| Routine chest and abdominal high-pitch CT: An alternative low dose protocol with preserved image quality. | |
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MedLine Citation:
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PMID: 22226852 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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OBJECTIVE: To investigate the radiation dose and image quality of the high-pitch dual source computer tomography (DSCT) for routine chest and abdominal scans. METHODS: 130 consecutive patients (62 female, 68 male, median age 55 years) were included. All patients underwent 128-slice high-pitch DSCT (chest n=99; abdomen n=84) at a pitch of 3.2. Two observers independently rated image quality using a 4-point score (1: excellent to 4: non-diagnostic). Image noise was measured and operational radiation dose quantities were recorded. An additional group of 132 patients (chest, n=80; abdomen n=52) scanned with standard-pitch CT matched for age, gender, and body mass index (BMI) served as control group. RESULTS: Interobserver agreement for image quality rating was good (k=0.74). Subjective image quality of high-pitch CT was diagnostic in all patients (median score chest; 2, median score abdomen: 2). Image noise of high-pitch CT was comparable to standard-pitch for the chest (p=0.32) but increased in the abdomen (p<0.0001). For high-pitch CT radiation dose was 4.4±0.9mSv (chest) and 6.5±1.2mSv (abdomen). These values were significantly lower compared to standard-pitch CT (chest: 5.5±1.2mSv; abdomen: 11.3±3.8mSv). CONCLUSION: Based on the technical background high-pitch dual source CT may serve as an alternative scan mode for low radiation dose routine chest and abdominal CT. |
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Authors:
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Nadja A Amacker; Caecilia Mader; Hatem Alkadhi; Sebastian Leschka; Thomas Frauenfelder |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-6 |
Journal Detail:
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Title: European journal of radiology Volume: - ISSN: 1872-7727 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-1-9 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8106411 Medline TA: Eur J Radiol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Elsevier Ireland Ltd. All rights reserved. |
Affiliation:
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Institute of Diagnostic and Interventional Radiology, University Hospital Zürich, Rämistrasse 101, Zürich, CH-8091, Switzerland. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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