Evaluation of RayStation's delivered dose and accumulated dose features for spine stereotactic radiotherapy

Marissa Joyce Vaccarelli; Shane Paul Krafft; Tina Marie Briere; Stina Svensson; Eun Young Han

doi:10.1016/j.meddos.2022.09.001

Evaluation of RayStation's delivered dose and accumulated dose features for spine stereotactic radiotherapy

Marissa Joyce Vaccarelli, Shane Paul Krafft, Tina Marie Briere, Stina Svensson, Eun Young Han

Radiation Physics

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

We investigated delivered dose and dose accumulation features in the dose tracking module of RayStation version 11B before potential integration into the spine stereotactic radiosurgery (SSRS) program at our institution. End-to-end testing with a rigid Rando phantom was performed, and 10 retrospective clinical cases were selected for evaluation. Pre-treatment cone beam CTs (pCBCT) were corrected for Hounsfield unit (HU) integrity and contours were rigidly copied from the reference plan. We then calculated the delivered dose to the corrected cone beam CT (cCBCT). A deformable image registration (DIR) was generated between cCBCT and reference planning CT (rCT) using controlling region of interests. Deformed delivered dose to the rCT was summed to generate the accumulated dose for multiple fractions. The end-to-end tests of the phantom study revealed an improvement of cCBCT HU information by > 100 HU compared to the pCBCT. When compared to the reference plan, the delivered dose and deformed delivered dose were within 1.0% for the GTV and CTV and 3.0% for the spinal cord, respectively. Nearly all 10 clinical cases demonstrated delivered dose and accumulated dose deviations < 3.0% from the reference plan. However, 2 patients rendered delivered dose deviations between 3.0% and 4.0%, showing the effectiveness of the module. The dose tracking module in RayStation version 11B could potentially be utilized to aid clinical decision-making for external body shape change or positional deviation in SSRS for rigid target and critical structures. Evaluation before clinical application under one's specific practice is required, and results must be carefully analyzed specially near the high dose gradient area.

Original language	English (US)
Pages (from-to)	1-7
Number of pages	7
Journal	Medical Dosimetry
Volume	48
Issue number	1
DOIs	https://doi.org/10.1016/j.meddos.2022.09.001
State	Published - Mar 1 2023

Keywords

Adaptive radiotherapy
Dose accumulation
Stereotactic radiosurgery

ASJC Scopus subject areas

Radiological and Ultrasound Technology
Oncology
Radiology Nuclear Medicine and imaging

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10.1016/j.meddos.2022.09.001

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title = "Evaluation of RayStation's delivered dose and accumulated dose features for spine stereotactic radiotherapy",

abstract = "We investigated delivered dose and dose accumulation features in the dose tracking module of RayStation version 11B before potential integration into the spine stereotactic radiosurgery (SSRS) program at our institution. End-to-end testing with a rigid Rando phantom was performed, and 10 retrospective clinical cases were selected for evaluation. Pre-treatment cone beam CTs (pCBCT) were corrected for Hounsfield unit (HU) integrity and contours were rigidly copied from the reference plan. We then calculated the delivered dose to the corrected cone beam CT (cCBCT). A deformable image registration (DIR) was generated between cCBCT and reference planning CT (rCT) using controlling region of interests. Deformed delivered dose to the rCT was summed to generate the accumulated dose for multiple fractions. The end-to-end tests of the phantom study revealed an improvement of cCBCT HU information by > 100 HU compared to the pCBCT. When compared to the reference plan, the delivered dose and deformed delivered dose were within 1.0% for the GTV and CTV and 3.0% for the spinal cord, respectively. Nearly all 10 clinical cases demonstrated delivered dose and accumulated dose deviations < 3.0% from the reference plan. However, 2 patients rendered delivered dose deviations between 3.0% and 4.0%, showing the effectiveness of the module. The dose tracking module in RayStation version 11B could potentially be utilized to aid clinical decision-making for external body shape change or positional deviation in SSRS for rigid target and critical structures. Evaluation before clinical application under one's specific practice is required, and results must be carefully analyzed specially near the high dose gradient area.",

keywords = "Adaptive radiotherapy, Dose accumulation, Stereotactic radiosurgery",

author = "Vaccarelli, {Marissa Joyce} and Krafft, {Shane Paul} and Briere, {Tina Marie} and Stina Svensson and Han, {Eun Young}",

note = "Funding Information: No external sources of funding. This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors. Portions of this work were accepted as 2022 AAPM Spring Clinical Meeting Abstract; New Orleans, LA, USA. Publisher Copyright: {\textcopyright} 2022",

