Week 1 practice questions

Question 1

How many Gy does it take to cause cataracts?
a) 2 Gy
b) 3 Gy
c) 3-5 Gy
d) 5 Gy

Answer 1

d) 5 Gy

Question 2

CT abd is how much radiation?
2 mSv
3 mSv
8 mSv
10 mSv

Answer 2

8 mSv

Question 3

Mammograms are how much radiation?
0.0001 mSv
0.05 mSv
0.1mSv
0.3 mSv

Answer 3

0.3 mSv

Question 4

Krypton-81m or Xenon (127 or 133) are used to target what organ?
a) Brain
b) Cardiac
c) Lungs
d) Bone
e) Thyroid
f) WBC

Answer 4

c) Lungs

Question 5

Thallium-201 targets what organ?
a) Brain
b) Cardiac
c) Lungs
d) Bone
e) Thyroid
f) WBC

Answer 5

b) Cardiac

Question 6

Technetium-99 (Tc99) targets what organs? Select all that apply
a) Brain
b) Cardiac
c) Lungs
d) Bone
e) Thyroid
f) WBC

Answer 6

a) Brain
b) Cardiac
c) Lungs
d) Bone

Question 7

The technique that develops the 2D NM images into 3D is called?
SPECT
PET
MRI
CT

Answer 7

SPECT

Question 8

T/F: Pregnancy is an absolute contraindication to nuclear medicine

Answer 8

False

Question 9

Bone scan is performed _____ hours after injection of Tc99
0-2
2-4
4-6
6-8

Answer 9

2-4

Question 10

Which is more expensive?
Bone scan
MRI
Both are equally expensive

Answer 10

MRI

Question 11

Bone scans: Tc99 MDP deposits in area of ______ bone turnover
Least
Greatest

Answer 11

Greatest

Question 12

For what type of cancer was it mentioned that you should NOT use a bone scan?
Multiple myeloma
Leukemia
Ewing Sarcoma
Chondrosarcoma

Answer 12

Multiple myeloma

Question 13

Photopenic lesions are _______ spots in bone scans
a) Hot
b) Cold

Answer 13

b) Cold

Question 14

Progressive uptake during only the skeletal phase of a triple-phase bone scan is indicative of what?
a) Osteoarthritis
b) Osteonecrosis
c) Osteomyelitis
d) Cellulitis

Answer 14

c) Osteomyelitis

Question 15

Which is more commonly used for pulmonary embolisms in typical patients?
a) Ventilation / perfusion scan (V/Q scan)
b) CT pulmonary angiography

Answer 15

b) CT pulmonary angiography

Question 16

A pt has a large perfusion deficit with normal ventilation. This indicates what?
Pneumothorax
Lung cancer
COPD
PE

Answer 16

PE

Question 17

Myocardial perfusion scans involves what?
Nuclear stress test
Echo stress test
Exercise stress test
Any one of the above

Answer 17

Any one of the above

Question 18

Wall segments form reverse “C” on the ______ axis and an upside down “U” on the _______ axis.
a) Vertical; horizontal
b) Horizontal; vertical
c) Short; vertical
d) Short; horizontal
e) Horizontal; short

Answer 18

a) Vertical; horizontal

Question 19

A dominant cold nodule is the __________ likely type of thyroid nodule to be cancerous
Most
Least

Answer 19

Most

Question 20

10 minutes into a normal HIDA scan, where is the radiotracer?
a) Gallbladder
b) Cystic duct
c) Common bile duct
d) Duodenum

Answer 20

c) Common bile duct

Question 21

When is patency of cystic duct confirmed in a HIDA scan? Where is the radiotracer at this time?
a) 30-60 minutes; duodenum
b) 30-60 minutes; gallbladder
c) 60 minutes; duodenum
d) 60 minutes; gallbladder

Answer 21

b) 30-60 minutes; gallbladder

Question 22

“Extravascular intraluminal increased uptake that increases over time” describes what?
a) A positive GI bleeding scan
b) A negative GI bleeding scan
c) A positive HIDA scan
d) A negative HIDA scan

Answer 22

a) A positive GI bleeding scan

Question 23

What test involves FDG (fluorodeoxyglucose)?
a) CT scan
b) PET scan
c) Fluoroscopy
d) HIDA scan
e) MRI

Answer 23

b) PET scan