Multidetector CT Angiography of Arterial Inflow and Runoff in the Lower Extremities:A Challenge in Data Acquisition and Evaluation

Abstract

High-resolution CTA lower extremity datasets were acquired successfully, presenting vascular signal intensities of high homogeneity suitable for automated vessel-tracking techniques. Automated 3D visualization tools produced reliable, reproducible, and time-efficient centerline extractions that were comparable to manually defined centerlines.

Assessment of Intracranial Arterial Stenosis with Multidetector Row CT Angiography: A Postprocessing Techniques Comparison

“…In particular, the ongoing development of MDCTA technology has transformed CT into a 3D imaging technique with outstanding temporal and spatial resolution and the capacity for visualization of even millimeter-sized vessels such as the Adamkiewicz artery. 5,6 By using MDCT, it is possible to employ different postprocessing techniques in addition to source axial images. MIP, MPR, CPR, and VR 7,8 are currently the most frequently used.…”

Preliminary examination to determine the suitable contrast material injection protocol for CT angiography of the pelvis and lower extremities with a multidetector row helical scanner

“…23,24 Boll et al noted that a high-resolution CTA lower extremity data set was acquired with injection of 130 ml of 300 mg I/ml at 3.5 ml/ s and a delay time of 35 s by means of a 16-channel MDCT scanner. 10 The parameters they used were similar to those in our study.…”

“…MDCT with more than 16 channels is now available, offering shorter acquisition times and larger imaging fields. 10 Data concerning the optimal volume and concentration of iodinated contrast material for four-channel MDCT will be useful for MDCT with 16 or more channels.…”

3D CTA reconstructions comparison in two different workstations: GE vs. Viatronix

“…1A) [1]. Then slice datasets were sent to a GE Advantage Windows 4.2 and a Viatronix V3D Vascular System for vessel analysis, 3D volume rendering, oblique MPR reconstructions and 3D endoluminal view [1].Results. For stenotic lesions of medium and small vessels (Fig.…”

“…A total of 30 patients underwent to CTA for a peripheral vessels study with a bolus triggering technique (Fig. 1A) [1]. Then slice datasets were sent to a GE Advantage Windows 4.2 and a Viatronix V3D Vascular System for vessel analysis, 3D volume rendering, oblique MPR reconstructions and 3D endoluminal view [1].…”