ISORAD™ is the only available cylindrical (isotropic) diode detector. The ISORAD’s cylindrical design allows it to have nearly zero angular dependence along the axial axis, this makes it an ideal choice for tangential treatment cases where it is difficult to predict angle of incidence. ISORAD’s are available in three photon energy ranges. Each energy range uses a different buildup material designed to give a reading at dmax, therefore, no additional buildup is required. ISORAD - Angular Independent Dose Monitoring.
ISORAD Applications
  • A situation where a surface mounted diode is needed to verify patient dose.
  • Tangential treatments where the angle of incidence is difficult or impossible to predict.
  • Can be used in conjunction with some solid phantoms and the IVD™ to verify complex treatment plans.

ISORAD Energy Ranges

ISORAD detectors are offered in three photon energy ranges. A single energy compensted detector is also offered.

Accuracy

The ISORAD offers exceptional accuracy for a flat diode detector. When tested on top of 6 cm of virtual water, variation in directional response is +/- 0.5% for 30°, and +/- 1.0% for 45° for 6MV beams.

Axial Directional Response on Phantom:


For a technical comparison against the MOSFET detector, click here.

Features

  • ISORAD is the only available diode with Cylindrical Symmetry, angular corrections are not required.
  • Compatibility with any diode based dosimetry system.
  • Very good reproducibility (= 1% for measurements >1 cGy)
  • Long lifetime when handled properly

Product Options