Fast MCsquare-Based Independent Dose Verification Platform for Pencil Beam Scanning Proton Therapy

Purpose: To commission MCsquare (a multi-cores CPU-based dose calculation engine) for pencil beam scanning (PBS) proton therapy, integrate it into RayStation treatment plan system (TPS) to create a dedicated platform for fast independent dose verification. Method: A MCsquare-based independent dose v...

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Main Authors: Chunbo Liu, Meng Wei Ho, Jiyeon Park, Wen Chien Hsi, Xiaoying Liang, Zuofeng Li, Yuntao Song, Hansheng Feng, Yawei Zhang
Format: Article
Language:English
Published: SAGE Publishing 2021-07-01
Series:Technology in Cancer Research & Treatment
Online Access:https://doi.org/10.1177/15330338211033076
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author Chunbo Liu
Meng Wei Ho
Jiyeon Park
Wen Chien Hsi
Xiaoying Liang
Zuofeng Li
Yuntao Song
Hansheng Feng
Yawei Zhang
author_facet Chunbo Liu
Meng Wei Ho
Jiyeon Park
Wen Chien Hsi
Xiaoying Liang
Zuofeng Li
Yuntao Song
Hansheng Feng
Yawei Zhang
author_sort Chunbo Liu
collection DOAJ
description Purpose: To commission MCsquare (a multi-cores CPU-based dose calculation engine) for pencil beam scanning (PBS) proton therapy, integrate it into RayStation treatment plan system (TPS) to create a dedicated platform for fast independent dose verification. Method: A MCsquare-based independent dose verification platform (MC2InRS) was developed to realize automatic dose re-calculation for clinical use, including data preparation, dose calculation, 2D/3D gamma analysis. MCsquare was commissioned based on in-air lateral dose profiles, integrated depth dose, and the absolute dose of different beam energies for Proteus ® ONE. MC2InRS was validated with measurement data using various targets and depths in a water phantom. This study also investigated 15 clinical cases to demonstrate the feasibility and effectiveness of MC2InRS platform in clinic practice. Results: Between simulation and measurement, the distal range differences at 80% (R80) and 20% (R20) dose levels for each energy were below 0.05 mm, and 0.1 mm, respectively, and the absolute dose differences were below 0.5%. 29 out of 36 QA planes reached a 100% gamma passing rate (GPR) for 2%/2mm criteria, and a minimum of 98.3% gamma was obtained in water phantom between simulation and measurement. For the 15 clinical cases investigated, the average 2D GPR (2%/2mm) was 95.4%, 99.3% for MCsquare vs. measurement, MCsquare vs. TPS, respectively. The average 3D GPR (2%/2mm) was 98.9%, 95.3% for MCsquare vs. TPS in water, and computed tomography (CT), respectively. Conclusion: MC2InRS, a fast, independent dose verification platform, has been developed to perform dose verification with high accuracy and efficiency for Pencil Bream Scanning (PBS). Its potential to be applied in routine clinical practice has also been discussed.
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spelling doaj.art-c18db61bfa0e4f19be7eb4ea8be2aaa12022-12-21T22:25:03ZengSAGE PublishingTechnology in Cancer Research & Treatment1533-03382021-07-012010.1177/15330338211033076Fast MCsquare-Based Independent Dose Verification Platform for Pencil Beam Scanning Proton TherapyChunbo Liu0Meng Wei Ho1Jiyeon Park2Wen Chien Hsi3Xiaoying Liang4Zuofeng Li5Yuntao Song6Hansheng Feng7Yawei Zhang8 , Jacksonville, FL, USA Department of Radiation Oncology, University of Florida, Gainesville, FL, USA Department of Radiation Oncology, University of Florida, Gainesville, FL, USA Department of Radiation Oncology, University of Florida, Gainesville, FL, USA Department of Radiation Oncology, University of Florida, Gainesville, FL, USA Department of Radiation Oncology, University of Florida, Gainesville, FL, USA , Chinese Academy of Sciences, Hefei, Anhui, China , Chinese Academy of Sciences, Hefei, Anhui, China Department of Radiation Oncology, University of Florida, Gainesville, FL, USAPurpose: To commission MCsquare (a multi-cores CPU-based dose calculation engine) for pencil beam scanning (PBS) proton therapy, integrate it into RayStation treatment plan system (TPS) to create a dedicated platform for fast independent dose verification. Method: A MCsquare-based independent dose verification platform (MC2InRS) was developed to realize automatic dose re-calculation for clinical use, including data preparation, dose calculation, 2D/3D gamma analysis. MCsquare was commissioned based on in-air lateral dose profiles, integrated depth dose, and the absolute dose of different beam energies for Proteus ® ONE. MC2InRS was validated with measurement data using various targets and depths in a water phantom. This study also investigated 15 clinical cases to demonstrate the feasibility and effectiveness of MC2InRS platform in clinic practice. Results: Between simulation and measurement, the distal range differences at 80% (R80) and 20% (R20) dose levels for each energy were below 0.05 mm, and 0.1 mm, respectively, and the absolute dose differences were below 0.5%. 29 out of 36 QA planes reached a 100% gamma passing rate (GPR) for 2%/2mm criteria, and a minimum of 98.3% gamma was obtained in water phantom between simulation and measurement. For the 15 clinical cases investigated, the average 2D GPR (2%/2mm) was 95.4%, 99.3% for MCsquare vs. measurement, MCsquare vs. TPS, respectively. The average 3D GPR (2%/2mm) was 98.9%, 95.3% for MCsquare vs. TPS in water, and computed tomography (CT), respectively. Conclusion: MC2InRS, a fast, independent dose verification platform, has been developed to perform dose verification with high accuracy and efficiency for Pencil Bream Scanning (PBS). Its potential to be applied in routine clinical practice has also been discussed.https://doi.org/10.1177/15330338211033076
spellingShingle Chunbo Liu
Meng Wei Ho
Jiyeon Park
Wen Chien Hsi
Xiaoying Liang
Zuofeng Li
Yuntao Song
Hansheng Feng
Yawei Zhang
Fast MCsquare-Based Independent Dose Verification Platform for Pencil Beam Scanning Proton Therapy
Technology in Cancer Research & Treatment
title Fast MCsquare-Based Independent Dose Verification Platform for Pencil Beam Scanning Proton Therapy
title_full Fast MCsquare-Based Independent Dose Verification Platform for Pencil Beam Scanning Proton Therapy
title_fullStr Fast MCsquare-Based Independent Dose Verification Platform for Pencil Beam Scanning Proton Therapy
title_full_unstemmed Fast MCsquare-Based Independent Dose Verification Platform for Pencil Beam Scanning Proton Therapy
title_short Fast MCsquare-Based Independent Dose Verification Platform for Pencil Beam Scanning Proton Therapy
title_sort fast mcsquare based independent dose verification platform for pencil beam scanning proton therapy
url https://doi.org/10.1177/15330338211033076
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