CAMRT EXAM QUESTIONS WITH
COMPLETE SOLUTION
Question : You receive a req on a 1yr old who is Dx with
Talipes equinovarus. What body part should you expect to x- ray?
CORRECT ANSWER : Feet
Question : What formula is used to calculate mAs when SID
has been altered?
CORRECT ANSW ER: Old mAs/new mAs = old SID
squared/new SID squared
Question : When doing single contrast barium enemas, what
is the predominant type of electron interaction occurring in the patient?
CORRECT ANSWER : Photoelectric
Question : What is an advantage of CT over conventional
radiography?
CORRECT ANSWER : Improved soft tissue differentiation
Question : Absorbed dose. Which is the most radiosensitive
portion of the cell cycle?
CORRECT ANSWER : Mitosis
Question : Millie is a tech. What is the maximum annual
permissible whole body dose that can be registered on her OSL?
CORRECT ANSWER : 20mSv
Question : What is the term used to describe breaks in
chromosomes?
CORRECT ANSWER : Aberrations
Question : In digital imaging, what is the relationship between
the matrix and spatial resolution?
CORRECT ANSWER : Direct
Question : What OID is required to optimize the air gap
technique?
CORRECT ANSWER : 10-15cm
Question : 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? a.Barium enema done 2 days ago b. IVP done earlier that day c.Endoscopy without biopsy done 1hr ago d. CT chest booked immediately following
CORRECT ANSWER : a. Barium enema done 2 days ago
Question : 100cm SID changes to 120cm SID, original mAs
was 5mAs. What is the new mAs?
CORRECT ANSWER : 7.2
Question : Need to do a femur series on a 17 year old female.
When asked if she could be pregnant she says "I don't know i might be". What do you do?
CORRECT ANSWER : Determine if pt is in the 10-day
period after onset of menstruation
Question : An elderly woman unable to lay on her back or
stand needs lumbar spine x-rays. Besides a routine lateral, what view should you consider?
CORRECT ANSWER : Lateral decub with AP horizontal
beam
Question : What should be included in an image looking for
ulcerative colitis?
CORRECT ANSWER : Rectosigmoid area
Question : T2/3 is at what level?
CORRECT ANSWER : Sternal notch
Question : In an indirect capture digital unit, what is the
function of the scintillation phosphor coating on a photodiode?
CORRECT ANSWER : Cesium iodide is used to convert x-
rays to light