Effects of reconstruction technique on the quality of abdominal CT angiography: A comparison between forward projected model-based iterative reconstruction solution (FIRST) and conventional reconstruction methods

European Journal of Radiology
Rongli WuNoriyuki Tomiyama

Abstract

This study aimed to compare the quality of abdominal CT angiography (CTA) images obtained using conventional reconstruction algorithms with those obtained using a novel iterative algorithm (forward projected model-based iterative reconstruction solution, FIRST) for evaluating arteries in the abdomen. Abdominal CTA images from 60 patients (M:F = 27:33; mean age, 62.4 ± 16.7 years) were reconstructed using three algorithms - filtered back projection (FBP), adaptive iterative dose reduction 3D (AIDR 3D), and FIRST. Image noise, signal-to-noise ratio (SNR), and contrast-to-noise ratio (CNR) in the abdominal aorta, celiac trunk, superior mesenteric, renal, and right hepatic arteries were objectively evaluated via region-of-interest analysis and compared using the one-way analysis of variance test. Two radiologists independently scored and selected the best (score 3), second best (score 2), and the worst (score 1) images based on the visual image quality of peripheral arteries. Wilcoxon signed rank test was used for comparing image quality scores. FIRST and AIDR 3D significantly reduced image noise compared with FBP (P < 0.001). SNR and CNR were significantly higher with AIDR 3D and FIRST than with FBP reconstruction (P < 0.001), wit...Continue Reading

Citations

May 2, 2019·Japanese Journal of Radiology·Toshihiko HamamuraYukunori Korogi
Sep 17, 2020·Journal of Computer Assisted Tomography·Kristin JensenAnne Catrine Martinsen
Mar 18, 2021·Physics in Medicine and Biology·Hao ZhangLei Xing
May 6, 2021·Japanese Journal of Radiology·Kazuya OgawaNoriyuki Tomiyama
May 15, 2021·The British Journal of Radiology·Jarrel SeahMeng Law
Jun 29, 2021·Journal of Computer Assisted Tomography·Hirofumi SekinoHiroshi Ito

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