Physics Nucs

Question 1

Tc 99 1/2

Answer 1

6 hours

Question 2

I 123 1/2

Answer 2

13 hours

Question 3

I 131 half

Answer 3

8 days

Question 4

indium, gallium thallium

Answer 4

about 3 days

Question 5

xe 133 1/2 life

Answer 5

5 days

Question 6

f 18 half life

Answer 6

110 minutes

Question 7

tc 99m photon energy

Answer 7

140 kev

Question 8

I 123 photon energy

Answer 8

159 kev

Question 9

I 131 energy

Answer 9

365

Question 10

Ga 67 energy

Answer 10

100, 200, 300, 400

Question 11

Pet agent photon energy

Answer 11

511

Question 12

thallium photon energy

Answer 12

80

Question 13

upper limit allowed for molybdenum breakthrough

Answer 13

0.15 microCI Mo per Tc 99m

Question 14

upper limit Al allowed

Answer 14

10 microgram Al per mL of Tc 99m eluate

Question 15

extrinsic uniformity with collimator terst how often

Answer 15

daily

Question 16

photopeaking test how often

Answer 16

daily

Question 17

intrinsic uniformity test how often

Answer 17

weekly

Question 18

bar phantom

Answer 18

weekly

Question 19

center of rotation test

Answer 19

monthly

Question 20

jascszak phantom test

Answer 20

quarterly

Question 21

What two agents are transient perfusion agents and used for cerebral vasculature?

Answer 21

Tc 99m DTPA

Tc 99 pertechnetate

Question 22

What two agents are lipophilic and used to image brain parenchyma?

Answer 22

Tc 99m HMPAO

Tc 99m ECD

Question 23

what agent is used to evaluate NPH?

Answer 23

Indium 111 DTPA

Question 24

What agent is used to evaluate shunt patency?

Answer 24

Tc 99m DTPA

Question 25

What two agents are used for seizure imaging?

Answer 25

Tc 99m HMPAO & ECD

Question 26

what is a beta particle

Answer 26

electron that came out of the nucleus

Question 27

short septa characteristics

Answer 27

sensitivty but bad resolution

Question 28

what kind of septa and holes to use for high energy?

Answer 28

thin septa, wide holes

Question 29

what kind of septa and holes for lower energy?

Answer 29

thick septa narrow holes

Question 30

magnification=

Answer 30

F/B F=distance form pinhole to detector B pinhole to patient

Question 31

what is a scintillation crystal made of

Answer 31

sodium iodine with thallium

Question 32

thick crystal has what effect on sensitivty and spatial resolution

Answer 32

increased sensitivity | worse spatial resolution

Question 33

what does a scintillation crystal do?

Answer 33

struck by phton and produces light

Question 34

what is the purpose of a PMT

Answer 34

converts light to electric signal

Question 35

what is the function of a pulse height analyzer

Answer 35

eleimated background

Question 36

What causes star artifact?

Answer 36

septal penetration of hexagonal collimator holes

Question 37

what percentage of non uniformity is allowed?

Answer 37

2-5 percent

Question 38

device used to detect small amounts of contamination

Answer 38

geiger muller counter

Question 39

what is the max dose GM can handle

Answer 39

100 mr/h

Question 40

consistency checked

Answer 40

daily

Question 41

linearity checked

Answer 41

quarterly

Question 42

accuracy checked

Answer 42

at installation and annually

Question 43

geometry checked

Answer 43

at instillation and any time device moved

Question 44

major spill of tc 99

Answer 44

100 mci

Question 45

major spill of thallium

Answer 45

100 mci

Question 46

major spill of indium

Answer 46

10 mci

Question 47

major spill of I 123

Answer 47

10 mci

Question 48

major spill of gallium

Answer 48

10mci

Question 49

major spill of I 131

Answer 49

1

Question 50

Wipe test does not work on what?

Answer 50

xenon

Question 51

annual dose limit of public

Answer 51

100mrem

Question 52

mrem per hour in unrestrited area

Answer 52

2

Question 53

radiation area= what radiation at 1 hour at 30cm

Answer 53

0.005 rem or 0.05msv

Question 54

high radiation area

Answer 54

0.1rem or 1 msv in 1 hr at 30cm

Question 55

1 rad quals how many rem

Answer 55

1

Question 56

1 rad equals how many gray

Answer 56

0.01

Question 57

1msv = how many mrem

Answer 57

100

Question 58

1 msv = how many rem

Answer 58

0.1