Inservice Random

Question 1

How does crystal thickness effect intrinsic effiency and spatial resolution?

Answer 1

Thicker increases IE and decreases spatial resolution

Question 2

How often is gamma camera linearity checked and with what?

Answer 2

Weekly, Bar phantom

Question 3

How often is gamma camera spatial resolution checked? And with what?

Answer 3

Weekly, Bar phantom

Question 4

How often is gamma camera uniformity checked? And with what?

Answer 4

daily, flood source

Question 5

How often is gamma camera SPECT CT center of rotation checked? and with what?

Answer 5

Monthly, point or line source

Question 6

For dose calibrators how often is geometry checked?

Answer 6

At installation and after any repairs

Question 7

For dose calibrators how often is consistency checked? What the accepted %?

Answer 7

Daily, <5% diff

Question 8

For dose calibrators how often is linearity checked?

Answer 8

Once at install and quaterly

Question 9

For dose calibrators how often is accuracy checked?

Answer 9

annually

Question 10

What is radiochecmial purity measuring? How is it measured?

Answer 10

Mo to Tc. Thin-layer chromotogrphy

Question 11

What three pathologies other than infection is In-111 good for?

Answer 11

Neuroendocrine tumors, Pheo
Carcinoid
Meningoma

Question 12

What infections can In-111 evaluate?

Answer 12

Intra-abdominal
Paraprostetic
IBD

Question 13

What two cases is Gallium better then IN-111?

Answer 13

Disk space infection

PCP pneumonia

Question 14

What medications interfere with MIBG?

Answer 14

Labelatolol

Calcium Channel Blockers

Question 15

Whole lung v/q matched abnormality?

Answer 15

Swyer-james

Question 16

Whole lung v/q mismatch?

Answer 16

Takayasu’s arteritis

post radiation

Question 17

For T99m-RBC how does a cavernous hemangioma appear vs a hepatic abscess?

Answer 17

Delayed intense uptake for hemangioma

Photopenia for abscess