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A comparative study of UTE and T2* mapping imaging technology in quantitative assessment of rotator cuff tear
CAO Xinyue  WEI Jianguo  CHEN Kai  CHEN Zhentao  WANG Bo  LIU Fang  CHEN Jie  XU Zuoxu  HUANG Bingcang 

Cite this article as: Cao XY, Wei JG, Chen K, et al. A comparative study of UTE and T2* mapping imaging technology in quantitative assessment of rotator cuff tear[J]. Chin J Magn Reson Imaging, 2021, 12(12): 84-88. DOI:10.12015/issn.1674-8034.2021.12.017.


[Abstract] Objective To explore the ability of ultra-short echo time (UTE) and T2* mapping imaging technology to quantitatively assess rotator cuff tears. Materials and Methods: Thirty-nine patients with rotator cuff injury were collected and underwent UTE and T2* mapping sequence scan. The supraspinatus tendon was divided into three sub-regions, and the R value of the deltoid muscle (the reciprocal of the T2* value) was used as a reference to obtain the relative R value of each sub-region. Two radiologists performed the Zlatkin type in different sub-regions on the rotator cuff images, which were divided into three types. Type Ⅰ was defined as tendinitis; Type Ⅱ was defined as a small tear; Type Ⅲ was defined as a large tear. Tendons were divided into continuous group (type Ⅰ) and tear group (type Ⅱ and type Ⅲ). The Kappa consistency test was used between different observers, the Kruskal-Wallis H test was used to compare the Zlatkin classification of the two sequences, the LSD pairwise multiple comparisons were used between the groups, and the diagnostic efficacy of the two techniques was compared by the receiver operating characteristic (ROC) curve.Results There is almost complete agreement between the two observers (Kappa=0.821). In the UTE sequence, there are statistical differences between type Ⅰ and type Ⅲ, type Ⅱ and type Ⅲ in the outer and middle subregions (P＜0.05); T2* mapping is only statistically different between type Ⅱ and type Ⅲ (P＜0.05) ). Using UTE sequence to measure the middle subregion to judge whether the tendon is torn is 3.0755, the AUC is 0.782, the sensitivity is 0.75, the specificity is 0.645, the other subregions are not statistically significant (P＞0.05), all none of the sub-regions of the T2* mapping sequence is statistically significant (P＞0.05).Conclusions UTE technology is helpful to judge the rotator cuff tear and quantitatively distinguish the rotator cuff tear in the middle sub-regions. It has good diagnostic efficiency, guides further clinical treatment, and provides a new idea for clinical work.
[Keywords] ultra-short echo time；T2* mapping；rotator cuff tear；quantitative evaluation；magnetic resonance imaging

CAO Xinyue1   WEI Jianguo1   CHEN Kai1   CHEN Zhentao2   WANG Bo1   LIU Fang1   CHEN Jie1   XU Zuoxu1   HUANG Bingcang1*  

1 Department of Imaging, Shanghai PuDong GongLi Hospital, Shanghai 200135, China

2 Canon Medical System (China) Ltd., Beijing 100020, China

Huang BC, E-mail: hbc9209@163.com

Conflicts of interest   None.

ACKNOWLEDGMENTS Shanghai Pudong New Area Health System Leading Personnel Training Program (No.PWRl2017-04); Key Discipline Construction of Health System in Pudong New Area (No.PWZxk2017-26); Discipline Construction of Pudong New Area Health and Health Committee (No. PWGw2020-01).
Received  2021-06-30
Accepted  2021-10-12
DOI: 10.12015/issn.1674-8034.2021.12.017
Cite this article as: Cao XY, Wei JG, Chen K, et al. A comparative study of UTE and T2* mapping imaging technology in quantitative assessment of rotator cuff tear[J]. Chin J Magn Reson Imaging, 2021, 12(12): 84-88. DOI:10.12015/issn.1674-8034.2021.12.017.

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