Relevant bibliographies by topics / Laparoscopia 3D

Academic literature on the topic 'Laparoscopia 3D'

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Published: 14 March 2023

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Journal articles on the topic "Laparoscopia 3D"

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Romero-Loera, Sujey, Luis Eduardo Cárdenas-Lailson, Florencio de la Concha-Bermejillo, Braulio Aaron Crisanto-Campos, Carlos Valenzuela-Salazar, and Mucio Moreno-Portillo. "Comparación de destrezas en simulador de laparoscopia: imagen en 2D vs. 3D." Cirugía y Cirujanos 84, no. 1 (January 2016): 37–44. http://dx.doi.org/10.1016/j.circir.2015.06.032.

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Loreto Brand, Mariana Elisa. "Cirugía Colo-rectal Laparoscópica en 3D. ¿Recomendamos su implantación?" Archivos de coloproctología 1, no. 2 (September 2, 2018): 14. http://dx.doi.org/10.26754/ojs_arcol/arch_colo.201823009.

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La cirugía laparoscópica en 3D se presenta como una alternativa a los inconvenientes de la laparoscopia convencional. A pesar de los resultados discordantes de los primeros estudios realizados en 1998, los avances tecnológicos, la cada vez más frecuente experiencia de los cirujanos con las intervenciones laparoscópicas y su indicación habitual, han permitido que nuevas investigaciones en dicho campo muestren unos resultados más alentadores. El uso de tecnología tridimensional en la cirugía laparoscópica ha evolucionado desde sus inicios, pudiendo identificar situaciones propias por su uso como el ghosting-crosstalk y conceptos nuevos para el equipo quirúrgico que no se habían presentado en la cirugía laparoscópica convencional, como el de estereoagudeza / estereoceguera. A pesar de los beneficios hipotéticos y comprobados de la cirugía laparoscópica tridimensional (mejor percepción de profundidad, seguridad al realizar movimientos complejos, mayor precisión quirúrgica y menor curva de aprendizaje), los puntos débiles a tener en cuenta son: necesidad de estereopsis normal (normalmente no estudiada en el equipo quirúrgico), beneficio en ciertos pasos de la cirugía (anastomosis y suturas) con menor grado de ventaja en las intervenciones con menos necesidad de estas acciones y pocos ensayos clínicos con un diseño adecuado y un número de casos que brinden suficiente validez estadística. Por todo esto, es imposible recomendar al 100% la cirugía colo-rectal laparoscópica sin mayores estudios a disposición; aunque si se puede hacer mención a la alta posibilidad de que la misma sea poco a poco aceptada, siendo coherente y esperable con los avances tecnológicos y el interés de los mismos cirujanos sobre esta técnica.
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Sagae, Univaldo Etsuo, Doryane Maria dos Reis Lima, Namir Cavalli, Lucia Matiko Takamatsu Sagae, Tomaz Massayuki Tanaka, Mauro Willemann Bonatto, Ricardo Shigeo Tsuchiya, Carlos Alberto de Carvalho, and Andrea Ishikawa Shiratori. "Importância da ultra-sonografia anorretal tridimensional na decisão terapêutica da endometriose profunda." Revista Brasileira de Coloproctologia 29, no. 4 (December 2009): 435–42. http://dx.doi.org/10.1590/s0101-98802009000400001.

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OBJETIVO: Este estudo visa demonstrar a importância da ultra-sonografia anorretal tridimensional (US 3D) no diagnóstico da endometriose profunda e o grau de acometimento do trato intestinal na decisão terapêutica da endometriose do septo retovaginal. MÉTODOS: Estudo prospectivo realizado entre março de 2007 e julho de 2009. Sessenta e cinco mulheres com endometriose pélvica e com queixas gastrointestinais foram avaliadas e submetidas a US 3D. Vinte pacientes, média de idade 33,7anos, com suspeita de foco endometriótico intestinal foram submetidas ao procedimento laparoscópico para a realização de inventário da cavidade abdominal e tratamento cirúrgico. RESULTADOS: Em dezenove mulheres (95%), os achados laparoscópicos confirmaram a presença do foco endometriótico retal. O procedimento realizado à laparoscopia foi: exérese de foco peritoneais (n= 1); ressecção parcial do retossigmóide (n= 9); exérese de nódulo de reto (n= 10). O tempo operatório médio por procedimento foi de 120 minutos. O tempo médio de alta foi 1,7 dias. Duas pacientes apresentaram como complicação o aparecimento de fistula retovaginal. CONCLUSÃO: Conclui-se que a ultra-sonografia anorretal tridimensional é exame específico na avaliação do segmento anorretal, decisivo na detecção de focos endometrióticos do septo retovaginal e avalia eventuais doenças associadas nesse segmento, determinando a estratégica terapêutico-cirúrgica adequada.
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Vivas Alban, Oscar Andres, and Diego Enrique Guzmán Villamarín. "Herramienta software para la práctica de la robótica quirúrgica." Ingenieria y Universidad 19, no. 1 (March 16, 2015): 7. http://dx.doi.org/10.11144/javeriana.iyu19-1.sprq.

