ISSN: 2581-5407
Global Journal of Cancer Therapy
Short Communication       Open Access      Peer-Reviewed

Photodynamic therapy in a pleural cavity using monte carlo simulations with 2D/3D Graphical Visualization

Beeson K1, Parilov E1, Mary Potasek1*, Zhu T2, Sun H2 and Sourvanos D3

1Simphotek, Inc, 211 Warren St, Newark, NJ 07103, USA
2Perlman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
3Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
*Corresponding author: Dr Mary Potasek, Simphotek, Inc, 211 Warren St, Newark, NJ 07103, USA, Tel: 609-802-1429; E-mail:
Received: 17 September, 2022 | Accepted: 28 September, 2022 | Published: 29 March, 2022

Cite this as

Beeson K, Parilov E, Potasek M, Zhu T, Sun H, et al. (2022) Photodynamic therapy in a pleural cavity using monte carlo simulations with 2D/3D Graphical Visualization. Glob J Cancer Ther 8(1): 034-035. DOI: 10.17352/2581-5407.000045

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© 2022 Beeson K, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Cancer therapy using Photodynamic Therapy (PDT) has been investigated for some time [1,2] and now it is a growing area of interest in clinical trials [3]. Monte Carlo (MC) simulations were used for early laboratory studies [4,5] for analysis in PDT. Various improvements in the MC method have advanced the field in recent years. For example, Yassine, et. al. [6] have optimized PDT with custom cylindrical diffusers; Cassidy, [7] have developed a robust MC method; whereas, Fang and Yan [8] and Young-Schultz et. al. [9] ported MC to Compute Unified Device Architecture (CUDA) that run on Graphics Processing Units (GPU). To date, there is a lack of very fast (a few minutes or less) computational methods for treatment planning in the clinic. Simphotek (Stk) [10-12] and other references in [13], including references therein, have developed various MC-based methods that can simulate the light fluence in PDT in near real-time.

The Perlman School of Medicine (PSM) has investigated PDT in the pleural lung cavity of several patients in a Photofrin-mediated study [14] and developed an IR navigation system for clinical use [15,16]. The analysis of the PDT dose data for 19 patients has been published recently [3]. However, due to the large surface area of the pleural lung cavity, a series of multiple stationary light sources is needed. PSM is currently developing an 8-detector system for treatment in the pleural cavity. While multiple fixed detectors can be used for dosimetry at a few locations, an accurate simulation of light fluence and fluence rate is still needed over the entire cavity. This makes it difficult for treating physicians to visualize the multiple light fluence/fluence rate simulations. As a the result, Stk extended its GPU-based MC simulation tool, as a part of Dosie™ simulation software, for modeling the light transport in intracavity PDT (icav-PDT) to include a dose-cavity visualization that allows a user to inspect the dose maps in real-time over the treated cavity in 3D.

As being a part of an emerging PDT Explicit Dosimetry System (PEDSy), the performance of this new Stk’s CUDA-based implementation, called PEDSy-MC, has been demonstrated on a life-size lung-shaped custom-printed phantom for testing the icav-PDT navigation system at the PSM [15,16]. Fluence calculations completed in under a minute (for some cases) or within minutes have been achieved [17]. In addition, results within a 5% error of the analytic solution for multiple detectors in the phantom were accomplished. Research supported by [18].

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