Development of variable pitch factor scanning for multislice computed tomography.

Area of Science:

• Medical Imaging
• Radiology
• Computed Tomography

Background:

• Multislice computed tomography (MSCT) scanners allow continuous chest and abdominal scanning.
• Conventional scanning requires two separate passes with different pitch factors for cardiac and abdominal regions.

Purpose of the Study:

• To develop and evaluate a novel variable pitch factor scanning technique.
• To achieve continuous imaging from the heart to the abdomen in a single scan.

Main Methods:

• A 64-row MSCT scanner was used.
• Phantom studies (bead, comb, angled gold wire) were performed.
• Spatial resolution and image continuity along the body axis were assessed.

Main Results:

• Spatial resolution in the body axis direction remained unchanged.
• Image continuity in the body axis direction was maintained.
• Reconstruction algorithms accounted for cone angle variations.

Conclusions:

• Variable pitch factor scanning is a valuable technique for single-scan, continuous heart-to-abdomen imaging.
• This method enhances efficiency in MSCT procedures.