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Visualization of small visceral arteries on abdominal CT angiography using ultra-high-resolution CT scanner
Kazuya Ogawa1, Hiromitsu Onishi2, Masatoshi Hori1
1Department of Diagnostic and Interventional Radiology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
Insights
High-resolution (HR) abdominal CT angiography (CTA) using an ultra-high-resolution (UHR) CT scanner significantly improves image quality and visceral artery delineation compared to normal-resolution CTA.
Area of Science:
- Radiology
- Medical Imaging
- Cardiovascular Imaging
Background:
- Abdominal CT angiography (CTA) is crucial for visualizing visceral arteries.
- Improving the delineation of small visceral arteries remains a challenge in abdominal CTA.
- Ultra-high-resolution (UHR) CT technology offers potential for enhanced image acquisition.
Purpose of the Study:
- To assess the image quality of high-resolution (HR) abdominal CTA.
- To evaluate the capability of HR abdominal CTA in delineating small visceral arteries.
- To compare HR CTA with normal-resolution (NR) CTA using a UHR CT scanner.
Main Methods:
- Thirty-seven patients underwent abdominal CTA on a UHR CT scanner.
- Images were reconstructed for HR CTA (1024x1024 matrix, 0.25 mm slice thickness) and NR CTA (512x512 matrix, 0.5 mm slice thickness).
- Maximum CT value, image quality, and small artery delineation were quantitatively and qualitatively compared.
Main Results:
- HR CTA demonstrated a significantly higher maximum CT value compared to NR CTA (P < .005).
- Image quality was significantly superior in HR CTA versus NR CTA.
- Delineation of small visceral arteries was significantly better with HR CTA than with NR CTA.
Conclusions:
- HR abdominal CTA acquired with a UHR CT scanner yields superior image quality.
- HR CTA significantly enhances the delineation of small visceral arteries compared to NR CTA.
- UHR CT technology represents a valuable advancement for abdominal CTA imaging.
Purpose:
To evaluate the image quality and ability to delineate the small visceral arteries of high-resolution (HR) abdominal CT angiography (CTA) using an ultra-high-resolution computed tomography (UHR CT) scanner.
Materials And Methods:
Thirty-seven patients were enrolled who underwent abdominal CTA using a UHR CT scanner. The images were reconstructed with a matrix of 1024 × 1024 and 0.25 mm thickness for HR CTA and with a matrix of 512 × 512 and 0.5 mm thickness for normal resolution (NR) CTA. Maximum CT value, image quality, and delineation of the small arteries were compared between HR CTA and NR CTA.
Results:
HR CTA showed significantly higher maximum CT value, higher image quality, and better delineation of the small arteries than did NR CTA (P < .005).
Conclusion:
HR CTA using a UHR CT scanner showed higher image quality than NR CTA and enhanced the delineation of visceral arteries.
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