Magnetic resonance imaging for evaluation of therapeutic effects of high intensity focused ultrasound for breast cancer
- VernacularTitle:磁共振扫描用于评价HIFU治疗乳腺癌的效果
- Author:
Haiyan WANG
- Publication Type:Journal Article
- Keywords:
Breast cancer;
High intensity focused ultrasound;
Dynamic contrast enhanced magnetic resonance imaging
- From:
Journal of Chongqing Medical University
1986;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To verify the applicability of Dynamic Contrast Enhanced Magnetic Resonance Imaging(DCE-MRI)to evaluate the breast cancer therapy using the high intensity focused uhrasound(HIFU).Methods:Both DCE-MRI and conventional T_1W/T_2W images were acquired for the total 8 subjects.Two consecutive scans were performed for every patient(before operation and 2 weeks after operation)while four were performed for only 2 patients(additional for 6 months and 12 months after operation).The breast cancer therapy by HIFU was assessed hy comparing the changes of signal,the dynamic patterns of time-signal intensity curve,the early-phase contrast enhancement ratios and vessel anatomies around cancer focuses.Results: The shortened T_2 signals were observed in cancer focuses of 5 subjects while 3 still showed longer T_2 values which were differentiated by the high intensity in T_2W images.The early-phase contrast enhancement ratios of those 5 subjects decreased from 60%～80% to
