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Effect on threshold of triggered angiographic acquisition of renal artery CTA by different iodine flow rate / 中国医学影像技术
Article in Chinese | WPRIM | ID: wpr-616676
Responsible library: WPRO
ABSTRACT
Objective To evaluate the effect on threshold of triggered angiographic acquisition by different iodine flow rate on renal artery CTA using Smart Prep tracking technique.Methods A total of 420 patients were randomly divided into A-D group with iodine flow rate of 0.90 gI/s,1.11 gI/s,1.20 gI/s,1.48 gI/s on average respectively.And each group were divided 7 subgroups with threshold 140-<150 HU,150-< 160 HU,160-< 170 HU,170 <180 HU,180 <190 HU,190-<200 HU,200-210 HU respectively.The quality of the images were graded from 1 5 by 2 radiologists.The best image quality subgroups were achieved,and the scores were compared among the best image quality subgroups.Results Image quality of renal CTA in each group were best performed with a threshold of 170-< 190 HU,160-< 190 HU,170-< 180 HU,160-< 180 HU respectively.When the threshold were 170-<180 HU,image quality were good with all iodine flow rate groups.There was no significant difference among the scores of the best image quality subgroups (all P>0.05).Conclusion Different iodine flow rate with appropriate threshold can acquire better image quality of renal CTA.

Full text: Available Index: WPRIM (Western Pacific) Language: Chinese Journal: Chinese Journal of Medical Imaging Technology Year: 2017 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Language: Chinese Journal: Chinese Journal of Medical Imaging Technology Year: 2017 Type: Article