3.0T磁共振single shot PSIR與segmented PSIR序列在心肌梗死評價中的對比研究
[Abstract]:Objective to investigate the effects of phase contrast inversion recovery sequence (single shot true-FISPPSIR) and phase contrast inversion recovery sequence (segmented-turbo-FLASH-PSIR) on phase contrast gradient echo (segmented-turbo-FLASH-PSIR) of single breath-holding phase reentrant gradient echo (segmented-turbo-FLASH-PSIR) in cardiac magnetic resonance imaging (Mr). Quantitative and qualitative evaluation of myocardial infarction in contrast enhanced scanning (CE-CMR). Methods Thirty-eight patients with myocardial infarction and cardiac magnetic resonance enhanced examination were included. According to the standard scan scheme, myocardial delayed scanning was performed after completion of myocardial first-pass perfusion (gadolinium contrast agent 0.15 mmol / kg) 12~20min. Left ventricular short-axis scanning was performed by single shot true-FISP-PSIR and segmented-turbo-FLASH-PSIR. The quality of the two sequences was compared, and the volume and ratio of infarcted myocardium were measured automatically by using Q-mass-Medis software. The difference of the volume and proportion of infarcted myocardium was compared between the two sequences in quantitative evaluation of infarct myocardial volume and ratio. Results all the patients completed all the scans successfully. There was no significant difference in contrast noise ratio between the two sequences (P0.05), but there was no significant difference in the total left ventricular volume between the two sequences (P0.05), while the infarcted myocardial volume of single shot true-FISP-PSIR was (30.87 鹵15.72) mL) and that of the infarcted myocardium was (30.87 鹵15.72) mL). Ratio (22.94% 鹵10.94%) compared with segmented-turbo-FLASH-PSIR (29.26 鹵14.07) mL, (20.75% 鹵8.78%),) The difference was not statistically significant (P0.05), but the average acquisition time of the former (20.4s) was shorter than that of the latter (380s). Conclusion Single shot true-FISP-PSIR cardiac magnetic resonance delayed scanning technique can achieve accurate quantitative evaluation of myocardial infarction size with single breath-holding, which is comparable to that of conventional segmented-turbo-FLASH-PSIR sequence, and can significantly shorten the scanning time. It is worthy of clinical application and research.
【作者單位】: 四川大學華西醫(yī)院放射科;四川大學華西醫(yī)院心內科;中國科學院深圳先進技術研究院;
【基金】:國家自然科學基金(No.81271531)資助
【分類號】:R445.2;R542.22
【共引文獻】
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