Multislice CT virtual endoscopy in pre-aortic stent grafting: optimization of scanning protocols.
MetadataShow full item record
The purpose of this study was to investigate the optimal scanning protocols of multislice CT (MSCT) angiography in pre-aortic stent grafting, visualized on virtual endoscopy (VE). A series of scans were performed on a human aorta phantom with a 16-slice multislice CT scanner with the scanning protocols as follows: section thickness of1.0/1.5/2.0/3.0 mm, pitch value of 1.0/1.25/1.5, and reconstruction interval of 50% overlap. Signal to noise ratio and standard deviation (SD) of the signal intensity on VE images were measured to determine the image quality in relation to MSCT scanning protocols. Subjective assessment was performed by two observers evaluating the degree ofartefacts and the configuration of the renal ostium visualized on VE images. Our results showed that the scanning protocol with a section thickness of 2.0 mm resulted in the highest SNR and lowest SD compared to other protocols (p<0.05).Subjective assessment demonstrated that VE image quality was determined by section thickness, but independent of pitch values. We recommended the scanning protocol of section thickness 2.0 mm, pitch 1.5 with a reconstruction interval of 1.0 mm as the optimal one since it allows optimal visualization of VE images of aortic ostia, fewer artefacts and less radiation dose.
This paper is to be presented at the above conference.
Showing items related by title, author, creator and subject.
Optimal Scanning protocol of multislice CT virtual intravascular endoscopy in pre-aortic stent grafting: in vitro phantom studySun, Zhonghua; Ferris, C. (2006)Objective: To investigate the optimal scanning protocol for multislice computed tomography angiography (MSCT) in pre-aortic stent grafting observed with virtual intravascular endoscopy (VIE).Materials and Methods: The ...
Multislice CT angiography in post-aortic stent grafting: optimization of scanning protocols for virtual intravascular endoscopySun, Zhonghua (2008)Objective: The aim of this study is to investigate the optimal 64-slice CT scanning protocols of 3D virtual intravascular endoscopy (VIE) visualization in abdominal aortic aneurysm treated with suprarenal stent grafts, ...
Optimal scanning protocols of 64-slice CT angiography in coronary artery stents: An in vitro phantom studyAlmutairi, A.; Sun, Zhonghua; Ng, Curtise; Al-Safranb, Z.; Al-Mullab, A.; Al-Jamaanb, A. (2009)Purpose: The purpose of the studywas to investigate the optimal scanning protocol of 64-slice CT angiographyfor assessment of coronary artery stents based on a phantom study.Materials and methods: Coronary stents with a ...