General Rad Flashcards
What is the maximum iodine dose in 24 hours?
approx 80 g
How much IV contrast (in mL) is given for a typical CT AP?
100 mL
What is the rate of injection for CT AP?
3-5 mL/min
What is the timing for:
- Arterial phase?
- PVP?
- Delayed phase?
- Early arterial 15-20 sec
- Late arterial 35 sec
- PVP 70-80 sec
- Delayed 3-5 min
Timing for nephrographic phase?
100 sec post injection
When is pancreatic carcinoma best imaged?
35 sec post injection
When are hepatic mets best detected?
70-80 sec post injection
What is the commercial product name of the CT IV contrast agent used at TOH?
Isovue 370
What is the chemical name of the CT IV contrast agent used?
iopamidol
Is isovue 370 hypo, iso or hyperosmolar?
Hyperosmolar
How many grams of iodine are contained in 100cc of Isovue 370?
Issue = 370 mg iodine/mL
Therefore, 370 mg/mL x 100 mL = 37,000 mg = 37 g
Total volume of IV contrast needed for a CT PE?
Injection rate?
- Classically 80-100 cc, but 60-70 cc at TOH as of 2016
- Injected at 4-5 cc/sec, bolus tracking
Total volume of IV contrast needed for a CT AP?
Injection rate?
- 100 cc
- Injected at 2 cc/sec, 65 s delay for PVP
What is the COMMERCIAL PRODUCT name of the ORAL contrast agent used for abdominal CT at your institution?
Gastrografin
What is the CHEMICAL name of the oral contrast agent used for abdominal CT at your institution?
Diatrizoate meglumine sodium
