Results 21 to 30 of about 5,652,430 (282)

On artefact reduction, segmentation and classification of 3D computed tomography imagery in baggage security screening [PDF]

, 2014
This work considers novel image-processing and computer-vision techniques to advance the automated analysis of low-resolution, complex 3D volumetric Computed Tomography (CT) imagery obtained in the aviation-security-screening domain. Novel research is
Mouton, Andre
core   +7 more sources

Image quality and radiation dose assessment for the clinically applied 16-slice CT scanner using PMMA phantom and quality assurance phantom

The Egyptian Journal of Radiology and Nuclear Medicine, 2023
The goal of this study was to assess the radiation dose delivered accuracy and the acceptable image quality parameter from the 16-slice Philips CT scanner in order to evaluate the current methodology for quality controls of computed tomography systems ...
Tadelech Sisay Mekonin, Tilahun Tesfaye Deressu   +1 more
doaj   +1 more source

Development of In-House Head Computed Tomography Dose Index Phantoms Based on Polyester-Resin Materials [PDF]

Iranian Journal of Medical Physics, 2021
Introduction: Computed tomography dose index (CTDI) phantoms are used to optimize CT examinations in terms of image quality and the received dose. In this study, we aimed to develop cost-effective head CTDI phantoms from polyester-resin (PESR) materials ...
Rin Asiah, Heri Sutanto, Choirul Anam, Zaenal Arifin, Bahrudin Bahrudin, Rumaisya Hilmawati   +5 more
doaj   +1 more source

Systematic review of the clinical effectiveness and cost-effectiveness of 64-slice or higher computed tomography angiography as an alternative to invasive coronary angiography in the investigation of coronary artery disease [PDF]

, 2008
Objectives: To assess the clinical effectiveness and cost-effectiveness, in different patient groups, of the use of 64-slice or higher computed tomography (CT) angiography, instead of invasive coronary angiography (CA), for diagnosing people with ...
Cummins, E., Fraser, Cynthia Mary, N Waugh, Cook, J., Cook, Jonathan Alistair, Fraser, C., S Walker, Cummins, E. (Ewen), E Cummins, Mowatt, G., Walker, S., Jia, Xueli, Waugh, Norman, C Fraser, G Mowatt, G Hillis, J Cook, Jian, X., Hillis, Graham S., X Jia, Waugh, N., Mowatt, Graham   +21 more
core   +3 more sources

Diagnostic reference levels for head and abdominal computed tomography of adult patients in selected states in South-South Nigeria

Journal of Radiation and Cancer Research, 2021
Context: Diagnostic reference level (DRL) is the first step in the optimization process to manage patient dose corresponding with the medical purpose. Aim: The objective of this study was to develop local DRL for computed tomography (CT) of the head and ...
Anwuli Christiana Tobi, Chukwuka Emmanuel Mokobia, Joyce Ekeme Ikubor, Akintayo Daniel Omojola, Maryann Etim Ekpo, Anita Franklin Akpolile   +5 more
doaj   +1 more source

Patient doses in computed tomography: An assessment of local diagnostic reference levels in a large teaching hospital [PDF]

Nuclear Technology and Radiation Protection, 2012
This paper presents an estimation of local diagnostic reference levels in computed tomography in a large teaching hospital. Local diagnostic reference levels, expressed in terms of volume weighted computed tomography dose index and dose-length product,
Hadnađev Darka R., Aranđić Danijela D., Stojanović Sanja S., Ciraj-Bjelac Olivera F., Božović Predrag M., Stanković Jelena S.   +5 more
doaj   +1 more source

Variation in Pediatric Cervical Spine Computed Tomography Radiation Dose Index [PDF]

Academic Emergency Medicine, 2015
AbstractObjectivesThe objective was to evaluate variation in the current estimated radiation dose index for pediatric cervical spine (c‐spine) computed tomography (CT) examinations.MethodsThis was a retrospective analysis of pediatric (age younger than 19 years) c‐spine CT examinations from the American College of Radiology Dose Index Registry, July ...
Jennifer R, Marin, Debapriya, Sengupta, Mythreyi, Bhargavan-Chatfield, Kalpana M, Kanal, Angela M, Mills, Kimberly E, Applegate   +5 more
openaire   +2 more sources

Muscle and bone adaptations after treadmill training in incomplete spinal cord injury : a case study using peripheral quantitative computed tomography [PDF]

, 2009
We describe the use of peripheral Quantitative Computed Tomography (pQCT) to identify musculoskeletal responses to partial body-weight supported treadmill training (BWSTT) in incomplete spinal cord injury (SCI).
Hunt, Kenneth, Coupaud, Sylvie, Allan, David, Jack, Lindsay, McLean, Alan   +4 more
core   +3 more sources

Computed tomography-osteoaboorptiometry [PDF]

, 1990
A method of making a visual display of subchondral mineralization in the major synovial joints is described. Unlike existing procedures, it can be used on the living subject. A modified application of computed tomography-densitometry, computed tomography-
Müller-Gerbl, Magdalena, Wimmer, Berthold, Hodapp, Norbert, Putz, Reinhard, Schulte, Erik   +4 more
core   +1 more source

An experimental survey of metal artefact reduction in computed tomography [PDF]

, 2013
We present a survey of techniques for the reduction of streaking artefacts caused by metallic objects in X-ray Computed Tomography (CT) images. A comprehensive review of the existing state-of- the-art Metal Artefact Reduction (MAR) techniques, drawn ...
Van Slambrouck, Katrien, Nuyts, Johan, Breckon, Toby P., Van Slambrouck, K., Breckon, T.P., Megherbi, N., Megherbi Bouallagui, Najla, Mouton, Andre, Nuyts, J., Mouton, A.   +9 more
core   +1 more source