Özel Deniz, Demir Yüksel, Özel Betül Duran, Adaş Müjdat
Department of Radiology, Sağlık Bilimleri University, Prof. Dr Cemil Taşcıoğlu şehir hastanesi, Istanbul, Turkey.
Department of Radiology, Sağlık Bilimleri University, Hamidiye Etfal Research and Education Hospital, Istanbul, Turkey.
Acta Radiol. 2021 Oct;62(10):1365-1373. doi: 10.1177/0284185120968567. Epub 2020 Oct 29.
In addition to the traditional strain ratio (STR), a novel measurement termed hard percent of the whole tendon, provided by the device's software and resembling shear-wave elastography, was included in the study.
To evaluate the correlation between magnetic resonance imaging (MRI) and strain elastography findings in cases with rotator cuff tendinopathy, including tears.
As a prospective study, cases suggestive of rotator cuff tendinopathy were included. After MRI evaluation by two observers, grading of the elastography examination was performed by a third radiologist. For the first measurement, the region of interest (ROI) was chosen from the gray-scale evaluation corresponding to the area showing a MRI pathological signal. Stiffness was assessed with the STR. For the second measurement, the whole visible tendon was measured as the ROI. The hard percent (unaffected areas as a percent) was measured. Correlation coefficients between MRI grade and the two strain value measurements were calculated.
There were 93 cases (31 men, 62 women) with 112 involved tendons. The correlation coefficient between MRI grade and age was calculated as 0.56, between MRI grade and STR it was -0.51, and with the novel measurement the correlation coefficient was -0.53.
This study showed a good association of findings of tendon stiffness with those of tendinopathy on MRI. Using the hard ratio as a novel measurement, its correlation with MRI grade was as reliable as the STR. We also experienced that the benefit of elastography is a challenging issue for defining small ruptures.
除了传统应变率（STR）外，本研究还纳入了一种由设备软件提供的、类似于剪切波弹性成像的新型测量方法，即整个肌腱的硬百分比。
评估肩袖肌腱病（包括撕裂）病例中磁共振成像（MRI）与应变弹性成像结果之间的相关性。
作为一项前瞻性研究，纳入疑似肩袖肌腱病的病例。由两名观察者进行MRI评估后，由第三位放射科医生进行弹性成像检查分级。第一次测量时，从对应于显示MRI病理信号区域的灰度评估中选择感兴趣区域（ROI）。用STR评估硬度。第二次测量时，将整个可见肌腱作为ROI进行测量。测量硬百分比（未受影响区域的百分比）。计算MRI分级与两种应变值测量之间的相关系数。
共有93例患者（31例男性，62例女性），累及112条肌腱。计算得出MRI分级与年龄之间的相关系数为0.56，与STR之间的相关系数为-0.51，与新型测量方法之间的相关系数为-0.53。
本研究表明，肌腱硬度的检查结果与MRI上肌腱病的检查结果具有良好的相关性。使用硬比率作为一种新型测量方法，其与MRI分级的相关性与STR一样可靠。我们还体会到，弹性成像在确定小撕裂方面的益处是一个具有挑战性的问题。
