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Stiffness of the Central Corpus Cavernosum on Shear-Wave Elastography Is Inversely Correlated with the Penile Rigidity Score in Patients with Erectile Dysfunction

 Joo Yong Lee  ;  Dae Chul Jung  ;  Seungsoo Lee  ;  Nam Gyu Kang  ;  Young Taik Oh  ;  Kyunghwa Han 
 WORLD JOURNAL OF MENS HEALTH, Vol.39(1) : 123-130, 2021-01 
Journal Title
Issue Date
Elastography ; Erectile dysfunction ; Penis ; Ultrasonography
Purpose: To perform real-time quantitative measurements of penile rigidity for patients with erectile dysfunction (ED) using shear-wave elastography (SWE). Materials and methods: A total of 92 patients with clinically diagnosed ED filled out an abridged five-item version of the International Index of Erectile Function (IIEF-5) questionnaire and underwent SWE as well as penile color Doppler ultrasound (CDUS) after intracavernosal injection for penile erection. Elasticity measurements were repeated on two sites of the corpus cavernosum (central and peripheral elasticity of corpus cavernosum [ECC]) and the glans penis during the erection phase. Correlations between penile elasticity and rigidity scores or IIEF-5 were evaluated statistically. Penile elasticity was also compared with the ED types based on CDUS. Results: The mean age of all patients was 53.5±13.4 years, and the mean IIEF-5 score was 9.78±5.01. The rigidity score and central ECC value demonstrated a significant correlation (r=-0.272; 95% confidence interval: -0.464 to -0.056; p=0.015). The IIEF-5 score was not significantly correlated with penile elasticity. Vascular ED patients showed significantly higher central ECC values than nonvascular ED patients (p<0.001). At a cut-off value of 8.05 kPa, the central ECC had a specificity of 41.5%, a sensitivity of 84.6%, and an area under the ROC curve of 0.720 with a standard error of 0.059 (p=0.019) for predicting vascular ED. Conclusions: Quantitatively measuring Young's modulus of the corpus cavernosum using SWE could be an objective technique for assessing penile erectile rigidity and the vascular subtype in patients with ED.
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1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Urology (비뇨의학교실) > 1. Journal Papers
Yonsei Authors
Oh, Young Taik(오영택) ORCID logo https://orcid.org/0000-0002-4438-8890
Lee, Seung Soo(이승수) ORCID logo https://orcid.org/0000-0002-6268-575X
Lee, Joo Yong(이주용) ORCID logo https://orcid.org/0000-0002-3470-1767
Jung, Dae Chul(정대철) ORCID logo https://orcid.org/0000-0001-5769-5083
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