Bibliographies thématiques / Perfusion computed tomography

Littérature scientifique sur le sujet « Perfusion computed tomography »

Auteur : Grafiati
Publié le 11 mars 2023
Mis à jour le 6 septembre 2023

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Articles de revues sur le sujet "Perfusion computed tomography"

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Branch, Kelley R., Ryan D. Haley, Marcio Sommer Bittencourt, Amit R. Patel, Edward Hulten et Ron Blankstein. « Myocardial computed tomography perfusion ». Cardiovascular Diagnosis and Therapy 7, no 5 (octobre 2017) : 452–62. http://dx.doi.org/10.21037/cdt.2017.06.11.

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Ogul, Hayri, Ummugulsum Bayraktutan, Yesim Kizrak, Berhan Pirimoglu, Zeynep Yuceler et M. Erdem Sagsoz. « Abdominal Perfusion Computed Tomography ». Eurasian Journal of Medicine 45, no 1 (1 février 2013) : 50–57. http://dx.doi.org/10.5152/eajm.2013.09.

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Albuquerque, Felipe C. « Editorial : Computed tomography perfusion ». Neurosurgical Focus 30, no 6 (juin 2011) : E9. http://dx.doi.org/10.3171/2011.3.focus1184.

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Jain, Rajan, Lisa Scarpace, Shehanaz Ellika, Lonni R. Schultz, Jack P. Rock, Mark L. Rosenblum, Suresh C. Patel, Ting-Yim Lee et Tom Mikkelsen. « FIRST-PASS PERFUSION COMPUTED TOMOGRAPHY ». Neurosurgery 61, no 4 (1 octobre 2007) : 778–87. http://dx.doi.org/10.1227/01.neu.0000298906.48388.26.

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Abstract OBJECTIVE To differentiate recurrent tumors from radiation effects and necrosis in patients with irradiated brain tumors using perfusion computed tomographic (PCT) imaging. METHODS Twenty-two patients with previously treated brain tumors who showed recurrent or progressive enhancing lesions on follow-up magnetic resonance imaging scans and had a histopathological diagnosis underwent first-pass PCT imaging (26 PCT imaging examinations). Another eight patients with treatment-naïve, high-grade tumors (control group) also underwent PCT assessment. Perfusion maps of cerebral blood volume, cerebral blood flow, and mean transit time were generated at an Advantage Windows workstation using the CT perfusion 3.0 software (General Electric Medical Systems, Milwaukee, WI). Normalized ratios (normalized to normal white matter) of these perfusion parameters (normalized cerebral blood volume [nCBV], normalized cerebral blood flow [nCBF], and normalized mean transit time [nMTT]) were used for final analysis. RESULTS Fourteen patients were diagnosed with recurrent tumor, and eight patients had radiation necrosis. There was a statistically significant difference between the two groups, with the recurrent tumor group showing higher mean nCBV (2.65 versus 1.10) and nCBF (2.73 versus 1.08) and shorter nMTT (0.71 versus 1.58) compared with the radiation necrosis group. For nCBV, a cutoff point of 1.65 was found to have a sensitivity of 83.3% and a specificity of 100% to diagnose recurrent tumor and radiation necrosis. Similar sensitivity and specificity were 94.4 and 87.5%, respectively, for nCBF with a cutoff point of 1.28 and 94.4 and 75%, respectively, for nMTT with a cutoff point of 1.44 to diagnose recurrent tumor and radiation necrosis. CONCLUSION PCT may aid in differentiating recurrent tumors from radiation necrosis on the basis of various perfusion parameters. Recurrent tumors show higher nCBV and nCBF and lower nMTT compared with radiation necrosis.
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Vehabovic-Delic, Aida, Marija Balic, Christopher Rossmann, Thomas Bauernhofer, Hannes A. Deutschmann et Helmut Schoellnast. « Volume Computed Tomography Perfusion Imaging ». Journal of Computer Assisted Tomography 43, no 3 (2019) : 493–98. http://dx.doi.org/10.1097/rct.0000000000000848.

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Achenbach, Stephan. « Stress Computed Tomography Myocardial Perfusion ». Journal of the American College of Cardiology 54, no 12 (septembre 2009) : 1085–87. http://dx.doi.org/10.1016/j.jacc.2009.05.048.

