Home    中文  
 
  • Search
  • lucene Search
  • Citation
  • Fig/Tab
  • Adv Search
Just Accepted  |  Current Issue  |  Archive  |  Featured Articles  |  Most Read  |  Most Download  |  Most Cited

Chinese Journal of Medical Ultrasound (Electronic Edition) ›› 2025, Vol. 22 ›› Issue (11): 1036-1045. doi: 10.3877/cma.j.issn.1672-6448.2025.11.007

• Abdominal Ultrasound • Previous Articles    

Utility of super-resolution ultrasound in characterizing tumor blood flow for differential diagnosis of gallbladder polypoid lesions

Jing Wang1,2, Lijuan Mao1, Lifan Wang1, Yaqin Zhang1, Chongke Zhao1, Yuli Zhu1,3, Cuixian Li1,4, Huixiong Xu1,3,4, Hong Han1,3,4,()   

  1. 1 Department of Ultrasound, Zhongshan Hospital, Fudan University, Shanghai 200032, China
    2 Department of Ultrasound, Xiamen Hospital of Traditional Chinese Medicine, Xiamen 361000, China
    3 Institute of Ultrasound in Medicine and Engineering of Fudan University, Shanghai 200032, China
    4 Shanghai Institute of Medical Imaging, Shanghai 200032, China
  • Received:2025-07-24 Online:2025-11-01 Published:2026-02-12
  • Contact: Hong Han

Abstract:

Objective

To evaluate the value of super-resolution ultrasound (SRUS) in identifying tumor blood flow characteristics for differential diagnosis of neoplastic versus non-neoplastic gallbladder polyps.

Methods

A total of 86 patients with gallbladder polypoid lesions confirmed by surgical pathology at Zhongshan Hospital of Fudan University from March 2024 to April 2025 were enrolled. According to the pathology results, they were classified into 46 cases of neoplastic polyps and 40 cases of non-neoplastic polyps. All patients underwent preoperative conventional ultrasound and contrast-enhanced ultrasound (CEUS). CEUS was used to observe the enhancement of gallbladder polypoid lesions in the arterial phase and their washout in the venous phase. SRUS was applied to evaluate the blood flow pattern and quantitative parameters of the lesions. The receiver operating characteristic curve was drawn to compare the diagnostic efficacy of single and combined modalities (conventional ultrasound, CEUS, and SRUS) for identifying neoplastic gallbladder polyps.

Results

SRUS successfully detected intralesional blood flow in all 86 cases of gallbladder polypoid lesions (86/86, 100%). Neoplastic gallbladder polyps were predominantly characterized by grades Ⅱ and Ⅲ blood flow patterns (40/46, 86.96%). Significant differences were observed between neoplastic and non-neoplastic polyps in both blood flow pattern grade and quantitative parameters, including blood flow velocity, fractal dimension, vascular density, blood flow volume, and perfusion index (all P≤0.001). SRUS yielded an area under the curve (AUC) value of 0.82 in diagnosing neoplastic gallbladder polyps usingblood flow patterns of grade Ⅱ or higher, which was significantly higher than that of conventional ultrasound (polyp maximum diameter≥14.5 mm, AUC=0.71) and CEUS (early venous phase washout, AUC=0.70) (P=0.001 and 0.008, respectively). Three features derived from conventional ultrasound, CEUS, and SRUS were selected to construct three combination diagnostic models: conventional ultrasound plus CEUS, conventional ultrasound plus SRUS, and conventional ultrasound plus CEUS plus SRUS. Among these combination models, the diagnostic model integrating SRUS, conventional ultrasound, and CEUS showed the optimal performance (AUC=0.84).

Conclusion

The microvascular morphology and quantitative parameters derived from SRUS enable effective differentiation between neoplastic and non-neoplastic gallbladder polyps. Furthermore, the SRUS-based risk prediction model demonstrates significantly superior diagnostic performance compared with conventional ultrasound–based approaches, thereby substantially enhancing the diagnostic value of ultrasound in the evaluation of gallbladder polypoid lesions.

Key words: Super-resolution ultrasound, Contrast enhanced ultrasound, Gallbladder polypoid lesions, Blood flow

Copyright © Chinese Journal of Medical Ultrasound (Electronic Edition), All Rights Reserved.
Tel: 010-51322630、2632、2628 Fax: 010-51322630 E-mail: csbjb@cma.org.cn
Powered by Beijing Magtech Co. Ltd