Physics

Question 1

1. Collimator Energy (20M and 442M)

Answer 1

a. Low Energy (<150 keV) = Tc-99m study

Question 4

2. FDG-18

Answer 4

a. Half-life = 110 min

Question 7

a. TcO4 =

Answer 7

Thyroid (Critical Organ), Salivary Glands

Question 8

b. Sestamibi =

Answer 8

Heart, Thyroid, Liver & Biliary Tree, Bowel (Colon critical organ), Kidneys & Bladder, Salivary Glands

Question 9

c. Ga-67 =

Answer 9

Liver, Spleen, Marrow, Bowel, Kidney (<24hr), Nasopharynx, Salivary & Lacrimal Glands, LOTSA Soft Tissue

Question 10

d. I-131 Tx =

Answer 10

Thyroid Bed, Liver (T3/T4 metabolism)

Question 11

f. Octreotide =

Answer 11

Spleen & Kidneys > Liver

Question 12

h. In-111 WBC =

Answer 12

Spleen (Hottest), Some Axial Marrow, NO BOWEL

Question 13

i. Tc-99m WBC =

Answer 13

Similar to In-111 except GI & GU activity

Question 14

j. Tl-201 =

Answer 14

Heart, Skeletal Muscle, GI Tract & Liver, Kidneys (critical organ), Salivary Glands, Eyes, Choroid Plexus

Question 15

k. Sulfur Colloid =

Answer 15

85% Liver, 10% Spleen, 5% Marrow (Liver Critical Organ)