Browsing Faculté de médecine by Affiliation "Université de Montréal. Faculté de médecine. Département de radiologie, radio-oncologie et médecine nucléaire"
Now showing items 21-40 of 45
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LI-RADS version 2018 ancillary features at MRI
LI-RADS version 2017 ancillary features on MR imaging
(Radiological Society of North America, 2018-10-05)The Liver Imaging Reporting and Data System (LI-RADS) standardizes performance of liver imaging in patients at risk for hepatocellular carcinoma (HCC) as well as interpretation and reporting of the results. Developed by experts in liver imaging and ... -
LI-RADS® ancillary features on CT and MRI
LI-RADS version 2018 ancillary features at MRI
(Springer, 2017-06-24)The Liver Imaging Reporting and Data System (LI-RADS) stan- dardizes performance of liver imaging in patients at risk for hepa- tocellular carcinoma (HCC) as well as interpretation and reporting of the results. Developed by experts in liver imaging ... -
Live minimal path for interactive segmentation of medical images
(Society of photo-optical instrumentation engineers, 2015-03-20)Medical image segmentation is nowadays required for medical device development and in a growing number of clinical and research applications. Since dedicated automatic segmentation methods are not always available, generic and efficient interactive ... -
Liver imaging : it is time to adopt standardized terminology
(Springer, 2022-04-07)Liver imaging plays a vital role in the management of patients at risk for hepatocellular carcinoma (HCC); however, progress in the field is challenged by nonuniform and inconsistent terminology in the published literature. The Steering Committee of ... -
Liver Imaging Reporting and Data System : review of ancillary imaging features
(Elsevier, 2016-10-13)The American College of Radiology supported Liver Imaging Reporting And Data System (LI-RADS) is a comprehensive system for standardized interpretation and reporting of imaging examinations performed in patients at risk for hepatocellular carcinoma ... -
Liver imaging reporting and data system : review of major imaging features
(Elsevier, 2016-10-13)The purpose of this article is to review and illustrate the Liver Imaging Reporting and Data System (LI-RADS) major features for interpretation and reporting of liver imaging examinations performed in patients at risk for hepatocellular carcinoma (HCC). -
Liver segmentation on CT and MR using laplacian mesh optimization
(Institute of electrical and electronics engineers, 2016-11-18)Objective: The purpose of this paper is to describe a semiautomated segmentation method for the liver and evaluate its performance on CT-scan and MR images. Methods: First, an approximate 3-D model of the liver is initialized from a few user-generated ... -
Machine learning based on quantitative ultrasound for assessment of chronic liver disease
(Institute of electrical and electronics engineers, 2020-11-17)Chronic liver disease (CLD) is a highly prevalent condition characterized by the coexistence of histopathological changes, including liver steatosis, inflammation and fibrosis. Based on a multi-parametric approach, the goal was to assess the ancillary ... -
Metastatic liver tumour segmentation with a neural network-guided 3D deformable model
(Springer, 2016-04-22)The segmentation of liver tumours in CT images is useful for the diagnosis and treatment of liver cancer. Furthermore, an accurate assessment of tumour volume aids in the diagnosis and evaluation of treatment response. Currently, segmentation is performed ... -
MRI-based R2* mapping in patients with suspected or known iron overload
(Springer, 2021-01-02)Purpose R2* relaxometry is a quantitative method for assessment of iron overload. The purpose is to analyze the cross-sectional relationships between R2* in organs across patients with primary and secondary iron overload. Secondary analyses were ... -
A multicenter assessment of interreader reliability of LI-RADS version 2018 for MRI and CT
(Radiological Society of North America, 2023-06-27)Background: Various limitations have impacted research evaluating reader agreement for Liver Imaging-Reporting and Data System (LI-RADS). Purpose: To assess reader agreement of LI-RADS in an international multi-center, multireader setting using ... -
Navigation of microrobots by MRI : impact of gravitational, friction and thrust forces on steering success
(Springer, 2021-10-07)Introduction Magnetic resonance navigation (MRN) uses MRI gradients to steer magnetic drug-eluting beads (MDEBs) across vascular bifurcations. We aim to experimentally verify our theoretical forces balance model (gravitational, thrust, friction, buoyant ... -
Noninvasive quantitation of human liver steatosis using magnetic resonance and bioassay methods
(Elsevier, 2009-03-11)The purpose was to evaluate the ability of three magnetic resonance (MR) techniques to detect liver steatosis and to determine which noninvasive technique (MR, bioassays) or combination of techniques is optimal for the quantification of hepatic fat ... -
Prediction of CD3 T-cell infiltration status in colorectal liver metastases : a radiomics-based imaging biomarker
(Society of photo-optical instrumentation engineers, 2022-04-04)Colorectal cancer (CRC) continues to be a leading cause of cancer-related death in the developed world due to metastatic progression of the disease. In an effort to improve the understanding of tumor biology and developing prognostic tools, it was ... -
Quantification and 3D localization of magnetically navigated superparamagnetic particles using MRI in phantom and swine chemoembolization models
(Institute of electrical and electronics engineers, 2022-02-15)Objective: Superparamagnetic nanoparticles (SPIONs) can be combined with tumor chemoembolization agents to form magnetic drug-eluting beads (MDEBs), which are navigated magnetically in the MRI scanner through the vascular system. We aim to develop a ... -
Quantitative MRI in patients with gluteal tendinopathy and asymptomatic volunteers : initial results on T1- and T2*-mapping diagnostic accuracy and correlation with clinical assessment
(Springer, 2021-04-29)Objective To determine if T1- and T2*-mapping of the gluteal tendons can discriminate between participants with and without clinical findings of gluteal tendinopathy (GT) and if they correlate with clinical assessment. Materials and methods This ... -
Regularized ultrasound phantom-free local Attenuation Coefficient Slope (ACS) imaging in homogeneous and heterogeneous tissues
(Institute of electrical and electronics engineers, 2022-11-01)Attenuation map or measurements based on local attenuation coefficient slope (ACS) in quantitative ultrasound (QUS) has shown potential for diagnosis of liver steatosis. In liver cancers, tissue abnormalities and tumors detected using ACS are also ... -
Renal dysfunction independently predicts muscle mass loss in patients following liver transplantation
(University of Toronto Press, 2022-05-02)Liver transplantation (LT) is the only curative treatment for cirrhosis. However, the presence of complications can impact outcomes following LT. Sarcopenia, or muscle mass loss, is highly prevalent in patients with cirrhosis and is associated with ... -
Reproducibility of abdominal aortic aneurysm diameter measurement and growth evaluation on axial and multiplanar computed tomography reformations
(Springer, 2011-08-24)Purpose: Compare different methods measuring abdominal aortic aneurysm (AAA) maximal diameter (Dmax) and its progression on multi-detector computed tomography scan (MDCT). Materials and Methods: Forty AAA patients with 2 MDCT acquired at different ... -
The revisited frequency-shift method for shear wave attenuation computation and imaging
(2022-04-11)Ultrasound (US) shear wave (SW) elastography has been widely studied and implemented on clinical systems to assess the elasticity of living organs. Imaging of SW attenuation reflecting viscous properties of tissues has received less attention. A revisited ...
