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PET Quiz 1

Quiz

Powerpoint quiz we received in class.

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Recommended age: 16 years old
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United States

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PET Quiz 1Online version

Powerpoint quiz we received in class.

by Joshua Liberty
1

PET has higher resolution than MRI.

2

Dimensions of crystals and the amount they are apart accounts for high resolution of PET.

3

Proton rich nuclei acheive stability by B+ emission or EC.

4

The Tp of Ga-68 is 2 hours.

5

The Tp of Nitrogen-13 is 10 minutes.

6

The Tp of Rb-82 is 75min.

7

Ga-68 is produced in a cyclotron.

8

Oxygen-15 is prodcued in a cyclotron.

9

A patient is being scanned in a BGO PET scanner; there is a lot of scatter; the best solution is to rescan the patient with a narrow energy window.

10

Singles may not be counted, but must be held by scanner until CTW closes.

11

During times when there is less activity within PET FOV, randoms and scatters increase.

12

An LSO crsytal would have fewer randoms than a BGO crystal.

13

An LSO crsytal would have better stopping power than a BGO crystal.

14

PET detects ______% of patient produced 511 KeV photons.

15

The B+ decays equation is?

16

2 511 KeV photons detected by opposite detectors in coincidence ( at the same time).

17

A coincidence timing window (CTW) is usually ______?

18

2 atoms decay at almost same time, photons from 2 different annihilation events are picked up within the timing window; this is called?

19

What is the solution for random events in PET?

20

No collimator is neede for PET due to?

21

Location (or point within LOR) of AR can be inferred by measuring the time of arrival of the 2 511 KeV photons at opposite crystals; this is called?

22

A BGO PET crystal had?

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