Outcome 7

Question 1

what are the two uses of the eluate?

Answer 1

1) patient studies in present form
2) to make other radiopharm kits

Question 2

what are two examples of each of the two uses?

Answer 2

patient studies - thyroid scans and gated cardiac
radiopharm kits - MDP and Sestamibi

Question 3

what are the three methods in calculating activity for kits?

Answer 3

1. back decay method
2. educated guess method
3. maximum kit activity method

Question 4

which is the easiest method to calculate activity for kits?

Answer 4

maximum kit activity method

Question 5

what are the pro(s) and con(s) to the back decay method?

Answer 5

pro - most accurate way
cons - only good if you don’t have any “extra” pertechnetate

Question 6

what are the pro(s) and con(s) to the educated guess method?

Answer 6

pro - practical method
con - risk running out of activity

Question 7

what are the pro(s) and con(s) to the maximum kit activity method?

Answer 7

pro - when patients require the same radiopharm and good for when your lab is super busy

Question 8

what are the six “rights”?

Answer 8

1. patient
2. radiopharmaceutical (i.e. medication)
3. dose (activity)
4. route
5. time
6. documentation

Question 9

what is a bolus?

Answer 9

fast injection

Question 10

how do you perform a bolus?

Answer 10

• larger needle size
• iv line or butterfly
• flush with saline
• low vol dose

Question 11

what are the different methods of administration?

Answer 11

• IV injection
• oral
• inhalation
• intrathecal
• instillation
• subcutaneous
• intradermal

Question 12

what is intrathecal?

Answer 12

injection directly into the CSF and done by physicians

Question 13

what is instillation?

Answer 13

slowly giving radiopharm into body cavity

Question 14

what is the difference between subcutaneous and intradermal?

Answer 14

subcutaneous = under skin
intradermal = in between skin layers

Question 15

what are the most common ways of administration?

Answer 15

IV injections, oral and inhalation

Question 16

what is minimum dose in terms of paediatric doses?

Answer 16

smallest amount of activity that will give quality images
*higher doses WILL NOT necessarily = better images

Question 17

what is maximum dose in terms of paediatric doses?

Answer 17

based on patient safety
dependent on the method used to adjust the dose – max dose may be the adult dose or lower

Question 18

what are the two methods used to adjust paediatric doses?

Answer 18

1. clark’s rule
2. body surface area (bsa) based adjustments

Question 19

what is clark’s rule?

Answer 19

dose activity = (patient’s weight (kg) divided by standard adult weight (70 kg))* adult dose

Question 20

what is the max dose using the clark’s rule?

Answer 20

same as adult dose (i.e. for peds that weigh 70 kg or more)

Question 21

what is the minimum dose using clark’s rule?

Answer 21

it’s set by the hospital

Question 22

how do you use the bsa method?

Answer 22

1. body surface is estimated based on weight
2. use of table to determine percentage or fraction of an adult dose

Question 23

what is the max dose using the bsa method?

Answer 23

same as adult dose

Question 24

what is the minimum dose using the bsa method?

Answer 24

there is no minimum dose

Question 25

due to the high variability in peds doses, what was formed?

Answer 25

• North American consensus guidelines for paediatric dose
• image gently campaign