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Este artículo presenta el desarrollo de una herramienta software para la práctica de la robótica quirúrgica que integra la utilización de robots quirúrgicos en un entorno virtual 3D y que lleva por nombre RoboSurgery. La herramienta ha sido diseñada para que los ingenieros puedan comprender el uso de los asistentes robóticos en operaciones de laparoscopia. Integra dos tipos de robots, un robot porta endoscopio (robot Hibou) y dos robots quirúrgicos (robots Lapbot), manipulados por joystick. El sistema permite observar en una ventana el interior del abdomen del paciente, imagen virtual que es generada por el endoscopio situado en el órgano terminal del robot Hibou, mientras que se manipulan los dos robots quirúrgicos con el fin de realizar una colecistectomía (extracción de la vesícula). Los resultados muestran un sistema virtual bastante útil para la comprensión del funcionamiento de los asistentes quirúrgicos, que permitirá en un futuro adicionar otros robots y otros procedimientos, además de mayor realismo al incluir algoritmos de deformación de órganos.
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Koppatz, Hanna E., Jukka I. Harju, Jukka E. Sirén, Panu J. Mentula, Tom M. Scheinin, and Ville J. Sallinen. "Three-dimensional versus two-dimensional high-definition laparoscopy in transabdominal preperitoneal inguinal hernia repair: a prospective randomized controlled study." Surgical Endoscopy 34, no. 11 (November 21, 2019): 4857–65. http://dx.doi.org/10.1007/s00464-019-07266-z.

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Abstract Background Three-dimensional (3D) laparoscopy improves technical efficacy in laboratory environment, but evidence for clinical benefit is lacking. The aim of this study was to determine whether the 3D laparoscopy is beneficial in transabdominal preperitoneal laparoscopic inguinal hernia repair (TAPP). Method In this prospective, single-blinded, single-center, superior randomized trial, patients scheduled for TAPP were randomly allocated to either 3D or two-dimensional (2D) TAPP laparoscopic approaches. Patients were excluded if secondary operation was planned, the risk of conversion was high, or the surgeon had less than five previous 3D laparoscopic procedures. Patients were operated on by 13 residents and 3 attendings. The primary endpoint was operation time. The study was registered in ClinicalTrials.gov (NCT02367573). Results Total 278 patients were randomized between 5th February 2015 and 23rd October 2017. Median operation time was shorter in the 3D group (56.0 min vs. 68.0 min, p < 0.001). 10 (8%) patients in 3D group and 6 (5%) patients in 2D group had clinically significant complications (Clavien–Dindo 2 or higher) (p = 0.440). Rate of hernia recurrence was similar between groups at 1-year follow-up. In the subgroup analyses, operation time was shorter in 3D laparoscopy among attendings, residents, female surgeons, surgeons with perfect stereovision, surgeons with > 50 3D laparoscopic procedures, surgeons with any experience in TAPP, patients with body mass indices < 30, and bilateral inguinal hernia repairs. Conclusion 3D laparoscopy is beneficial and shortens operation time but does not affect safety or long-term outcomes of TAPP.
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Raspagliesi, Francesco, Giorgio Bogani, Fabio Martinelli, Mauro Signorelli, Cono Scaffa, Ilaria Sabatucci, Domenica Lorusso, and Antonino Ditto. "3D Vision Improves Outcomes in Early Cervical Cancer Treated with Laparoscopic Type B Radical Hysterectomy and Pelvic Lymphadenectomy." Tumori Journal 103, no. 1 (March 10, 2016): 76–80. http://dx.doi.org/10.5301/tj.5000572.

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Purpose To evaluate the alterations on surgical outcomes after of the implementation of 3D laparoscopic technology for the surgical treatment of early-stage cervical carcinoma. Methods Data of patients undergoing type B radical hysterectomy (with or without bilateral salpingo-oophorectomy) and pelvic lymphadenectomy via 3D laparoscopy were compared with a historical cohort of patients undergoing type B radical hysterectomy via conventional laparoscopy. Complications (within 60 days) were graded per the Accordion severity system. Results Data of 75 patients were studied: 15 (20%) and 60 (80%) patients undergoing surgery via 3D laparoscopy and conventional laparoscopy, respectively. Baseline patient characteristics as well as pathologic findings were similar between groups (p>0.1). Patients undergoing 3D laparoscopy experienced a trend toward shorter operative time than patients undergoing conventional laparoscopy (176.7 ± 74.6 vs 215.9 ± 61.6 minutes; p = 0.09). Similarly, patients undergoing 3D laparoscopic radical hysterectomy experienced shorter length of hospital stay (2 days, range 2-6, vs 4 days, range 3-11; p<0.001) in comparison to patients in the control group, while no difference in estimated blood loss was observed (p = 0.88). No between-group difference in complication rate was observed. Conclusions 3D technology is a safe and effective way to perform type B radical hysterectomy and pelvic node dissection in early-stage cervical cancer. Further large prospective studies are warranted in order to assess the cost-effectiveness of the introduction of 3D technology in comparison to robotic assisted surgery.
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Benelli, Andrea, Virginia Varca, Marco Rosso, Francesca Peraldo, and Andrea Gregori. "3D versus 2D laparoscopic radical prostatectomy for organ confined prostate cancer: Our experience." Journal of Clinical Urology 12, no. 3 (October 8, 2018): 186–91. http://dx.doi.org/10.1177/2051415818800536.

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Objective: Three-dimensional (3D) laparoscopy was developed to overcome the main limitations of traditional laparoscopy. The aim of our study was to compare operative, functional and oncological results of 3D and two-dimensional (2D) laparoscopic radical prostatectomy. Materials and methods: A total of 102 consecutive patients with clinically localised prostate cancer underwent laparoscopic radical prostatectomy. Patients were randomly assigned into two groups, 2D high definition (HD) camera (50 patients) for the first and 3D HD camera (52 patients) for the second group. Total operative time, anastomosis time, blood loss, complications and pentafecta rates for both groups were compared. All patients had at least one year of follow-up. Results: Total operative time was, respectively, 143 ± 17 and 118 ± 15 minutes, with a mean anastomosis time of 31± 12 and 23 ± 12 minutes. Mean blood loss was 230 ± 30 ml with 2D vision and 175 ± 40 with 3D vision. Pentafecta was reached, respectively, by 46% and 50% of patients at 3 months and 60% and 67.3% at 12 months. 3D vision offers an increased speed if compared with traditional vision ( P=0.02). Pentafecta results were significantly better in the 3D group ( P=0.03). Conclusion: We believe that 3D laparoscopy offers important advantages for surgeons and patients; its use should be encouraged. Level of evidence: 1c
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Aguilar, Eliana, Pedro Luis Solarte Correa, Jesus Humberto Dorado, José María Sabater, and Oscar Andrés Vivas Albán. "Prototipo de exploración educativa basada en realidad mixta para cirugía con casco Meta 2." Ingeniería 28, no. 1 (November 20, 2022): e18543. http://dx.doi.org/10.14483/23448393.18543.

