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- Title
Use of thin-section, multidetector row helical CT images for coronal oblique reformations for optimal visualization of structures in the hepatoduodenal ligament.
- Authors
Faria, S.C.; Tamm, E.P.; DuBrow, R.; David, C.; Loyer, E.; Herron, D.; Sawaf, Y.; Ball, G.; Silverman, P.M.; Charnsangavej, C.
- Abstract
Multidetector row computed tomography (CT) can acquire abdominal images of unprecedented thinness in a single breath-hold. This study investigated whether acquiring source axial images at 1.25 mm as opposed to 2.5 mm would result in a perceptible difference in image quality for coronal oblique reformations. Similarly, the hypothesis that a slice pitch of 3:1 would be superior to 6:1 was evaluated. Twenty-nine CT studies were retrospectively evaluated. The images were divided into four groups: 1.25-mm axial images, pitch 3:1; 2.5-mm axial images, pitch 3:1; 1.25-mm axial images, pitch 6:1; and 2.5-mm axial images, pitch 6:1. Three radiologists evaluated by consensus the coronal oblique reformations for overall image quality and image quality of structures in the hepatoduodenal ligament and of nodal groups. Use of 1.25-mm rather than of 2.5-mm source axial images resulted in statistically significant better scores for overall image quality and visualization of the hepatic artery, portal vein, pancreatic duct, and nodal groups. However, a pitch of 3:1 rather than of 6:1 did not result in significant differences in ratings of image quality. Use of 1.25-mm rather than of 2.5-mm source axial images improves image quality when creating coronal oblique reformations for abdominal anatomy.
- Subjects
TOMOGRAPHY; MEDICAL radiography; ABDOMINAL diseases; ABDOMINAL radiography; RADIOGRAPHY; ANATOMY
- Publication
Abdominal Imaging, 2004, Vol 29, Issue 2, p231
- ISSN
0942-8925
- Publication type
journal article
- DOI
10.1007/s00261-003-0106-y