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Rubiera, Marta, Alvaro Garcia-Tornel, Marta Olivé-Gadea, Daniel Campos, Manuel Requena, Carla Vert, Jorge Pagola et al. « Computed Tomography Perfusion After Thrombectomy ». Stroke 51, no 6 (juin 2020) : 1736–42. http://dx.doi.org/10.1161/strokeaha.120.029212.

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Background and Purpose— Despite recanalization, almost 50% of patients undergoing endovascular treatment (EVT) experience poor outcome. We aim to evaluate the value of computed tomography perfusion as immediate outcome predictor postendovascular treatment. Methods— Consecutive patients receiving endovascular treatment who achieved recanalization (modified Thrombolysis in Cerebral Ischemia [mTICI] 2a-3) underwent computed tomography perfusion within 30 minutes from recanalization (CTPpost). Hypoperfusion was defined as the Tmax>6 second volume; hyperperfusion as visually increased cerebral blood flow/cerebral blood volume with reduced Tmax compared with unaffected hemisphere. Dramatic clinical recovery (DCR) was defined as 24-hour National Institutes of Health Stroke Scale score ≤2 or ≥8 points drop. Delayed recovery was defined as no-DCR with favorable outcome (modified Rankin Scale score 0–2) at 3 months. Results— We included 151 patients: median National Institutes of Health Stroke Scale score 16 (interquartile range, 10–21), median admission ASPECTS 9 (interquartile range, 8–10). Final recanalization was the following: mTICI2a 11 (7.3%), mTICI2b 46 (30.5%), and mTICI3 94 (62.3%). On CTPpost, 80 (52.9%) patients showed hypoperfusion (median Tmax>6 seconds: 4 cc [0–25]) and 32 (21.2%) hyperperfusion. There was an association between final TICI and CTPpost hypoperfusion(median Tmax>6: 91 [56–117], 15 [0–37.5], and 0 [0–7] cc, for mTICI 2a, 2b, and 3, respectively, P <0.01). Smaller hypoperfusion volumes on CTPpost were observed in patients with DCR (0 cc [0–13] versus non-DCR 8 cc [0–56]; P <0.01) or favorable outcome (modified Rankin Scale score 0–2: 0 cc [0–13] versus 7 [0–56] cc; P <0.01). No associations were detected with hyperperfusion pattern. An hypoperfusion volume <3.5 cc emerged as independent predictor of DCR (OR, 4.1 [95% CI, 2.0–8.3]; P <0.01) and 3 months favorable outcome (OR, 3.5 [95% CI, 1.6–7.8]; P <0.01). Conclusions— Hypoperfusion on CTPpost constitutes an immediate accurate surrogate marker of success after endovascular treatment and identifies those patients with delayed recovery and favorable outcome.
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Miles, K. A. « Brain perfusion : computed tomography applications ». Neuroradiology 46, S2 (décembre 2004) : s194—s200. http://dx.doi.org/10.1007/s00234-004-1333-9.

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Garcia-Esperon, Carlos, Andrew Bivard, Christopher Levi et Mark Parsons. « Use of computed tomography perfusion for acute stroke in routine clinical practice : Complex scenarios, mimics, and artifacts ». International Journal of Stroke 13, no 5 (15 mars 2018) : 469–72. http://dx.doi.org/10.1177/1747493018765493.

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Background Computed tomography perfusion is becoming widely accepted and used in acute stroke treatment. Computed tomography perfusion provides pathophysiological information needed in the acute decision making. Moreover, computed tomography perfusion shows excellent correlation with diffusion-weighted imaging and perfusion-weighted sequences to evaluate core and penumbra volumes. Multimodal computed tomography perfusion has practical advantages over magnetic resonance imaging, including availability, accessibility, and speed. Nevertheless, it bears some limitations, as the limited accuracy for small ischemic lesions or brainstem ischemia. Interpretation of the computed tomography perfusion maps can sometimes be difficult. The stroke neurologist faces complex or atypical cases of cerebral ischemia and stroke mimics, and needs to decide whether the “lesions” on computed tomography perfusion are real or artifact. Aims The purpose of this review is, based on clinical cases from a comprehensive stroke center, to describe the added value that computed tomography perfusion can provide to the stroke physician in the acute phase before a treatment decision is made.
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Leiva-Salinas, Carlos, Bin Jiang et Max Wintermark. « Computed Tomography, Computed Tomography Angiography, and Perfusion Computed Tomography Evaluation of Acute Ischemic Stroke ». Neuroimaging Clinics of North America 28, no 4 (novembre 2018) : 565–72. http://dx.doi.org/10.1016/j.nic.2018.06.002.

