Document Detail

Evaluation of peripheral pulmonary arteries at 80 kV and at 140 kV: dual-energy computed tomography assessment in 51 patients.
MedLine Citation:
PMID:  19940672     Owner:  NLM     Status:  MEDLINE    
PURPOSE: To compare peripheral pulmonary artery image quality at 80 kVp and 140 kVp in the same patients. MATERIALS AND METHODS: Image quality of third-, fourth- and fifth-order arteries was assessed at 80 kV and 140 kV on 1-mm-thick transverse scans, generated from dual-source computed tomography (CT) acquisitions. RESULTS: The mean level of enhancement was significantly higher at 80 kV compared with 140 kV for the third-, fourth-, and fifth-order arteries (P < 0.0001). Despite a higher noise level at 80 kV (P < 0.0001), the signal-to-noise ratio and contrast-to-noise ratio were significantly higher at 80 kV than at 140 kV at the level of third-, fourth-, and fifth-order arteries (P < 0.0001). The mean vascular attenuation, mean signal-to-noise ratio and contrast-to-noise ratio for peripheral arteries were significantly superior at 80 kV in the 3 body mass index categories (P < 0.005). CONCLUSIONS: Eighty-kilovolt protocols significantly improve the image quality of peripheral pulmonary arteries on CT angiograms of the chest.
Andrei Gorgos; Martine Remy-Jardin; Alain Duhamel; Jean-Baptiste Faivre; Nunzia Tacelli; Val??rie Delannoy; Jacques Remy
Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Journal of computer assisted tomography     Volume:  33     ISSN:  1532-3145     ISO Abbreviation:  J Comput Assist Tomogr     Publication Date:    2009 Nov-Dec
Date Detail:
Created Date:  2009-11-26     Completed Date:  2010-01-07     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7703942     Medline TA:  J Comput Assist Tomogr     Country:  United States    
Other Details:
Languages:  eng     Pagination:  981-6     Citation Subset:  IM    
Department of Thoracic Imaging, Hospital Calmette, Lille, France.
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MeSH Terms
Aged, 80 and over
Body Mass Index
Middle Aged
Pulmonary Artery / radiography*
Radiographic Image Interpretation, Computer-Assisted
Retrospective Studies
Statistics, Nonparametric
Tomography, X-Ray Computed / methods*

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