Latest ABR Final Exam Questions And Answers Package

The exact HU value of an object may vary substantially depending on the kVp a CT scan is obtained with. True or False? - ANS True Partial Volume artifacts for CT images can be reduced by decreasing ________ image matrix, kVp, section thickness, or acquisition time ? - ANS section th...

Rate the body systems in order of decreasing radio-sensitivity. - ANS 1. Hematopoietic, Reproductive (2-5 Gy) 2. Skin, cornea, lens of eyes, GI organs (10 Gy) 3. Bone and cartilage 4. Lungs, kidneys, Liver, Pancreas 5. Muscle, brain, nerves, spinal cord (20 Gy) a. What are the compo...

The Curie temperature is the temperature at which? - ANS Ferromagnetism is lost What value is required to convert dose in a gas chamber to dose in the medium? - ANS Mass stopping power ratio Laplacian operator, ^2 is? - ANS -_- Mutation doubling dose for humans is __ Gy...

Dmax of 6MeV - ANS 1.3 cm Dmax of 9MeV - ANS 2.2 cm Dmax of 12MeV - ANS 2.8 cm Dmax of 15MeV - ANS 3.4 cm Dmax of 18MeV - ANS 1.8 cm Why is there no Bragg peak for electrons? - ANS At the end of the track, the stopping power goes way up, but t...

Roentgen to cGy - ANS 1 R = 0.876 cGy in air 1 R = 0.97 cGy in tissue For I-125 1 R = 0.886 cGy in tissue Units of air KERMA strength - ANS U = cGy x cm^2 / hr Radiation Units Ladder - ANS Activity -> Exposure -> Dose -> Equivalent Dose Radiation wei...

ABR Board Review Questions And Answers What is the cumulative DAP for fluoro studies? - ANS Depends on study time: Baseline, XR: 1 mGy*cm^2 GI/GU: 20-30 Gy*cm^2 median IR: ~200 Gy*cm^2 high IR (spine): 600 Gy*cm^2 What is the effective dose for fluoro studies? - ANS ...

ABR EXAM 2024 QUESTIONS WITH COMPLETE SOLUTIONS!! In order for a block to have as little penumbra as possible, what must be the requirements of the block? - ANS The block edge must be diverging In treatment planning, which factor takes into account the effects of the flatteni...