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Thèses sur le sujet "Perfusion computed tomography"

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Jones, Andrew Thomas. « Regional pulmonary perfusion using electron beam computed tomography ». Thesis, Imperial College London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391623.

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Eck, Brendan Lee. « Myocardial Perfusion Imaging with X-Ray Computed Tomography ». Case Western Reserve University School of Graduate Studies / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=case1525187076597075.

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Williams, Michelle Claire. « Computed tomography imaging of the heart ». Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/25852.

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Computed tomography imaging has revolutionised modern medicine and we can now study the body in greater detail than ever before. Cardiac computed tomography has the potential to provide information not just on coronary anatomy, but also on myocardial function, perfusion and viability. This thesis addresses the optimisation and validation of computed tomography imaging of the heart using a wide volume 320-multidetector scanner. Computed tomography coronary angiography now has diagnostic accuracy comparable to invasive coronary angiography. However, radiation dose remains an important concern. It is therefore important to minimise computed tomography radiation dose while maintaining image quality. I was able to demonstrate that iterative reconstruction and patient tailored imaging techniques led to a 39% reduction in radiation dose in computed tomography coronary angiography, while maintaining subjective and objective assessments of image quality. In addition, I demonstrated that diagnostic images can be obtained in 99% of unselected patients presenting with suspected coronary artery disease when using single heart-beat 320- multidetector computed tomography coronary angiography. Computed tomography myocardial perfusion imaging can provide additional and complementary information as compared to computed tomography coronary angiography that can aid diagnosis and management. I established both quantitative and qualitative assessment of computed tomography myocardial perfusion imaging and validated it against both a clinical “gold-standard”, fractional flow reserve during invasive coronary angiography, and a physiological “gold-standard”, positron emission tomography with oxygen-15 labelled water. Finally, I was able to show that techniques to reduce radiation dose can also be applied to computed tomography myocardial perfusion imaging, leading to a 60% reduction in radiation dose, while maintaining image quality. In my thesis, I have established that comprehensive cardiac angiographic and perfusion imaging can be performed with wide volume computed tomography in a broad generalizable population of patients with relatively low radiation exposure. These techniques provide both structural and functional assessments from a single imaging modality that are valid and readily applicable to the clinic in the assessment and management of patients with suspected coronary artery disease.
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Levi, Jacob. « Automated Beam Hardening Correction for Myocardial Perfusion Imaging using Computed Tomography ». Case Western Reserve University School of Graduate Studies / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=case1553868329519413.

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Goh, Vicky Joo-Lin. « Perfusion computed tomography (CT) as a determinant and differentiator of colorectal disease ». Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.612137.

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Fieselmann, Andreas [Verfasser]. « Interventional Perfusion Imaging Using C-arm Computed Tomography : Algorithms and Clinical Evaluation / Andreas Fieselmann ». Aachen : Shaker, 2012. http://d-nb.info/106773645X/34.

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Willows, Brooke. « Computed Tomography Perfusion Imaging In Acute Ischemic Stroke : Do The Benefits Outweigh The Costs ? » Thesis, The University of Arizona, 2017. http://hdl.handle.net/10150/623622.

