CT值直方图鉴别肺不典型腺瘤样增生和细支气管肺泡癌  

The Clinical Application of CT Value Histogram in the Differential Diagnosis of Atypical Adenomatous Hyperplasia from Bronchioloalveolar Carcinoma

作　　者：姜华伟[1] 于中海[1] 刘永江[1] 

机构地区：[1]威海市文登中心医院影像中心,山东264400

出　　处：《放射学实践》2006年第9期959-961,共3页Radiologic Practice

摘　　要：目的:探讨CT值直方图对鉴别肺不典型腺瘤样增生和细支气管肺泡癌的临床应用价值。方法:测量呈小片状毛玻璃样密度影的8例肺不典型腺瘤样增生病灶直径(0.7±0.3)cm和10例细支气管肺泡癌病灶直径(1.1±0.5)cm的CT值,获得病灶的CT值直方图并记录其平均CT值和峰值CT值,比较两种病变的CT值直方图的差异。结果:所有病灶在CT值直方图上均有一个明显的峰值,不典型腺瘤样增生的峰值CT值(-707±36HU)和平均CT值(-697±56HU)明显低于细支气管肺泡癌(-573±72)HU和(-541±73)HU,差异均有极显著性意义(P<0.001),但两者间峰值CT值的重叠范围小于平均CT值。结论:对≤1cm的磨玻璃密度影,CT值直方图在鉴别肺不典型腺瘤样增生和细支气管肺泡癌有重要的临床价值。Objective：To study the clinical application value of CT histogram in differentiating atypical adenomatous hyperplasia （AAH） from bronchioalveolar carcinoma （BAC）. Methods： 18 cases of AAH and BAC appeared as ground glass opacity （GGO） on computed tomography. Histogram made by the pixel CT number was drawn for AAH （n=8） and BAC （n= 10）. The peak and the mean CT numbers were calculated and compared. Results：There was no significant difference in lesion size between AAH and BAC,the sizes of all AAH were lesser than or equal to lcm in diameter. All of the AAH and BAC demonstrated an obvious peak on histogram. The peak CT value of AAH was （-707±36）HU,and the mean CT value was （-697±56）HU,which was obviously lower than that of BAC E（-573±72）HU],with significant difference （P〈0. 001）. But the overlapping area of peak value of the two lesions was lesser than that of mean CT value. Conclusion： For Ground glass opacity less than or equal to lcm in diameter,CT number histogram had clinical significance in the differential diagnosis for AAH and BAC.

关 键 词：肺肿瘤 体层摄影术 X线计算机 诊断 

分 类 号：R816.4[医药卫生—放射医学] R734[医药卫生—临床医学]