MR imaging and dynamic contrast enhancement findings of choroidal hemangioma
10.3760/cma.j.issn.1005-1201.2009.07.018
- VernacularTitle:脉络膜血管瘤的MRI表现及动态增强研究
- Author:
Qinghua CHEN
;
Zhenchang WANG
;
Junfang XIAN
;
Qichang TIAN
;
Fei YAN
;
Bentao YANG
;
Zhonglin LIU
- Publication Type:Journal Article
- Keywords:
Choroid neoplasm;
Hemangioma;
Magnetic resonance imaging
- From:
Chinese Journal of Radiology
2009;43(7):735-738
- CountryChina
- Language:Chinese
-
Abstract:
Objective To characterize the regular and the dynamic contrast enhancement MR imaging in choroidal hemangioma.Methods MR imaging findings of 30 cases (31eyes, 32 lesions) with choroidal hemangioma confirmed by follow-up results were retrospectively analyzed.Among them, postcontrasted T1-weighted imaging was performed in 30 patients and dynamic contrast enhancement scanning was performed in 26 cases.MRI findings and the time-intensity curve of dynamic contrast enhancement were analyzed.Results Among the 32 choroidal hemangiomas, 26 of them were at the temporal side of optic disc and 28 lesions were fusiform.Before enhancement, 23 lesions showed isointense T1-weighted signal and 31 lesions were isointense on T2-weighted imaging.All the lesions showed strong enhancement on postcontrast T1-weighted imaging, including 31 homogenously enhanced lesions and one heterogeneously enhanced lesion.Retinal detachments were found in 18 eyes.Fill-in sign were observed in 12 lesions during dynamic contrast enhancement.The time-intensity curve of dynamic contrast enhancement in 28 lesions suggested a pattern with rapid enhancement and slow washout, time to peak (91.00±25.27) s, slope ratio 3.03±1.13, the median of washout ratio 17.06%, enhancement ratio 2.87±0.79.Conclusion MRI showed a few features of the location, shape, signal characteristics, and enhancement pattern in choroidal hemangioma, which may contribut to diagnosis and treatment plan of this disease.
