value of sinogram-affirmed iterative reconstruction for evaluating coronary calcified plaques

نویسندگان

xianchun zeng department of radiology, guizhou provincial people’s hospital, guiyang, china; department of ct, the first affiliated hospital of kunming medical university, kunming, china

shaolei kang department of ct, the first affiliated hospital of kunming medical university, kunming, china

rongpin wang department of radiology, guizhou provincial people’s hospital, guiyang, china

dan han department of ct, the first affiliated hospital of kunming medical university, kunming, china; department of ct, the first affiliated hospital of kunming medical university, kunming, p. o. box: 650032, china. tel: +86-87165324888, fax: +86-87165324888

چکیده

conclusion safire reconstruction provided better coronary image quality and displayed the number, morphology, and surrounding lumen of calcium plaques more accurately than traditional fbp reconstruction, with safire3 achieving the best results. results the subjective ratings of image quality using safire1–safire5 reconstructions were significantly higher than those using fbp, with safire3 achieving the highest rating. compared with fbp reconstruction, the differences in noise, snr, and cnr using safire1-safire5 were statistically significant (p < 0.05), with safire5 reconstruction achieving the highest snr and cnr, and fbp reconstruction achieving the lowest. the revealed numbers of calcium plaques in the safire1-safire5 reconstruction groups were higher than that in the fbp reconstruction without significant differences in the number of calcium plaques among the safire1–safire5 groups (p > 0.05). objectives this study determined the value of sinogram-affirmed iterative reconstruction (safire) technology to assess coronary-calcified plaques. this value was compared with filtered back-projection (fbp) reconstruction. patients and methods sixty-three cases with calcified plaques diagnosed via coronary ct examination were selected. the mean ct-number, noise, signal-to-noise ratio (snr), contrast-to-noise ratio (cnr), number of calcium plaques, edges, lumen situation, and the subjective image quality ratings of the cases using fbp and safire1–safire5 (six groups) were analyzed and compared. background coronary computed tomography angiography (ccta) technology as a kind of non-traumatic examination has been widely used in clinical practice. there are major issues that need to be considered. one is how to obtain high quality images and at the same time effectively reduce the radiation dose. the second is coronary artery calcified plaque artifacts that seriously affect the depiction of plaque morphology and luminal stenosis. in case of dose reduction, these artifacts are more outstanding.

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عنوان ژورنال:
iranian journal of radiology

جلد ۱۴، شماره ۱، صفحات ۰-۰

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