Determination of the Absorbed Dose Rate to Water for the 18-mm Helmet of a Gamma Knife

Purpose To measure the absorbed dose rate to water of60 Co gamma rays of a Gamma Knife Model C using water-filled phantoms (WFP). Methods and Materials Spherical WFP with an equivalent water depth of 5, 7, 8, and 9 cm were constructed. The dose rates at the center of an 18-mm helmet were measured in...

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Veröffentlicht in:	International journal of radiation oncology, biology, physics biology, physics, 2011-04, Vol.79 (5), p.1580-1587
Hauptverfasser:	Chung, Hyun-Tai, Ph.D, Park, Youngho, Ph.D, Hyun, Sangil, Ph.D, Choi, Yongsoo, Ph.D, Kim, Gi Hong, M.Sc, Kim, Dong Gyu, M.D., Ph.D, Chun, Kook Jin, Ph.D
Format:	Artikel
Sprache:	eng
Schlagworte:	Absorbed dose to water Absorption Air Algorithms Applied radiobiology (equipment, dosimetry...) ATTENUATION Beam quality factor BEAMS BETA DECAY RADIOISOTOPES BETA-MINUS DECAY RADIOISOTOPES Biological and medical sciences Biological effects of radiation Calibration - standards COBALT 60 COBALT ISOTOPES Cobalt Radioisotopes - therapeutic use CORRECTIONS Displacement correction DOSE RATES DOSES ELECTROMAGNETIC RADIATION Equipment Design - standards ERRORS Fundamental and applied biological sciences. Psychology Gamma Knife GAMMA RADIATION Gamma Rays Head Protective Devices - standards Hematology, Oncology and Palliative Medicine HYDROGEN COMPOUNDS INTERMEDIATE MASS NUCLEI INTERNAL CONVERSION RADIOISOTOPES IONIZING RADIATIONS ISOMERIC TRANSITION ISOTOPES ISOTOPES MATERIALS MEDICINE MINUTES LIVING RADIOISOTOPES MOCKUP Models, Anatomic Monte Carlo Method NUCLEAR MEDICINE NUCLEI ODD-ODD NUCLEI ORGANIC COMPOUNDS ORGANIC POLYMERS OXYGEN COMPOUNDS PETROCHEMICALS PETROLEUM PRODUCTS PHANTOMS Phantoms, Imaging PHOTON BEAMS PLASTICS POLYMERS RADIATION DOSES Radiation Equipment and Supplies - standards RADIATIONS RADIOISOTOPES RADIOLOGY RADIOLOGY AND NUCLEAR MEDICINE Radiometry - methods Radiosurgery - instrumentation Radiosurgery - methods RADIOTHERAPY Radiotherapy Dosage Reference Standards STRUCTURAL MODELS SURGERY SYNTHETIC MATERIALS THERAPY Tissues, organs and organisms biophysics Uncertainty WATER Water-filled phantom YEARS LIVING RADIOISOTOPES
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