Endocrine Nm Procedures

Front 1

What RP's are used in a thyroid study?

Back 1

I-131, I-123, 99mTc

Front 2

Name 2 procedures for thyroid?

Back 2

Uptake
Imaging

Front 3

What is the imaging time for Tc?
For Iodine?

Back 3

Tc=10-20min
Iodine= 4 &24h

Front 4

What is Graves disease?

Back 4

Hyperthyroidism

Front 5

What kind of thyroid activity is associated with thyroiditis?

Back 5

Hypo

Front 6

Which RP is used for thyroid uptake and imaging?

Back 6

iodine

Front 7

Why is Tc only used for thyroid imaging?

Back 7

It naturally goes to the thyroid, but isn't used in function?

Front 8

Pt prep for a thyroid scan?

Back 8

NPO after Midnight
Off thyroid meds
Low iodine diet for a few days

Front 9

Doses for 123-I and 131-I

Back 9

123=200-500uCi
131=10uCi

Front 10

The distance from face of probe crystal to neck for uptake cpm?

Back 10

25cm

Front 11

What is the standard counted in?

Back 11

CPM and a neck phantom

Front 12

Why is a background count done over the knee?

Back 12

Same size and vascularity as the neck

Front 13

Thyroid CPM - Pt bkg CPM / standard CPM= ?

Back 13

Thryoid uptake (x100 for %)

Front 14

Normal range results at 4-6h for thyroid uptake?

Back 14

6-18%

Front 15

Normal range results at 24h for thyroid uptake?

Back 15

10-30%

Front 16

Graves, Plummers (toxic nodular goiter), and a Tumor are all seen with what kind of thyroid acitivy?

Back 16

Hyper

Front 17

What is the most commonly used RP for thyroid imaging?

Back 17

I-123

Front 18

Dose of Tc for thryoid imaging?

Back 18

5-10mCi

Front 19

Collimator for thryoid

Back 19

Pinhole (best resolution for small organs)

Front 20

A view of the head, neck and chest is called?

Back 20

Bird's Eye

Front 21

Why is a Bird's Eye view done?

Back 21

To compare salivary glands and thryoid, activity should be equal.

Front 22

Why must a pt's head be tilted backward for images?

Back 22

Reduces superimposition of salivary glands

Front 23

4 images needed for thryoid imaging

Back 23

ANT
ANT w/marker
RAO
LAO

Front 24

Broad view contains less head and more chest than Bird's Eye? T or F

Back 24

True

Front 25

% of all nodules are malignant

Back 25

5%

Front 26

Which nodule is more likely to be malignant, hot or cold?

Back 26

COLD (20% chance)

Front 27

Enlarged thryoid is termed a ?

Back 27

Goiter

Front 28

A course, patchy distribution is commonly seen with ?

Back 28

Thyroiditis

Front 29

Increased uniform density & a pyramidal lobe is seen with ?

Back 29

Graves hyperthroidism

Front 30

What % uptake at 24h is seen with Graves?

Back 30

40-70%

Front 31

Lingular thryoid tissue is seen where?

Back 31

At the base of the tongue

Front 32

Which RP is used to look for deep ectopic thryoid tissue? Why?

Back 32

I-131; longer T 1/2 & higher energy

Front 33

TSH and thyroid functioning are inverse or proportional?

Back 33

Inverse relationship

Front 34

Which lobe is normally slightly longer?

Back 34

Right

Front 35

Which RP is used for WB imaging?

Back 35

I-131

Front 36

Indications for WB thryoid imaging?

Back 36

Metastatic thyroid disease
Residual thyroid tissue (post ablation)

Front 37

How long post thyroidectomy is a WB thyroid scan performed?

Back 37

2 months

Front 38

WB RP dose of I-131

Back 38

2-10mCi

Front 39

How long should pt be NPO for WB thryoid?

Back 39

4hr before and 1 hr post

Front 40

What is the best amt of time to wait to do a WB thryoid imaging scan?

Back 40

48-72h

Front 41

WB thyroid images taken?

Back 41

WB ANT/POST or
Spots:
head to thigh (5min or 100k)

Front 42

Normal hot spots on WB thryoid?

Back 42

bladder, GI, stomach, colon, mouth, salivary glands

Front 43

RP for parathyroid glands?

Back 43

Tl-201
NaTcO4 or Tc-sestamibi

Front 44

Tl-201 dose?

Back 44

2-3mCi

Front 45

Peak uptake time of Tl-201

Back 45

5-10min

Front 46

Indications for parathyroid study

Back 46

adenoma (hyperfunctioning)
hyperplasia

Front 47

2 types of parathyroid procedures

Back 47

Dual isotope subtraction
Single isotope, 2 phase

Front 48

Tl-201 concentrates in the parathyroid if a ___ is present

Back 48

Tumor

Front 49

What does the parathyroid regulate? 2 things

Back 49

Calcium
Phosphorus

Front 50

Functioning tumors of the adrenal glands are called?

Back 50

Pheochromocytomas

Front 51

The right adrenal gland looks like a triangle, what does the left look like?

Back 51

Crescent

Front 52

Which adrenal gland is higher and more posterior?

Back 52

Right

Front 53

3 zones of the adrenal cortex?

Back 53

glomerulosa-cortizone
intermedia-aldosterone
fasciculata-androgens

Front 54

Moon face is a sign of?

Back 54

Cushings (increased weight)

Front 55

Conn's syndrome symptoms?

Back 55

excess aldosterone, hyper tension, hyperkalemia

Front 56

Wt/shape/location of pituitary gland?

Back 56

.5g pea sized in sella turcica of midbrain

Front 57

Most frequent disease of hyperfunctioning ant. pituitary tumor?

Back 57

Acromegaly

Front 58

Serpentine shaped organ?

Back 58

Pancreas

Front 59

What RP is used to look for pancreatic tumors?

Back 59

Octreoscan AKA 111-In Pentatreotide (for neuroendocrine tumors)

Front 60

Islet of langerhans synthesize & secrete?

Back 60

Insulin

Front 61

Another name for the pituitary gland?

Back 61

Hypophysis

Front 62

Name/dose for Thryoid/parathyroid RP's

Back 62

Parathyroid: Tl=2-3mCi & Tc-20mci
Thyroid Imaging:
1-131=2-10mCi (WB)
I-123=200-500uCi
Tc=5-10mCi
Thyroid uptake:
I-131= 10uCi
I-123=200-500uCi

Front 63

Thryoid secretes which 2 hormones?

Back 63

T3-tri iodothyroxinine
T4-thyroxine
They regulate tissue metabolism

Front 64

Most common nuclear medicine procedure of the endocrine system?

Back 64

Thryoid scan

Front 65

Evidence of descent of thryoid from the tongue base?

Back 65

Pyramidal lobe

Front 66

Overall function of the thyroid is controlled by the ?

Back 66

Hypothalmus

Front 67

Total weight/shape of thyroid lobes

Back 67

30g & butterfly shaped

Front 68

2 types of thyroid diseases

Back 68

Functional
Structural