(167) 3D Penile Reconstruction Imaging in Complex Peyronie’s Disease (PD): Proof of Concept Study

Abstract

Abstract Introduction The evaluation of penile deformity in PD is a critical step in therapeutic decision making and is generally the main outcome in PD clinical trials. 3D reconstruction is becoming increasingly common in the medical field, with highly accurate and long term accessible images. To date, there is no widely accepted 3D documentation protocol for penile deformity. Objective To evaluate the feasibility of 3D imaging and its accuracy in quantifying penile deformity. Methods Video images captured intraoperatively during saline-induced rigid erection were acquired from 4 PD patients undergoing penile surgery. Penile curvature measurements were obtained by the surgeon with a goniometer. Video images were obtained with an iPhone 11 (Apple Inc, Cupertino, CA) camera in full HD or 4k resolution, traveling in a circular 360o motion around the penile shaft. Video images were analysed by a team with 3D expertise using the open source software Blender (Blender Foundation, Amsterdan, NE) and its addon OrtogonBlender, and 3D reconstructed images were created. The 3D team performed curvature measurements using the software tools. A non-concordance magnitude was defined as a measurement difference (between physician measurement and 3D image) of 20% or 10o, whichever was smaller. Results The 3D reconstruction was possible in all cases and all videos used took <1 minute to be captured. Images of 4 patients, 3 with bi-planar curvature, were obtained and therefore 7 measurements were available for caparison. The 3D images quality was good and volume loss deformities were visible. Measurements generated from those reconstructed images showed excellent concordance (100%, N=7 - Table 1). An example of curvature measurement in a 3D model is presented in Figure 1. Conclusions In this pilot study, deformity analysis and measurement with tolerable error was performed using video images acquired quickly intraoperatively, with a smartphone. With further development, this strategy may contribute to a more objective follow up of complex PD cases, as those with biplanar curvature or volume loss deformities. Disclosure No