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PET Cardiac

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alkathryn's version from 2016-07-24 17:17

Section

Question Answer
Rubidium half-life75 seconds
Rubidium rphxRb-82 Chloride
Rubidium MeV3.15
Nitrogen half-life10 minutes
Nitrogen rphxN-13 Ammonia
Nitrogen MeV1.19
MPI for detection ofCAD and assessing the progression of CAD
Cardiac viability foridentifying viable tissue that may recover contractile function following revascularization techniques
PET is approved whenin place of SPECT or following inconclusive SPECT
Segmented transmission scanCT
Measured transmission scanrad source
Inject rphx then wait ___75 seconds
Imaging acquisition time7 minutes
After imaging, wait forresting dose to decay in generator then stress
Filter used for eachButterworth
Normal myocardiumfunction, well perfused at rest, non-ischemic during stress
Jeopardized myocardiumfunctional, well perfused at rest; dysfunctional during stress
Stunned myocardiumTransiently decreased perfusion and dysfunction
Stunned myocardium improvesspontaneously, can persist for several hours after transient ischemia and eventually is followed by a full functional recovery
Hibernating myocardiumpersistent decrease in perfusion
Hibernating myocardium requiresrestoration of flow (revascularization procedure).
If still alive,can restore blood flow
Myopathic myocardiumpermanently dysfunctional
glucose loading is used to assessviability
Treatment options for severe LVDmedication, revascularization of segments, transplant
Aquire which scan firstemission, then transmission
The goal is to inject FDG whenmyocardium will be using glucose as a metabolic substrate
FDG is administered asblood glucose is dropping
Rb and N are ___ equivalentqualitatively
N-13 is best foroccasional use
Rb-82 is best forhigh volume practice
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