中华口腔医学杂志
中華口腔醫學雜誌
중화구강의학잡지
Chinese Journal of Stomatology
2013年
12期
711-715
,共5页
唐为卿%乐维婕%王平仲%石慧敏%余强
唐為卿%樂維婕%王平仲%石慧敏%餘彊
당위경%악유첩%왕평중%석혜민%여강
磁共振成像%咀嚼肌间隙%肿瘤和瘤样病变
磁共振成像%咀嚼肌間隙%腫瘤和瘤樣病變
자공진성상%저작기간극%종류화류양병변
Magnetic resonance imaging%Masticatory space%Tumor and tumor-like lesion
目的 总结咀嚼肌间隙软组织病变的动态增强MRI表现特点,并评价其诊断价值.方法 回顾分析53例咀嚼肌间隙软组织病变(均经手术病理证实)的常规MRI和动态增强影像资料.53例中,女性26例、男性27例,平均年龄为35.6岁.计算所有病变的强化达峰时间,相对最大强化率和相对流出率.结果 恶性病变的平均强化达峰时间为(69.6±6.9)s,良性病变的平均强化达峰时间为(130.3±13.2)s;恶性病变的平均相对流出率为(8.7±2.1)％,良性病变的平均相对流出率为(29.7±5.5)％.相比良性病变,恶性病变具有较快的强化达峰时间(P =0.001)和较低的相对流出率(P =0.003).当强化达峰时间＜92.2 s和相对流出率≤16.0％被视为恶性肿瘤时,动态增强MRI鉴别良性和恶性病变的敏感性、特异性、准确性、阳性预测值和阴性预测值分别可达到72.3％、93.5％、84.9％、88.9％和82.9％.结论 动态增强MRI对咀嚼肌间隙软组织良性病变和恶性肿瘤的鉴别具有一定价值.
目的 總結咀嚼肌間隙軟組織病變的動態增彊MRI錶現特點,併評價其診斷價值.方法 迴顧分析53例咀嚼肌間隙軟組織病變(均經手術病理證實)的常規MRI和動態增彊影像資料.53例中,女性26例、男性27例,平均年齡為35.6歲.計算所有病變的彊化達峰時間,相對最大彊化率和相對流齣率.結果 噁性病變的平均彊化達峰時間為(69.6±6.9)s,良性病變的平均彊化達峰時間為(130.3±13.2)s;噁性病變的平均相對流齣率為(8.7±2.1)％,良性病變的平均相對流齣率為(29.7±5.5)％.相比良性病變,噁性病變具有較快的彊化達峰時間(P =0.001)和較低的相對流齣率(P =0.003).噹彊化達峰時間＜92.2 s和相對流齣率≤16.0％被視為噁性腫瘤時,動態增彊MRI鑒彆良性和噁性病變的敏感性、特異性、準確性、暘性預測值和陰性預測值分彆可達到72.3％、93.5％、84.9％、88.9％和82.9％.結論 動態增彊MRI對咀嚼肌間隙軟組織良性病變和噁性腫瘤的鑒彆具有一定價值.
목적 총결저작기간극연조직병변적동태증강MRI표현특점,병평개기진단개치.방법 회고분석53례저작기간극연조직병변(균경수술병리증실)적상규MRI화동태증강영상자료.53례중,녀성26례、남성27례,평균년령위35.6세.계산소유병변적강화체봉시간,상대최대강화솔화상대류출솔.결과 악성병변적평균강화체봉시간위(69.6±6.9)s,량성병변적평균강화체봉시간위(130.3±13.2)s;악성병변적평균상대류출솔위(8.7±2.1)％,량성병변적평균상대류출솔위(29.7±5.5)％.상비량성병변,악성병변구유교쾌적강화체봉시간(P =0.001)화교저적상대류출솔(P =0.003).당강화체봉시간＜92.2 s화상대류출솔≤16.0％피시위악성종류시,동태증강MRI감별량성화악성병변적민감성、특이성、준학성、양성예측치화음성예측치분별가체도72.3％、93.5％、84.9％、88.9％화82.9％.결론 동태증강MRI대저작기간극연조직량성병변화악성종류적감별구유일정개치.
Objective To determine the characteristics and diagnostic value of dynamic contrast enhanced MRI(DCE-MRI) in differentiating benign soft tissue lesions from malignant tumors affecting the masticator space(MS).Methods Prior to managements,conventional MRI and DCE-MRI were performed in 53 patients who suffered from primary or secondary soft tissue lesions affecting the MS.The time to peak (TTP),relative maximum enhancement (RME) and relative washout ratio (RWO) were separately calculated.Results Mean TTP of benign and malignant lesions were (130.3 ± 13.2) and (69.6 ± 6.9) s,respectively.Mean RWO of benign and malignant lesions were (29.7 ± 5.5) ％ and (8.7 ± 2.1) ％,respectively.Malignant lesions had a significantly shorter TTP(P =0.001) and lower RWO (P =O.003) than benign lesions.When TTP was less than 92.2 s and RWO less than or equal to 16.0％,malignant tumors were considered.DCE-MRI had a sensitivity of 72.3％,specificity of 93.5％,accuracy of 84.9％,positive predictive value of 88.9％,and negative predictive value of 82.9％.Conclusions As a noninvasive imaging technique,DCE-MRI is valuable to differentiate benign soft tissue lesions from malignant tumors affecting the MS.
