Page 88 - ARNM-2-4

Advances in Radiotherapy &

Nuclear Medicine

SHORT COMMUNICATION
Dose prescription and reporting in stereotactic

radiosurgery: A single institutional study

Egor Borzov* , Raquel Bar-Deroma , Salem Billan , and Tomer Charas
Department of Radiotherapy, Division of Oncology, Rambam Health Care Campus, Haifa, Israel

Abstract

Stereotactic body radiotherapy and stereotactic radiosurgery are advanced
radiotherapy techniques used to treat a variety of malignancies with high precision.
However, there is significant variability in dose prescription and delivery, which
may impact treatment consistency and efficacy. This work presents an analysis of
retrospective dosimetric data collected from 300 stereotactic body radiotherapy/
stereotactic radiosurgery (SBRT/SRS) clinical treatment plans. The study evaluated
the dosimetric variability across different disease sites, including lung, brain, prostate,
pelvis, liver, and bone, as well as among individual treatment planning strategies.
Parameters analyzed included D 0.1cc , D , D , D , homogeneity index, and conformity
99
95
50
index. The results showed that, despite variations in tumor types and planning
approaches, a standardized protocol at our institution helped minimize dosimetric
variability. These data may facilitate interinstitutional comparisons and help to enrich
the SBRT/SRS data pool for treatment standardization.

*Corresponding author: Keywords: Stereotactic body radiotherapy; Stereotactic radiosurgery; Dose prescription;
Egor Borzov
(e_borzov@rambam.health.gov.il) Dose reporting
Citation: Borzov E,
Bar-Deroma R, Billan S, Charas T.
Dose prescription and reporting in
stereotactic radiosurgery: A single 1. Introduction
institutional study. Adv Radiother
Nucl Med. 2024;2(4):5450. Stereotactic body radiotherapy (SBRT) and stereotactic radiosurgery (SRS) are advanced
doi: 10.36922/arnm.5450 hypofractionated radiotherapy techniques that typically involve 1 – 6 treatment fractions.
Received: October 23, 2024 These methodologies are employed across various clinical contexts, notably in treating
Accepted: November 26, 2024 malignancies in the lung, prostate, brain, liver, and other sites. With technological
advancements continuing to emerge, the precision of SBRT/SRS has significantly
Published Online: December 10,
2024 improved, achieving submillimeter accuracy in both positioning and delivery. This
level of precision is achieved through the integration of patient immobilization devices,
Copyright: © 2024 Author(s).
This is an Open-Access article pre- and intra-treatment imaging guidance, and high-definition collimators that shape
distributed under the terms of the radiation beams to conform tightly to tumor volumes.
Creative Commons Attribution
License, permitting distribution, Despite these advancements, one of the most critical parameters influencing
and reproduction in any medium, treatment outcomes – radiation dose – remains insufficiently standardized. Variability
provided the original work is
properly cited. in the prescription, reporting, and delivery of doses across institutions, raises significant
concerns regarding treatment consistency and efficacy. 1
Publisher’s Note: AccScience
Publishing remains neutral with Issues related to dose prescription in SBRT/SRS treatments have been widely
regard to jurisdictional claims in 2
published maps and institutional discussed previously in the literature. Prior studies have highlighted inconsistencies
affiliations in dose delivery and reporting, raising concerns about the uniformity of treatment

Volume 2 Issue 4 (2024) 1 doi: 10.36922/arnm.5450