Radiation Safety


ALARA - As Low As Reasonably Achievable2

The use of radiation for beneficial purposes in medical procedures is a major contributor to improved human health. However, the benefits of treatment need to be balanced with the risks of radiation exposure. Radiation protection knowledge is of paramount importance for interventionalists. An understanding of radiation safety principles and their application in pactice is also critical for all oncology nurses.4

ALARA is a radiation safety principle of keeping unnecessary radiation exposure and release of radioactive materials to the environment as low as can be achieved by employing all reasonable methods.1

ALARA is also a regulatory requirement for all radiation safety programs.

ALARA is based on the assumption that exposure to radiation of any dose increases the probability of detrimental biological effects such as genetic mutations and cancer.

ALARA can be achieved using three key factors:


1. Time

Reducing exposure time reduces radiation risk


Doubling the distance reduces radiation exposure four-fold


Shielding material absorbs radiation between the source and the individual

The TheraSphere dose vial and the Administration Accessory kit are designed with ALARA in mind to reduce radiation exposure to both healthcare professionals and patients to ‘As Low As Reasonably Achievable’ levels.

Ready to Use Dose vial minimises radiation exposure to staff with accuracy traceable to NIST standards. There is no risk of contamination from transfer of microspheres as the container is the administration vial.3

Quick and Easy Administration with an infusion time of less than five minutes, requiring no fluoroscopy or contrast during administration.3

Learn more about how TheraSphere conforms to ALARA

The βETA™ Program


The βETA™ program has been designed to reduce the risk of radiation exposure when performing selective internal radiation therapy (SIRT) by increasing awareness of radiation safety and providing risk education. The βETA™ educational program has been developed by BTG following feedback from an expert multidisciplinary consensus panel working in medical radiological environments.

βETA™ strives to:

  • Increase understanding and awarness of potential radiation exposure when performing SIRT with Y90 glass microspheres and provide risk education
  • Share expert advice on best practice for all steps of the  Y90 microsphere procedure
  • Offer an educational initiative to help train others regarding the potential risk of exposure to radiation and ways to reduce  this risk
  • Provide audit tools to enable staff to undertake simple  measures for assessing current staff performance and exposure to radiaiton, allowing improvements to be made in reducing environmental exposure.

Click here to visit the βETA™ Program
1United States Regulatory Commission (U.S. NRC). Measuring Radiation. http://www.nrc.gov/about-nrc/radiation/health-effects/measuring-radiation.html. Updated Friday, June 28, 2013; accessed July 22, 2014.
2McGhee S, Data on file, July 18, 2014.
3Adapted from Brateman L, 1999. Brateman L. Radiation safety considerations for diagnostic radiology personnel. Radiographics. 1999 Jul-Aug;19(4):1037-55.
4Package Insert – TheraSphere™ Yttrium-90 Glass Microspheres Rev.14

ALARA = As Low As Reasonably Achievable