Radiology - Practical notes

Question 1

The practical procedure, what must also be checked before taking an X-ray of a patient?

Answer 1

The patient’s details (DOB, address etc)

ALso that they aren’t wearing any jewellery, URA or dentures.

Question 2

Practical procedure steps?

Answer 2

1) Ask the patient to step into the machine and hold the handle
2) USe sterile bite peg - patients should bite down with their front teeth. For edentulous patients place some cotton wool
3) Adjust the height on the machine
4) Switch the positioning of the lights, Horizontal light to be in line with the frankfurt plane angle. The vertical line to be at the midline, and canine lines to be superimposed on the upper canines.
5) Move head support back and the black nobs to close/tighten.
6) Ask the patient to stick their tongue to the top of their mouth and remain still during the exposure

Question 3

For a bitewing what IR size would you use for a primary dentition?

Answer 3

Size 0

Question 4

For a bitewing what IR size would you use for the mixed or permanent dentition?

Answer 4

Size 2

Question 5

What colour of film holder do you use for bitewings?

Answer 5

Red

Question 6

Practical procedure for bitewings?

Answer 6

Position the film 3mm mesial to the mesial aspect of the canines. (if want to see more posterior and include the 8’s, then mesial to the 5’s)
Ask the patient to bite together
And check the collimator alignment

Question 7

For anterior peri-apicals what film holder should you use?

Answer 7

Blue film holder

Question 8

For posterior peri-apicals what film holder should you use?

Answer 8

Yellow

Question 9

What should the set up look like for periapical?

Answer 9

A bar stool

Question 10

What is a trick you can you do when taking a periapical to stabilise the mouth and take a better image>

Answer 10

Place cotton wool on the opposite side to the tooth being examined

Question 11

When taking anterior periapicals which size of IR would you use and how would that be set up?

Answer 11

A vertical size 0 IR
The black side to the beam
Ensure identification dot is facing towards the biting block

Question 12

When taking posterior periapicals which size of IR would you use and how would that be set up?

Answer 12

Use a size 2
Place horizontally with Black side facing beam
The identification dot is facing towards the biting block