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Usefulness of Strain Elastography, ARFI Imaging, and Point Shear Wave Elastography for the Assessment of Crohn Disease Strictures

Objectives The aim of this study was to evaluate the diagnostic performance of strain elastography, acoustic radiation force impulse (ARFI) imaging and point shear wave elastography (p‐SWE) for assessment of the predominant types of intestinal stenosis in Crohn disease. Methods Twenty‐five patients...

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Published in:Journal of ultrasound in medicine 2019-11, Vol.38 (11), p.2861-2870
Main Authors: Ding, Shi‐si, Fang, Yan, Wan, Jing, Zhao, Chong‐Ke, Xiang, Li‐Hua, Liu, Hui, Pu, Huan, Xu, Guang, Zhang, Kun, Xu, Xiao‐Rong, Sun, Xiao‐Min, Liu, Chang, Wu, Rong
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Language:English
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Summary:Objectives The aim of this study was to evaluate the diagnostic performance of strain elastography, acoustic radiation force impulse (ARFI) imaging and point shear wave elastography (p‐SWE) for assessment of the predominant types of intestinal stenosis in Crohn disease. Methods Twenty‐five patients were enrolled in this study, among whom 25 suspicious stenoses in 25 intestinal segments were studied using gray scale ultrasonography. All 3 elastography methods were performed, and all patients underwent endoscopy within 24 hours with pathologic biopsy. The sensitivity, specificity, accuracy, positive predictive value (PPV), negative predictive value (NPV), Youden index, and area under the receiver operating characteristic curve (AUROC) were calculated. Pathologic findings were regarded as the gold standard. Results For SE, the optimal cutoff value was a score of 4 or greater (sensitivity, 75%; specificity, 66.7%; accuracy, 68%; PPV, 30%; NPV, 93.3%; AUROC, 0.708; however, P > .05). The results of ARFI imaging were similar: the optimal cutoff value was a score of 4 or greater (sensitivity, 50%; specificity, 81%; accuracy, 76%; PPV, 33.3%; NPV, 89.4%; AUROC, 0.669; P 
ISSN:0278-4297
1550-9613
DOI:10.1002/jum.14989