ABR Practice Exam Question 5 – Cesium-131 Brachytherapy

August 26, 2009 · Written by MDPhysics.com · mdphysicsblog@gmail.com

Which of these statements is/are correct regarding a Cesium-131 brachytherapy source?

1- It emits gamma rays with a peak energy of 662 KeV.

2- Its half-value layer is around 5.5 mm lead.

3- Its half-life is 9.7 days.

4- Statements 1 and 2 are correct only.

5- None of the statements are correct.

Click here for the answer to ABR Practice Exam Question 5.


5 Responses to “ABR Practice Exam Question 5 – Cesium-131 Brachytherapy”

  1. Jens on August 28th, 2009 1:33 pm

    This is good practice questions. However, they seem quite focused on therapeutic radiology (radiation therapy) which makes me wonder if the questions are for part 2 exam and not the general physics (part 1) exam. Does anyone know?

  2. ARSH on August 29th, 2009 7:54 pm

    You are correct Jens. These are typical ABR therapy questions (2nd part written). Generally part 1 of the ABR exam covers some basic (elementary) topics on nuclear medicine, diagnostic physics, therapy physics, radiation safety, shielding, instrumentation and biology. Hope we get some sample questions for part 1 and part 2 of diagnostic physics in this blog. The questions seem challenging ones!

  3. Blair Bentley on October 9th, 2009 9:47 pm

    Hey everyone, I am trying to figure out what I should be studying to get ready for part one of the Radiation Oncology Physics test next year. Do you have any suggestions? I know part one is more general than part 2 and thats what concerns me.
    any info would be appreciated.

  4. Chuck Giomuso on January 11th, 2010 7:25 pm

    I am wondering if there is a good review course for parts 1 and 2 of ABR exam with a concentration in nuclear medicine. I am taking the exam August 2010 and could use a refresher.

  5. MDPhysics.com on January 25th, 2010 10:17 pm

    Chuck, Good question. I’ll check around. If I hear of such a course, I will certainly post the info. In the meanwhile, you can always start your prep with a good text. Check out “Physics in Nuclear Medicine” by Simon Cherry et al.

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