroid glands prior to parathyroidectomy. Because of the relative lack of detail in the images obtained, the radiological report is normally the most important piece of information used by the surgeon for surgical planning. We report a case that illustrates the importance of surgical image review prior to revision parathyroid surgery. We also present a review of literature highlighting the need for surgical review of such imaging.Conclusion:We propose that surgeons routinely review sesta-methoxyisobutylisonitrile images pre-operatively.
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Belvedere, Claudio, Maurizio Ortolani, Alberto Leardini, Michele Cappuccio, Luca Amendola et Federico De Iure. « 3D Printing in Surgical Planning and Intra-Operative Assistance : A Case Report on Cervical Deformity Correction Surgery ». Applied Sciences 12, no 22 (14 novembre 2022) : 11564. http://dx.doi.org/10.3390/app122211564.

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Three-dimensional (3D)-printed anatomical models of the bones play a key role in complex surgical procedures. These subject-specific physical models are valuable in pre-operative planning and may also offer assistance during surgery by improving the visibility of inaccessible anatomical structures, particularly in spine surgery. Starting from medical imaging, virtual 3D bone models are reconstructed, and these can also be used for quantifying original, planned, and achieved bone-to-bone alignments. The purpose of this study is to report on an original exploitation of these techniques on a patient with a severe cervical deformity to undergo corrective and stabilizing surgery. A virtual anatomical model of the cervical spine before surgery was obtained from computer tomography to assess the original deformity and for surgical planning. The corresponding 3D model was printed in acrylonitrile-butadiene-styrene and used to simulate the surgery by performing bone cuts, implanting the screws, and placing and shaping the fixation elements. During surgery, this physical 3D-printed model was used as a reference for each surgical action. The comparisons between pre- and post-operative virtual models confirmed that the planned correction was achieved. Virtual and 3D-printed anatomical models of the cervical spine offer advantages in the planning and execution of personalized complex surgeries, in addition to improving surgical safety.
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Pugalendhi, Arivazhagan, et Rajesh Ranganathan. « A review of additive manufacturing applications in ophthalmology ». Proceedings of the Institution of Mechanical Engineers, Part H : Journal of Engineering in Medicine 235, no 10 (28 juin 2021) : 1146–62. http://dx.doi.org/10.1177/09544119211028069.

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Additive Manufacturing (AM) capabilities in terms of product customization, manufacture of complex shape, minimal time, and low volume production those are very well suited for medical implants and biological models. AM technology permits the fabrication of physical object based on the 3D CAD model through layer by layer manufacturing method. AM use Magnetic Resonance Image (MRI), Computed Tomography (CT), and 3D scanning images and these data are converted into surface tessellation language (STL) file for fabrication. The applications of AM in ophthalmology includes diagnosis and treatment planning, customized prosthesis, implants, surgical practice/simulation, pre-operative surgical planning, fabrication of assistive tools, surgical tools, and instruments. In this article, development of AM technology in ophthalmology and its potential applications is reviewed. The aim of this study is nurturing an awareness of the engineers and ophthalmologists to enhance the ophthalmic devices and instruments. Here some of the 3D printed case examples of functional prototype and concept prototypes are carried out to understand the capabilities of this technology. This research paper explores the possibility of AM technology that can be successfully executed in the ophthalmology field for developing innovative products. This novel technique is used toward improving the quality of treatment and surgical skills by customization and pre-operative treatment planning which are more promising factors.
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Condino, Sara, Fabrizio Cutolo, Nadia Cattari, Simone Colangeli, Paolo Domenico Parchi, Roberta Piazza, Alfio Damiano Ruinato, Rodolfo Capanna et Vincenzo Ferrari. « Hybrid Simulation and Planning Platform for Cryosurgery with Microsoft HoloLens ». Sensors 21, no 13 (29 juin 2021) : 4450. http://dx.doi.org/10.3390/s21134450.

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Cryosurgery is a technique of growing popularity involving tissue ablation under controlled freezing. Technological advancement of devices along with surgical technique improvements have turned cryosurgery from an experimental to an established option for treating several diseases. However, cryosurgery is still limited by inaccurate planning based primarily on 2D visualization of the patient’s preoperative images. Several works have been aimed at modelling cryoablation through heat transfer simulations; however, most software applications do not meet some key requirements for clinical routine use, such as high computational speed and user-friendliness. This work aims to develop an intuitive platform for anatomical understanding and pre-operative planning by integrating the information content of radiological images and cryoprobe specifications either in a 3D virtual environment (desktop application) or in a hybrid simulator, which exploits the potential of the 3D printing and augmented reality functionalities of Microsoft HoloLens. The proposed platform was preliminarily validated for the retrospective planning/simulation of two surgical cases. Results suggest that the platform is easy and quick to learn and could be used in clinical practice to improve anatomical understanding, to make surgical planning easier than the traditional method, and to strengthen the memorization of surgical planning.
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Taylor, Camilla J., Vanessa G. Peter, Matthew O. D. Coleridge et Andrew P. Bathe. « Immediate pre-operative computed tomography for surgical planning of equine fracture repair : A retrospective review of 55 cases ». PLOS ONE 17, no 12 (28 décembre 2022) : e0278748. http://dx.doi.org/10.1371/journal.pone.0278748.

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Introduction Fracture configuration is often more complex than is radiographically appreciable. The objective of this study is to describe the influence of pre-operative computed tomography (CT) for surgical planning in a variety of fracture types. This has not been described in previous studies. Materials and methods All cases with pre-operative radiographs, admitted for CT and surgical repair of a suspected limb fracture from January 2010-December 2020 were reviewed. CT was acquired under general anaesthesia in a multi-slice helical scanner; any surgery was then performed immediately. Three diplomates (two surgical; one diagnostic imaging) performed a blinded retrospective review of the radiographs and CT for each horse. A consensus decision was made on any change in surgical plan prior to and after CT review, and cases divided into three categories: CT of major, intermediate or minor relevance, as previously described by Genton et al, 2019. Results 55 cases were collated. Thoroughbred racehorses predominated. The median age was 3 years. A diverse range of fractures were presented: proximal phalanx (18/55), carpal (17/55), metacarpal/tarsal (11/55), sesamoid (5/55), tarsal (3/55), and middle phalanx (1/55). In 13 of 55 cases (23.6%, 95% CI[12%,35%]) CT was of major relevance. In 21 of 55 cases CT was of intermediate relevance (38.2%, 95% CI[25%,51%]). In 21 of 55 cases CT was of minor relevance (38.2%, 95% CI[25%,51%]). A Fisher’s exact test demonstrated no statistical difference in CT relevance between fracture types (p<0.05). Discussion/Conclusions This study demonstrates that CT has a significant role in surgical planning, and in the majority (61.8%) of cases added additional information or significantly changed the surgical plan. In all cases CT ensured confidence in surgical planning.
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Cooke, Carly, Teresa Flaxman, Adnan Sheikh, Olivier Miguel, Matthew McInnes et Sukhbir Singh. « Pre-surgical planning using patient-specific 3D printed anatomical models for women with uterine fibroids ». Journal of Obstetrics and Gynaecology Canada 43, no 5 (mai 2021) : 670. http://dx.doi.org/10.1016/j.jogc.2021.02.071.

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Sandeep Kumar, Y., Rajeswara Rao KVS, Sunil R. Yalamalle, SM Venugopal et Sandeep Krishna. « Applications of 3D printing in TKR Pre surgical planning for Design Optimization – A Case Study ». Materials Today : Proceedings 5, no 9 (2018) : 18833–38. http://dx.doi.org/10.1016/j.matpr.2018.06.230.

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