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https://observatorio.fm.usp.br/handle/OPI/9710
Title: | Comparação da TCMD e da USIV em escala de cinza na Análise Quantitativa da Luz Coronária em Segmentos com ou sem Placas Ateroscleróticas |
Authors: | FALCAO, Joao L. A. A.; FALCAO, Breno A. A.; GURUDEVAN, Swaminatha V.; CAMPOS, Carlos M.; SILVA, Expedito R.; KALIL-FILHO, Roberto; ROCHITTE, Carlos E.; SHIOZAKI, Afonso A.; COELHO-FILHO, Otavio R.; LEMOS, Pedro A. |
Citation: | ARQUIVOS BRASILEIROS DE CARDIOLOGIA, v.104, n.4, p.315-322, 2015 |
Abstract: | Background: The diagnostic accuracy of 64-slice MDCT in comparison with IVUS has been poorly described and is mainly restricted to reports analyzing segments with documented atherosclerotic plaques. Objectives: We compared 64-slice multidetector computed tomography (MDCT) with gray scale intravascular ultrasound (IVUS) for the evaluation of coronary lumen dimensions in the context of a comprehensive analysis, including segments with absent or mild disease. Methods: The 64-slice MDCT was performed within 72 h before the IVUS imaging, which was obtained for at least one coronary, regardless of the presence of luminal stenosis at angiography. A total of 21 patients were included, with 70 imaged vessels (total length 114.6 +/- 38.3 mm per patient). A coronary plaque was diagnosed in segments with plaque burden > 40%. Results: At patient, vessel, and segment levels, average lumen area, minimal lumen area, and minimal lumen diameter were highly correlated between IVUS and 64-slice MDCT (p < 0.01). However, 64-slice MDCT tended to underestimate the lumen size with a relatively wide dispersion of the differences. The comparison between 64-slice MDCT and IVUS lumen measurements was not substantially affected by the presence or absence of an underlying plaque. In addition, 64-slice MDCT showed good global accuracy for the detection of IVUS parameters associated with flow-limiting lesions. Conclusions: In a comprehensive, multi-territory, and whole-artery analysis, the assessment of coronary lumen by 64-slice MDCT compared with coronary IVUS showed a good overall diagnostic ability, regardless of the presence or absence of underlying atherosclerotic plaques. |
Appears in Collections: | Artigos e Materiais de Revistas Científicas - FM/MCP Artigos e Materiais de Revistas Científicas - HC/InCor Artigos e Materiais de Revistas Científicas - LIM/11 Artigos e Materiais de Revistas Científicas - ODS/03 |
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File | Description | Size | Format | |
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art_FALCAO_Comparison_between_MDCT_and_Grayscale_IVUS_in_a_2015_eng.PDF | publishedVersion (English) | 784.51 kB | Adobe PDF | View/Open |
art_FALCAO_Comparison_between_MDCT_and_Grayscale_IVUS_in_a_2015_por.PDF | publishedVersion (Portuguese) | 819.99 kB | Adobe PDF | View/Open |
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