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Conference Paper: A timely computer-aided detection system for acute ischemic and hemorrhagic stroke on CT in an emergency environment

TitleA timely computer-aided detection system for acute ischemic and hemorrhagic stroke on CT in an emergency environment
Authors
Issue Date2008
PublisherRSNA 2008.
Citation
The 94th Scientific Assembly and Annual Meeting of the Radiological Society of North America (RSNA 2008), Chicago, IL., 30 November-5 December 2008. In RSNA 2008 Annual Meeting: Education Exhibits and Presentations Pamphlet, 2008, p. 9, no. LL-IN1105 How to Cite?
Abstract
BACKGROUND: When a patient is accepted in the emergency room suspected of stroke, time is of the most importance. The infarct brain area suffers irreparable damage as soon as three hours after the onset of stroke symptoms. Non-contrast CT scan is the standard first line of investigation used to identify hemorrhagic stroke cases. However, CT brain images do not show hyperacute ischemia and small hemorrhage clearly and thus may be missed by emergency physicians. We reported a timely computer-aided detection (CAD) system for small hemorrhages on CT that has been successfully developed as an aid to ER physicians to help improve detection for Acute Intracranial Hemorrhage (AIH). This CAD system has been enhanced for diagnosis of acute ischemic stroke in addition to hemorrhagic stroke, which becomes a more complete and clinically useful tool for assisting emergency physicians and radiologists. In the detection algorithm, brain matter is first segmented, realigned, and left-right brain symmetry is evaluated. As in the AIH system, the system confirms hemorrhagic stroke by detecting blood presence with anatomical and medical knowledge-based criteria. For detecting ischemia, signs such as regional hypodensity, blurring of grey and white matter differentiation, effacement of cerebral sulci, and hyperdensity in middle cerebral artery, are evaluated …
DescriptionStandalone Presentations: no. LL-IN1105
Persistent Identifierhttp://hdl.handle.net/10722/61919

 

DC FieldValueLanguage
dc.contributor.authorMa, KCen_HK
dc.contributor.authorLe, AHen_HK
dc.contributor.authorFernandez, JFen_HK
dc.contributor.authorChan, Ten_HK
dc.contributor.authorLiu, BJen_HK
dc.contributor.authorHuang, HKen_HK
dc.date.accessioned2010-07-13T03:50:07Z-
dc.date.available2010-07-13T03:50:07Z-
dc.date.issued2008en_HK
dc.identifier.citationThe 94th Scientific Assembly and Annual Meeting of the Radiological Society of North America (RSNA 2008), Chicago, IL., 30 November-5 December 2008. In RSNA 2008 Annual Meeting: Education Exhibits and Presentations Pamphlet, 2008, p. 9, no. LL-IN1105-
dc.identifier.urihttp://hdl.handle.net/10722/61919-
dc.descriptionStandalone Presentations: no. LL-IN1105en_HK
dc.description.abstractBACKGROUND: When a patient is accepted in the emergency room suspected of stroke, time is of the most importance. The infarct brain area suffers irreparable damage as soon as three hours after the onset of stroke symptoms. Non-contrast CT scan is the standard first line of investigation used to identify hemorrhagic stroke cases. However, CT brain images do not show hyperacute ischemia and small hemorrhage clearly and thus may be missed by emergency physicians. We reported a timely computer-aided detection (CAD) system for small hemorrhages on CT that has been successfully developed as an aid to ER physicians to help improve detection for Acute Intracranial Hemorrhage (AIH). This CAD system has been enhanced for diagnosis of acute ischemic stroke in addition to hemorrhagic stroke, which becomes a more complete and clinically useful tool for assisting emergency physicians and radiologists. In the detection algorithm, brain matter is first segmented, realigned, and left-right brain symmetry is evaluated. As in the AIH system, the system confirms hemorrhagic stroke by detecting blood presence with anatomical and medical knowledge-based criteria. For detecting ischemia, signs such as regional hypodensity, blurring of grey and white matter differentiation, effacement of cerebral sulci, and hyperdensity in middle cerebral artery, are evaluated …-
dc.languageengen_HK
dc.publisherRSNA 2008.-
dc.relation.ispartofRSNA 2008 Annual Meeting: Education Exhibits and Presentations Pamphlet-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleA timely computer-aided detection system for acute ischemic and hemorrhagic stroke on CT in an emergency environmenten_HK
dc.typeConference_Paperen_HK
dc.identifier.emailChan, T: taochan@hku.hken_HK
dc.identifier.authorityChan, T=rp00289en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.hkuros165197en_HK
dc.identifier.spage9-
dc.identifier.epage9-
dc.publisher.placeUnited States-

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