Specific Anatomic RegionPulmonary Artery
ApplicationR/O pulmonary embolism
AuthorFishman, E.K.
Reference SourcePersonal communication
Scanner UsedSiemens Somatom Plus 4
Injection Rate3ml/sec
Contrast Volume and Type120ml of Omnipaque 350
Area ScannedLevel of just above aortic arch through lung bases
Scan Delay25sec
Length of Spiral (time)30-35sec
Slice Thickness3mm
Table Speed/Pitch5mm/sec
Reconstruction Interval2mm
3D Technique UsedVolume rendering / MIP/ MPR
  • We routinely scan the patient caudal to cranially to optimize the patient's breathhold.
  • A key to detecting a P.E. is careful attention to proper filming technique. If images are too bright you can miss a P.E
  • It is often easier to read these studies on a workstation than on film.