Tomotherapy dose distribution verification using MAGIC-f polymer gel dosimetry

Medical Physics
J F PavoniOswaldo Baffa

Abstract

This paper presents the application of MAGIC-f gel in a three-dimensional dose distribution measurement and its ability to accurately measure the dose distribution from a tomotherapy unit. A prostate intensity-modulated radiation therapy (IMRT) irradiation was simulated in the gel phantom and the treatment was delivered by a TomoTherapy equipment. Dose distribution was evaluated by the R2 distribution measured in magnetic resonance imaging. A high similarity was found by overlapping of isodoses of the dose distribution measured with the gel and expected by the treatment planning system (TPS). Another analysis was done by comparing the relative absorbed dose profiles in the measured and in the expected dose distributions extracted along indicated lines of the volume and the results were also in agreement. The gamma index analysis was also applied to the data and a high pass rate was achieved (88.4% for analysis using 3%∕3 mm and of 96.5% using 4%∕4 mm). The real three-dimensional analysis compared the dose-volume histograms measured for the planning volumes and expected by the treatment planning, being the results also in good agreement by the overlapping of the curves. These results show that MAGIC-f gel is a promise for tridim...Continue Reading

References

Mar 1, 1997·Medical Physics·J N YangB R Thomadsen
Jun 3, 1998·Medical Physics·D A LowJ A Purdy
Dec 30, 1998·Physics in Medicine and Biology·C BaldockG A George
Mar 17, 1999·Medical Physics·J P BalogD Pearson
Apr 10, 1999·Seminars in Radiation Oncology·T R MackieM Mehta
Oct 26, 1999·Physics in Medicine and Biology·E PappasL Vlachos
Jan 22, 2000·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Y De DeeneW De Neve
Sep 29, 2000·Physics in Medicine and Biology·M HiltsA Jirasek
Dec 1, 2000·Physics in Medicine and Biology·P S MurphyS Webb
Jun 5, 2002·Physics in Medicine and Biology·Melissa L MatherClive Baldock
May 22, 2003·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Koen VergoteCarlos De Wagter
Jul 11, 2003·Medical Physics·John BalogRobert Jeraj
Oct 25, 2003·International Journal of Radiation Oncology, Biology, Physics·Wim DuthoyWilfried De Neve
Jan 10, 2004·Medical Physics·John BalogJeff Kapatoes
Jul 28, 2004·International Journal of Radiation Oncology, Biology, Physics·Panagiotis SandilosLampros Vlahos
Aug 3, 2004·Physics in Medicine and Biology·J D FenwickB R Paliwal
Feb 12, 2008·Physics in Medicine and Biology·Juliana Polezze FernandesOswaldo Baffa
Feb 13, 2010·Physics in Medicine and Biology·C BaldockL J Schreiner
Aug 4, 2010·Physics in Medicine and Biology·Sofie CebergSven A J Bäck

❮ Previous
Next ❯

Citations

Aug 10, 2013·Medical Physics·Yoichi Watanabe, Yuji Nakaguchi
Jan 22, 2017·Physica Medica : PM : an International Journal Devoted to the Applications of Physics to Medicine and Biology : Official Journal of the Italian Association of Biomedical Physics (AIFB)·M A SilveiraO Baffa
Jan 18, 2014·Physics in Medicine and Biology·A Jirasek, M Hilts
Jan 14, 2021·Physica Medica : PM : an International Journal Devoted to the Applications of Physics to Medicine and Biology : Official Journal of the Italian Association of Biomedical Physics (AIFB)·Jéssica Caroline LizarJuliana Fernandes Pavoni

❮ Previous
Next ❯

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.