Detector-specific correction factors in radiosurgery beams and their impact on dose distribution calculations

PloS One
Olivia A García-GarduñoJosé Manuel Lárraga-Gutiérrez

Abstract

Silicon-diode-based detectors are commonly used for the dosimetry of small radiotherapy beams due to their relatively small volumes and high sensitivity to ionizing radiation. Nevertheless, silicon-diode-based detectors tend to over-respond in small fields because of their high density relative to water. For that reason, detector-specific beam correction factors ([Formula: see text]) have been recommended not only to correct the total scatter factors but also to correct the tissue maximum and off-axis ratios. However, the application of [Formula: see text] to in-depth and off-axis locations has not been studied. The goal of this work is to address the impact of the correction factors on the calculated dose distribution in static non-conventional photon beams (specifically, in stereotactic radiosurgery with circular collimators). To achieve this goal, the total scatter factors, tissue maximum, and off-axis ratios were measured with a stereotactic field diode for 4.0-, 10.0-, and 20.0-mm circular collimators. The irradiation was performed with a Novalis® linear accelerator using a 6-MV photon beam. The detector-specific correction factors were calculated and applied to the experimental dosimetry data for in-depth and off-axis loc...Continue Reading

References

Jan 1, 1996·Physics in Medicine and Biology·M HeydarianA H Beddoe
Jun 1, 1997·International Journal of Radiation Oncology, Biology, Physics·J C FlickingerL D Lunsford
Jun 3, 1998·Medical Physics·D A LowJ A Purdy
Jul 28, 2007·Medical Physics·Otto A Sauer, Jürgen Wilbert
Aug 23, 2007·Journal of Applied Clinical Medical Physics·Benjamin E Nelms, Jeff A Simon
Nov 7, 2007·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Carolyn McKerracher, David I Thwaites
Nov 7, 2007·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Carolyn McKerracher, David I Thwaites
Dec 7, 2007·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Carolyn McKerracher, David I Thwaites
Feb 26, 2008·Medical Physics·Indra J DasAnders Ahnesjö
Dec 17, 2008·Medical Physics·R AlfonsoS Vatnitsky
Apr 10, 2010·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Olivia A García-GarduñoMiguel A Celis
Nov 22, 2013·Journal of Applied Clinical Medical Physics·Karina P Esparza-MorenoMiguel A Celis-Lopez
Dec 3, 2014·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Paul Z Y LiuDavid R McKenzie

❮ Previous
Next ❯

Methods Mentioned

BETA
chip

Software Mentioned

DOSRZnrc
DoseLab
Novalis LINAC
DOSXYZnrc
iPlan RT TPS
CONESTACK
Novalis
BEAMnrc

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology
Paul Z Y LiuDavid R McKenzie
Cancer radiothérapie : journal de la Société française de radiothérapie oncologique
J P ManensP Piret
Australasian Physical & Engineering Sciences in Medicine
A Haworth, A M Perry
© 2022 Meta ULC. All rights reserved