Intra-operative ultrasound-based augmented reality guidance for laparoscopic surgery

Healthcare Technology Letters

article

Rohit Singla¹  Philip Edgcumbe²  Philip Pratt³  Christopher Nguan⁴  Robert Rohling¹ 

[1] Department of Electrical and Computer Engineering, University of British Columbia;MD/PhD Program, University of British Columbia;Department of Surgery and Cancer, Imperial College London;Department of Urological Sciences, University of British Columbia;Department of Mechanical Engineering, University of British Columbia

关键词: biomedical ultrasonics;    surgery;    kidney;    augmented reality;    medical robotics;    tumours;    cancer;    calibration;    healthy parenchymal tissue;    registration error;    robot-to-camera calibration;    robot-assisted partial nephrectomies;    tumour excision;    single navigation aid;    surgical instrument tracking;    kidney;    endophytic tumour;    laparoscopic surgery;    intra-operative ultrasound-based augmented reality guidance;   

DOI  :  10.1049/htl.2017.0063

学科分类：肠胃与肝脏病学

来源: Wiley

【 摘 要 】

In laparoscopic surgery, the surgeon must operate with a limited field of view and reduced depth perception. This makes spatial understanding of critical structures difficult, such as an endophytic tumour in a partial nephrectomy. Such tumours yield a high complication rate of 47%, and excising them increases the risk of cutting into the kidney's collecting system. To overcome these challenges, an augmented reality guidance system is proposed. Using intra-operative ultrasound, a single navigation aid, and surgical instrument tracking, four augmentations of guidance information are provided during tumour excision. Qualitative and quantitative system benefits are measured in simulated robot-assisted partial nephrectomies. Robot-to-camera calibration achieved a total registration error of 1.0 ± 0.4 mm while the total system error is 2.5 ± 0.5 mm. The system significantly reduced healthy tissue excised from an average (±standard deviation) of 30.6 ± 5.5 to 17.5 ± 2.4 cm 3 ( p < 0.05) and reduced the depth from the tumor underside to cut from an average (±standard deviation) of 10.2 ± 4.1 to 3.3 ± 2.3 mm ( p < 0.05). Further evaluation is required in vivo, but the system has promising potential to reduce the amount of healthy parenchymal tissue excised.

【 授权许可】

CC BY|CC BY-ND|CC BY-NC|CC BY-NC-ND