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Flashcards in Stress Testing with Nuclear Imaging Deck (26)
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1

most widely used nuclear per fusion agents

Thallium 201
technestium 99m

2

nuclear testing can be done on ____________ or _______________

a treadmill or pharmocologically

3

myocardial perfusion imaging can be performed with these techniques

planar
tomographic

4

planar myocardial imaging uses

gama scintillation camera
three standard views

5

three standard views of nuclear testing

anterior
anterior oblique
left lateral

6

tomography imaging (SPECT)

30-32 projections each for 40 secs
deliver image in slices

7

thallium 201

is a metallic element with properties similar to potassium

8

three projections of tomography

short axis
vertical long axis
horizontal long axis

9

half life of thallium

73 hours

10

myocardial thallium activity reaches 80% after how long

1 min

11

peak myocardial activity is how long after thallium injection

24 mins

12

peak myocardial blood flow during a thallium test is reached at

1 min

13

regions that demonstrate increased activity at rest

significant or flow limiting stenosis

14

patients should fast before tests to

minimize GI intake of agent

15

perfusion agent is administered at this % of peak exercise

85%

16

how long after do delayed images become obtained later using the same technique

3-4 hours

17

patients are asked to eat fatty foods between delayed images because

it moves the liver out of the way

18

myocardial segments

designed to correspond to the customary perfusion territory of a coronary artery

19

anterior, anterolateral and septal areas correspond with which CA

Left anterior descending CA

20

inferior segments correspond to which CA

right CA

21

posterior, lateral segments correspond to which CA

left circumflex CA

22

apical area receives it blood supply from which coronary artery

left anterior descending

23

nuclear myocardial imaging are used on what kind of patients

with preexisting EKG abnormalities

24

nuclear imaging is better because

-better localization of ischemia
-improve sensitivity of stress test

25

patients with normal perfusion

very low risk of cardiac death or MI

26

patients with reversible perfusion defects in multiple vascular regions

are at high risk for future cardiac events