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Contexto: Los cirujanos de intervenciones mínimamente invasivas requieren ampliar la información para realizar las rutas de intervención, este artículo describe un prototipo de realidad mixta de carácter educativo o prequirúrgico que hace uso del Casco Metavisión Meta II. Se crearon objetos 3D de estructuras morfológicas para neurocirugía y laparoscopia a partir de imágenes obtenidas de resonancia magnética MRI y TAC de un paciente real, con el fin de simular el acceso al cerebro y hacer reconocimiento del área abdominal. Método: Este prototipo tiene un enfoque educativo cuyo objetivo es incentivar el reconocimiento de esquemas morfológicos de órganos, para lo cual se diseñaron tres pruebas. Estas pruebas consistieron en la búsqueda de tumores a través de la navegación y la interacción con un objeto exhibido en el casco de realidad mixta Meta 2. Para el área neurológica se dedicaron dos de las tres pruebas, en las dos primeras pruebas se midió el tiempo de búsqueda con cinco tumores, y para el área abdominal se realizó también una prueba para la búsqueda de dos tumores, diseñándose diversas interacciones en el recorrido espacial del objeto 3D generado, usando pantallas con despliegues de los cortes tomados de imágenes de tomografía computarizada. Posterior al desarrollo de las tres pruebas se realizó un proceso de medición de inmersión a partir del uso de un cuestionario. Resultados: El 100% de los usuarios encontró altamente interesante la aplicación, en tanto que el 90% expreso que intento fijar su foco de atención en el desarrollo exitoso de la prueba, indicador del nivel de absorción de la aplicación. también el 70% de los usuarios describió su experiencia como de alto nivel de inmersión. Conclusiones: Las pruebas demostraron que el prototipo es usable, absorbente y con un nivel de inmersión aceptable.
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Leon, Piera, Roberta Rivellini, Fabiola Giudici, Antonio Sciuto, Felice Pirozzi, and Francesco Corcione. "3D Vision Provides Shorter Operative Time and More Accurate Intraoperative Surgical Performance in Laparoscopic Hiatal Hernia Repair Compared With 2D Vision." Surgical Innovation 24, no. 2 (January 24, 2017): 155–61. http://dx.doi.org/10.1177/1553350616687434.

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Background. The aim of this study is to evaluate if 3-dimensional high-definition (3D) vision in laparoscopy can prompt advantages over conventional 2D high-definition vision in hiatal hernia (HH) repair. Study design. Between September 2012 and September 2015, we randomized 36 patients affected by symptomatic HH to undergo surgery; 17 patients underwent 2D laparoscopic HH repair, whereas 19 patients underwent the same operation in 3D vision. Results. No conversion to open surgery occurred. Overall operative time was significantly reduced in the 3D laparoscopic group compared with the 2D one (69.9 vs 90.1 minutes, P = .006). Operative time to perform laparoscopic crura closure did not differ significantly between the 2 groups. We observed a tendency to a faster crura closure in the 3D group in the subgroup of patients with mesh positioning (7.5 vs 8.9 minutes, P = .09). Nissen fundoplication was faster in the 3D group without mesh positioning ( P = .07). Conclusions. 3D vision in laparoscopic HH repair helps surgeon’s visualization and seems to lead to operative time reduction. Advantages can result from the enhanced spatial perception of narrow spaces. Less operative time and more accurate surgery translate to benefit for patients and cost savings, compensating the high costs of the 3D technology. However, more data from larger series are needed to firmly assess the advantages of 3D over 2D vision in laparoscopic HH repair.
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Mo, Wenkui, and Cansong Zhao. "Intelligent Algorithm-Based Magnetic Resonance Imaging in Radical Gastrectomy under Laparoscope." Contrast Media & Molecular Imaging 2021 (September 14, 2021): 1–8. http://dx.doi.org/10.1155/2021/1701447.

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The study focused on the influence of intelligent algorithm-based magnetic resonance imaging (MRI) on short-term curative effects of laparoscopic radical gastrectomy for gastric cancer. A convolutional neural network- (CNN-) based algorithm was used to segment MRI images of patients with gastric cancer, and 158 subjects admitted at hospital were selected as research subjects and randomly divided into the 3D laparoscopy group and 2D laparoscopy group, with 79 cases in each group. The two groups were compared for operation time, intraoperative blood loss, number of dissected lymph nodes, exhaust time, time to get out of bed, postoperative hospital stay, and postoperative complications. The results showed that the CNN-based algorithm had high accuracy with clear contours. The similarity coefficient (DSC) was 0.89, the sensitivity was 0.93, and the average time to process an image was 1.1 min. The 3D laparoscopic group had shorter operation time (86.3 ± 21.0 min vs. 98 ± 23.3 min) and less intraoperative blood loss (200 ± 27.6 mL vs. 209 ± 29.8 mL) than the 2D laparoscopic group, and the difference was statistically significant ( P < 0.05 ). The number of dissected lymph nodes was 38.4 ± 8.5 in the 3D group and 36.1 ± 6.0 in the 2D group, showing no statistically significant difference ( P > 0.05 ). At the same time, no statistically significant difference was noted in postoperative exhaust time, time to get out of bed, postoperative hospital stay, and the incidence of complications ( P > 0.05 ). It was concluded that the algorithm in this study can accurately segment the target area, providing a basis for the preoperative examination of gastric cancer, and that 3D laparoscopic surgery can shorten the operation time and reduce intraoperative bleeding, while achieving similar short-term curative effects to 2D laparoscopy.
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Dissertations / Theses on the topic "Laparoscopia 3D"

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Santos, Pedro. "Patch based 3D reconstruction of the liver surface from laparoscopic videos." Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/11773.

