Pratical method of breast attenuation correction for cardiac spect

• Autor(a) principal: Oliveira, Anderson
• Data de Publicação: 2007
• Outros Autores: Meguerian, Berdj Aram, Santos, Gonçalo Rodrigues dos, Nogueira, Tindyua, Gutterres, Ricardo Fraga, Instituto de Engenharia Nuclear, Instituto Nacional do Câncer, Coordenação Geral de Instalações Médicas e Industriais
• Tipo de documento: Artigo de conferência
• Idioma: eng
• Título da fonte: Repositório Institucional do IEN
• Texto Completo: http://carpedien.ien.gov.br:8080/handle/ien/2548
• topic: INAC 2007; SPECT; Nuclear medicine; Cardiac procedures

The breast attenuation effects on SPECT (Single Photon Emission Tomography) myocardium perfusion procedures have been lately scope of continuous inquiry. The requested attenuation correction factors are usually achieved by transmission analysis, making up the exposure of a standard external source to the SPECT, as a routine step. However, its high cost makes this methodology not fully available to the most of nuclear medicines services in Brazil and abroad. To overcome the problem, a new trend is presented in this work, implementing computational models to balance the breast attenuation effects on the left ventricle anterior wall, during myocardium perfusion scintigraphy procedures with SPECT. A neural network was put on in order to provide the attenuation correction indexes, based upon the following patients individual biotypes features: mass, age, height, chest and breast thicknesses, heart size, as well as the imparted activity intake levels.