Linear 5ive MOSFET Array

Dosimeter

The Linear 5ive MOSFET Array for Radiotherapy applications is ideal for LDR/HDR Brachytherapy and IMRT QA.  It is compatible with the mobileMOSFET.  The Array contains five isotropic, energy independent MOSFET dosimeters at 2cm intervals.  The MOSFETs on the array can be read simultaneously, facilitating multiple dose measurements at several spatial points.  The radio-opaque marker, located at the tip of the array, enables visualization under X-ray imaging including CT and Fluoroscopy, allowing for 5 dosimetry points to be accurately located and easily compared to the target doses.

The isotropic Linear 5ive Array, with excellent reproducibility and linearity, is the tool of choice for a variety of radiotherapy applications such as in-vivo dosimetry and Beam Quality Assurance.

The array can be used effectively for direct measurement of intracavitary dose profiles.  During gynecological and prostate procedures, five dose points can be read directly from a computer, displaying the dose profile of the organ at risk in real-time.  This is then compared to the planned target dose, allowing for immediate assessments of post-implant base and apex dose, as well as the dose to the organs at risk (eg. urethra, rectum or bladder).

Two arrays crossing at the isocenter of a beam will provide quick 2D dose profiling with 10 simultaneous dose point readings for the X and Y-axes.  Since arrays are isotropic, multiple beams at different gantry angles (as in IMRT) can be accurately and quickly compared.

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