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Mestrado em Engenharia Mecânica
Endoscope is commonly used in Laparoscopic surgery. It allows to the doctor to perform the surgery without opening a cavity. Therefore, it allows the surgeon to perform smaller incisions and consequently diminish the risk of infection. An investigation regarding the reconstruction of the liver surface from a sequence of images obtained from an endoscope video has been done by the Vision Institute of TUHH, in cooperation with the Medical Center Hamburg-Eppendorf. The goal of this paper is to optimize that reconstruction. Previous works in the institute allowed, using matlab functions, to obtain a first reconstruction. Having the matrices of the transformations between cameras and the reconstructed points in 3D, the goal is to optimize that using a patch based 3D reconstruction. The method consists of the construction of a patch for every point and trying to find a good normal for the patch. Some tools are used for the optimization like normal cross correlation that is the similarity function used for obtaining the match of the corresponded 2D windows in different cameras, and a nonlinear optimization method to look for the best normal who gives the best match between the windows. The main objective is to evaluate this method and draw conclusions about its utility and viability: can this method be used for the optimization in the case of the endoscope video of a liver surface.
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Boschet, Christophe. "Laparoscopie Répartie." Phd thesis, Université de Grenoble, 2010. http://tel.archives-ouvertes.fr/tel-00689725.

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En chirurgie laparoscopique, les chirurgiens doivent prendre des décisions appropriées en se basant sur une image qui leur offre un point de vue unique du site opératoire. Cette tâche est difficile à réaliser compte tenu du champ de vue limité de l'endoscope et du fait que l'endoscope rigide doit passer par un point d'insertion unique. Ces contraintes obligent les chirurgiens à réaliser des mouvements d'aller-retour avec l'endoscope, alternant entre des vues détaillées et des vues globales de la scène, qui leur permettent de se repérer plus facilement. Dans le but d'observer les parties cachées d'un organe, les chirurgiens aimeraient bien pouvoir changer le point de vue, sans avoir à insérer l'endoscope dans un nouveau point d'insertion. Pour répondre à cette problématique, nous proposons au chirurgien de visualiser une image virtuelle de la cavité abdominale, synthétisée selon un point de vue quelconque. Notre approche est basée sur l'insertion d'un commando de caméras miniatures au sein de la cavité abdominale. Ces caméras sont fixées à la paroi abdominale, aux trocarts ou aux outils chirurgicaux, de sorte qu'au moins l'une d'entre elles soit en mesure de percevoir une information pertinente pour le chirurgien. Les caméras sont regroupées en paires stéréoscopiques pour reconstruire des modèles 3D du site opératoire. Ces modèles fournissent un cadre de référence qui permet la fusion de toutes les images perçues par les caméras, restituée sous forme d'une image stable synthétisée selon tout point de vue. L'image virtuelle est rendue selon le point de vue désiré par le chirurgien, ce qui lui permet d'explorer la cavité abdominale sans intervenir sur les caméras réelles.
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Stoyanov, Danail Valentinov. "Recovering 3D structure and motion in robotic laparoscopic surgery." Thesis, Imperial College London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.430137.

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Ali, Nader Mahmoud Elshahat Elsayed. "Visual monocular SLAM for minimally invasive surgery and its application to augmented reality." Thesis, Strasbourg, 2018. http://www.theses.fr/2018STRAD011/document.

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La création d'informations 3D denses à partir d'images endoscopiques intraopératoires, ainsi que le calcul de la position relative de la caméra endoscopique, sont des éléments fondamentaux pour un guidage de qualité durant la chirurgie guidée par l'image. Par exemple, cela permet de superposer modèle pré-opératoire via la réalité augmentée. Cette thèse présente une approche pour l'estimation de ces deux information basées sur une approche de localisation et cartographie simultanées (SLAM). Nous découplons la reconstruction dense de l'estimation de la trajectoire de la caméra, aboutissant à un système qui combine la précision du SLAM, et une reconstruction plus complète. Les solutions proposées dans cette thèse ont été validées sur de séquences porcines provenant de différents ensembles de données. Ces solutions n'ont pas besoin de matériel de suivi externe ni d'intervention. Les seules entrées nécessaires sont les trames vidéo d'un endoscope monoculaire
Recovering dense 3D information from intra-operative endoscopic images together with the relative endoscope camera pose are fundamental blocks for accurate guidance and navigation in image-guided surgery. They have several important applications, e.g., augmented reality overlay of pre-operative models. This thesis provides a systematic approach for estimating these two pieces of information based on a pure vision Simultaneous Localization And Mapping (SLAM). We decouple the dense reconstruction from the camera trajectory estimation, resulting in a system that combines the accuracy and robustness of feature-based SLAM with the more complete reconstruction of direct SLAM methods. The proposed solutions in this thesis have been validated on real porcine sequences from different datasets and proved to be fast and do not need any external tracking hardware nor significant intervention from medical staff. The sole input is video frames of a standard monocular endoscope
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Bondarenko, V. V. "The Da Vinci surgical system." Thesis, Sumy State University, 2014. http://essuir.sumdu.edu.ua/handle/123456789/45545.

