CAMRT Practice Exam 1 Questions & Answers!!

You receive a req on a 1yr old who is Dx with Talipes equinovarus. What body part should you expect to x-ray? - ANSWER Feet What formula is used to calculate mAs when SID has been altered? - ANSWER Old mAs/new mAs = old SID squared/new SID squared When doing single contrast barium enemas, what is the predominant type of electron interaction occurring in the patient? - ANSWER Photoelectric What is an advantage of CT over conventional radiography? - ANSWER Improved soft tissue differentiation Absorbed dose. Which is the most radiosensitive portion of the cell cycle? - ANSWER Mitosis Millie is a tech. What is the maximum annual permissible whole body dose that can be registered on her OSL? - ANSWER 20mSv What is the term used to describe breaks in chromosomes? - ANSWER Aberrations In digital imaging, what is the relationship between the matrix and spatial resolution? - ANSWER Direct What OID is required to optimize the air gap technique? - ANSWER 10-15cm When reviewing previous images from a patient having a barium meal study, which exam would it be most important to bring to the attention of the radiologist? - ANSWER *a. Barium enema done 2 days ago