Imaging in Cancer

Question 1

What is used for the tissue diagnosis withing a barium examination?

Answer 1

Endoscopy

Question 2

Why is barium used as a contrast?

Answer 2

It has a high atomic number, which allows it to absorb more x-ray photons

Question 3

In a single contrast, what is given?

Answer 3

Barium only

Question 4

In a double contrast, what is given?

Answer 4

Gas and barium

Question 5

What is barium studies being replaced by?

Answer 5

CT scans

Question 6

Name 3 methods of cross-sectional imaging

Answer 6

CT
MRI
PET

Question 7

What is the name given to the attenuation values of voxels in CT scanning?

Answer 7

Hounsfield unit

Question 8

What is hounsfield unit a measure of?

Answer 8

How transparent a molecule is

Question 9

What does TNM stand for in CT diagnosis and staging?

Answer 9

Tumour
Nodes
Metastases

Question 10

What does the ALARA principles stand for?

Answer 10

As low as reasonably achievable

Question 11

What does MRI rely on?

Answer 11

Displacement of protons

Question 12

Vessels can be only detected by an MRI when what happens?

Answer 12

Contrast is injected

Question 13

What is the main contraindication of an MRI?

Answer 13

It is claustrophobic and noisy

Question 14

What is the name of the contrast agent most commonly used in MRI?

Answer 14

Gadolinium DTPA