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A Thesis submitted to The University of Arizona College of Medicine - Phoenix in partial fulfillment of the requirements for the Degree of Doctor of Medicine.
Current stroke imaging protocol at Barrow Neurological Institute calls for a noncontrast computed tomography (NCCT), a computed tomography angiography (CTA), and a computed tomography perfusion (CTP) at the time of presentation to the emergency department (ED), and follow up imaging includes magnetic resonance diffusion weighted imaging (MR‐DWI). This information is used to determine the appropriateness and safety of tissue plasminogen activator (tPA) administration. Previous studies have shown the risk for post‐tPA hemorrhagic conversion rises significantly as the size of the infarct core increases. Thus, it is of great importance to have an accurate method of measuring core infarct size in patients presenting with acute ischemic stroke. The purpose of our study is to determine if CTP correctly identifies the infarct core and if post‐tPA hemorrhagic conversion is related to the size of the infarct core and/or the accuracy of CTP in identifying the infarct core. The ultimate goal is to improve patient outcomes by decreasing the morbidity and mortality associated with tPA administration. This study is a retrospective chart review of all patients who presented to the ED during a one year period with signs and symptoms of acute ischemic stroke who then subsequently received tPA. Imaging was also reviewed, including the NCCT, CTA, CTP, and MRDWI for each patient. In this study, MR‐DWI is used as the gold standard for determining the presence or absence of an infarct core. CTP and MR‐DWI are in agreement of the presence of an infarct core in 7 patients, or 10 percent of the time. Similarly, CTP and MR‐DWI are in agreement of the absence of an infarct core in 31 patients, or 44 percent of the time. In the other 32 patients, CTP and MR‐DWI are in disagreement. The percent correlation between CTP and MR‐DWI was found to be 24 percent with a p‐value < 0.05. As for post‐tPA hemorrhagic conversion, 12 percent of patients had hemorrhagic conversion, and when the hemorrhage rate was compared to the size of the infarct core, the odds of post‐tPA hemorrhagic conversion were 56 times higher in the group of patients with infarct cores larger than one‐third of a vascular territory than in patients with smaller infarct cores with a p‐value < 0.001. Although no significant correlation was found between the accuracy of CTP data and the rate of post‐tPA hemorrhagic conversion, patients with concordant CTP and MR data had a 46% lower likelihood of post‐tPA hemorrhagic conversion than did patients with contradictory CTP and MR‐DWI data. Conclusion: Because patients with infarct cores larger than one‐third of a vascular territory are 56 times more likely to hemorrhage than patients with smaller infarct cores and CTP is less accurate than MR‐DWI in identifying the infarct core in patients presenting with acute ischemic stroke, CTP studies should not be part of the acute stroke imaging protocol. Another imaging modality, such as MR‐DWI, may be preferential in the setting of acute ischemic stroke to identify the infarct core.
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Hughes, Tyler John. « A template-based method for semi-quantitative single photon emission computed tomography myocardial perfusion imaging ». Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/42844.

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This thesis presents the template-based quantitative perfusion SPECT (TQPS) method, which is designed for the semi-quantitative analysis in SPECT myocardial perfusion imaging (MPI). Unlike traditional methods employing normal patient databases as the healthy standard when quantifying myocardial perfusion defects, the proposed method utilizes a patient-specific template for its healthy standard. In doing so, TQPS aims to overcome a number of the limitations associated with the non-patient-specific nature of normal patient databases. The TQPS method begins with the construction of a template, which is a 3D digital model of the patient’s healthy heart, using the SPECT reconstructed image. The template is then projected, reconstructed and sampled into the bulls-eye map domain. A ratio of the patient and template bulls-eye images produces a final corrected image in which a patient-specific threshold is applied to identify perfusion defects. Traditional semi-quantitative cardiac measurements, such as the summed stress score and perfusion defect extent were employed for the analysis. This thesis presents the investigation of TQPS in three phases: method evaluation, optimization, and validation. The first two phases focused on controlled simulation studies in which the assessment was based on how well TQPS was able to quantify myocardial perfusion defects relative to the truth. In these studies, the method was able to spatially define perfusion defects with a sensitivity and specificity of 79% and 76%, respectively, while estimating the global perfusion defect size to within 3% of the truth. In the third phase, the aim was to clinically evaluate TQPS relative to an established commercial method (QPS). TQPS exhibited improved specificity relative to the commercial method for the detection of significant coronary artery disease in the left anterior descending artery. The sensitivities for detecting 70% stenosis or greater in the LAD, LCX and RCA territories for QPS and TQPS were 60%, 82%, 75%, and 88%, 94%, 75%, respectively. In summary, the TQPS method was able to accurately quantify myocardial perfusion defects in SPECT MPI, while exhibiting considerable advantages over a traditional normal database method, particularly in the LAD coronary territory.
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Paolani, Giulia. « Brain perfusion imaging techniques ». Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.

