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A small photon intensity element used to subdivide an intensity-modulated beam for intensity distribution optimisation or dose calculations treatment planning
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.


Also referred to as a bixel; a small photon intensity element used to subdivide an IMRT beam for the purpose of treatment calculation for radiation therapy.
Synonym(s): bixel.
[beam + -let, dim. suffix]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Salari, "Beamlet Transform-based technique for pavement crack detection and classification," Computer-Aided Civil and Infrastructure Engineering, vol.
The course of the laser beam requires that it exit the Beamlet facility and penetrate the tee wall precisely in order to enter the Z-Accelerator facility.
Lawrence Livermore National Laboratory originally built the Beamlet laser to serve as the scientific prototype of the National Ignition Facility.
An effective way to do this, which overcomes space charge limits, is to produce these high current beams by merging a large number of high-current beamlets.
With IMRT it is now possible to vary dose intensity using thousands of radiation beamlets and "paint" an irregularly shaped target with radiation while sculpting the dose to avoid adjacent organs.
Parallel-scan, microlaser-based, direct-write displays employ a scan architecture in which multiple beamlets of light are modulated and then scanned in parallel.
The grids create thousands of exhaust beamlets as the ions pass through the screens.
This source is rotating in a helical pattern around the patient, while the intensity of beam is modulated according to the tumor shape using "tungsten leaves." These leaves create thousands of beam elements, called "beamlets" [2].