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Chinese Journal of Medical Ultrasound (Electronic Edition) ›› 2019, Vol. 16 ›› Issue (01): 66-71. doi: 10.3877/cma.j.issn.1672-6448.2019.01.015

Special Issue:

• Genitourinary Ultrasound • Previous Articles     Next Articles

The clinical study of multi-mode trans-rectal ultrasonic imaging scoring system in the diagnosis of prostate cancer

Mingbo Zhang1, Yukun Luo1,, Yan Zhang1, Yiru Wang1, Meng Wu1, Jie Tang1, Xiang Fei1   

  1. 1. Department of Ultrasound, Chinese People's Liberation Army General Hospital, Beijing 100853, China
  • Received:2018-07-04 Online:2019-01-01 Published:2019-01-01
  • Contact: Yukun Luo

Abstract:

Objective

To establish a multi-modal trans-rectal ultrasonic imaging scoring system for prostate cancer and to evaluate its diagnostic value.

Methods

From May 2016 to December 2017, 86 patients with suspected prostate cancer who received ultrasound (US) guided biopsy and/or surgery were enrolled in the study. The characteristics of trans-rectal conventional US (TRUS), shear wave sonoelastography (SWE) and contrast enhanced ultrasound (CEUS) were analyzed for each prostate with comparison of pathological results. And multi-mode scoring system were established for the diagnosis of prostate cancer.

Results

For prostate cancer, TRUS showed low echo, unclear boundary, irregular shape, unclear internal and external gland boundary, capsule invasion, rich blood flow signal and center vascularization; SWE showed asymmetric distribution with higher average elastic modulus [(94.7±44.2) kPa] than that of benign lesions [(60.8±26.0) kPa], the difference was statistically significant (t=-3.578, P=0.001); CEUS showed rapid and high enhancement, heterogeneous distribution (low enhanced area with punctate vascular structure), punctate or nodular enhancement, unclear internal and external gland boundary, capsular or rectal wall invasion. If any of TRUS, SWE and CEUS findings was positive, the sensitivity, negative predictive value and accuracy of multi-mode trans-rectal US were 98.0%, 96.7% and 89.5% respectively. If all of TRUS, SWE and CEUS findings were positive, the specificity and positive predictive value of multi-mode trans-rectal US were 97.3% and 97.1% respectively.

Conclusion

Trans-rectal multimodal ultrasonic imaging scoring system can improve the diagnostic value of ultrasound on prostate cancer.

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