Tradeoff between noise reduction and inartificial visualization in a model-based iterative reconstruction algorithm on coronary computed tomography angiography

Medicine
Kenichiro HirataYasuyuki Yamashita

Abstract

We aimed to evaluate the image quality performance of coronary CT angiography (CTA) under the different settings of forward-projected model-based iterative reconstruction solutions (FIRST).Thirty patients undergoing coronary CTA were included. Each image was reconstructed using filtered back projection (FBP), adaptive iterative dose reduction 3D (AIDR-3D), and 2 model-based iterative reconstructions including FIRST-body and FIRST-cardiac sharp (CS). CT number and noise were measured in the coronary vessels and plaque. Subjective image-quality scores were obtained for noise and structure visibility.In the objective image analysis, FIRST-body produced the significantly highest contrast-to-noise ratio. Regarding subjective image quality, FIRST-CS had the highest score for structure visibility, although the image noise score was inferior to that of FIRST-body.In conclusion, FIRST provides significant improvements in objective and subjective image quality compared with FBP and AIDR-3D. FIRST-body effectively reduces image noise, but the structure visibility with FIRST-CS was superior to FIRST-body.

References

Jun 27, 2009·Journal of the American College of Cardiology·Sadako MotoyamaJagat Narula
Apr 25, 2012·AJR. American Journal of Roentgenology·Seitaro OdaYasuyuki Yamashita
Jun 1, 2013·Journal of Medical Imaging and Radiation Oncology·Odgerel TumurMarcus Mykytowycz
Mar 26, 2014·Journal of Cardiovascular Computed Tomography·Hideaki YukiYasuyuki Yamashita
Mar 11, 2015·Circulation Journal : Official Journal of the Japanese Circulation Society·Akira Sato, Kazutaka Aonuma
Jun 1, 2016·Journal of Medical Imaging and Radiation Oncology·Kamarul Amin AbdullahPeter L Kench
Sep 30, 2016·Journal of Applied Clinical Medical Physics·Guang LiX John Rong
Jun 7, 2017·Physica Medica : PM : an International Journal Devoted to the Applications of Physics to Medicine and Biology : Official Journal of the Italian Association of Biomedical Physics (AIFB)·Nicoletta ParucciniAndrea Crespi

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Citations

Dec 11, 2019·Academic Radiology·Toru HigakiKazuo Awai

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Software Mentioned

AIDR
MedCalc
FIRST
3D
CS

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