Written exam

Question 1

4 modes of image production

Answer 1

1. Transmission of energy= high energy photons
2. Reflection of energy
3. Emission of energy
4. a,B,gamma positron radiation emission from radioisotopes

Question 2

Emission of energy=

Answer 2

Radiofrequency signal emission from hydrogen atoms

Different tissues have different realignment frequencies

Question 3

Best to worse spatial resolution

Answer 3

Radiography, Mammography
Fluoroscopy
CT (HRCT)
MRI
US
Nuclear medicine (PET, SPECT)

Question 4

5 principle densities

Answer 4

Metal
Bone
Air
Fat
Water

Question 5

CT angio uses which contrast material?

Answer 5

Iodine

Question 6

Gadolinium is used where?

Answer 6

MRI

Question 7

US contrast material can be

Answer 7

Microbubble

Question 8

Preferential contrast agent for gastrointestinal (GI) fluoroscopic examinations

Answer 8

Barium

Question 9

Which modalities do not use ionizing radiation?

Answer 9

MRI

US

Question 10

What does ionizing radiation mean?

Answer 10

A lot of energy that can cause free radical when heating human molecule

Question 11

Which modality equals 250-3500 times the estimated dose equivalent of one XR

Answer 11

Interventional fluoroscopy

Question 12

ALARA

Answer 12

As Low As Reasonably Achievable

Question 13

Nuclear medicine- what kind of isotope do we use?

Answer 13

Unstable

Question 14

Nuclear medicine- what is the most popular isotope?

Answer 14

Tc99

Question 15

Radiopharmacutical in PET?

Answer 15

F18-FDG

Question 16

Which is not a corposcular radiation?
a
B
gamma
Positron

Answer 16

gamma- it is a wave. Doesnt have a weight

Question 17

High FDG uptake in which organ?

Answer 17

Brain

Question 18

What determined the distribution of the radioisotope?

Answer 18

Biochemical characteristics decides on the distribution

Question 19

Do prostate cancer show elevated FDG uptake?

Answer 19

No

Question 20

Which pathologies show elevated FDG uptake?

Answer 20

Pneumonia

Colorectal cancer

Question 21

Which pathology show high Radiopharmacutical uptake in case of bone scintigraphy?

Answer 21

Osteomyelitis
Bone fruction
Inflammation

Question 22

What is not an indication for Thyroid scintigraphy?

Answer 22

Hypothyroidism

Question 23

In which nuclear medicine therapy do we use?

Answer 23

a and B

Question 24

What is an indication for myocardial scintigraphy?

Answer 24

Ischemic heart disease

Question 25

Plannar gamma camera detects what kind of image?

Answer 25

2D

Question 26

Which is indication for dynamic renal scintigraphy?

Answer 26

Impaired flow

Assesement of renal parenchyma

Question 27

What is the half life of Tc99 in minutes?

Answer 27

360

Question 28

What radiation does PET detects?

Answer 28

gamma

Question 29

MR angiography- What type of contrast material should be used?

Answer 29

Gadolinium

Question 30

MRCP=

Answer 30

MRI Cholangio-Pancreatography

Question 31

MRCP uses which sequence?

Answer 31

T2W MRI

High signal in slow/static fluids

Question 32

Best to worse spatial resolution is given by

Answer 32

Mammography (X-Ray)
Fluoroscopy
DSA
CT, MRI
US
Nuclear med

Question 33

TIPS

Answer 33

Tranjagular Intrahepatic Portosystemic Shunts

Question 34

PTA

Answer 34

Percutaneus Transluminal Angioplasty

Question 35

DSA

Answer 35

Digital Substraction Angiography

Question 36

FLAIR is

Answer 36

Like T2 but fluids are dark

Question 37

Which sequence can detect early ischemia?

Answer 37

DWI