CAJ | 학술논문

目的：探讨纤维型脑膜瘤的磁共振平扫、增强及弥散加权成像（DWI）表现。方法：回顾性分析64例经手术病理证实的纤维型脑膜瘤的 MRI 常规表现、DWI 表现，并计算 ADC 值。结果：64例纤维型脑膜瘤中， T1WI 上，肿瘤呈等信号40例，略低信号19例，混杂信号5例；T2WI 上，肿瘤呈等信号40例，略高信号8例，混杂信号4例，略低信号12例；出现瘤周水肿24例。增强扫描，46例均匀强化，12例不均匀强化，6例呈环形强化，脑膜尾征48例。DWI 上，肿瘤呈等信号40例，稍高信号16例，混杂信号2例，低信号6例。ADC 图上，肿瘤呈等信号40例，稍高信号16例，低信号8例。64例纤维型脑膜瘤肿瘤实质与正常脑白质 ADC 值间差异有统计学意义（P ＜0．05）；24例伴有水肿的肿瘤实质与瘤周水肿 ADC 值之间差异有统计学意义（P ＜0．05）。结论：纤维型脑膜瘤在 MRI 上的表现多种多样，DWI 及 ADC 值可提高该病的检出率，是常规 MRI 检查的有效补充。
목적：탐토섬유형뇌막류적자공진평소、증강급미산가권성상（DWI）표현。방법：회고성분석64례경수술병리증실적섬유형뇌막류적 MRI 상규표현、DWI 표현，병계산 ADC 치。결과：64례섬유형뇌막류중， T1WI 상，종류정등신호40례，략저신호19례，혼잡신호5례；T2WI 상，종류정등신호40례，략고신호8례，혼잡신호4례，략저신호12례；출현류주수종24례。증강소묘，46례균균강화，12례불균균강화，6례정배형강화，뇌막미정48례。DWI 상，종류정등신호40례，초고신호16례，혼잡신호2례，저신호6례。ADC 도상，종류정등신호40례，초고신호16례，저신호8례。64례섬유형뇌막류종류실질여정상뇌백질 ADC 치간차이유통계학의의（P ＜0．05）；24례반유수종적종류실질여류주수종 ADC 치지간차이유통계학의의（P ＜0．05）。결론：섬유형뇌막류재 MRI 상적표현다충다양，DWI 급 ADC 치가제고해병적검출솔，시상규 MRI 검사적유효보충。
Objective:To explore the appearance of fibrous meningioma in MRI plain scan,enhancement scan and diffusion -weighted imaging (DWI).Methods:Conventional MRI and DWI findings in 64 patients of fibrous menin-gioma confirmed by pathology of surgery were retrospectively analyzed and ADC values were calculated.Results:Of all 64 cases of fibrous meningiomas,iso -intensity of 40 cases,slightly hypointensity of 19 cases,mixed intensity of 5 ca-ses on T1WI.iso -intensity of 40 cases,slightly hyperintensity of 8 cases,mixed intensity of 4 cases,slightly hypoin-tensity of 12 cases on T2WI.Peritumormal edema of 24 cases.On enhancement images,homogeneous enhancement of 46 cases,inhomogeneous enhancement of 12 cases,ring -enhancement of 6 cases and dural tail sign of 48 cases.On DWI,iso -intensity of 40 cases,slightly hyperintensity of 16 cases,mixed intensity of 2 cases and hypointensity of 6 cases.On ADC map,iso -intensity of 40 cases,slightly hyperintensity of 16 cases and hypointensity of 8 cases.In 64 cases the difference of ADC values between tumor parenchyma and normal white matter was statistically significant(P<0.05).In 24 cases with peritumoral edema,the difference of ADC values between tumor parenchyma and peritu-moral edema was statistically significant (P <0.05).Conclusion:There are a variety of findings for fibrous meningio-ma on MRI.DWI and ADC value can increase the detection rate of the fibrous meningioma and can be the effective supplementary examination for conventional MRI.