Specific Anatomic Region Chest
Application R/O AVM
Author Elliot K. Fishman, MD
Reference Source JHU Protocol
Scanner Used Siemens Sensation 64
KV/Effective mAs/Rotation time (sec) 120/200/0.33
Detector Collimation (mm) 0.6
Slice Thickness (mm) 3 and 0.75
Pitch 0.75
Kernel 30
Reconstruction Interval 2 and .5
Image Order (acquisition) Cr-ca
Oral Contrast N/A
IV contrast volume and type 100 cc of Omnipaque-350
Injection Rate 3 cc/sec
Scan delay (sec) 25 and 45
3D technique used VRT and MIP
AVMs can be recognized, even on non-contrast CTs, but with contrast the definition is obviously better. VRT and MIP are critical to detect even the small AVMs.