Review of laser speckle-based analysis in medical imaging.
Speckle pattern forms when a rough object is illuminated with coherent light (laser) and the backscattered radiation is imaged on a screen. The pattern changes over time due to movement in the object. Such time-integrate speckle pattern can be statistically analyzed to reveal the flow profile. For h...
| Publicado en: | Medical & Biological Engineering & Computing Vol. 50; no. 6; pp. 547 - 559 |
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| Autores principales: | , , , , , |
| Formato: | review Journal Article |
| Publicado: |
Springer Nature
Jun2012
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| 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=104451368&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104451368 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 01400118 PO0 jtl: Medical & Biological Engineering & Computing issn: 01400118 maglogo: N pubinfo: dt: Jun2012 vid: 50 iid: 6 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 104451368 NLM22476712 2011562927 10.1007/s11517-012-0902-z NLM22476712 104451368 ppf: 547 ppct: 12 formats: fmt: @attributes: type: P tig: atl: Review of laser speckle-based analysis in medical imaging. aug: au: Basak K Manjunatha M Dutta PK Basak, Kausik Manjunatha, M Dutta, Pranab Kumar affil: School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur 721302, India sug: subj: Diagnosis, Cardiovascular Methods Animals Blood Flow Velocity Physiology Cerebrovascular Circulation Physiology Image Interpretation, Computer Assisted Methods Microcirculation Physiology Skin Blood Supply ab: Speckle pattern forms when a rough object is illuminated with coherent light (laser) and the backscattered radiation is imaged on a screen. The pattern changes over time due to movement in the object. Such time-integrate speckle pattern can be statistically analyzed to reveal the flow profile. For higher velocity the speckle contrast gets reduced. This theory can be utilized for tissue perfusion in capillaries of human skin tissue and cerebral blood flow mapping in rodents. Early, the technique was suffered from low resolution and computational intricacies for real-time monitoring purpose. However, modern engineering has made it feasible for real-time monitoring in microcirculation imaging with improved resolution. This review illustrates several modifications over classical technique done by many researchers. Recent advances in speckle contrast methods gain major interest, leading towards practical implementation of this technique. The review also brings out the scopes of laser speckle-based analysis in various medical applications. pubtype: Academic Journal doctype: review Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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