Which agent is more stable?

Which of the following tracers is used in the evaluation of parkinson’s disease?

A positive finding of a BBB agent cerebral death on an anterior cerebral radionuclide angiogram is made when the tracer bolus

In a normal 24-hour radionuclide cisternogram, there is ?? activity within the ventricles.

The “hot nose” sign may be seen in brain death and is due to

These images were acquired using F-Dopa. What was this study most likely being used to assess?  

White matter has about 4 times greater blood flow than grey matter.

Cerebrospinal fluid is produced within the

SPECT DatScans in patients with Parkinson’s disease show

An HMPAO image is normal if there is no activity in the brain.