Radiopharms

Question 1

What is 99mTc- mebrofenin used for?

Answer 1

Hepatic function

Question 2

What is the mean ejection fraction of 99mTc-mebrofenin in a dog when evaluating gallbladder emptying?

Answer 2

60% +/- 18%

Question 3

What is the half life of Indium - 111?

Answer 3

2.8 days

Question 4

What photon energy is release by Indium - 111?

Answer 4

172 and 247keV

Question 5

What is Indium -111 use for?

Answer 5

WBC labeling and inflammatory imaging

Question 6

What is the half life of Iodine 123?

Answer 6

13.1 hours

Question 7

What is the photon energy of iodine 123?

Answer 7

159 keV

Question 8

What is the half life of iodinie 131?

Answer 8

8 days

Question 9

What is the photon energy of iodine 131?

Answer 9

364 keV

Question 10

What is the photon energy of 99mTc?

Answer 10

140 keV

Question 11

What is the photon energy of Moly-99?

Answer 11

740 keV

Question 12

What is the half life of Moly-99?

Answer 12

67 hours

Question 13

What is the half life of Fluroine 18?

Answer 13

109 min

Question 14

What is the photon energy of fluorine 18?

Answer 14

511 keV

Question 15

What radionucludes are beta emitters?

Answer 15

Fluorine 18 - positron
Molybdenum 99 - Negatron
Iodine 131 - Negatron

Question 16

Why is there an m with 99mTc?

Answer 16

M = metastable … it is in isomeric transition. It already got rid of a beta particle now it has to give off a gamma ray.