Vascular

Pulmonary artery: R/O pulmonary embolism

Specific Anatomic Region

Pulmonary Artery

Application

R/O pulmonary embolism

Author

Remy-Jardin M et al.

Reference Source

Radiology 1992; 185:381-387 and Radiology 1996; 200:699-706

Scanner Used

Siemens Somatom Plus

Injection Rate

7ml/sec

Contrast Volume and Type

120ml of Telebrix-30

Area Scanned

Level of aortic arch through lung bases

Scan Delay

10sec

Length of Spiral (time)

24-32sec

Slice Thickness

3-5mm

Table Speed/Pitch

5mm/sec with a pitch of 1

Reconstruction Interval

2-3mm

3D Technique Used

None

Comment:

• Scanning is done from the aortic arch through the pulmonary vessels. With newer Spiral CT scanners a collimation of 3mm is preferred.
• We do not ever inject at 7ml/sec and prefer 3ml/sec for PE studies