IMRT 2018

Output factors for small fields

Use of ionization chamber (large air cavity) for measurement of dose in IMRT field: up to 10% deviation Measurement of output factors difficult for small field sizes

Martens, PMB45, 2000. The value of the PinPoint ion chamber for characterization of small field segments used in intensity-modulated radiotherapy

Haryanto PMB47, 2002. Investigation of photon beam output factors for conformal radiation therapy—Monte Carlo simulations and measurements

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