| The effect of adaptive iterative dose reduction on image quality in 320-detector row CT coronary angiography. | |
| | |
MedLine Citation:
|
PMID: 22253355 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
OBJECTIVE: To evaluate the effect of adaptive iterative dose reduction (AIDR) on image noise and image quality as compared with standard filtered back projection (FBP) in 320-detector row CT coronary angiography (CTCA). METHODS: 50 patients (14 females, mean age 68 ± 9 years) who underwent CTCA (100 kV or 120 kV, 400-580 mA) within a single heartbeat were enrolled. Studies were reconstructed with FBP and subsequently AIDR. Image noise, vessel contrast and contrast-to-noise ratio (CNR) in the coronary arteries were evaluated. Overall image quality for coronary arteries was assessed using a five-point scale (1, non-diagnostic; 5, excellent). RESULTS: All the examinations were performed in a single heartbeat. Image noise in the aorta was significantly lower in data sets reconstructed with AIDR than in those reconstructed with FBP (21.4 ± 3.1 HU vs 36.9 ± 4.5 HU; p<0.001). No significant differences were observed between FBP and AIDR for the mean vessel contrast (HU) in the proximal coronary arteries. Consequently, CNRs in the proximal coronary arteries were higher in the AIDR group than in the FBP group (p<0.001). The mean image quality score was improved by AIDR (3.75 ± 0.38 vs 4.24 ± 0.38; p<0.001). CONCLUSION: The use of AIDR reduces image noise and improves image quality in 320-detector row CTCA. |
| | |
Authors:
|
F Tatsugami; M Matsuki; G Nakai; Y Inada; S Kanazawa; Y Takeda; H Morita; H Takada; S Yoshikawa; K Fukumura; Y Narumi |
Related Documents
:
|
16207475 - Potential applications of flat-panel volumetric ct in morphologic and functional small ... 17667755 - Biodistribution and radiation dosimetry of 11c-harmine in baboons. 17633695 - Lung nodule detection via bayesian voxel labeling. 18215875 - Artificial convolution neural network techniques and applications for lung nodule detec... 19567825 - Nonlinear multisystem physiological dysregulation associated with frailty in older wome... 9544665 - Imaging of cerebral blood flow with technetium-99m-hmpao and technetium-99m-ecd: a comp... |
Publication Detail:
|
Type: Comparative Study; Evaluation Studies; Journal Article Date: 2012-01-17 |
Journal Detail:
|
Title: The British journal of radiology Volume: 85 ISSN: 1748-880X ISO Abbreviation: Br J Radiol Publication Date: 2012 Aug |
Date Detail:
|
Created Date: 2012-07-20 Completed Date: 2012-10-01 Revised Date: 2013-04-16 |
Medline Journal Info:
|
Nlm Unique ID: 0373125 Medline TA: Br J Radiol Country: England |
Other Details:
|
Languages: eng Pagination: e378-82 Citation Subset: AIM; IM |
Affiliation:
|
Department of Radiology, Osaka Medical College, Takatsuki City, Osaka, Japan. sa104@rg8.so-net.ne.jp |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Aged Aged, 80 and over Body Mass Index Clinical Protocols Coronary Angiography / methods*, standards Coronary Artery Disease / radiography* Female Heart Rate Humans Male Middle Aged Multidetector Computed Tomography / methods*, standards Observer Variation Radiation Dosage Signal-To-Noise Ratio |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Is there a role for free breathing non-contrast steady-state free precession renal MRA imaging for a...
Next Document: Outcomes After Stent Implantation for the Treatment of Congenital and Postoperative Pulmonary Vein S...