Questions with Correct Answers (Guaranteed Pass
2024–2025)
1. reasons to order an X ray: infection, dyspnea, chest pain, trauma,
hemoptysis, suspected mass
2. What densities can be seen on Xray: air, fat, water (soft tissue), bone and
metal
3. How does air look on X ray?: blackest- less dense
4. What would X ray for pt with emphysema or COPD exacerbation look
like?: Hyperinflated with flattened diaphragm and coarse bronchovesicular
markings
5. What would Xray for pneumonia pt look like?: Ground glass opacities
6. Why would you order a CT?: X ray and exam is inconclusive. Disease
process ongoing w/o clear dx. Can detect things like PE, lung mass, and help
stage tumors d/t better visualization of structures, soft tissues and vessels
than X ray
, 7. Special considerations for CT: -high resolution scan best for intersitial
disease like pulm fibrosis
-consider CT pulmonary angiography when ruling out PE
-contrast scans preferred but contraindicated in renal impairment and allergies
8. Which lung has 3 lobes?: right
9. T or F: diaphragm marks the lowest part of the lungs: False
10. Normal CTR: < 1:2
11. What are the most dense structures on a normal X ray?: bones
12. How do you measure the adequacy of inspiration x ray?: clavicle and ribs
are landmarks<5 ribs =incomplete inspiration >7=hyperexpansion
13. Checklist for reading X ray:
- heart: silhouette sign
-mediastinum
-diaphragm
-lungs
-skeleton
14. When is radiological investigation not warranted?: uncomplicated URI,
asthma, minor trauma,
15. 3 criteria to determine the quality of a chest X ray: rotation, inspiration and
penetration
16. Does MRI use ionizing radiation?: no
17. Advantages of MRI: No ionising radiation, high quality image produced,
distinguishes between different types of soft tissue, not stopped by bone, no
known side effects, many details without contrast
18. Disadvantages of MRI: high costs, longer scanning times than CT, cannot be
used in people with implanted metal devices, not widely available, many
exclusions, need protocol sequence
19. MRI or CT: initial eval of trauma or hemorrhage: CT without contrast