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A surgeon may have many problems during and after each surgery, they include: postoperative complications, difficulties during the procedure, long duration of it which causes tiredness of a surgeon. That is why medical engineers invented a new surgical system called da Vinci. It was established in 2010 and has got many supporters since that time. Using the da Vinci Surgical System, the surgeon has a 3D image inside the patient’s body (it translates from an endoscope, which is equipped with a high quality camera and the light source at the tip). The image from the patient’s body is available on a large monitor (it means that other surgeons can view the procedure and give pieces of advice to the main surgeon). An advantage over the simple laparoscopic procedure is that da Vinci has 3D image, while laparoscopic generally has 2D.
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Lin, Bingxiong. "Visual SLAM and Surface Reconstruction for Abdominal Minimally Invasive Surgery." Scholar Commons, 2015. http://scholarcommons.usf.edu/etd/5849.

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Depth information of tissue surfaces and laparoscope poses are crucial for accurate surgical guidance and navigation in Computer Assisted Surgeries (CAS). Intra-operative Three Dimensional (3D) reconstruction and laparoscope localization are therefore two fundamental tasks in CAS. This dissertation focuses on the abdominal Minimally Invasive Surgeries (MIS) and presents laparoscopic-video-based methods for these two tasks. Different kinds of methods have been presented to recover 3D surface structures of surgical scenes in MIS. Those methods are mainly based on laser, structured light, time-of-flight cameras, and video cameras. Among them, laparoscopic-video-based surface reconstruction techniques have many significant advantages. Specifically, they are non-invasive, provide intra-operative information, and do not introduce extra-hardware to the current surgical platform. On the other side, laparoscopic-video-based 3D reconstruction and laparoscope localization are challenging tasks due to the specialties of the abdominal imaging environment. The well-known difficulties include: low texture, homogeneous areas, tissue deformations, and so on. The goal of this dissertation is to design novel 3D reconstruction and laparoscope localization methods and overcome those challenges from the abdominal imaging environment. Two novel methods are proposed to achieve accurate 3D reconstruction for MIS. The first method is based on the detection of distinctive image features, which is difficult in MIS images due to the low-texture and homogeneous tissue surfaces. To overcome this problem, this dissertation first introduces new types of image features for MIS images based on blood vessels on tissue surfaces and designs novel methods to efficiently detect them. After vessel features have been detected, novel methods are presented to match them in stereo images and 3D vessels can be recovered for each frame. Those 3D vessels from different views are integrated together to obtain a global 3D vessel network and Poisson reconstruction is applied to achieve large-area dense surface reconstruction. The second method is texture-independent and does not rely on the detection of image features. Instead, it proposes to mount a single-point light source on the abdominal wall. Shadows are cast on tissue surfaces when surgical instruments are waving in front of the light. Shadow boundaries are detected and matched in stereo images to recover the depth information. The recovered 3D shadow curves are interpolated to achieve dense reconstruction of tissue surfaces. One novel stereoscope localization method is designed specifically for the abdominal environment. The method relies on RANdom SAmple Consensus (RANSAC) to differentiate rigid points and deforming points. Since no assumption is made on the tissue deformations, the proposed methods is able to handle general tissue deformations and achieve accurate laparoscope localization results in the abdominal MIS environment. With the stereoscope localization results and the large-area dense surface reconstruction, a new scene visualization system, periphery augmented system, is designed to augment the peripheral areas of the original video so that surgeons can have a larger field of view. A user-evaluation system is designed to compare the periphery augmented system with the original MIS video. 30 subjects including 4 surgeons specialized in abdominal MIS participate the evaluation and a numerical measure is defined to represent their understanding of surgical scenes. T-test is performed on the numerical errors and the null hypothesis that the periphery augmented system and the original video have the same mean of errors is rejected. In other words, the results validate that the periphery augmented system improves users' understanding and awareness of surgical scenes.
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Chan, Yen Ping, and 詹彥炳. "Laparoscopic Surgery Simulator(3D Reconstruction and System Integration)." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/69129826135435635580.

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碩士
國立中央大學
機械工程學系
85
Laparoscopy has been wildly applied in kinds of surgeries, becasuse of its minimal invasion, less trauma, quick recovery, shorten surgery time and time to stay in hospital. But its operation requires experienced skill and good hand-eye coordination, therefore it''s a long time for a graduating medical student to become eligible for being certified as asurgical specialist. With our own laparoscopic input devices and computergraphics techniques, a laparoscopic surgical simulator will be designed to train the surgeon''s operation skill on laparoscopy. The research is based on personal computer. In medical image 3D reconstruction, Marching Cubes Algorithm is adopted to generate 3D surfacemodel of the contigous medical images, and the model will be used in the surgical simulation system. In this system, image transmission is completed with image compression and network communication, also the camera motion is controlled by the voice.
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Wu, Kuan-Ying, and 吳冠穎. "Effects of 3D Display on Laparoscopic Surgery Training." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/frcu43.

