| Image quality of high-resolution CT with 16-channel multidetector-row CT: comparison between helical scan and conventional step-shoot scan. | |
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MedLine Citation:
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PMID: 16555561 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: The aim of this study was to evaluate the image quality of high-resolution CT (HRCT) reconstructed from volumetric data with 16-channel multidetector-row CT (MDCT). SUBJECTS AND METHODS: Eleven autopsy lungs that were diagnosed histopathologically were scanned by 16-channel MDCT with the step-and-shoot scan mode and three helical scan modes. Each helical mode had each size of focal spot, pitch, and time of gantry rotation. HRCT images were reconstructed from the volumetric data with each helical mode and axial sequence data. Two observers evaluated the image quality and noted the most appropriate diagnosis for each imaging. RESULTS: Visualization of abnormal structures with one helical mode was equal to those with axial mode, whereas those with the other two helical modes were inferior to those with axial mode (Wilcoxon signed rank test; p<0.0001). There was no significant difference in diagnostic efficacy between modes. CONCLUSION: The image quality of HRCT with appropriate helical mode is equal to that with axial mode and diagnostic efficacy is equal among all modes. These results may indicate that sufficient HRCT images can be obtained by only one helical scan without the addition of conventional axial scans. |
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Authors:
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Hiromitsu Sumikawa; Takeshi Johkoh; Mitsuhiro Koyama; Takenori Kozuka; Minako Ikemoto; Atsuo Inoue; Sachiko Murai; Mitsuko Tsubamoto; Osamu Honda; Noriyuki Tomiyama; Seiki Hamada; Hironobu Nakamura; Hiroaki Narita |
Publication Detail:
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Type: Comparative Study; Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Radiation medicine Volume: 23 ISSN: 0288-2043 ISO Abbreviation: Radiat Med Publication Date: 2005 Dec |
Date Detail:
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Created Date: 2006-03-24 Completed Date: 2006-04-07 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8412264 Medline TA: Radiat Med Country: Japan |
Other Details:
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Languages: eng Pagination: 539-44 Citation Subset: IM |
Affiliation:
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Department of Radiology, Osaka University Graduate School of Medicine, Suita 565-0825, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Cadaver Humans Lung / radiography* Lung Diseases / radiography Observer Variation Tomography, Spiral Computed* Tomography, X-Ray Computed* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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