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In questo lavoro si sono analizzate due diverse tecniche di imaging di perfusione implementate in Risonanza Magnetica e Tomografia Assiale Computerizzata (TAC). La prima analisi proposta riguarda la tecnica di Arterial Spin Labeling che permette di ottenere informazioni di perfusione senza la somministrazione di un mezzo di contrasto. In questo lavoro si è sviluppata e testata una pipeline completa, attraverso lo sviluppo sia di un protocollo di acquisizione che di post-processing. In particolare, sono stati definiti parametri di acquisizione standard, che permettono di ottenere una buona qualità dei dati, successivamente elaborati attraverso un protocollo di post processing che, a partire dall'acquisizione di un esperimento di ASL, permette il calcolo di una mappa quantitativa di cerebral blood flow (CBF). Nel corso del lavoro, si è notata una asimmetria nella valutazione della perfusione, non giustificata dai dati e probabilmente dovuta ad una configurazione hardware non ottimale. Risolta questa difficoltà tecnica, la pipeline sviluppata sarà utilizzata come standard per l’acquisizione e il post-processing di dati ASL. La seconda analisi riguarda dati acquisiti attraverso esperimenti di perfusione TAC. Si è presa in considerazione la sua applicazione a casi di infarti cerebrali in cui le tecniche di trombectomia sono risultate inefficaci. L'obiettivo di questo lavoro è stata la definizione di una pipeline che permetta il calcolo autonomo delle mappe di perfusione e la standardizzazione della trattazione dei dati. In particolare, la pipeline permette l’analisi di dati di perfusione attraverso l’utilizzo di soli software open-source, contrapponendosi alla metodologia operativa comunemente utilizzata in clinica e rendendo le analisi riproducibili. Il lavoro proposto è inserito in un progetto più ampio, che include future analisi longitudinali con coorti di pazienti più ampie per definire e validare parametri predittivi degli outcome dei pazienti.
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Dougherty, Timothy M. « Quantitative computed tomography based measures of vascular dysfunction for identifying COPD phenotypes and subphenotypes ». Thesis, University of Iowa, 2016. https://ir.uiowa.edu/etd/2069.

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Chronic obstructive pulmonary disease (COPD) is a debilitating lung disease almost exclusively related to tobacco smoke. COPD symptoms are typical of numerous other ailments making it difficult to diagnose and track. Technological advancements in CT imaging have allowed clinicians and researchers to expand simple structural information to functional information. These advancements have helped to increase the use of CT imaging in the study of smoking related lung disease. In this thesis, we investigate observations from a previous study which suggested pulmonary artery constriction in inflamed lung regions promotes emphysema progression in smokers susceptible to emphysema. We use CT data from a 1 year longitudinal study to evaluate the pulmonary artery dimensions in rapid and non-progressing emphysema subjects. We show that the enlargement of arteries predicts emphysema progression and can be used to identify subjects showing signs of rapid emphysema progression. We attempt to further our ability to use dual energy computed tomography (DECT) for longitudinal and multi-center studies by developing a DECT perfusion blood volume (PBV) imaging protocol with low radiation dose and diluted contrast. We demonstrate that we can reduce radiation dose by up to 34% with the advanced technology of Siemens SOMATOM Force scanner. Finally, we use DECT PBV imaging to compare perfusion heterogeneity in a multi-center study with both GE and Siemens scanners. We show that perfusion heterogeneity is increased in lung regions showing signs of emphysema, but scanner model/manufacturer appears to be the most important factor as data from the GE scanner had greater noise and thus increased perfusion heterogeneity.
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Livres sur le sujet "Perfusion computed tomography"

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Kenneth, Miles, Eastwood James D et König Matthias, dir. Multidetector computed tomography in cerebrovascular disease : CT perfusion imaging. Abingdon, Oxon : Informa Healthcare, 2007.

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Miles, Kenneth. Multi-Detector Computed Tomography in Oncology : CT Perfusion Imaging. New York : Taylor & Francis Ltd., 2007.

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1958-, Pennell Dudley J., dir. Thallium myocardial perfusion tomography in clinical cardiology. London : Springer-Verlag, 1992.

