CAMRT Practice Exam 1 questions
and answers
Feet - correct answer ✔✔ You receive a req on a 1yr old who is Dx with Talipes equinovarus.
What body part should you expect to x-ray?
Old mAs/new mAs = old SID squared/new SID squared - correct answer ✔✔ What formula is
used to calculate mAs when SID has been altered?
Photoelectric - correct answer ✔✔ When doing single contrast barium enemas, what is the
predominant type of electron interaction occurring in the patient?
Improved soft tissue differentiation - correct answer ✔✔ What is an advantage of CT over
conventional radiography?
Mitosis - correct answer ✔✔ Absorbed dose. Which is the most radiosensitive portion of the
cell cycle?
20mSv - correct answer ✔✔ Millie is a tech. What is the maximum annual permissible whole
body dose that can be registered on her OSL?
Aberrations - correct answer ✔✔ What is the term used to describe breaks in chromosomes?
Direct - correct answer ✔✔ In digital imaging, what is the relationship between the matrix and
spatial resolution?
10-15cm - correct answer ✔✔ What OID is required to optimize the air gap technique?
, *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 ✔✔ 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?
7.2 - correct answer ✔✔ 100cm SID changes to 120cm SID, original mAs was 5mAs. What is the
new mAs?
Determine if pt is in the 10-day period after onset of menstruation - correct answer ✔✔ 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?
Lateral decub with AP horizontal beam - correct answer ✔✔ 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?
Rectosigmoid area - correct answer ✔✔ What should be included in an image looking for
ulcerative colitis?
Sternal notch - correct answer ✔✔ T2/3 is at what level?
Cesium iodide is used to convert x-rays to light - correct answer ✔✔ In an indirect capture
digital unit, what is the function of the scintillation phosphor coating on a photodiode?
As kV increases, the HVL decreases - correct answer ✔✔ What is the relationship between the
kV and half value layer?
and answers
Feet - correct answer ✔✔ You receive a req on a 1yr old who is Dx with Talipes equinovarus.
What body part should you expect to x-ray?
Old mAs/new mAs = old SID squared/new SID squared - correct answer ✔✔ What formula is
used to calculate mAs when SID has been altered?
Photoelectric - correct answer ✔✔ When doing single contrast barium enemas, what is the
predominant type of electron interaction occurring in the patient?
Improved soft tissue differentiation - correct answer ✔✔ What is an advantage of CT over
conventional radiography?
Mitosis - correct answer ✔✔ Absorbed dose. Which is the most radiosensitive portion of the
cell cycle?
20mSv - correct answer ✔✔ Millie is a tech. What is the maximum annual permissible whole
body dose that can be registered on her OSL?
Aberrations - correct answer ✔✔ What is the term used to describe breaks in chromosomes?
Direct - correct answer ✔✔ In digital imaging, what is the relationship between the matrix and
spatial resolution?
10-15cm - correct answer ✔✔ What OID is required to optimize the air gap technique?
, *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 ✔✔ 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?
7.2 - correct answer ✔✔ 100cm SID changes to 120cm SID, original mAs was 5mAs. What is the
new mAs?
Determine if pt is in the 10-day period after onset of menstruation - correct answer ✔✔ 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?
Lateral decub with AP horizontal beam - correct answer ✔✔ 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?
Rectosigmoid area - correct answer ✔✔ What should be included in an image looking for
ulcerative colitis?
Sternal notch - correct answer ✔✔ T2/3 is at what level?
Cesium iodide is used to convert x-rays to light - correct answer ✔✔ In an indirect capture
digital unit, what is the function of the scintillation phosphor coating on a photodiode?
As kV increases, the HVL decreases - correct answer ✔✔ What is the relationship between the
kV and half value layer?
