磁共振集合序列与T2mapping序列在慢性冈上肌腱炎定量评估中的价值研究OA北大核心CSTPCD

Objective:To explore the diagnostic value of magnetic resonance image compilation (MAGiC) and T2mapping sequences in chronic supraspinatus tendinitis,and compare the image quality of the two in supraspinatus tendon scanning,and the T2 values of the two sequences in chronic supraspinatus tendonitis. Correlation of different subregions in supraspinatus tendonitis. Materials and Methods:A retrospective collection of 30 patients with chronic supraspinatus tendonitis (tendinitis group) and 26 healthy persons undergoing physical examination (control group) in our hospital from October 2022 to January 2024,and all underwent conventional MRI,T2mapping sequence and MAGiC sequence scanning. Two radiologists divided the supraspinatus tendon into lateral,middle,and medial subregions according to its course,and measured the T2 values of different subregions on the MAGiC sequence and T2mapping sequence. Compare the image quality of the first echo image of the T2mapping sequence and MAGiC T2WI,and measure the signal to noise ratio (SNR) and contrast to noise ratio (CNR). The Mann-Whitney U test was used to analyze the differences in quantitative parameters between the tendonitis group and the control group in different subregions as well as the image quality of the two sequences. Draw the receiver operating characteristic (ROC) curve and calculate the area under the curve (AUC) to evaluate its diagnostic performance for tendonitis. Pearson correlation analysis was used to evaluate the correlation between T2 values in different subregions measured by T2mapping sequence and MAGiC sequence. Results:There is no statistically significant difference in the subjective score of the first echo image quality between MAGiC T2WI and T2mapping sequences reconstructed images (Z=−1.535,P>0.05);the CNR of MAGiC T2WI images[15.45 (12.76,20.46)]is higher than that of T2mapping sequences the first echo image[9.94 (8.74,12.23)],the difference is statistically significant (Z=−2.473,P<0.001),while the SNR of the MAGiC T2WI image[2.49 (2.16,2.71)]was lower than the first in the T2mapping sequence echo image[5.82 (5.16,7.44)],the difference was statistically significant (Z=−0.609,P<0.001);the T2 values of MAGiC sequence and T2mapping sequence were both higher in the lateral subregion and medial subregion of the tendinitis group. In the control group,the difference was statistically significant (P<0.05);the T1 value of the MAGiC sequence in the lateral subregion of the tendonitis group was higher than that in the control group,and the difference was statistically significant (P<0.05). The AUC of MAGiC sequence T1 and T2 values in diagnosing supraspinatus tendinitis in the lateral sub-region are 0.663 and 0.799 respectively,and the AUC of T2 value in diagnosing supraspinatus tendinitis in the medial sub-region is 0.762;the T2mapping sequence T2 value in the lateral sub-region,the AUCs for diagnosing supraspinatus tendonitis in the medial subregion were 0.822 and 0.711 respectively. The MAGiC sequence T2 value and T2mapping T2 value were positively correlated in the lateral subregion,middle subregion,and medial subregion of the supraspinatus tendon (correlation coefficients were 0.736,0.437,0.464 respectively). Conclusions:The T1 and T2 values of the MAGiC quantitative map and T2mapping T2 values can effectively assess the heterogeneity of the internal components of the supraspinatus tendon,reflect the differences between the internal components of the normal tendon and the regional differences of the tendon itself,and provide an objective basis for the quantification of the supraspinatus tendon degeneration in clinical practice.