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Miles, Kenneth, James D. Eastwood et Matthias Konig. Multidetector Computed Tomography in Cerebrovascular Disease : CT Perfusion Imaging. Taylor & Francis Group, 2007.

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Miles, Kenneth, James D. Eastwood et Matthias Konig. Multidetector Computed Tomography in Cerebrovascular Disease : CT Perfusion Imaging. Taylor & Francis Group, 2007.

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(Editor), Kenneth Miles, James D. Eastwood (Editor) et Matthias Konig (Editor), dir. Multidetector Computed Tomography in Cerebrovascular Disease : CT Perfusion Imaging. Informa Healthcare, 2007.

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(Editor), Kenneth Miles, C. Charnsangavej (Editor) et C. Cuenod (Editor), dir. Multi-Detector Computed Tomography in Oncology : CT Perfusion Imaging. Informa Healthcare, 2007.

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Miles, Kenneth, C. Charnsangavej et C. Cuenod. Multi-Detector Computed Tomography in Oncology : CT Perfusion Imaging. Taylor & Francis Group, 2007.

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de Graaf, Michiel A., Arthur JHA Scholte, Lucia Kroft et Jeroen J. Bax. Computed tomography angiography and other applications of computed tomography. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780199687039.003.0022.

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Patients presenting with acute chest pain constitute a common and important diagnostic challenge. This has increased interest in using computed tomography for non-invasive visualization of coronary artery disease in patients presenting with acute chest pain to the emergency department; particularly the subset of patients who are suspected of having an acute coronary syndrome, but without typical electrocardiographic changes and with normal troponin levels at presentation. As a result of rapid developments in coronary computed tomography angiography technology, high diagnostic accuracies for excluding coronary artery disease can be obtained. It has been shown that these patients can be discharged safely. The accuracy for detecting a significant coronary artery stenosis is also high, but the presence of coronary artery atherosclerosis or stenosis does not imply necessarily that the cause of the chest pain is related to coronary artery disease. Moreover, the non-invasive detection of coronary artery disease by computed tomography has been shown to be related with an increased use of subsequent invasive coronary angiography and revascularization, and further studies are needed to define which patients benefit from invasive evaluation following coronary computed tomography angiography. Conversely, the implementation of coronary computed tomography angiography can significantly reduce the length of hospital stay, with a significant cost reduction. Additionally, computed tomography is an excellent modality in patients whose symptoms suggest other causes of acute chest pain such as aortic aneurysm, aortic dissection, or pulmonary embolism. Furthermore, the acquisition of the coronary arteries, thoracic aorta, and pulmonary arteries in a single computed tomography examination is feasible, allowing ‘triple rule-out’ (exclusion of aortic dissection, pulmonary embolism, and coronary artery disease). Finally, other applications, such as the evaluation of coronary artery plaque composition, myocardial function and perfusion, or fractional flow reserve, are currently being developed and may also become valuable in the setting of acute chest pain in the future.
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de Graaf, Michiel A., Arthur JHA Scholte, Lucia Kroft et Jeroen J. Bax. Computed tomography angiography and other applications of computed tomography. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199687039.003.0022_update_001.

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Patients presenting with acute chest pain constitute a common and important diagnostic challenge. This has increased interest in using computed tomography for non-invasive visualization of coronary artery disease in patients presenting with acute chest pain to the emergency department; particularly the subset of patients who are suspected of having an acute coronary syndrome, but without typical electrocardiographic changes and with normal troponin levels at presentation. As a result of rapid developments in coronary computed tomography angiography technology, high diagnostic accuracies for excluding coronary artery disease can be obtained. It has been shown that these patients can be discharged safely. The accuracy for detecting a significant coronary artery stenosis is also high, but the presence of coronary artery atherosclerosis or stenosis does not imply necessarily that the cause of the chest pain is related to coronary artery disease. Moreover, the non-invasive detection of coronary artery disease by computed tomography has been shown to be related with an increased use of subsequent invasive coronary angiography and revascularization, and further studies are needed to define which patients benefit from invasive evaluation following coronary computed tomography angiography. Conversely, the implementation of coronary computed tomography angiography can significantly reduce the length of hospital stay, with a significant cost reduction. Additionally, computed tomography is an excellent modality in patients whose symptoms suggest other causes of acute chest pain such as aortic aneurysm, aortic dissection, or pulmonary embolism. Furthermore, the acquisition of the coronary arteries, thoracic aorta, and pulmonary arteries in a single computed tomography examination is feasible, allowing ‘triple rule-out’ (exclusion of aortic dissection, pulmonary embolism, and coronary artery disease). Finally, other applications, such as the evaluation of coronary artery plaque composition, myocardial function and perfusion, or fractional flow reserve, are currently being developed and may also become valuable in the setting of acute chest pain in the future.
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Chapitres de livres sur le sujet "Perfusion computed tomography"

