Bub's testing today-MyocardioPerfusion Imaging

At first I thought it was Nuclear Ventriculography, but now I realize that it's only Nuclear Cardiac Stress Testing, aka MyocardioPerfusion Imaging.
It's to test how well blood is flowing through his heart & how his heart is functioning during activity and during rest. So far, he's passed every test with flying colors, even without studying (a little humor there).
It takes about a day, and allows imaging done of the heart during stress and during rest. The pics are called 'stress images' and there are always 2 sets done; sometimes the rest imaging is first, then the activity imaging, sometimes it's the other way around.

He couldn't eat past midnight but can drink water. After the first 'stress' test, he can eat.

He's going in to the doctor, will get an IV put in and will go on the treadmill to get his HR up. When he can't go any more on the treadmill, a radiotracer such as 'Technetium MIBI or MYOVIEW is injected immediately after getting off and imaging is done (pics of the pericardium area). This is to determine how well blood is flowing through the heart during activity (stress).

The IV will stay in all day because of the possibility of more radiotracer needed for the 2nd set of imaging.
Later on this afternoon he'll go back in and more 'redistribution' 'variously delayed' or 'rest' imaging will be done.

It's impossible to change the appointment times-the radiologist who specializes in these tests is booked for specific times, unlike a regular doctor who you can see almost anytime.
The testee has to pretty much block out a 6-8 hour timeframe to allow for both sets of tests' time spread.

Here's where I got the info, along with querying Bub...
http://www.myheartdoctor.net/myocardial_perfusion.htm
http://www.mikety.net/pted/exams/stressA7/html
http://www.cava.cc/mpst.htm