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碩士
國立臺灣科技大學
工業管理系
104
Laparoscopic surgery provides many advantages, such as reducing pain, minimizing damage to healthy tissues, and faster recovery time. It also has some limitations mainly caused by inaccurate depth perception, limited field of view and more execution time required. Recently, 3D imaging technology had been applied to laparoscopic surgery. However, it brought some visual fatigue and discomfort during or after surgery. In this study, two tasks, peg transferring (more depth perception needed) and circle tracing (less depth perception needed), were used to be performed with two display conditions (2D and 3D) by students from different universities. The result indicated that performance of peg transferring was better in 3D compared with 2D imaging, as it showed lower movement time and errors with 3D imaging. On the other hand, the performance of circle tracing showed the reverse because participants performed worse in 3D imaging. However, no significant difference on decrease of CFF and mental workload was observed. The result from the subjective questionnaires showed performing tasks with 3D images induced more visual fatigue and discomfort. From the analytical results in present study, it can be concluded that 3D imaging had better performance for tasks that require more depth perceptions, but worse when the tasks require less depth perception. Even if the current developments in 3D technology had interesting promises, it is still premature to say the technology provides perfect image quality which is free of limitations. Therefore, to enhance the performance of laparoscopic surgery, it is worth looking forward to 3D imaging technology that can provide a better image quality with minimum side effects.
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Sung, Wen-Hsu, and 宋文旭. "3D Reconstruction via Medical Images and Laparoscopic Surgery Simulation System." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/23749498967941079874.

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博士
國立中央大學
機械工程研究所
91
The study integrated virtual reality technology and developed a system which would reconstruct three-dimensional (3-D) models and provide highly accurate volume estimations from selected areas of medical images. After development processes, we devised an experiment to test and verify the results of 3-D reconstruction and volume estimations. The experiment result showed that the appearances of reconstruction models were very similar to the real ones, and the value of volume estimations were very close to the values evaluated by drainage. After verifying the accuracy of volume estimations, another clinical experiment was implemented. Three kinds of tumor volume estimations, including the single maximum diameter method, ellipse method and our 3-D integration method, were performed and the relationship of these volume estimations among associated cervical cancer prognostic parameters was evaluated.This study found that the parameters of lymph nodes metastasis, parametrial involvement and tumor differentiation are volume dependent. 3D-tumor volumetry showed superior discrimination of these parameters than current single maximum diameter evaluation suggesting its potential as a rapid method for initial prediction of prognostic factors in cervical cancer. In this study, a virtual reality-based simulator system was developed for extensive laparoscopic surgery training. The purpose of this study is to assess the feasibility of virtual reality-based laparoscopic gynecology simulation system. Ten healthy, non-disabled volunteers were recruited. The surgical procedure is a process of tubal sterilization by cauterization. Volunteers followed the training procedure fifteen trials in the first test and retest respectively. Stable performances were obtained after about eight trials for all subjects. The results of this study indicate that the system is stable and the system has fair high test-retest reliability. Another thirty two non-disabled volunteers were recruited for participating in the different signal feedback experiment. The purpose of this experiment is to assess the influence of text, sound and lateral view cues on the manipulation performance in the system. The average of task time, error times and clip times are the parameters used to evaluate the manipulation performance. It can be concluded that all of the text, sound and lateral view cues are significant cues of manipulation performance of this simulation system. Finally, we employed another laparoscopic gynecology simulating device with force feedback functions, and devised a new function of changing the field of view of laparoscope camera for enhancing the capability of this simulation system. The feasibility and different signal feedback experiments were executed again. The results of the experimants indicate that the new system is stable and has fair high test-retest reliability. Because of the effects of the functions and design of this experiment, the experiment results shows that the new functions, including both force feedback and changing the field of view of laparoscope camera, are not significant cues of manipulation performance of this simulation system.
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Guo, Zong-Han, and 郭宗翰. "Mental Workload Evaluation of 2D and 3D Laparoscopy Simulation through EEG Measurement." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/gfbzs9.

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碩士
國立臺灣科技大學
工業管理系
105
Laparoscopic surgery is slowly replacing the traditional invasive surgeries due to the benefits, including speedy recovery time, and reducing the chance of complications. But this surgical approach also limits the surgeons' depth perception and vision. They need to spend more time to complete the operation, thus leading the surgeons to have higher mental workloads. This research, through the usage of EEG and NASA TLX analyzed 12 participants who performed tasks with different depth perception to understand the effect of 2D and 3D images on one’s mental workload. This experiment uses Alpha brainwave and blink rate as the index for mental pressure while the Gamma wave is used as the index for concentration. Prior to the start of the experiment, participants were asked to rest for 2 minutes to calibrate the brainwave signals from unwanted noises. Afterwards, participants were asked to wear the Muse headband and to stand 2 meters away from the 3D monitor while performing the two tasks (peg transfer and circle tracing). From the brainwave result, 3D display results in higher Alpha wave activity, blink rate, and lower Gamma wave activity. In general, the participants feel more relaxed and have lower concentration level in the 3D environment. The NASA TLX survey results also show that stereoscopic vision can be helpful in lowering mental workload and frustration. Due to the result of both subjective and objective analysis, we conclude that the 3D display technology provides helpful depth perception and direction, thus lowering the mental demand of the participants during the completion of the tasks. However, 3D displays do not produce good enough images, therefore causing eye-fatigue to the participants.
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Books on the topic "Laparoscopia 3D"

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Manual of 3D Laparoscopy and Operative Oncology. Jaypee Brothers Medical Publishers (P) Ltd., 2018. http://dx.doi.org/10.5005/jp/books/18025.

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Painer, Sven. Variation Based Dense 3D Reconstruction: Application on Monocular Mini-Laparoscopic Sequences. Springer Vieweg. in Springer Fachmedien Wiesbaden GmbH, 2016.

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Painer, Sven. Variation Based Dense 3D Reconstruction: Application on Monocular Mini-Laparoscopic Sequences. Springer Vieweg, 2016.

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Book chapters on the topic "Laparoscopia 3D"

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Chan, Samson Yun-sang, Steffi Kar-kei Yuen, and Eddie Shu-yin Chan. "3D Laparoscopy." In Urologic Surgery in the Digital Era, 69–77. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-63948-8_4.