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So, Aaron. « CT Myocardial Perfusion Imaging ». Dans Computed Tomography, 367–93. Cham : Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-26957-9_20.

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Lee, Ting-Yim, Dae Myoung Yang, Fiona Li et Raanan Marants. « CT Perfusion Techniques and Applications in Stroke and Cancer ». Dans Computed Tomography, 347–65. Cham : Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-26957-9_19.

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Hayball, M. P., K. A. Miles et A. K. Dixon. « X-ray Computed Tomography Perfusion Imaging ». Dans Advances in CT II, 43–50. Berlin, Heidelberg : Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-77463-8_8.

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Hunter, George, Leena M. Hamberg, Michael H. Lev et Ramon Gilberto Gonzales. « Computed Tomography Angiography and Perfusion Imaging of Acute Stroke ». Dans Cerebral Blood Flow, 165–78. Berlin, Heidelberg : Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-642-56036-1_12.

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Ramalho, Joana N., et Isabel R. Fragata. « Computed Tomography (CT) Perfusion : Basic Principles and Clinical Applications ». Dans Vascular Imaging of the Central Nervous System, 255–74. Oxford, UK : John Wiley & Sons, Ltd, 2013. http://dx.doi.org/10.1002/9781118434550.ch17.

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Dewey, Marc, et Marc Kachelrieß. « Myocardial Perfusion Assessment by 3D and 4D Computed Tomography ». Dans Quantification of Biophysical Parameters in Medical Imaging, 487–97. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-65924-4_23.

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Lev, Michael H., George J. Hunter, Leena M. Hamberg et R. Gilberto González. « Computed Tomography Angiography and Perfusion Imaging of Acute Stroke ». Dans Current Review of Cerebrovascular Disease, 93–100. London : Current Medicine Group, 2001. http://dx.doi.org/10.1007/978-1-4684-0001-4_9.

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Yudin, Andrey. « Mosaic Perfusion or Mosaic Lung Sign ». Dans Metaphorical Signs in Computed Tomography of Chest and Abdomen, 19. Cham : Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04013-4_10.

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Yudin, Andrey. « Mosaic Perfusion or Mosaic Lung Sign ». Dans Metaphorical Signs in Computed Tomography of Chest and Abdomen, 23. Cham : Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-24494-0_12.

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Mochizuki, Teruhito, Akira Kurata et Teruhito Kido. « Dynamic, Time-Resolved Imaging of Myocardial Perfusion Using 256-Slice Computed Tomography ». Dans CT Imaging of Myocardial Perfusion and Viability, 125–32. Berlin, Heidelberg : Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/174_2013_912.

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Actes de conférences sur le sujet "Perfusion computed tomography"

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Li, Bin, Qingwen Lyu, Jianhua Ma et Jing Wang. « Direct reconstruction of enhanced signal in computed tomography perfusion ». Dans SPIE Medical Imaging, sous la direction de Despina Kontos, Thomas G. Flohr et Joseph Y. Lo. SPIE, 2016. http://dx.doi.org/10.1117/12.2216998.

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Coppini, G., R. Favilla, B. Barbagli, S. Diciotti, S. Lombardo, M. Schlueter, L. Salvatori, C. Canapini, D. Neglia et P. Marraccini. « Assessment of myocardial perfusion with multi-detector computed tomography ». Dans 2008 35th Annual Computers in Cardiology Conference. IEEE, 2008. http://dx.doi.org/10.1109/cic.2008.4749096.

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Shengyu, Fan, Bian Yueyan et Kang Yan. « Clustering Based Low Dose Cerebral Computed Tomography Perfusion Spatio-temporal Restoration ». Dans ICBBS '20 : 2020 9th International Conference on Bioinformatics and Biomedical Science. New York, NY, USA : ACM, 2020. http://dx.doi.org/10.1145/3431943.3431965.

