Test #2 Review

Front 1

A false negative parathyroid scan can be caused by

Back 1

poor positioning

Front 2

The function of the parathyroid gland is to

Back 2

regulate calcium ion concentration

Front 3

In primary hyperparathyroidism, the cause is usually

Back 3

parathyroid adenoma 85% of the cases

Front 4

Which radiopharmaceutical provides minimal washout from the parathyroid adenoma up to 2 hours post injection?

Back 4

Tc99m-sestabimi

Front 5

Parathyroids are

Back 5

imbedded in the thyroid gland

Front 6

If ectopic thyroid tissue is suspected, the tech can expect to find it most commonly in which of the following areas?

Back 6

at the base of the tongue and in the mediastinum

Front 7

Patients presented with a parathyroid implant, should include an image of the

Back 7

forearm

Front 8

In the Tc99m Sestamibi subtraction protocol, the parathyroid scan phase starts

Back 8

10-15 minutes post injection of Tc99 Sestamibi.

Front 9

A parathyroid adenoma in the Tc99m Sestamibi subtraction protocol is interpreted by

Back 9

A fixed or increasing area of activity over time.

Front 10

The recommended dose of Tc99m Sestamibi is

Back 10

20-25mCi

Front 11

In the Tc99m Sestamibi I123 subtraction protocol the dose of I123 is

Back 11

200 micro curies

Front 12

The thyroid phase of the imaging in the Tc99m Sestamibi I-123 subtraction protocol is started at

Back 12

4 hours following the administration of I-123

Front 13

Thyroid tissue rising from the isthmus or medial aspect of one lobe is called the

Back 13

pyramidal lobe

Front 14

Markers using Tc99m or Co57 point sources on thyroid images are for

Back 14

anatomic references

Front 15

Following total thyroidectomy, total body imaging with radioiodine normally will demonstrate tracer concentraction in the

Back 15

salivary glands, stomach and bladder

Front 16

When performing a radioiodine thyroid uptake, nonthyroidal (body) background measurements may be taken over the

Back 16

thigh

Front 17

Thyroid uptake using I123 are usually made at

Back 17

4 or 24 hours post administration

Front 18

Imaging of the thyroid most often is accomplished withy the

Back 18

pinhole collimator

Front 19

Routine views for the thyroid scan include

Back 19

anterior and both laterals

Front 20

When performing a thyroid uptake all of the following are true except for

Back 20

the distance from the patient to the detector does not effect the uptake

Front 21

Thyroid uptake is determined by which of the following equations

Back 21

(Thyroid-body background)/(capsule- room background) x 100

Front 22

When calculating the patient's uptake at which point do you need to use the decay factor

Back 22

When the patient's capsule alone is used for determination of uptake

Front 23

Patient preparation for thyroid imaging and uptake studies is

Back 23

fasting 4 hours before, 2 hours after and no thyroid medications

Front 24

When ectopic thyroid tissue is suspected ______________
WHICH VIEWS????

Back 24

should be obtained

Front 25

A CT scan using iodinated contrast media is performed on a patient. What effect would this have on the I123 thyroid uptake performed 3 days later?

Back 25

decrease the radiopharmaceutical uptake

Front 26

The half life of I123

Back 26

13 hours

Front 27

The standard dose for thyroid uptake using I123 is

Back 27

100-200 micro curies

Front 28

In performing a thyroid uptake, the patient's thyroid is counted 5 cm from the surface of the patient's neck. The standard was counted 20 cm from the surface of the neck phantom. What is the effect on the thyroid uptake value collected from this data?

Back 28

The uptake value will be falsely increased

Front 29

Imaging for I123 thyroid scan usually begins at

Back 29

4 or 24 hours post administration

Front 30

Whole body imaging for thyroid metastases utilizes which radiopharmaceutical?

Back 30

I-131 sodium iodide

Front 31

Imaging for whole body thyroid metastases begins _________ after radiopharmaceutical administration

Back 31

???

Front 32

Utilization of Thyrogen, external TSH allows the patient to

Back 32

remain on thyroid medications

Front 33

After the therapeutic dose has been administered to an inpatient and radiation isolation has begun

Back 33

all of the above......see question # 38

Front 34

Which of the following best describes the characteristics of the radiation emitted by I131?

Back 34

pure B emitter

Front 35

Which of the following practices will help to minimize radiation exposure to others?

Back 35

all of the above....see question # 40

Front 36

What is the main consideration for the release of patients administered with high dose I131?

Back 36

Radiation exposure of the public and family members

Front 37

Which type of thyroid carcinomas are the most iodine avid and best suited for I131 therapy

Back 37

poorly differentiated anaplastic and medullary thyroid cancers.

Front 38

Patients receiving I-131 therapy doses for Graves disease receive a single dose designed to deliver

Back 38

80 uCi I131 x gram weight of gland/24 hour uptake

Front 39

The term radiation ablation refers to

Back 39

all of the above.....see # 44

Front 40

DTPA is extracted from the vascular system by means of

Back 40

glomerular filtration

Front 41

MAG3 is extracted from the vascular system by means of

Back 41

tubular secretion

Front 42

Imaging in patients with renal failure for flow and function, the preferred radiopharmaceutical

Back 42

Tc MAG3

Front 43

The renal split function is determined by which point on the time activity graph

Back 43

1-2 minutes

Front 44

Lasix administered dose in an diuretic augmented renogram is determined by

Back 44

0.5 mg/kg

Front 45

ACE inhibitor renogram require the pre-administration of which pharmaceutical

Back 45

Captopril