RADIODIAGNOSIS- PAGE 2

RADIODIAGNOSIS MCQ- PAGE 2

1. The following term refers to a measure designed to reflect stochastic risk from radiation
(A) Dose (B) CT Dose Index (CTDI)
(C) Average dose (D) Effective dose
Ans: D

2. Automated exposure compensation uses the topogram image to determine
(A) Tube current (mA) (B) Pitch
(C) Reconstruction filter (D) Bowtie filter
Ans: A

3. Iodine is a good CT contrast agent because
(A) We can achieve very high concentrations in target organs.
(B) The k-edge (33 keV) is much lower than X-ray energies produced by a 120 kV tube.
(C) The k-edge (33 keV) is near the average diagnostic X-ray energy produced by a 120 kV tube.
(D) It simulates the attenuation of bone.
Ans: C

4. Missile effects are shown by
(A) Metallic objects (B) Ferromagnetic objects
(C) Iron rod (D) All of the above
Ans: D

5. PACS stands for
(A) Picture Archiving and Communicating System
(B) Picture Analogue and Computer System
(C) Positive Analogue Computer System
(D) Positive Anode Clustering System
Ans: A

6. All the statements regarding shoulder radiography is true, except :
(A) In AP view with neutral rotation both greater and lesser tuberosities are super imposed.
(B) In Grasheys projection there is more overlap of gleniod than AP projection.
(C) AP oblique view rotate the body 35-45 degree.
(D) In Y view humeral head should super impose over the base of Y if not dislocated.
Ans: B

7. Real time imaging modality is
(A) CT (B) MRI
(C) USG (D) PET
Ans: C

8. Pattern of blood flow is examined in USG by
(A) Elastography (B) Doppler mode
(C) Panoremic view (D) Gradient
Ans: B

9. Flushing, Nausea in context of contrast reaction in radiological examination is
(A) Minor reaction (B) Intermediate reaction
(C) Severe reaction (D) None of the above
Ans: A

10. In Film processing – fixing, all are true, except :
(A) Made of hypo/ammonium thiosulphate
(B) Preservative for developer and fixer is same
(C) Hardening agent harden and shrinks gelatin in the film emulsion to prevent its reduction
(D) Acidifier neutralizes alkaline developer
Ans: C

11. TLD false statement is
(A) Active radiation detection device. (B) Disc are made of calcium SO4.
(C) Lower filter is kept open. (D) Measures doses between 0.01-10.4 mGy.
Ans: A

12. Which of the following numbers reported by the scanner best reflects the total amount of radiation delivered to the patient ?
(A) Dose (B) CT Dose Index (CTDI)
(C) Pitch (D) Dose-Length Product (DLP)
Ans: D

13. Element proved satisfactory for use as IV radiological contrast medium is
(A) Barium (B) Iodine
(C) Manganese (D) Iron
Ans: B

14. In lateral view chest X-ray
(A) Left hemidiaphragm lower than right
(B) Right hemidiaphragm lower than left
(C) Right dome is fully traceable
(D) Dome closer to film is lower
Ans: A

15. Unit of power is
(A) watt (B) volt
(C) ampere (D) tesla
Ans: A

16. X-ray was discovered by
(A) Honsefield (B) Mansfield
(C) Roentgen (D) Lauterbur
Ans: C

17. X-ray tube is made of
(A) Pyrex glass (B) Plaster
(C) Iron (D) Platinum
Ans: A

18. Negative terminal of X-ray is called
(A) Cathode (B) Anode
(C) Filter (D) Window
Ans: A

19. The region in the anode that is bombarded by electrons from cathode in X-ray tube is
(A) Target (B) Filter
(C) Focal spot (D) Filament
Ans: C

20. KVP for high KV chest X-ray
(A) 60 (B) 90
(C) 300 (D) 150
Ans: D

21. T2 sequences use
(A) Longer TR and longer TE (B) Shorter TR and longer TE
(C) Longer TR and shorter TE (D) Shorter TR and shorter TE
Ans: A

22. Echo planar imaging forms echoes using
(A) Successive 90-degree pulses (B) Successive alternating 90-degree pulses
(C) Successive 180 degree pulses (D) Successive alternating gradients
Ans: D

23. Lingula of lung is best seen in which X-ray view ?
(A) Lordotic (B) Apical
(C) Left lateral decubitus (D) Right lateral decubitus
Ans: A

24. Most signal in K space is present
(A) in the centre (B) in the periphery
(C) along the frequency encoding axis (D) along gradient encoding axis
Ans: A

25. In order to decrease dose in large patients
(A) decrease kV and improve image noise
(B) increase kV and improve image noise
(C) increase in kV and improve in contrast
(D) decrease in kV and improve in contrast
Ans: B

26. CT density of water in HU :
(A) 0 (B) 70
(C) 1000 (D) – 30
Ans: A

27. Strikers view is used for :
(A) Shoulder (B) Patella
(C) Cervicothoracic junction (D) None of the above
Ans: A

28. MRI full form is
(A) Magnetic Resonance Imaging (B) Multiple Resonance Imaging
(C) Magnetic Reformatted Imaging (D) Magnetizing Radiological Imaging
Ans: A

29. Contrast used in IVU study
(A) Barium sulphate (B) Magnavist
(C) Ultravist (D) Carbon dioxide
Ans: C

30. MRI was first demonstrated by :
(A) Roentgen (B) Peterson
(C) Honsefield (D) Lauterber
Ans: D

31. In X-ray imaging, noise is determined by
(A) Energy of X-rays hitting the detector
(B) Number of X-rays hitting the detector
(C) Tissue contrast
(D) Amount of scatter hitting the detector
Ans: B

RADIODIAGNOSIS- PAGE 2

RADIODIAGNOSIS MCQ- PAGE 2

UPSC Study Materials​MCQs for Competitive Examinations

UPSC Study Materials
MCQs for Competitive Examinations