12 Questions
What is the primary purpose of gated radionuclide angiography (RNA)?
To measure left ventricular ejection fraction and evaluate left ventricular regional wall motion
What is required to label the blood for RNA?
99mTc-labeled red blood cells
How many frames are typically used in a gated acquisition?
16-20 frames
What resets the gate during a gated acquisition?
The R-wave
How long does the scanning process typically take?
1 hour
How is the pediatric dose of 99mTc-Iabeled red blood cells adjusted?
According to the patient's weight
What is the principle of thallium-201 myocardial perfusion study?
To diagnose coronary artery disease with high sensitivity and specificity
What is the approximate percentage of the injected dose of 201-TI that is taken up by the myocardium at rest?
1-2%
What is the purpose of a first-pass flow study with 99mTc sestamibi?
To evaluate heart function and ejection fraction
Why is 99mTc sestamibi used in place of 201-TI in obese patients?
So that a higher dose may be administered for clearer imaging results
What is the minimum dose recommended for pediatric patients for a 201-TI study?
300 mCi (11.1 MBq)
What is the adult dose for a stress study with 201-TI?
3 mCi (111 MBq)
Test your knowledge of Gated Radionuclide Angiography (RNA), a technique used to measure left ventricular ejection fraction and evaluate left ventricular regional wall motion. Learn about the requirements and process of RNA, including the use of tracers and multi-gated acquisition.
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