MOSFET Dosimeters

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Description
Specifications

Three different styles of MOSFET dosimeters are available, as shown in the table under Specifications. With each of these dosimeters there are also options that can be selected. All of our dosimeters have the same unique features:

One calibration factor for all photon & electron modalities in the radiotherapy energy range.
Isotropic (± 3% or better for 360°.)
Active region of 0.2 x 0.2 mm
Permits pinpoint measurement without patient shielding.
Dose-rate and temperature independent.
Unobtrusive in procedures.
Lightweight and flexible.
Multiple dosimeter capability with one reader.

Dosimeter	Width of Flex	Length of Flex	Thickness of Flex	Common Use
Standard MOSFET	2.5 mm	200 mm	0.3 mm	Dose verification during radiotherapy treatments; beam QA
microMOSFET	1.0 mm	375 mm	0.3 mm	Fits down a 6Fr catheter for dose verification during HDR brachytherapy procedures
Linear 5ive Array	1.5 mm	460 mm	1.3 mm	Measurement of urethral dose during prostate brachytherapy procedures

Options	Use
High Sensitivity	These dosimeters are made more sensitive to radiation. Standard dosimeters in standard bias (all readers have two bias settings: std and high) have a nominal sensitivity of 1 mV/cGy. High sensitivity dosimeters in standard bias have 3 mV/cGy, while high sensitivity dosimeters used in high bias will yield a nominal sensitivity of 9 mV/cGy.
Reinforcement	Dosimeters can be reinforced to increase strength and durability.
Radiopaque Marker	A marker can be placed on the end of the dosimeters to make them visible during imaging (e.g. CT)