PET

Question 1

Positron emission tomography is a modern diagnostic and research visualization
technique (T/F)

Answer 1

TRUE

Question 2

PET is a non-invasive technique that examines biochemical, metabolic and receptor
processes (T/F)

Answer 2

TRUE

Question 3

Positron emitters emit gamma radiation (T/F)

Answer 3

FALSE

Question 4

Of the positron emitters, 11C is most commonly used in clinical practice (T/F)

Answer 4

FALSE

Question 5

Positron emitters are short-lived radionuclides (T/F)

Answer 5

TRUE

Question 6

The most common way to obtain positron emitters is in a nuclear reactor (T/F)

Answer 6

FALSE

Question 7

Positron emitters are incorporated into numerous biomolecules (T/F)

Answer 7

TRUE

Question 8

The half-life of 18F is 120 minutes (T/F)

Answer 8

TRUE

Question 9

Positron emitters can be obtained in the generator (T/F)

Answer 9

TRUE

Question 10

Tumor cells have elevated intracellular concentrations of hexokinase, which
phosphorylate glucose and 18F-FDG thereby trapping them within the cell (T/F)

Answer 10

TRUE

Question 11

18F-FDG-mechanism of accumulation in tumors:
a) Elevated levels of energy-dependent transmembrane transport protein (GLUT)
b) Tumor cells have elevated intracellular hexokinase concentration
c) Increased perfusion in tumors
d) All of the above (a, b, c)

Answer 11

D

Question 12

18F-FDG accumulates:
a) All of the above
b) In malignant tumors and in infectious / inflammatory regions
c) Only in benign tumors
d) Only in malignant tumors

Answer 12

B

Question 13

18F-FDG is excreted:
a) Through the gastrointestinal tract
b) Through tubular secretion of the kidney
c) Free filtration into the glomerulus of the kidney

d) Glomerular filtration through the kidneys, of which one part is reabsorbed

Answer 13

D

Question 14

PET is used in:
a) All
b) Neurology
c) Cardiology
d) Oncology

Answer 14

A

Question 15

The positron emitters obtained in the generator are
a) 13N
b) 11C
c) 82Rb and 68Ga
d) 13N

Answer 15

D

Question 16

18F- is obtained
a) In the reactor
b) In the generator
c) In a cyclotron
d) All of the above (a, b, c)

Answer 16

C

Question 17

Positron emission tomography is based on the physical principle:
a) Scintillations
b) Ionization
c) Annihilation
d) All of the above (a, b, c)

Answer 17

C

Question 18

Indication for 18F-FDG PET in breast carcinoma is:
a) detection od primary tumor

b) detection of lymh nodes involvements
c) detection of distan metastases after the treatment
d) Under a) and c)

Answer 18

C

Question 19

Indication for 18F-FDG PET in colorectal cancer:
a) rising value of CEA after the treatment
b) diagnosis of recurren disease
c) A & B
d) diagnosis tumor primary

Answer 19

C

Question 20

Indication for 18F-FDG PET in thyrpod carcinoma is:
a) negative posttreatment whole body scan
b) risig Tg values
c) evaluationa of disease progresion after the surgery
d) Under a) and b)

Answer 20

D