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Moll, Markus, Hsiao-Wei Tang, and Luc Van Gool. "GPU-Accelerated Robotic Intra-operative Laparoscopic 3D Reconstruction." In Information Processing in Computer-Assisted Interventions, 91–101. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-13711-2_9.

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Malik, Sajid. "Robotic Surgery: Operating Room Setup and Docking." In Mastering Endo-Laparoscopic and Thoracoscopic Surgery, 555–63. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-3755-2_75.

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AbstractRobotic surgery (RS) continues to impart its role in minimally invasive surgery (MIS) since its first emergence. It has rapidly been adopted by different specialties including general surgery, urology, gynecology, and orthopedic surgery, and now is becoming a mainstay of MIS technique around the globe [1–3]. During the last 30 years, many different robotic systems came into surgical practice but the da Vinci® is currently the most commonly utilized and is available in four different models (standard, streamlined, streamlined High definition, S-integrated). Despite its enhanced view of 3D system and angulations of instruments, its practical application for training surgical residents is less emphasized and addressed [4, 5]. This chapter will guide in the basic principles of setting operating room and equipments for da Vinici®. It is further emphasized that hands-on training on simulators and in operating rooms under a trained mentor is highly suggestive of learning robotic skills.
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Marcinczak, Jan Marek, and Rolf-Rainer Grigat. "Total Variation Based 3D Reconstruction from Monocular Laparoscopic Sequences." In Lecture Notes in Computer Science, 239–47. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-13692-9_23.

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Wolf, Rémi, Josselin Duchateau, Philippe Cinquin, and Sandrine Voros. "3D Tracking of Laparoscopic Instruments Using Statistical and Geometric Modeling." In Lecture Notes in Computer Science, 203–10. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-23623-5_26.

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Okuda, Junji, Kanji Nishiguchi, Keitaro Tanaka, Sang-Woong Lee, Masao Toyoda, and Nobuhiko Tanigawa. "Clinical application of 3D-CT angiography for laparoscopic colorectal surgery." In CARS 2002 Computer Assisted Radiology and Surgery, 1087. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-642-56168-9_243.

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Mielke, Tonia, Fabian Joeres, and Christian Hansen. "Natural 3D Object Manipulation for Interactive Laparoscopic Augmented Reality Registration." In Virtual, Augmented and Mixed Reality: Design and Development, 317–28. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-05939-1_21.

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Collins, Toby, and Adrien Bartoli. "3D Reconstruction in Laparoscopy with Close-Range Photometric Stereo." In Medical Image Computing and Computer-Assisted Intervention – MICCAI 2012, 634–42. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33418-4_78.

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Huang, Baoru, Jian-Qing Zheng, Anh Nguyen, Chi Xu, Ioannis Gkouzionis, Kunal Vyas, David Tuch, Stamatia Giannarou, and Daniel S. Elson. "Self-supervised Depth Estimation in Laparoscopic Image Using 3D Geometric Consistency." In Lecture Notes in Computer Science, 13–22. Cham: Springer Nature Switzerland, 2022. http://dx.doi.org/10.1007/978-3-031-16449-1_2.

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Hayashibe, Mitsuhiro, Naoki Suzuki, Asaki Hattori, and Yoshihiko Nakamura. "Intraoperative Fast 3D Shape Recovery of Abdominal Organs in Laparoscopy." In Medical Image Computing and Computer-Assisted Intervention — MICCAI 2002, 356–63. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-45787-9_45.

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Conference papers on the topic "Laparoscopia 3D"

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Kwan, Elliott, and Hong Hua. "Tri-Aperture Monocular Laparoscopic Objective for Stereoscopic and Wide Field of View Acquisition." In 3D Image Acquisition and Display: Technology, Perception and Applications. Washington, D.C.: OSA, 2021. http://dx.doi.org/10.1364/3d.2021.3th2d.6.

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Rado, Janos, Csaba Ducso, Gabor Battistig, Gabor Szebenyi, Gabor Szebenyi, Peter Furjes, Zbigniew Nawrat, and Kamil Rohr. "3D force sensors for laparoscopic surgery tool." In 2016 Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS (DTIP). IEEE, 2016. http://dx.doi.org/10.1109/dtip.2016.7514829.

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Andy Huang, Chenan, and Sang-Eun Song. "Design And Development of a Novel Assistive Device for Laparoscopic Surgery Using Granular Jamming." In 2022 Design of Medical Devices Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/dmd2022-1007.

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Abstract Laparoscopic surgery has a notably high learning curve, hindering typical approaches to training. Due to unique challenges that are not present in open surgery (the hinge effect, small field of view (FoV), lack of depth perception, and small workspace), a surgical resident may be delayed in participating in laparoscopic surgery until later in residency. Having a narrow window to complete highly specialized training can lead to graduates feeling under-prepared for solo practice. Additionally, delayed introduction may expose trainees to fewer than 200 laparoscopic cases. Therefore, there is a need for surgical residents to increase both their caseload and training window without compromising patient safety. This project aims to develop and test a proof-of-concept prototype that uses granular jamming technology to controllably vary the force required to move a laparoscopic tool. By increasing tool resistance, the device helps prevents accidental injury to important nearby anatomical structures such as urinary tract, vasculature, and/or bowel. Increasing the safety of laparoscopic surgery would allow residents to begin their training earlier, gaining exposure and confidence. A device to adjust tool resistance has benefits to the experienced surgeon as well – surgeries require continuous tool adjustment and tension, resulting in fatigue. Increasing tool resistance can assist surgeons in situations requiring continuous tension and can also provide safety against sudden movements. This investigational device was prototyped using SolidWorks CAD software, then 3D printed and assessed with a laparoscopic box trainer.
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Kwan, Elliott, Yi Qin, and Hong Hua. "Development of a Light Field Laparoscope for Depth Reconstruction." In 3D Image Acquisition and Display: Technology, Perception and Applications. Washington, D.C.: OSA, 2017. http://dx.doi.org/10.1364/3d.2017.dw1f.2.

