Specific Anatomic Region

Lung Parenchyma

Application

R/O lung metastases

Author

Fishman EK

Reference Source

Personal communication

Scanner Used

Siemens Somatom Plus-4

Injection Rate

2cc/sec

Contrast Volume and Type

100-110cc of Omnipaque 350

Area Scanned

Entire lung fields

Scan Delay

40sec

Length of Spiral (time)

up to 40sec

Slice Thickness

5mm

Table Speed/Pitch

8mm/sec or a pitch of 1.6

Reconstruction Interval

5mm

3D Technique Used

Rarely needed

Comment: Although for detection of lung nodules CT without contrast is in theory okay, IV contrast helps to better stage the mediastinum and hilum. In select cases reconstruction at 3mm intervals can be done to look for very small nodules.