Photoshop软件对胃间质瘤和胃平滑肌瘤内镜超声图像的鉴别价值

背景:内镜超声(EUS)已成为消化道黏膜下隆起性病变的首选检查方法,但对胃间质瘤和胃平滑肌瘤的鉴别十分困难,目前有学者尝试利用Photoshop软件鉴别容易误诊的疾病。目的:探讨Photoshop软件对胃间质瘤与胃平滑肌瘤EUS图像的鉴别价值。方法:选取经病理和免疫组化确诊的118例胃间质瘤和42例胃平滑肌瘤的EUS图像,利用Photoshop软件分别测定两组病灶的灰度平均值(代表回声强度)和灰度标准偏差平均值(代表回声均匀度),分析其鉴别价值。结果:胃间质瘤组和胃平滑肌瘤组EUS图像灰度平均值分别为71.94和48.99,差异有统计学意义(P0.01);两组EUS图像灰度标准偏差分别为16.63和9.80,差异有统计学意义(P0.01)。结论:EUS下,胃间质瘤的回声强度高于胃平滑肌瘤,而胃平滑肌瘤的回声更均匀,EUS联合Photoshop软件通过分析EUS图像的灰度平均值和灰度标准偏差有助于鉴别胃间质瘤和胃平滑肌瘤。

Value of Photoshop Software in Differentiating Endoscopic Ultrasonography Image of Gastric Stromal Tumor from Gastric Leiomyoma

Background：Endoscopic ultrasonography（ EUS）is the first choice for examining submucosal protuberant lesions in the gastrointestinal tract,however,it is very difficult to differentiate gastric stromal tumor from gastric leiomyoma. Photoshop software now is tried to differentiate some easily misdiagnosed diseases. Aims：To investigate the value of Photoshop software in differentiating EUS image of gastric stromal tumor from gastric leiomyoma. Methods：EUS image of 118 cases of gastric stromal tumor and 42 cases of gastric leiomyoma confirmed by pathological and immunohistochemical examination were collected,mean gray value（ intensity of echo）and gray value standard deviation（ uniformity of echo）of EUS image of lesion were determined by Photoshop software,and the differentiation value was analyzed. Results：The mean gray value of EUS image of gastric stromal tumor was significantly higher than that of gastric leiomyoma（71. 94 vs. 48. 99,P〈0. 01）. The gray value standard deviation of EUS image of gastric stromal tumor was significantly higher than that of gastric leiomyoma（16. 63 vs. 9. 80,P〈0. 01）. Conclusions：Under EUS,gastric stromal tumor exhibits higher intensity of echo and less uniformity of echo than gastric leiomyoma. EUS combined with Photoshop software is helpful for differentiating gastric stromal tumor from gastric leiomyoma by analyzing mean gray value and gray value standard deviation of the lesion.