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Bulwa, Z., H. Dasenbrock, N. Osteraas, L. Cherian, R. Crowley et M. Chen. « E-054 Interpretability of automated computed tomography perfusion for stroke thrombectomy ». Dans SNIS 16TH ANNUAL MEETING. BMA House, Tavistock Square, London, WC1H 9JR : BMJ Publishing Group Ltd., 2019. http://dx.doi.org/10.1136/neurintsurg-2019-snis.129.

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Fang, Ruogu, Ashish Raj, Tsuhan Chen et Pina C. Sanelli. « Radiation dose reduction in computed tomography perfusion using spatial-temporal Bayesian methods ». Dans SPIE Medical Imaging, sous la direction de Norbert J. Pelc, Robert M. Nishikawa et Bruce R. Whiting. SPIE, 2012. http://dx.doi.org/10.1117/12.911563.

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Corsi, G., C. Romei, L. Marconi, F. Falaschi, A. Palla et A. Celi. « Comparison Between Chest Computed Tomography and Perfusion Lung Scan Images in Pulmonary Embolism ». Dans American Thoracic Society 2019 International Conference, May 17-22, 2019 - Dallas, TX. American Thoracic Society, 2019. http://dx.doi.org/10.1164/ajrccm-conference.2019.199.1_meetingabstracts.a2019.

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Bevilacqua, Alessandro, et Margherita Mottola. « Colormaps Of Computed Tomography Liver Perfusion Parameters Achieved Using Different Computing Methods Match ». Dans 2019 IEEE 16th International Symposium on Biomedical Imaging (ISBI). IEEE, 2019. http://dx.doi.org/10.1109/isbi.2019.8759482.

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Li, Sui, Manman Zhu, Danyang Li, Qi Gao, Zhaoying Bian, Dong Zeng et Jianhua Ma. « Task-driven Deep Learning Network for Dynamic Cerebral Perfusion Computed Tomography Protocol Determination ». Dans 2019 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC). IEEE, 2019. http://dx.doi.org/10.1109/nss/mic42101.2019.9060075.

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Haseljić, Hana, Vojtěch Kulvait, Robert Frysch, Fatima Saad, Bennet Hensen, Frank Wacker, Inga Brüsch, Thomas Werncke et Georg Rose. « Time separation technique using prior knowledge for dynamic liver perfusion imaging ». Dans Seventh International Conference on Image Formation in X-Ray Computed Tomography (ICIFXCT 2022), sous la direction de Joseph Webster Stayman. SPIE, 2022. http://dx.doi.org/10.1117/12.2646449.

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Vos, Pieter C., Edwin Bennink, Hugo de Jong, Birgitta K. Velthuis, Max A. Viergever et Jan Willem Dankbaar. « Automated prediction of tissue outcome after acute ischemic stroke in computed tomography perfusion images ». Dans SPIE Medical Imaging, sous la direction de Lubomir M. Hadjiiski et Georgia D. Tourassi. SPIE, 2015. http://dx.doi.org/10.1117/12.2081600.

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Rapports d'organisations sur le sujet "Perfusion computed tomography"

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Hassanzadeh, Sara, Sina Neshat, Afshin Heidari et Masoud Moslehi. Myocardial Perfusion Imaging in the Era of COVID-19. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, avril 2022. http://dx.doi.org/10.37766/inplasy2022.4.0063.

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Résumé :
Review question / Objective: This review studies all aspects of myocardial perfusion imaging with single-photon emission computed tomography (MPI SPECT) after the COVID-19 pandemic. Condition being studied: Many imaging modalities have been reduced after the COVID-19 pandemic. Our focus in this review is to see if the number of MPIs is lowered or not and, if so, why. Furthermore, it is possible that a combination of CT attenuation correction and MPI could yield findings. In this study, we'll also look for these probable findings. Third, we know from previous studies that COVID might cause cardiac injuries in some people. Since MPI is a cardiovascular imaging technique, it might shows those injuries. So we'll review articles to find out in patients with active COVID infection, long COVID, or previous COVID cases what findings in MPI those cardiac injuries can cause.
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