Optimization of fat suppression technique in the cardiophrenic angle
Objective:The aim of this study was to compare STIR technique and SPAIR technique on the efficiency of the fat suppression,the diagnostic efficacy and subjective score of fat suppression in the cardiophrenic angle imaging.Methods:40 patients were scanned the cardiophrenic angle with 3.0T MRI.Parameters including the signal-to-noise ratio(SNR),imaging efficiency,the subjective score of the image quality and the consistency analysis of the two sequences were measured and compared.Results:The SNR of STIR sequence was 550.05±260.74,and that of SPAIR sequence was 625.31±466.32.There was no significant difference between them(P=0.441).The fat tissue in the cardiophrenic angle was inhibited completely in STIR sequence,the diagnostic efficiency was 100%(30/30).The fat tissue in the cardiophrenic angle was not inhibited in 22 cases in SPAIR sequence,the diagnostic efficiency was 27%(8/30).The subjective scores of two doctors on image quality were consistent.The kappa value of STIR group was 0.739,which was consistent.The kappa value of SPAIR group was 0.756,which was consistent.Fat suppression was effective in 30 cases of STIR sequence,and the subjective score was 2.18±0.39,and the subjective score of spair sequence was 2.00±0.78.The difference between the two groups was statistically significant(P=0.027).Conclusion:The efficiency in fat suppression in the cardiophrenic angle,diagnostic efficacy and subjective scores of the STIR sequence are higher than those of SPAIR sequence.STIR sequence can accurately reflect the true tissue morphology of the cardiophrenic angle,more conducive to the accurate diagnosis of lesions in this area,and provides more help for the differential diagnosis of fat and effusion in the cardiophrenic angle.
NETL
NSTL
万方数据
