Document Detail


Real-time volumetric imaging of human heart without electrocardiographic gating by 256-detector row computed tomography: initial experience.
MedLine Citation:
PMID:  16163045     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: The feasibility of human cardiac imaging using a prototype 256-detector row cone-beam computed tomography (256CBCT) scanner without electrocardiographic gating was examined. METHODS: Two healthy male volunteers were examined by contrast-enhanced 256CBCT. The number of detectors was 912 x 256, each measuring approximately 0.5 mm x 0.5 mm at the center of rotation. The craniocaudal coverage was approximately 100 mm after reconstruction by the Feldkamp-Davis-Kress algorithm. The effective time resolution was 500 milliseconds using a half-scan algorithm. RESULTS: Serial enhancement of the left ventricular myocardium was detected. The right and left coronary arteries at proximal and distal segments were depicted without significant blurring. Although the left ventricular wall motion on cine images was not smooth over time, it was possible to measure ventricular volume and ejection fraction. CONCLUSIONS: Using the 256CBCT, it was possible to visualize the coronary arteries, myocardial perfusion, and ventricular contraction simultaneously during a single acquisition.
Authors:
Chisato Kondo; Shinichiro Mori; Masahiro Endo; Kiyoko Kusakabe; Naoki Suzuki; Asaki Hattori; Masahiro Kusakabe
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of computer assisted tomography     Volume:  29     ISSN:  0363-8715     ISO Abbreviation:  J Comput Assist Tomogr     Publication Date:    2005 Sep-Oct
Date Detail:
Created Date:  2005-09-15     Completed Date:  2005-11-10     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7703942     Medline TA:  J Comput Assist Tomogr     Country:  United States    
Other Details:
Languages:  eng     Pagination:  694-8     Citation Subset:  IM    
Affiliation:
Department of Radiology, Tokyo Women's Medical University School of Medicine, Tokyo, Japan. pkondou@rad.twmu.ac.jp
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MeSH Terms
Descriptor/Qualifier:
Algorithms
Contrast Media
Coronary Circulation / physiology*
Feasibility Studies
Heart / radiography*
Humans
Image Processing, Computer-Assisted
Male
Tomography, X-Ray Computed / methods*
Chemical
Reg. No./Substance:
0/Contrast Media

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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