Urology Research & Practice
ENDOUROLOGY - Original Article

Three-Dimensional Reconstruction of Pelvicalyceal System of the Kidney Based on Native CT Images Are 1-Step Away from the Use of Contrast Agent


Department of Urology, North-Western State Medical University named after I. I. Mechnikov, Saint Petersburg, Russia


Urology Center with robotassisted surgery of the Mariinsky Hospital Saint Petersburg, Russia


Department of Urology, Uro-Oncology, Robot-Assisted and Reconstructive Surgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany


Department of Urology, University Hospital Basel, Basel, Switzerland


Peter the Great St. Petersburg Polytechnic University, Saint Petersburg, Russia

Urol Res Pract 2022; 48: 130-135
DOI: 10.5152/tud.2022.21329
Read: 724 Downloads: 290 Published: 01 March 2022

Objective: To describe special algorithm for the semi-autonomous 3-dimensional reconstruction of the pelvicalyceal system based on native computed tomography images of patients with upper urinary tract obstruction.

Materials and Methods: Fifty patients with renal colic fitting to inclusion criteria were enrolled. All patients underwent computed tomography urography to perform 3-dimensional reconstruction of the pelvicalyceal system on the affected size based on excretory phase representing “gold standard” and on native phase, which was performed via Medical Imaging Interaction Toolkit program updated with the described algorithm. Five urologists estimated their similarities and the potential use of non-contrast models for interventional planning. Contralateral non-distended pelvicalyceal system was reconstructed to evaluate the viability of the proposed technology in such cases. Surface areas of contrast and non-contrast models were compared. Distended pelvicalyceal system of 1 patient was used to reconstruct virtual endoscopic view. Obtained 3-dimensional noncontrast pelvicalyceal system models were analyzed by an engineer for suitability for 3-dimensional printing.

Results: The average surface area of contrast and non-contrast models was 3513 and 3371 mm2 , respectively (P=.0818). Non-contrast 3-dimensional reconstruction was possible with all distended pelvicalyceal systems and with 9 non-distended cases. Properties of non-contrast models were estimated as 4.3 out of 5. Obtained models were suitable for their intraluminal reconstruction and potential 3-dimensional printing.

Conclusion: Described semi-autonomous approach allows for 3-dimensional reconstruction of dilated pelvicalyceal system based on non-contrast computed tomography images.

Cite this article as: Guliev B, Talyshinskii A, Akbarov I, Chukanov V, Vasilyev P. Three-dimensional reconstruction of pelvicalyceal system of the kidney based on native CT images are 1-step away from the use of contrast agents. Turk J Urol. 2022;48(2):130-135.

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