| Helical computed tomography of the abdomen: evaluation of image quality using 1.0, 1.3, and 1.5 pitches. | |
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MedLine Citation:
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PMID: 11952269 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: The purpose of this study was to investigate whether trained radiologists can distinguish minor differences among computed tomography (CT) images of extended helical pitches of 1.0 to 1.5. METHODS: Between September 2000 and February 2001, 72 patients were randomized into 1 of 3 equal groups: helical pitches of 1.0, 1.3, and 1.5. The imaging parameters of all patients were kept constant. Twelve of the 72 patients were excluded because of various pathological conditions. In a total, 60 examinations were enrolled in the evaluation study. Three radiologists blinded to the image parameters were asked to independently evaluate 9 normal structures and overall images of 60 studies using a scale from 1 (worst) to 5 (best). RESULTS: There were no statistically significant differences in evaluation of image quality among helical pitches 1.0, 1.3, and 1.5 of abdominal CT when assessing 9 normal structures and overall images independently (p > 0.05). CONCLUSIONS: Abdominal CT performed with helical pitches of 1.0, 1.3, and 1.5 were equivalent in this study. With the use of a helical pitch greater than 1, clinicians can benefit from increased scan coverage in less time and with less radiation than can be achieved with standard helical pitch-1.0 protocols. |
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Authors:
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Yu-Chun Lin; Koon-Kwan Ng; Jeng-Hwei Tseng; Mun-Ching Wong; Tung-Chung Lai; Yung-Liang Wan |
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Publication Detail:
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Type: Clinical Trial; Journal Article; Randomized Controlled Trial |
Journal Detail:
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Title: Chang Gung medical journal Volume: 25 ISSN: 2072-0939 ISO Abbreviation: Chang Gung Med J Publication Date: 2002 Feb |
Date Detail:
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Created Date: 2002-04-15 Completed Date: 2002-04-25 Revised Date: 2008-12-16 |
Medline Journal Info:
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Nlm Unique ID: 101088034 Medline TA: Chang Gung Med J Country: China (Republic: 1949- ) |
Other Details:
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Languages: eng Pagination: 104-9 Citation Subset: IM |
Affiliation:
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First Department of Diagnostic Radiology, Chang Gung Memorial Hospital, Taipei, Taiwan, ROC. |
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Female Humans Male Middle Aged Radiography, Abdominal* Tomography, X-Ray Computed* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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