Comparative study between conventional camera images and smartphone images for eyelid tumor telediagnosis.

ABSTRACT Objective: to compare the accuracy of eyelid tumor diagnosis obtained by evaluating conventional camera images with the ones obtained by evaluating smartphone images. Methods: from January 2016 to July 2017, 36 patients underwent face-to-face external assessments and biomicroscopic examinations to establish clinical diagnoses. The lesions were photographed using Canon PowerShot SX530 HS Digital Camera (16.8 Megapixels) and Samsung GALAXY S4 smartphone camera. All lesions were resected and submitted to anatomopathological examinations. Preoperative images were sent to two specialists in eyelid diseases and then remotely analyzed. Data from in-person diagnoses and telediagnoses were compared with the gold standard of histological diagnosis. Results: the most frequent lesions were basal cell carcinoma (33.3%), actinic keratosis (19.4%), and nevus (13.9%). Kappa coefficient for the diagnosis of malignant lesion showed agreement between the two tele-evaluators in the conventional digital camera images (0.68) and in the smartphone images (0.78). The face-to-face examiner’s accuracy was of 94.4%; the tele-evaluators’ accuracy in the conventional digital camera images was of 83.3% and in the smartphone images varied from 80.6% to 86.1%. Comparing the in-person diagnoses with the telediagnoses (obtained by evaluating conventional digital camera images or smartphone images), there was no significant difference in the hit rates. Conclusion: for eyelid tumor telediagnosis, images obtained using smartphone camera were equivalent to those obtained using conventional digital camera.

摘要 研究目的：对比常规数码相机图像与智能手机图像在眼睑肿瘤诊断中的准确率。研究方法：2016年1月至2017年7月，共纳入36例患者，接受面对面外部评估与生物显微镜检查以确立临床诊断。使用佳能（Canon）PowerShot SX530 HS数码相机（16.8百万像素）与三星（Samsung）GALAXY S4智能手机摄像头拍摄病变部位。所有病变均被切除并送检组织病理学检查。将术前图像发送给两位眼睑疾病专科医师进行远程分析。将面对面诊断与远程诊断的数据与组织学诊断金标准进行对比。研究结果：最常见的病变类型为基底细胞癌（33.3%）、光化性角化病（19.4%）与痣（13.9%）。恶性病变诊断的Kappa系数（Kappa coefficient）显示，两位远程评估者在常规数码相机图像组的一致性评分为0.68，在智能手机图像组为0.78。面对面检查者的诊断准确率为94.4%；常规数码相机图像远程评估的准确率为83.3%，智能手机图像远程评估的准确率区间为80.6%至86.1%。将面对面诊断与通过常规数码相机图像或智能手机图像获得的远程诊断进行对比，两组的诊断命中率无显著差异。研究结论：对于眼睑肿瘤远程诊断而言，智能手机摄像头拍摄的图像与常规数码相机拍摄的图像诊断效果相当。