Diagnostic value of parametric imaging from contrast-enhanced ultrasound in retroperitoneal tumors
10.3760/cma.j.issn.1004-4477.2011.08.010
- VernacularTitle:造影参数成像诊断腹膜后肿块的价值
- Author:
Jueying LI
;
Wenwei CHEN
;
Yuguo ZHANG
;
Bin SUN
;
Wei HU
;
Yan LIU
- Publication Type:Journal Article
- Keywords:
Ultrasonography;
Microbubbles;
Retroperitoneal neoplasms
- From:Chinese Journal of Ultrasonography
2011;20(8):676-679
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the diagnostic value of parametric imaging of contrast-enhanced ultrasound (CEUS) in retroperitoneal tumors using SonoLiver software. Methods Sixty cases of retroperitoneal tumors were analyzed by CEUS with SonoLiver software. The color-mapped images of timedependent indexes, such as rise time(RT), time to peak(TTP), mean transit time(mTT), were abserved in the regions of interests(ROIS). The degree of the coincidence between pathologic diagnosis and parametric imaging diagnosis was carefully study by comparing parametric images with histopathological findings.Results 1 ) There was statistical significance of RT, TTP and mTT between the benign and malignant retroperitoneal tumors. 2) The time-dependent parametric images were obvious different between benign lesions and malignant lesions. The malignant lesions enjoyed a confused boundary and distribute disorderly,while the benign tumors had a clear distribution. There was a good coincidence degree between pathologic diagnosis and parametric imaging diagnosis(κ =0. 625, P =0. 000). Sensibility, specificity, the rate of misdiagnosis and missed diagnosis, the degree of accuracy respectively was 85.3 ％, 76.9 ％, 23.1 ％, 14.7 ％,81.7％ by the new diagnosis method. Conclusions Parametric imaging is a very useful way of evaluating the level of blood flow with the tumors and provides a new vision in the diagnosis of retroperitoneal tumors. It demonstrates retroperitoneal tumors clearly and objectively.
