CAJ | 학술논문

目的：研究眼眶海绵状血管瘤的CT表现及其诊断价值。材料和方法：对55例眼眶海绵状血管瘤CT图像进行回顾性分析。结果：45例肿块位于眼眶肌锥内，2例深达眶尖部；另l0例占据肌锥内外或仅发生于肌锥外。横断面扫描显示34例肿块位于眼球后，其中20例紧贴球后壁；冠状位扫描较难分辨眼球与球后肿瘤的前后界限。横断面扫描中，肿瘤与视神经、眼外肌界限不清；但在冠状位可显示两者受压移位。43例肿瘤为类圆形或椭圆形，边界清晰，10例呈不规则或团块状，且边界欠清，另2例两个瘤体呈哑铃状相连。38例密度不均或欠均，其中6例有高密度斑点或片状阴影，2例为钙化或静脉石。30例增强后扫描中20例部分增强明显，且增强后肿瘤的边界、形态、大小更加清楚。结论：横断面在辨别肿瘤与眼眶及眼球的关系，冠状位在区分肿瘤与视神经、眼外肌时各有优势，增强扫描有助于提高血管瘤的CT诊断率。将横断面增强扫描和冠状位平扫相结合，能使CT检查对血管瘤的定位、定量及定性诊断的准确率明显提高。
목적：연구안광해면상혈관류적CT표현급기진단개치。재료화방법：대55례안광해면상혈관류CT도상진행회고성분석。결과：45례종괴위우안광기추내，2례심체광첨부；령l0례점거기추내외혹부발생우기추외。횡단면소묘현시34례종괴위우안구후，기중20례긴첩구후벽；관상위소묘교난분변안구여구후종류적전후계한。횡단면소묘중，종류여시신경、안외기계한불청；단재관상위가현시량자수압이위。43례종류위류원형혹타원형，변계청석，10례정불규칙혹단괴상，차변계흠청，령2례량개류체정아령상상련。38례밀도불균혹흠균，기중6례유고밀도반점혹편상음영，2례위개화혹정맥석。30례증강후소묘중20례부분증강명현，차증강후종류적변계、형태、대소경가청초。결론：횡단면재변별종류여안광급안구적관계，관상위재구분종류여시신경、안외기시각유우세，증강소묘유조우제고혈관류적CT진단솔。장횡단면증강소묘화관상위평소상결합，능사CT검사대혈관류적정위、정량급정성진단적준학솔명현제고。
Purpose: To investigate the CT features and to assess the value of computed tomography(CT)in evaluation of orbital cavernous hemangioma (OCH). Materials and Methods: CT findings of 55cases with OCH were retrospectively analyzed. Results: Of 55 OCHs, 45 were located within the orbital cone, and 10 were outside or partly inside and partly outside the cone. The relation between the OCH and the eyeball was revealed clearly on axial images, but not on coronal images; contrarily, the relation between the OCH and the optical nerve or extraocular muscles was showed well on coronal images, but not on the axial images. Thirty - eight tumors were found behind the eyeball, and 20 of them were closed to the posterior wall of eyeball. Forty - three tumors were oval or round with a clear boundary, and 10 OCHs appeared as irregular mass lesions with obscure boundary. The rest 2 OCHs were hourglass in shape. The density of tumors was not uniform in 38 cases. Spotty or lumpy high - density areas within the tumors were found in 6 of them, in which 2 had calcifications or phlebolithes. Twenty of 30 cases were heterogeneously enhanced on post - contrast images. Conclusion: The relation between the tumor and the orbit or eyeball is usually demonstrated more clearly on axial images than on coronal images, but the coronal view has the advantage of distinguishing the tumor from the optical nerve. Contrast enhancement is helpful to improve the diagnostic accuracy in the diagnosis of the OCH. It is of great benefit to improve the abilities of 1ocalization, quantification and qualification in the diagnosis of the OCH, when both the axial and coronal images are viewed at same time.