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 The Linear 5ive MOSFET Array is ideal for LDR / HDR Brachytherapy and IMRT QA.
Dynamic dose feedback is critical in determining the quality of all brachytherapy procedures. In HDR, it allows for corrective planning of dose fractions, whereas in LDR it enables the assessment of the quality of the seed implant program. Further real-time, in vivo dose monitoring allows the physician to monitor the dose to critical organs such as the urethra and rectum during brachytherapy procedures. In fact, this has become so important that the American Brachytherapy Society (ABS) recently issued brachytherapy dosimetry recommendations with the following statement:
Ideally, one should strive for on-line, real-time intraoperative dosimetry to allow for adjustment in seed placement to achieve the intended dose [1,2].
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 (CT, Fluoroscopy), allowing for five dosimetry points to be accurately located and easily compared to target doses.
Features
• Suitable for in-vivo dosimetry and beam QA
• For use in both electron and photon modalities
• Isotropic response for 360° gantry angles
• Dose rate and energy independent
• Visible under CT or Fluoroscopy imaging
• Waterproof, resistant to body fluids and liquid sterilization
• Small, lightweight, flexible, and rugged for extensive handling
Compatibility
• mobileMOSFET Dose Verification System
• AutoSense Dose Verification System & Dual Bias Supply for Linear 5ive MOSFET Array
• Not compatible with MOSFET 20 Dose Verification System
Radiation Characteristics
• 20,000 mV lifetime (~20,000 cGy on standard sensitivity setting)
• Five active detection points (0.04 mm2 each)
• Suitable for photon and electron modalities
• Isotropic response (±3% for 360°)
• Temperature independent
• Visible under CT or Fluoroscopy with a radio-opaque tungsten marker at the tip.
Additional Applications
• IMRT IGRT, IORT, QA and In vivo
• Rectal Dose Measurements
• Skin Dosimetry
• Beam Profiling
• Fluoroscopy / CT Dose Verification
• External beam radiotherapy / TBI
Dimensions
1.5 mm W x 46 cm L x 1.3 mm T
2 cm Inter-MOSFET Spacing
[1]-S. Nag, W. Bice, K. DeWyngaert, et al. “The American Brachytherapy Society recommendations for permanent prostate brachytherapy post-implant dosimetric analysis”.Int J. Radiat. Oncol. Biol. Phys.,46, 221-230, (2000)
[2]-S. Nag, J.P. Ciezki, R. Cormack, et al. “Intraoperative planning and evaluation pf permanent prostate brachytherapy: report of the American Brachytherapy Society”.Int J. Radiat. Oncol. Biol. Phys., 51,1422-1430 (2001)
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