Nukes

Question 1

Name the radiotracer

Answer 1

I-123 MIBG

• Liver, bowel, salivary glands and heart
• thyroid not seen since patient treated with Lugol’s solution

Question 2

Name the device and what it is used for

Answer 2

Ionization chamber survey meter

• Used to measure high exposure rates (range from 0.1 mR to 100 R) such as those from patients receiving radioiodine therapy for cancer
• Activity measured at 1m and 3m

Question 3

Name device

Answer 3

GM counter

Question 4

Name Device

Answer 4

Gamme camera

Question 5

Name Device

Answer 5

Scintillation probe

Question 6

Wolff-Chaikoff effect

Answer 6

autoregulatory phenomenon, whereby a large amount of ingested iodine acutely inhibits thyroid hormone synthesis within the follicular cells, irrespective of the serum level of thyroid-stimulating hormone (TSH)

Question 7

Jod-Basedow phenomenon

Answer 7

hyperthyroidism following iodine intake in a person with long term underlying thyroid disease.

Question 9

Graves treatement dose of I-131 calculation

Answer 9

estimated thyroid gland isze x (0.13-0.18) mCi/g of thyroid tissue / 24 hour RAIU

Question 10

Multinodule goiter treatment dose of I-131 compared to Grave’s disease

Answer 10

MNG is increased dose compared to GD