Skip Navigation LinksHome > May/June 2011 - Volume 35 - Issue 3 > Use of High-Pitch Dual-Source Computed Tomography of the Abd...
Journal of Computer Assisted Tomography:
doi: 10.1097/RCT.0b013e31821a02c8
Abdominal Imaging

Use of High-Pitch Dual-Source Computed Tomography of the Abdomen and Pelvis to Markedly Reduce Scan Time: Clinical Feasibility Study

Hardie, Andrew D. MD; Mayes, Nicholas MD; Boulter, Daniel J. MD

Collapse Box


Background: Increasing image pitch in computed tomographic (CT) imaging is a method through which scan time can be reduced, which can reduce motion artifacts. In this study, we assess the clinical feasibility of ultrahigh-pitch CT imaging made possible by dual-source CT.

Methods: Image pitch, total scan time, and image quality assessments were compared between 45 patients who underwent a high-pitch dual-source CT and 34 patients imaged by standard CT technique. Image noise and diagnostic image quality were assessed by 2 independent blinded readers on a 5-point scale.

Results: Mean pitch of high-pitch CT was 2.5 (mean scan time, 1.9 seconds) compared with the standard CT mean pitch of 0.6 (mean scan time, 9.8 seconds). There was no statistically significant difference in image noise between high-pitch CT (12.6) and standard CT (12.0); P > 0.3. Although reader 1 rated standard CT as superior to high-pitch CT (P 0.005), reader 2 rated no significant difference. No high-pitch CT studies were rated as limited diagnostically by either reader.

Conclusion: High-pitch dual-source CT can reduce scan time while leading to minor losses of image quality, which may be useful in some patients.

© 2011 Lippincott Williams & Wilkins, Inc.



Article Tools


Article Level Metrics

Search for Similar Articles
You may search for similar articles that contain these same keywords or you may modify the keyword list to augment your search.