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IsoRay Medical > Cesium-131 benefits > Product Details


brachyguru
What are the clinical benefits of Cesium-131 ?
Please explain the benefits of CS-131 over other commonly used radio-isotopes


Asked on: Wed Jun 10 18:43:44 PDT 2009
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brachyguru

Select as best answer		Answered at: Wed Jun 10 18:44:30 PDT 2009

Compare the clinical benefits of Cesium-131:
 

Cesium-131 has a higher energy and shorter half-life* than either Iodine-125 or Palladium-103. Early data suggests these characteristics can be attributed to Cesium-131's tolerability and relatively rapid resolution of commonly seen urinary side effects.ยน

  
 
Isotope Half-Life Energy 90% Delivered Total Radiation to tumor
Cesium-131 9.7 days 30.4 Kev 33 days 115 Gy
Palladium-103 17 days 20.8 Kev 58 days 125 Gy
Iodine-125 60 days 28.5 Kev 204 days 145 Gy


 
  1. Prestidge B.R., Bice W.S., Jurkovic I., et al. Cesium-131 Permanent Prostate Brachytherapy: An Initial Report. Int. J. Radiation Oncology Biol. Phys. 2005; 63 (1): 5336-5337.

  2. Chen, Z., Dose rate constant of a Cesium-131 interstitial brachytherapy seed measured by thermoluminescent dosimetry and gamma-ray spectrometry: Medical Physics. 32 (11), November 2005.
* Compared to other isotopes commonly used in permanent seed brachytherapy for prostate cancer
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