Abstract

Introduction: We present the original computer product “Volga-M” for the forming 3D model of kidney to conduct preoperative planning surgery and the initial clinical studies of using intra operative navigation during laparoscopic partial nephrectomy.

Materials and methods: Virtual model was formed using the software, based on the mathematical models of the structural elements of the body we accepted a law of probability distribution of the brightness values. When using augmented reality technology, we combined the 3D model image with the video of kidney tumor. Laparoscopic partial nephrectomy performed in 9 patients, 4 (44.4%) men and 5 (55.6%) women middle age 45.9 (38-54) years, with clear cell renal cell carcinoma size 26.2 (15-40) mm.

Results: All procedures were successful, segmental vascular clip was possible in 7 (53.8%) cases. Mean warm ischemia was 17.3 (12-25) min. Mean surgery operation time was 101.7 (80-155) minutes. Blood loss was an average of 222.2 (100-400) ml.

Conclusion: Preliminary results of our clinical studies have shown the significance of 3D modeling to improve visualization of the affected organ during surgery for the surgeon and for understanding of the nature of the pathological process of the patient.

Keywords: Laparoscopic urology; Virtual modeling; Augmented reality; Intraoperative navigation

Abbreviations: LPN: Laparoscopic Partial Nephrectomy; CT: Computer Tomography