Abstract #4049
The changes of uterine fibroids diffusion and perfusion status after MR-guided HIFU ablation evaluated from IVIM MR imaging with different b-values combination
Jia Liu 1 , Bilgin Keserci 2 , Juan Wei 3 , Queenie Chan 4 , Yu Zhang 5 , Rong Rong 1 , and Xiaoying Wang 1
1
Radiology, Peking University First Hospital,
Beijing, Beijing, China,
2
Philips
Healthcare, Seoul, Korea,
3
Philips
Research China, Shanghai, China,
4
Philips
Healthcare, Hong Kong, China,
5
Philips
Healthcare, Beijing, China
Multiple b-values DWI scan was performed on all 23
patients before and 6 months after HIFU ablation of
fibroids using 3.0 T MR acquisition systems. For all
b-values no larger than 100 s/mm2 and 200 s/mm2,
mono-exponential model was used to calculate the
diffusion coefficient respectively. For all b-values,
bi- exponential IVIM model was used to calculate D, D*
and f. Fibroids diffusion increased apparently
accompanied with less microcirculation perfusion 6
months after HIFU treatments. IVIM MR imaging may serve
as a valuable tool in emphasizing such diffusion and
perfusion changes by using all b-values and/or low
b-values no larger than 100 s/mm2.
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