Ultrasonic imaging of foreign inclusions and blood vessels through thick skull bones.
We report a new progress in the development of a portable ultrasonic transcranial imaging system, which is expected to significantly improve the clinical utility of transcranial diagnostic ultrasound. When conventional ultrasonic phased array and Doppler techniques are applied through thick skull bo...
| Publicado en: | Military Medicine pp. 104 - 109 |
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| Autores principales: | , , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Oxford University Press / USA
Mar2015 Supplement
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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=109707729&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 109707729 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00264075 4DV jtl: Military Medicine issn: 00264075 maglogo: N pubinfo: dt: Mar2015 Supplement pid: 622 pub: Oxford University Press / USA artinfo: ui: 109707729 101472825 NLM25747641 2012929687 10.7205/MILMED-D-14-00402 NLM25747641 109707729 ppf: 104 ppct: 5 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Ultrasonic imaging of foreign inclusions and blood vessels through thick skull bones. aug: au: Shapoori, Kiyanoosh Sadler, Jeffrey Ahmed, Zaki Wydra, Adrian Maeva, Elena Malyarenko, Eugene Maev, Roman sug: ab: We report a new progress in the development of a portable ultrasonic transcranial imaging system, which is expected to significantly improve the clinical utility of transcranial diagnostic ultrasound. When conventional ultrasonic phased array and Doppler techniques are applied through thick skull bones, the ultrasound field is attenuated, deflected, and defocused, leading to image distortion. To address these deficiencies, the ultrasonic transcranial imaging system implements two alternative ultrasonic methods. The first method improves detection of small foreign objects, such as bone fragments, pieces of shrapnel, or bullets, lodged in the brain tissue. Using adaptive beamforming, the method compensates for phase aberration induced by the skull and refocuses the distorted ultrasonic field at the desired location. The second method visualizes the blood flow through intact human skull using ultrasonic speckle reflections from the blood cells, platelets, or contrast agents. By analyzing these random temporal changes, it is possible to obtain 2D or 3D blood flow images, despite the adverse influence of the skull. Both methods were implemented on an advanced open platform phased array controller driving linear and matrix array probes. They were tested on realistic skull bone and head phantoms with foreign inclusions and blood vessel models. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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