Abstract
Purpose: To evaluate the quality of three-dimensional (3D) CT angiography images of the abdominal viscera with small focal spot, low tube voltage, and iterative model reconstruction technique (IMR). Materials and Methods: Seven patients with suspected disease of the pancreatobiliary system had undergone CT with high-quality CTA protocol in the present study. There were 5 men and 2 women, ranging in age from 52 to 80 years (mean: 64 years). Results: Depiction of abdominal small artery, small portal vein was possible in all cases. In two cases that we were able to compare, it was superior to standard CTA in small vascular depiction in CTA made clearly in high quality protocol. Conclusions: Although the use of small focal spot, low tube voltage, and IMR can produce higher-quality images of abdominal vessels than standard CTA, this improvement is not significant at elevated radiation doses.
Highlights
Medical three-dimensional (3D) angiography imaging can be conducted using a variety of techniques, including computed tomography (CT), magnetic resonance imaging (MRI), ultrasonography (US)
Abdominal CTA using a large field of view (FOV) provides inferior resolution compared to intra-arterial digital subtraction angiography (DSA)
Depiction of abdominal small artery, small portal vein was possible in all cases (Figures 1-3)
Summary
Medical three-dimensional (3D) angiography imaging can be conducted using a variety of techniques, including computed tomography (CT), magnetic resonance imaging (MRI), ultrasonography (US). (2015) High-Quality Three-Dimensional Computed Tomography Angiography of Abdominal Viscera with Small Focal Spot, Low Tube Voltage, and Iterative Model Reconstruction Technique. Abdominal CTA using a large field of view (FOV) provides inferior resolution compared to intra-arterial digital subtraction angiography (DSA). Sub-millimeter branches are relatively difficult to visualize on CTA due to their small diameter. This might be due to both mall veins and small arteries being difficult to depict by CTA, which hampers the definitive identification of small vessels [1]. We discuss recent advances in CTA imaging techniques and 3D visualization of the abdomen, including scanning and image-reconstruction techniques
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