Detector density and small field dosimetry: Integral versus point dose measurement schemes

Medical Physics - Tập 40 Số 8 - Trang 082102 - 2013
Tracy Underwood1, Hannah Winter2, Mark A. Hill1, John D. Fenwick3
1CRUK/MRC Gray Institute for Radiation Oncology and Biology, Department of Oncology,University of Oxford, ORCRB Roosevelt Drive, Oxford, OX3 7DQ,United Kingdom
2Oxford Cancer Centre, Oxford University Hospitals NHS Trust,Headington, Oxford OX3 7LE, United Kingdom
3Department of Oncology, University of Oxford, ORCRBRoosevelt Drive, Oxford, OX3 7DQ, United Kingdom

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Tài liệu tham khảo

Andreo, 2000, Absorbed dose determination in external beam radiotherapy

Almond, 1999, AAPM's TG-51 protocol for clinical reference dosimetry of high-energy photon and electron beams, Med. Phys., 26, 1847, 10.1118/1.598691

Alfonso, 2008, A new formalism for reference dosimetry of small and nonstandard fields, Med. Phys., 35, 5179, 10.1118/1.3005481

Pantelis, 2012, On the output factor measurements of the cyberknife iris collimator small fields: Experimental determination of the kQclin,Qmsrfclin,fmsr correction factors for microchamber and diode detectors, Med. Phys., 39, 4875, 10.1118/1.4736810

Francescon, 2011, Calculation of kQclin,Qmsrfclin,fmsr for several small detectors and for two linear accelerators using Monte Carlo simulations, Med. Phys., 38, 6513, 10.1118/1.3660770

Sterpin, 2012, Monte Carlo computed machine-specific correction factors for reference dosimetry of TomoTherapy static beam for several ion chambers, Med. Phys., 39, 4066, 10.1118/1.4722752

Cranmer-Sargison, 2012, Monte carlo modelling of diode detectors for small field mv photon dosimetry: Detector model simplification and the sensitivity of correction factors to source parameterization, Phys. Med. Biol., 57, 5141, 10.1088/0031-9155/57/16/5141

Francescon, 2012, Monte Carlo simulated correction factors for machine specific reference field dose calibration and output factor measurement using fixed and iris collimators on the CyberKnife system, Phys. Med. Biol., 57, 3741, 10.1088/0031-9155/57/12/3741

Scott, 2012, Characterizing the influence of detector density on dosimeter response in non-equilibrium small photon fields, Phys. Med. Biol., 57, 4461, 10.1088/0031-9155/57/14/4461

Bouchard, 2004, Ionization chamber-based reference dosimetry of intensity modulated radiation beams, Med. Phys., 31, 2454, 10.1118/1.1781333

Gonzalez-Castano, 2012, A convolution model for obtaining the response of an ionization chamber in static non standard fields, Med. Phys., 39, 482, 10.1118/1.3666777

Djouguela, 2006, The dose-area product, a new parameter for the dosimetry of narrow photon beams, Z. Med. Phys., 16, 217, 10.1078/0939-3889-00317

Fan, 2009, Determination of output factors for stereotactic radiosurgery beams, Med. Phys., 36, 5292, 10.1118/1.3232217

Hundertmark, 2011, A robust procedure for verifying tomotherapy hi-art source models for small fields, Phys. Med. Biol., 56, 3685, 10.1088/0031-9155/56/12/015

Chung, 2010, Investigation of three radiation detectors for accurate measurement of absorbed dose in nonstandard fields, Med. Phys., 37, 2404, 10.1118/1.3392247

Rogers, 2011, BEAMnrc users manual

Walters, 2005, DOSXYZnrc users manual

Wulff, 2008, Efficiency improvements for ion chamber calculations in high energy photon beams, Med. Phys., 35, 1328, 10.1118/1.2874554

1984, Stopping powers for electrons and positrons

Bouchard, 2009, Ionization chamber gradient effects in nonstandard beam configurations, Med. Phys., 36, 4654, 10.1118/1.3213518

Kawrakow, 2006, EGSnrcMP: The multi-platform environment for EGSnrc

http://physics.nist.gov/PhysRefData/Star/Text/ESTAR.html

Coles, 2006, The IMPORT trials are launched (September 2006), Clin. Oncol., 18, 587, 10.1016/j.clon.2006.07.010

Low, 1998, A technique for the quantitative evaluation of dose distributions, Med. Phys., 25, 656, 10.1118/1.598248

Crop, 2009, The influence of small field sizes, penumbra, spot size and measurement depth on perturbation factors for microionization chambers, Phys. Med. Biol., 54, 2951, 10.1088/0031-9155/54/9/024

Lacroix, 2011, Extraction of depth-dependent perturbation factors for silicon diodes using a plastic scintillation detector, Med. Phys., 38, 5441, 10.1118/1.3637496

Sánchez-Doblado, 2007, A new method for output factor determination in mlc shaped narrow beams, Phys. Medica, 23, 58, 10.1016/j.ejmp.2007.03.002