Implantable MOSFET detectors: evaluation of a new design

Medical Physics
T M BriereA S Beddar

Abstract

The authors have studied the performance of a new version of the implantable MOSFET detector designed for clinical use. Detectors were irradiated under 6- and 18-MV beams in water at body temperature to the calibration dose of 200 cGy/fraction for 20 daily fractions to determine their response and reproducibility. Additional measurements were performed in a solid phantom under 6-MV irradiation at room temperature to daily doses of 100, 150, 200, 250, 400 and 600 cGy/ fraction. Finally, the angular dependence with respect to rotation about the detector's longitudinal axis was studied. At body temperature, the detectors were found to have an average response within +/- 3% of the calibration dose with a standard deviation of 2% or less. At room temperature, doses lower than the calibration dose led to a slight overresponse while doses higher than the calibration dose led to a slight underresponse. Angular dependence was not significant, on average within 1.2% of the mean. When used as specified by the manufacturer, these detectors should provide data useful to verify the delivered dose for external beam radiation therapy within a certain tolerance.

References

Oct 19, 2004·Medical Physics·Charles W ScarantinoRobert D Black
Feb 18, 2005·Physics in Medicine and Biology·A S BeddarM T Gillin
Feb 22, 2005·Medical Physics·Per H Halvorsen
Apr 9, 2005·International Journal of Radiation Oncology, Biology, Physics·Serge MarciéJean-Pierre Gérard
May 14, 2005·International Journal of Radiation Oncology, Biology, Physics·Charles W ScarantinoRobert D Black
Jul 15, 2005·Medical Physics·Paolo ScalchiPriyadarshini Rajaguru
Aug 23, 2005·International Journal of Radiation Oncology, Biology, Physics·Robert D BlackBenjamin E Nelms
Oct 4, 2005·International Journal of Radiation Oncology, Biology, Physics·Rita ConsortiMarcello Benassi
Dec 8, 2005·Physics in Medicine and Biology·S BestN Suchowerska
Dec 20, 2005·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Mario CioccaRoberto Orecchia
Dec 24, 2005·Medical Physics·Tina Marie BriereMichael T Gillin
May 30, 2007·Journal of Applied Clinical Medical Physics·Raj VaradhanMichael Weber

❮ Previous
Next ❯

Citations

Jul 5, 2013·Medical Physics·Ben MijnheerChester Reft
Feb 19, 2009·Journal of Applied Clinical Medical Physics·Stephen F KryMohammad Salehpour
Nov 26, 2008·Expert Review of Medical Devices·Charles W Scarantino, Gloria P Beyer
Jul 1, 2020·Physics in Medicine and Biology·Anatoly B RozenfeldVladimir Feygelman
Jan 30, 2009·Medical Physics·Jessica M FagerstromLarry A DeWerd

❮ 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.