Development of digital subtraction angiography for coronary artery.
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 pi...
| Publicado en: | Journal of Digital Imaging Vol. 22; no. 3; pp. 319 - 326 |
|---|---|
| Autores principales: | , , , , , |
| Formato: | algorithm diagnostic images research Journal Article |
| Publicado: |
Springer Nature
Jun2009
|
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105525684&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105525684 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 08971889 DOQ jtl: Journal of Digital Imaging issn: 08971889 maglogo: N pubinfo: dt: Jun2009 vid: 22 iid: 3 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 105525684 2010276425 10.1007/s10278-008-9108-1 NLM18351421 105525684 ppf: 319 ppct: 7 formats: fmt: @attributes: type: P tig: atl: Development of digital subtraction angiography for coronary artery. aug: au: Yamamoto M Okura Y Ishihara M Kagemoto M Harada K Ishida T affil: 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 sug: subj: Angiography, Digital Subtraction Methods Coronary Vessels Analysis Radiographic Magnification Artifacts Evaluation Research Image Enhancement Software Human ab: 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. pubtype: Academic Journal doctype: algorithm diagnostic images research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|