Recent Posts
MDPhysics - A Medical Physics Blog
Return To Blog Listing
A blog on medical physics with a job board, searchable funding opportunities database and a calendar of upcoming events for medical physicists/medical physics students.
Recent Posts Tagged With abr practice exam questions
-
Calculating Polarity Correction Factor
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
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
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...