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doi = "10.1016/j.meddos.2022.09.001",

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AU - Vaccarelli, Marissa Joyce

AU - Krafft, Shane Paul

AU - Briere, Tina Marie

AU - Svensson, Stina

AU - Han, Eun Young

N1 - Funding Information: No external sources of funding. This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors. Portions of this work were accepted as 2022 AAPM Spring Clinical Meeting Abstract; New Orleans, LA, USA. Publisher Copyright: © 2022

PY - 2023/3/1

Y1 - 2023/3/1

N2 - We investigated delivered dose and dose accumulation features in the dose tracking module of RayStation version 11B before potential integration into the spine stereotactic radiosurgery (SSRS) program at our institution. End-to-end testing with a rigid Rando phantom was performed, and 10 retrospective clinical cases were selected for evaluation. Pre-treatment cone beam CTs (pCBCT) were corrected for Hounsfield unit (HU) integrity and contours were rigidly copied from the reference plan. We then calculated the delivered dose to the corrected cone beam CT (cCBCT). A deformable image registration (DIR) was generated between cCBCT and reference planning CT (rCT) using controlling region of interests. Deformed delivered dose to the rCT was summed to generate the accumulated dose for multiple fractions. The end-to-end tests of the phantom study revealed an improvement of cCBCT HU information by > 100 HU compared to the pCBCT. When compared to the reference plan, the delivered dose and deformed delivered dose were within 1.0% for the GTV and CTV and 3.0% for the spinal cord, respectively. Nearly all 10 clinical cases demonstrated delivered dose and accumulated dose deviations < 3.0% from the reference plan. However, 2 patients rendered delivered dose deviations between 3.0% and 4.0%, showing the effectiveness of the module. The dose tracking module in RayStation version 11B could potentially be utilized to aid clinical decision-making for external body shape change or positional deviation in SSRS for rigid target and critical structures. Evaluation before clinical application under one's specific practice is required, and results must be carefully analyzed specially near the high dose gradient area.

AB - We investigated delivered dose and dose accumulation features in the dose tracking module of RayStation version 11B before potential integration into the spine stereotactic radiosurgery (SSRS) program at our institution. End-to-end testing with a rigid Rando phantom was performed, and 10 retrospective clinical cases were selected for evaluation. Pre-treatment cone beam CTs (pCBCT) were corrected for Hounsfield unit (HU) integrity and contours were rigidly copied from the reference plan. We then calculated the delivered dose to the corrected cone beam CT (cCBCT). A deformable image registration (DIR) was generated between cCBCT and reference planning CT (rCT) using controlling region of interests. Deformed delivered dose to the rCT was summed to generate the accumulated dose for multiple fractions. The end-to-end tests of the phantom study revealed an improvement of cCBCT HU information by > 100 HU compared to the pCBCT. When compared to the reference plan, the delivered dose and deformed delivered dose were within 1.0% for the GTV and CTV and 3.0% for the spinal cord, respectively. Nearly all 10 clinical cases demonstrated delivered dose and accumulated dose deviations < 3.0% from the reference plan. However, 2 patients rendered delivered dose deviations between 3.0% and 4.0%, showing the effectiveness of the module. The dose tracking module in RayStation version 11B could potentially be utilized to aid clinical decision-making for external body shape change or positional deviation in SSRS for rigid target and critical structures. Evaluation before clinical application under one's specific practice is required, and results must be carefully analyzed specially near the high dose gradient area.

KW - Adaptive radiotherapy

KW - Dose accumulation

KW - Stereotactic radiosurgery

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JO - Medical Dosimetry

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Evaluation of RayStation's delivered dose and accumulated dose features for spine stereotactic radiotherapy

Abstract

Keywords

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