Primary Recon Parameters Workflow; Set The Slice Thickness; Set The Image Interval - GE Revolution CT User Manual

Table 22: Primary Recon collection – Helical
Element
Thickness
Recon Type
Recon Mode
IQ Enhance
Interval
ASiR-V
Window Width
Window Level
Flip / Rotate

6.3 Primary Recon parameters workflow

Most recon parameters are set from the protocol and from adjustments made with graphic lines
on the scout image. When setting recon parameters, it is important to know specifically what
you are looking for. If you are looking for fractures, you would want to use a different set of
parameters than if you were looking for a mass.

6.3.1 Set the Slice Thickness

Scan Settings window, click Primary Recon .
1. From the
2. Choose the
○ The smaller the slice thickness, the more technique you need to use. The thinner the
slice thickness, the higher the noise will be in the slice. Adjust protocol factors to provide
desired image quality and noise level for the acquisition.
○
A thinner slice provides better detail. However, contrast resolution will be decreased.

6.3.2 Set the Image Interval

The Image Interval is for Helical scans only and is automatically set to match the slice thickness
by the system. This is known as contiguous (back to back) scans. Use this procedure to set an
Image Interval if you want a contiguous, overlapped, or spacing (skip) in the scan prescription.
Interval .
1. Click
2. Type an interval value in mm.
For a Helical scan type, the table moves in mm per rotation, while exposing the patient.
○ The image interval defaults to equal the slice thickness (for primary reconstructions
only).
○ The maximum interval is twice the slice thickness.
○
The interval can be less than or greater than the slice thickness.
Chapter 11 Scan
Image thickness.
Reconstruction algorithm.
• Full
• Plus
See Section 1.6 for detailed information.
Image interval.
See Chapter 12, for detailed information.
Can be set for different groups.
Can be set for different groups.
See Section 1.8 for detailed information.
Thickness .
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