Lab Report 23 - LabReport23:IMRTPatientSpecificQA...

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Lab Report 23:  IMRT Patient Specific QA Jared Meharg PHYS 6993 Instructor:  Dr. Podder 4/12/2011
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I. Introduction Intensity modulated radiation therapy (IMRT) is a modality involving  non-uniform  fluence delivery to the patient at various beam angles in order to optimize the overall  dose distribution.  IMRT can be thought of as multiple fields within one treatment beam.  The treatment planning system divides each beam into a large number of beamlets and  determines the optimum setting of their weighted value.  The optimization process is  unique to IMRT planning, and involves inverse planning to satisfy predefined dose  distribution criteria.  This step is performed using a computer optimization algorithm to  automatically determine beam parameters. Previously, an IMRT plan was created for a prostate cancer patient.  In this lab, patient  specific QA was performed to verify proper agreement between the calculated dose  from the planning system and the measured dose delivered to a solid water phantom. II.
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This note was uploaded on 01/21/2012 for the course PHYS 6720 taught by Professor Hu during the Spring '10 term at East Carolina University .

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Lab Report 23 - LabReport23:IMRTPatientSpecificQA...

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