Spiral CT virtual endoscopy of abdominal arteries: clinical applications

Neri, Emanuele; Bonanomi, Gianluca; Vignali, C; Cioni, Roberto; Ferrari, Mauro; Petruzzi, P; Bartolozzi, Carlo

doi:10.1007/s002619910012

Cited by 18 publications

(19 citation statements)

References 9 publications

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“…Generally, the proper concentration of the contrast agent in the blood vessel is crucial and required for CTVE [23]. In our study, we used a contrast agent (Omnipaque 300 mg/ml) with rate of 3 ml/s and a dose of 120 ml and achieved good results.…”

Section: Discussionmentioning

confidence: 88%

“…CTVE can simulate real vascular endoscopy to observe intravascular structure [23]. Because CTVE technology can clearly show the internal opening of the lumen at the PV bifurcation, we could distinguish the subtle differences between a short common trunk and trifurcation from the intravascular lumen, which other post-processing technologies cannot do.…”

Section: Discussionmentioning

confidence: 98%

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CT virtual endoscopy for analyzing variations in the hepatic portal vein

et al. 2015

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Section: Discussionmentioning

confidence: 88%

Section: Discussionmentioning

confidence: 98%

CT virtual endoscopy for analyzing variations in the hepatic portal vein

et al. 2015

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“…Operation with 16-and 64-slice CT and gantry rotation time of 0.5 or 0.33 s reduce scanning time and result in acquisition of isotropic volume data. CT VIE is currently being assessed as an additional 3D image method to conventional imaging techniques for postoperative follow-up of aortic stent grafts [8,10]. No clear consensus exists, however, on issues regarding MSCT VIE acquisition parameters.…”

Section: Discussionmentioning

confidence: 98%

“…The role of CTA has been greatly enhanced by the introduction of multislice CT (MSCT) due to its fast scanning, high spatial and temporal resolution and acquisition of nearly isotropic volume data [7]. CTA-generated virtual intravascular endoscopy (VIE) is a rapidly evolving technology that permits interactive 3D visualizations not only for aortic branches but also for intraluminal stents [8][9][10]. VIE has been reported to provide additional information when compared to conventional 2D and 3D visualizations in earlier studies [8,9], and it was considered to be a valuable visualization tool that assists vascular surgeons to accurately evaluate the treatment outcomes of endovascular repair.…”

Section: Introductionmentioning

confidence: 99%

Multislice CT angiography in post-aortic stent grafting: optimization of scanning protocols for virtual intravascular endoscopy

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2008

Int J CARS

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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, based on an in vitro phantom study. Materials and methodsThe study was performed on a human aorta phantom with a commercially available stent graft in situ. The contrast medium was diluted to produce CT attenuation similar to that used in routine abdominal aortic CT angiography. A series of scans was performed on a 64-slice CT scanner with the scanning protocols being section thickness of 0.5, 1.0, 2.0, 3.0 and 5.0 mm, pitch of 0.9, 1.2 and 1.4 with reconstruction interval of 50% overlap. Quantitative assessment of image quality was performed by measuring the standard deviation (SD) on surfaced rendered VIE images at three anatomic locations, superior mesenteric artery, right renal artery and aortic aneurysm. This aims to determine the degree of stair-step artifacts present on VIE images using a line profile. The thickness of suprarenal stent wires was measured corresponding with each scanning protocol at above same three locations. Subjective assessment of image quality was focused to evaluate the configuration of aortic ostium visualized on VIE images. Results Our results showed that the SD was independent of section thickness and pitch value, although thinner section thickness of 0.5 and 1.0 mm produced better image quality with fewer artifacts. The aortic ostium became irregular or distorted when the section thickness increased to 3.0 and Z. Sun (B) 5.0 mm. Radiation dose was inversely proportional to the pitch values. Conclusion We recommend a scanning protocol of 1.0 mm and pitch 1.4 with reconstruction interval of 0.5 mm as the optimal one of VIE in post-aortic stent grafting as it allows for generation of acceptable images, with fewer artifacts and less radiation dose.

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“…Furthermore, one of the most effective ways to visualise arteries is by means of virtual angioscopy, a technique that is quite easily achievable with modern workstations connected to the MSCT or MRA unit. With this technique, endoluminal and vessel fly-through views can be created by using the data sets obtained by MSCT and MR scans [1][2][3][4][5]. As stated by Carrascosa et al [3] "…virtual angioscopy provides a comprehensive delineation of the lumen and allows understanding the effect of disease on it".…”

Section: Introductionmentioning

confidence: 99%