Application of virtual cystoscopy based on ultra-thin slice thickness multi-parameter magneticresonance imaging in surgical classification of non-muscle invasive bladder cancer
Application of virtual cystoscopy based on ultra-thin slice thickness multi-parameter magneticresonance imaging in surgical classification of non-muscle invasive bladder cancer
Objective To explore the value of three-dimensional reconstruction based on ultra-thin slice thickness multi-parameter magnetic resonance imaging as a preoperative virtual cystoscopy in the surgery management of patients with non-muscle invasive bladder cancer.Methods The medical records and corresponding basic characteristics of three patients with non-muscle invasive bladder cancer from July to August 2020 were collected retrospectively.All patients underwent ultra-thin magnetic resonance perfusion imaging before surgery.After the patient's informed consent was obtained,the examination data were collected.The 3D interactive medical image control system Mimics was used to reconstruct the image,and a high-precision virtual cystoscopy model was applied to the preoperative planning for en-bloc operation.Results All the 3 operations were completed successfully,and the operation time were 20,55,and 60 minutes,respectively.Besides,the post-operative pathological reports showed that the incisal margin was negative,and there were no com-plications of Clavien-Dindo Ⅱ grade or above in all 3 patients during the perioperative period.All these 3 patients were discharged from hospital within 2-7 days after operation.One case was high-grade urothelial cancer and regularly received intravesical BCG instillation one month after operation.The other two cases were low-risk non-muscle invasive bladder cancer and regularly received intra-vesical gemcitabine or shapelin instillation after operation.So far,there was no recurrence in all three patients under regular follow-up.Conclusions High precision virtual cystoscopy based on ultra-thin magnetic resonance perfusion imaging has some clinical significance in pre-segmentation and reducing operative time in patients with non-muscle in-vasive bladder cancer.However,there needs more prospective cohort studies to explore whether the application of high preci-sion virtual cystoscopy contributes to reducing the post-surgery recurrence rate in patients with non-muscle invasive bladder cancer.
关键词
虚拟膀胱镜/非肌层浸润性膀胱癌/多参数磁共振/激光切除术/并发症
Key words
Virtual cystoscopy/Non-muscle invasive bladder cancer/Multi-parameter magnetic resonance imaging/En-bloc/Complications
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