Assessment of variation in Elekta® plastic spherical-calibration phantom and its impact on the Leksell Gamma Knife® calibration

Purpose: Traditionally, the dose-rate calibration (output) of the Leksell Gamma Knife® (LGK) unit is performed using a 160 mm diameter plastic spherical phantom provided by the vendor of the LGK, Elekta Instrument AB. The purpose of this study was to evaluate variations in the Elekta spherical phant...

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Veröffentlicht in:	Medical physics (Lancaster) 2010-09, Vol.37 (9), p.5066-5071
Hauptverfasser:	Novotny, Josef, Bhatnagar, Jagdish P., Chung, Hyun-Tai, Johansson, Jonas, Bednarz, Greg, Ma, Lijun, Saiful Huq, M.
Format:	Artikel
Sprache:	eng
Schlagworte:	60 APPLIED LIFE SCIENCES Acrylic Resins Butadienes CALIBRATION calibration phantoms Collimators DENSITY Density measurement Diamond DOSE RATES Dose‐volume analysis dosimetric measurements DOSIMETRY Dosimetry/exposure assessment Ionization chambers IRRADIATION Leksell Gamma Knife Mass measurement PHANTOMS Phantoms, Imaging PLASTICS Polystyrenes Radiation Dosage RADIATION PROTECTION AND DOSIMETRY radiation therapy Radiation therapy equipment Radiography RADIOLOGY AND NUCLEAR MEDICINE radiosurgery Radiosurgery - instrumentation RADIOTHERAPY Silicon detectors small field dosimetry Stereotactic radiosurgery SURGERY Therapeutic applications, including brachytherapy Thermoluminescent dosimeters
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