General rules

Question 1

1. Which of the following rules applies generally to radiodiagnostics

Answer 1

• The images are oriented as if we were looking at the patient - the right side is on the left half of the image and left on the right.

Question 2

2. On an X-ray image of a hand how do you know which hand you are looking at? -

Answer 2

Only according to the R and L frames included on the slide.

Question 3

3. The best lighting for evaluating images is

Answer 3

– A dimly lit room, without a light source behind the monitor.

Question 4

4. Select the most correct statement

Answer 4

• A diagnostic monitor is more accurate in certain situations

Question 5

5. What name is given to an image when considering the display according to the direction of X-rays to a certain position of the body? -

Answer 5

Projection

Question 6

6. Lateral projection

Answer 6

– is useful especially in determining the location of a foreign body

Question 7

7. How do you obtain a semiaxial projection?

Answer 7

• it is a position in which you bend a particular part of the body (eg. head

Question 8

8. Which of the following things will be influenced by the patient’s position? -

Answer 8

chest fluid, free air in the peritoneal cavity, residual stools in colon during irriography

Question 9

9. Hydroaeric phenomenon

Answer 9

• Occurs in an AP projection of a standing patient at the air and fluid interface

Question 10

10. Air-fluid level occurs when

Answer 10

• there is non-moving fluid and gas present in the image taken with a horizontal beam

Question 11

11. Basic projections on XR include -

Answer 11

AP, PA and lateral

Question 12

12. When objects of the same size are different distances from the x-ray tube, the object closer to the x-tube appears

Answer 12

• Bigger

Question 13

13. The most transparent interface for XR radiation is -

Answer 13

Air

Question 14

14. The least transparent structure on XR from these is -

Answer 14

Metal

Question 15

15. Choose the correct statement:

Answer 15

Transparency of a tissue is affected by its thickness

Question 16

16. Which of the following is correct:

Answer 16

Fat is more transparent than muscle or water

Question 17

17. Contrast in X-ray imaging occurs -

Answer 17

when areas with different transparency are next to each other

Question 18

18. The silhouette sign means –

Answer 18

there is no border present in areas where we expect to see one

Question 19

19. Request form -

Answer 19

Should contain the basic information relevant to the examination

Question 20

20. What does “differential diagnosis” mean? -

Answer 20

a set of diagnoses that may be the cause of the pathological finding on a radiological image

Question 21

21. When we say “the left hemithorax is more transparent” on a chest XR, it means

Answer 21

– the left hemithorax is darker

Question 22

22. Shadow and translucency on XR can be decribed as

Answer 22

• Shadow is a bright spot on the image and translucency is the darker areas

Question 23

23. What do you call fine shadows of the displayed structure, often used in CT of the lungs?

Answer 23

Ground-glass opacity

Question 24

24. Consolidation on CT of the chest means -

Answer 24

complete loss of airiness in the lung and inability to differentiate the vascular structures

Question 25

25. When describing XR images we use the terms –

Answer 25

Shadows and translucencies

Question 26

26. In the description of an Ultrasound we use the terms

Answer 26

• Hypoechogenic and Hyperechogenic

Question 27

27. In the description of a CT, we use terms –

Answer 27

Hypodense and hyperdense

Question 28

28. In the description of an MRI we use the terms -

Answer 28

Hyposignal and hypersignal