protocol stuff Flashcards
dose of Tc-99m MAA administered
3-5 mCi
dose of Xe-133 administered
10-20 mCi
How long can you image DTPA
20-60 min once inhaled
dose of DTPA administered
30 mCi
dose of Tc-99m MDP
20 mCi
when do you image MDP
2-4 hours after injection
dose of captopril
25-50 mg
when should an ACE inhibitor be stopped prior to a MAG-3 captopril scan?
> 2days prior
when is lasix administered in a renogram
@ 20 min, 40 mg IV lasix is administered
after administration of lasix, normal clearance half time
<10-20 min is normal
> 20 min suggests obstruction
medication given for cerebral perfusion reserve
acetazolamide 1000mg
when are HMPAO or ECD injected for ictal imaging
within 30 seconds of the seizure
timing of FDG-PET brain imaging for suspected tumor versus radiation necrosis
1 and 4 hours
preparation prior to I-131 therapy
TSH > 30 (ideally 50)…..which can be achieved by stopping synthroid for 4 weeks….OR….two IM injections of thyrogen (recombinant TSH)
Timing of imaging of I-123 thyroid uptake scan
at 4 and 24 hrs
protocol/preparation for GI bleeding study
In vitro technique. 1-3 mL of anticoagulated blood mixed with stannous chloride and an oxidizing agent. Tc-99m is added and has a labeling efficiency of 95%. This takes 20 min
Length of time to do in vitro tagged RBC
20 min
HIDA protocol
NPO for > 6 hr, but must have eaten within 24 hr.
If a pt has been fasting for > 24 hr (or on TPN) what has to be done before HIDA scan?
administration of CCK (0.02 ug/kg given as a slow infusion) to empty the GB. Then you have to wait two hours before starting the HIDA
liver is visible in a normal HIDA scan in how many minutes?
5 min
GB is visible in a normal HIDA scan in how many minutes?
15 min
