18351421

Source:http://linkedlifedata.com/resource/pubmed/id/18351421

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Predicate	Object
rdf:type	pubmed:Citation
lifeskim:mentions	umls-concept:C0002979, umls-concept:C0205042, umls-concept:C1527148
pubmed:issue	3
pubmed:dateCreated	2009-5-8
pubmed:abstractText	The purpose of this research is to develop a new method of digital subtraction angiography (DSA) that can be applied to real time with reducing motion artifacts caused by heart movement and respiration. To create the mask image for DSA, the maximum pixel value at each pixel (which is the opposite pixel value to that of a vessel filled by contrast medium) was selected from the previous 14 image frames. The search area for the maximum pixel value was selected using the value of the standard deviation (SD) for each pixel from the previous 14 image frames. When the SD value in the 14 frames was greater than a threshold level, the search area of the maximum value became 1 pixel x 1 pixel x 14 frames; otherwise, 7 pixels x 7 pixels x 7 frames. The image quality of new DSA was evaluated on 20 coronary arteriogram images, including various degrees of occlusion or stenosis. The results indicated a considerable improvement in DSA image quality; thus, the coronary arteries, carotid artery, and vein were clearly enhanced.
pubmed:commentsCorrections	http://linkedlifedata.com/resource/pubmed/commentcorrection/18351421-10342250, http://linkedlifedata.com/resource/pubmed/commentcorrection/18351421-11274572, http://linkedlifedata.com/resource/pubmed/commentcorrection/18351421-2202192, http://linkedlifedata.com/resource/pubmed/commentcorrection/18351421-2973213, http://linkedlifedata.com/resource/pubmed/commentcorrection/18351421-3538137, http://linkedlifedata.com/resource/pubmed/commentcorrection/18351421-3895876, http://linkedlifedata.com/resource/pubmed/commentcorrection/18351421-3898424, http://linkedlifedata.com/resource/pubmed/commentcorrection/18351421-3904369, http://linkedlifedata.com/resource/pubmed/commentcorrection/18351421-6755787, http://linkedlifedata.com/resource/pubmed/commentcorrection/18351421-6779519, http://linkedlifedata.com/resource/pubmed/commentcorrection/18351421-7954311, http://linkedlifedata.com/resource/pubmed/commentcorrection/18351421-8635272, http://linkedlifedata.com/resource/pubmed/commentcorrection/18351421-9502681
pubmed:language	eng
pubmed:journal	http://linkedlifedata.com/resource/pubmed/journal/9100529
pubmed:citationSubset	IM
pubmed:status	MEDLINE
pubmed:month	Jun
pubmed:issn	1618-727X
pubmed:author	pubmed-author:HaradaKengoK, pubmed-author:IshidaTakayukiT, pubmed-author:IshiharaMasaharuM, pubmed-author:KagemotoMasayukiM, pubmed-author:OkuraYasuhikoY, pubmed-author:YamamotoMegumiM
pubmed:issnType	Electronic
pubmed:volume	22
pubmed:owner	NLM
pubmed:authorsComplete	Y
pubmed:pagination	319-25
pubmed:dateRevised	2011-7-26
pubmed:meshHeading	pubmed-meshheading:18351421-Angiography, Digital Subtraction, pubmed-meshheading:18351421-Artifacts, pubmed-meshheading:18351421-Coronary Angiography, pubmed-meshheading:18351421-Humans, pubmed-meshheading:18351421-Image Processing, Computer-Assisted, pubmed-meshheading:18351421-Observer Variation
pubmed:year	2009
pubmed:articleTitle	Development of digital subtraction angiography for coronary artery.
pubmed:affiliation	Major in Medical Engineering and Technology, Graduate Course in Integrated Human Studies, Hiroshima International University, 555-36 Kurose-Gakuendai, Higashi, Hiroshima, Japan. m-yamamo@hs.hirokoku-u.ac.jp
pubmed:publicationType	Journal Article, Evaluation Studies