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Maekawa, Ryoshuke, Hidehiko Shishido, Yoshinari Kameda, and Itaru Kitahara. "Dense 3D organ modeling from a laparoscopic video." In International Forum on Medical Imaging in Asia 2021, edited by Ruey-Feng Chang. SPIE, 2021. http://dx.doi.org/10.1117/12.2590732.

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Brecht, Sandra V., Matthias Stock, Jens-Uwe Stolzenburg, and Tim C. Lueth. "3D Printed Single Incision Laparoscopic Manipulator System Adapted to the Required Forces in Laparoscopic Surgery." In 2019 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). IEEE, 2019. http://dx.doi.org/10.1109/iros40897.2019.8967729.

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Clancy, Neil T., Jianyu Lin, Shobhit Arya, George B. Hanna, and Daniel S. Elson. "Dual multispectral and 3D structured light laparoscope." In SPIE BiOS, edited by Fred S. Azar and Xavier Intes. SPIE, 2015. http://dx.doi.org/10.1117/12.2080346.

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Zorzal, Ezequiel R., Mauricio Sousa, Pedro Belchior, Joao Madeiras Pereira, Nuno Figueiredo, and Joaquim A. Jorge. "Design requirements to improve laparoscopy via XR." In 2022 IEEE Conference on Virtual Reality and 3D User Interfaces Abstracts and Workshops (VRW). IEEE, 2022. http://dx.doi.org/10.1109/vrw55335.2022.00093.

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Shahin, O., V. Martens, A. Besirevic, M. Kleemann, and A. Schlaefer. "Localization of liver tumors in freehand 3D laparoscopic ultrasound." In SPIE Medical Imaging, edited by David R. Holmes III and Kenneth H. Wong. SPIE, 2012. http://dx.doi.org/10.1117/12.912375.

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Stolka, Philipp J., Matthias Keil, Georgios Sakas, Elliot McVeigh, Mohamad E. Allaf, Russell H. Taylor, and Emad M. Boctor. "A 3D-elastography-guided system for laparoscopic partial nephrectomies." In SPIE Medical Imaging. SPIE, 2010. http://dx.doi.org/10.1117/12.844589.

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Reports on the topic "Laparoscopia 3D"

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Dahm, Philipp, Michelle Brasure, Elizabeth Ester, Eric J. Linskens, Roderick MacDonald, Victoria A. Nelson, Charles Ryan, et al. Therapies for Clinically Localized Prostate Cancer. Agency for Healthcare Research and Quality (AHRQ), September 2020. http://dx.doi.org/10.23970/ahrqepccer230.

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Objective. To update findings from previous Agency for Healthcare Research and Quality (AHRQ)- and American Urological Association (AUA) funded reviews evaluating therapies for clinically localized prostate cancer (CLPC). Sources. Bibliographic databases (2013–January 2020); ClinicalTrials.gov; systematic reviews Methods. Controlled studies of CLPC treatments with duration ≥5 years for mortality and metastases and ≥1 year for quality of life and harms. One investigator rated risk of bias (RoB), extracted data, and assessed certainty of evidence; a second checked accuracy. We analyzed English-language studies with low or medium RoB. We incorporated findings from randomized controlled trials (RCTs) identified in the prior reviews if new RCTs provided information on the same intervention comparison. Results. We identified 67 eligible references; 17 were unique RCTs. Among clinically rather than prostate specific antigen (PSA) detected CLPC, Watchful Waiting (WW) may increase mortality and metastases versus Radical Prostatectomy (RP) at 20+ years. Urinary and erectile dysfunction were lower with WW versus RP. WW’s effect on mortality may vary by tumor risk and age but not by race, health status, comorbidities, or PSA. Active Monitoring (AM) probably results in little to no difference in mortality in PSA detected CLPC versus RP or external beam radiation (EBR) plus Androgen Deprivation (AD) regardless of tumor risk. Metastases were slightly higher with AM. Harms were greater with RP than AM and mixed between EBR plus AD versus AM. 3D-conformal EBR and AD plus low-dose-rate brachytherapy (BT) provided a small reduction in all-cause mortality versus three dimensional conformal EBR and AD but little to no difference on metastases. EBR plus AD versus EBR alone may result in a small reduction in mortality and metastases in higher risk disease but may increase sexual harms. EBR plus neoadjuvant AD versus EBR plus concurrent AD may result in little to no difference in mortality and genitourinary toxicity. Conventionally fractionated EBR versus ultrahypofractionated EBR may result in little to no difference in mortality and metastases and urinary and bowel toxicity. Active Surveillance may result in fewer harms than photodynamic therapy and laparoscopic RP may result in more harms than robotic-assisted RP. Little information exists on other treatments. No studies assessed provider or hospital factors of RP comparative effectiveness. Conclusions. RP reduces mortality versus WW in clinically detected CLPC but causes more harms. Effectiveness may be limited to younger men or to those with intermediate risk disease and requires many years to occur. AM results in little to no mortality difference versus RP or EBR plus AD. EBR plus AD reduces mortality versus EBR alone in higher risk CLPC but may worsen sexual function. Adding low-dose-rate BT to 3D-conformal EBR and AD may reduce mortality in higher risk CLPC. RCTs in PSA-detected and MRI staged CLPC are needed.
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