Recent Posts Tagged With abr practice exam questions

• Calculating Polarity Correction Factor

  Posted on Tuesday December 29th, 2009 at 02:40 am in board certification dosimetry abr practice exam questions

  AAPM’s TG-51 protocol for clinical reference dosimetry of high-energy photon and electron beams contains many details to which we should pay close attention when performing necessary measurements for the calibration of high-energy beams. One su...

• ABR Practice Exam Question 6 - D90/V100 Prostate Seed Implant

  Posted on Sunday August 30th, 2009 at 09:22 pm in board certification abr practice exam questions

  From a post-plan CT following a prostate seed implant, a physicist reported that D90 is equal to 80% of the prescribed dose and V100 is 95. What does he means by that statement? 1- The minimum dose to 90% of the target volume is equal to 80% of presc...

• ABR Practice Exam Question 5 - Cesium-131 Brachytherapy

  Posted on Wednesday August 26th, 2009 at 10:36 pm in board certification abr practice exam questions

  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 correc...