Myocardial signal density levels and beam-hardening artifact attenuation using dual-energy computed tomography

The assessment of myocardial perfusion using single-energy (SE) imaging is influenced by beam-hardening artifacts (BHA). We sought to explore the ability of dual-energy (DE) imaging to attenuate the presence of BHA. Myocardial signal density (SD) was evaluated in 2240 myocardial segments (112 for ea...

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Detalles Bibliográficos
Autores: Rodriguez Granillo, Gaston Alfredo, Carrascosa, Patricia, Cipriano, Silvina, de Zan, Macarena, Deviggiano, Alejandro, Capunay, Carlos, Cury, Ricardo C.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2015
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/38900
Acceso en línea:http://hdl.handle.net/11336/38900
Access Level:acceso abierto
Palabra clave:Computed Tomography
Ischemia
Myocardial Infarction
Myocardial Perfusion
Perfusion Defect
https://purl.org/becyt/ford/3.2
https://purl.org/becyt/ford/3
Descripción
Sumario:The assessment of myocardial perfusion using single-energy (SE) imaging is influenced by beam-hardening artifacts (BHA). We sought to explore the ability of dual-energy (DE) imaging to attenuate the presence of BHA. Myocardial signal density (SD) was evaluated in 2240 myocardial segments (112 for each energy level) and in 320 American Heart Association segments among the SE group. Compared to DE reconstructions at the best energy level, SE acquisitions showed no significant differences overall regarding myocardial SD or signal-to-noise ratio. The segments most commonly affected by BHA showed significantly lower myocardial SD at the lowest energy levels, progressively normalizing at higher energy levels.

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