Yazgan Cisel, Fitoz Suat, Atasoy Cetin, Turkolmez Kadir, Yagci Cemil, Akyar Serdar
Department of Radiology, Ankara University Medical Faculty, Ibni-Sina Hospital 06100 Sihhiye, Ankara, Turkey.
Clin Imaging. 2004 Mar-Apr;28(2):138-42. doi: 10.1016/S0899-7071(03)00117-7.
The objective of this study was to investigate the value of contrast material-filled virtual cystoscopy in the detection of bladder tumors.
Thirty-nine patients who had recent diagnosis or were followed up due to priory history of bladder tumor underwent virtual cystoscopy. After the intravenous injection of contrast medium, the bladder was examined with helical computed tomography (CT) scan. The data were transferred to a workstation for interactive navigation using surface rendering. Two radiologists independently interpreted the axial and virtual images, and discrepancies were resolved by consensus. The results of virtual cystoscopy were compared with the findings of conventional cystoscopy.
Forty-nine of 54 bladder lesions detected with conventional cystoscopy in 33 patients were also shown on virtual images. On virtual cystoscopy, three of the seven lesions 5 mm or smaller in diameter could be identified. There were no false-positive findings. The sensitivity of the technique was 96.2% for polypoid tumors and 88.9% for sessile lesions. When axial and virtual images were evaluated together, the sensitivity rate increased to 94.4%.
Bladder tumors can be diagnosed noninvasively using contrast medium-filled virtual cystoscopy. Evaluation of both the axial and virtual images increases the sensitivity of the technique.
本研究的目的是探讨造影剂充盈的虚拟膀胱镜检查在膀胱肿瘤检测中的价值。
39例近期诊断或因既往膀胱肿瘤病史接受随访的患者接受了虚拟膀胱镜检查。静脉注射造影剂后，用螺旋计算机断层扫描（CT）对膀胱进行检查。数据被传输到工作站，使用表面渲染进行交互式导航。两名放射科医生独立解读轴向图像和虚拟图像，分歧通过协商解决。将虚拟膀胱镜检查的结果与传统膀胱镜检查的结果进行比较。
33例患者经传统膀胱镜检查发现的54个膀胱病变中有49个也在虚拟图像上显示。在虚拟膀胱镜检查中，7个直径5毫米或更小的病变中有3个可以被识别。没有假阳性结果。该技术对息肉样肿瘤的敏感性为96.2%，对无蒂病变的敏感性为88.9%。当同时评估轴向图像和虚拟图像时，敏感率提高到94.4%。
使用造影剂充盈的虚拟膀胱镜检查可以无创诊断膀胱肿瘤。同时评估轴向图像和虚拟图像可提高该技术的敏感性。
