CAJ | 학술논문

目的：探讨颅内脱髓鞘假瘤(DPTs)的 MRI 影像表现。方法回顾性分析10例经临床最终诊断为 DPTs 的 MRI 影像资料,所有患者均行 MRI 平扫,其中9例行增强扫描,7例行扩散加权成像(DWI),2例行单体素短回波1 H-MRS。结果其中8例患者病灶周围伴有轻~中度水肿,5例表现为多发病灶,3例表现为单发结节灶,2例表现为单发片状病灶。增强扫描中4例为开环形强化,3例为环形强化,1例结节状强化,1例斑片状强化。病灶在 DWI 上均表现为高信号,1 H-MRS 示2例均有 NAA 峰不同程度降低,Cho 峰、Lac 和 Lip 峰升高,1例谷氨酸/谷氨酰胺复合物(Glx 峰)明显升高。结论DPTs 在 MRI 影像上有一定特点,特征性表现为开环形强化,结合 DWI 及1 H-MRS 技术有助于 DPTs 和其他病变鉴别。
목적：탐토로내탈수초가류(DPTs)적 MRI 영상표현。방법회고성분석10례경림상최종진단위 DPTs 적 MRI 영상자료,소유환자균행 MRI 평소,기중9례행증강소묘,7례행확산가권성상(DWI),2례행단체소단회파1 H-MRS。결과기중8례환자병조주위반유경~중도수종,5례표현위다발병조,3례표현위단발결절조,2례표현위단발편상병조。증강소묘중4례위개배형강화,3례위배형강화,1례결절상강화,1례반편상강화。병조재 DWI 상균표현위고신호,1 H-MRS 시2례균유 NAA 봉불동정도강저,Cho 봉、Lac 화 Lip 봉승고,1례곡안산/곡안선알복합물(Glx 봉)명현승고。결론DPTs 재 MRI 영상상유일정특점,특정성표현위개배형강화,결합 DWI 급1 H-MRS 기술유조우 DPTs 화기타병변감별。
Objective To characterize the MRI features of demyelinating pseudotumors(DPTs).Methods MR data of 10 cases clinically proved with DPTs were retrospectively analyzed .All cases were underwent MRI scan ,9 of 10 cases were performed with enhanced MRI,7 cases were underwent diffusion weight imaging(DWI),2 cases were performed with single voxel short echo 1 H-MRS.Results 8 cases showed lesions with mild to moderate edema,5 cases showed multiple lesions,3 cases were solitary nodular lesions,2 cases were solitary flaky lesions.On enhanced MRI,4 cases presented with open ring like enhancement,3 cases presented ring like enhancement,1 case with nodular enhancement,and 1 case showed patchy enhancement.All lesions showed high signal in DWI.In 1 H-MRS,2 cases demonstrated varying decrease in peaks heights of Nacetylaspartate(NAA),elevation of the choline(Cho),the lactate(Lac)and lipids(1ip).1 case demonstrated evident elevation in peaks height of glutamate/glutamine(Glx).Conclusion DPTs has some characteristics on MRI, especially as open ring like enhancement.It is helpful to identified DPTs from other lesions when together with DWI and 1 H-MRS.