Results 41 to 50 of about 40,317 (298)
Influence of Pitch on Surface Dose Distribution and Image Noise of Computed Tomography Scans
Sensors, 2023 This study evaluated the effect of pitch on 256-slice helical computed tomography (CT) scans. Cylindrical water phantoms (CWP) were measured using axial and helical scans with various pitch values. The surface dose distributions of CWP were measured, and
Kenji Yamada +8 more
doaj +1 more source
Network Localization of Fatigue in Multiple Sclerosis
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Background Fatigue is among the most common symptoms and one of the main factors determining the quality of life in multiple sclerosis (MS). However, the neurobiological mechanisms underlying fatigue are not fully understood. Here we studied lesion locations and their connections in individuals with MS, aiming to identify brain networks ...
Olli Likitalo +12 more
wiley +1 more source
Journal of the Dow University of Health Sciences, 2018 Objective: To determine diagnostic accuracy of quadruple phase helical computed tomography scan in detection of hepatocellular carcinoma in individuals with hepatitis B and C, keeping histopathology as the gold standard.
Saadia Sarwar Soomro +5 more
doaj +2 more sources
Cancer of the Pancreas: The Best Image for Early Detection – CT, MRI, PET or US?
Canadian Journal of Gastroenterology, 2002 Pancreatic cancer has a poor prognosis, and the best chance for survival is to diagnose the tumour at an early stage. Abdominal ultrasound, computed tomography, magnetic resonance imaging and endoscopic retrograde cholangiopancreatography are the most ...
Anthony E Hanbidge
doaj +1 more source
Relaxed Linearized Algorithms for Faster X-Ray CT Image Reconstruction [PDF]
, 2015 Statistical image reconstruction (SIR) methods are studied extensively for X-ray computed tomography (CT) due to the potential of acquiring CT scans with reduced X-ray dose while maintaining image quality.
Fessler, Jeffrey A., Nien, Hung
core +1 more source
Functional Connectivity Linked to Cognitive Recovery After Minor Stroke
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Patients with minor stroke exhibit slowed processing speed and generalized alterations in functional connectivity involving frontoparietal cortex (FPC). The pattern of connectivity evolves over time. In this study, we examine the relationship of functional connectivity patterns to cognitive performance, to determine ...
Vrishab Commuri +7 more
wiley +1 more source
Real time evaluation of overranging in helical computed tomography [PDF]
Physica Medica, 2014 5 figures, 3 ...
Trevisan, Diego +3 more
openaire +3 more sources
Value of MRI Outcomes for Preventive and Early‐Stage Trials in Spinocerebellar Ataxias 1 and 3
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective To examine the value of MRI outcomes as endpoints for preventive and early‐stage trials of two polyglutamine spinocerebellar ataxias (SCAs). Methods A cohort of 100 participants (23 SCA1, 63 SCA3, median Scale for the Assessment and Rating of Ataxia (SARA) score = 5, 42% preataxic, and 14 gene‐negative controls) was scanned at 3T up ...
Thiago J. R. Rezende +26 more
wiley +1 more source
Helical Multidetector Row Quantitative Computed Tomography (QCT) Precision
Academic Radiology, 2009 The impact of varying image acquisition parameters on the precision of measurements using quantitative computed tomography is currently based on studies performed before the advent of helical image acquisition and multidetector-row scanners. The aim of this study was to evaluate helical multidetector-row quantitative computed tomography to determine ...
Michael Bligh +5 more
openaire +3 more sources
, 2016 Markov random fields (MRFs) have been widely used as prior models in various inverse problems such as tomographic reconstruction. While MRFs provide a simple and often effective way to model the spatial dependencies in images, they suffer from the fact ...
Bouman, Charles A. +5 more
core +1 more source