Can dual-energy computed tomography improve visualization of hypoenhancing liver lesions in portal venous phase? Assessment of advanced image-based virtual monoenergetic images.
Clin Imaging
; 41: 118-124, 2017.
Article
em En
| MEDLINE
| ID: mdl-27840263
ABSTRACT
PURPOSE:
The purpose was to assess image quality of portal-venous phase dual-energy computed tomography (DECT) for liver lesions.METHODS:
We performed 120-kVp-equivalent linear-blended (LB) and monoenergetic reconstructions from 40 to 190 keV by standard (VMI) and advanced virtual monoenergetic (VMI+) methods. Diagnostic performance, and quantitative and qualitative image analyses were assessed and compared.RESULTS:
Liver contrast to noise ratio peaked at 40 keV_VMI+, while image quality and reader preference peaked at 50 keV_VMI+. 50 keV_VMI+ scored overall higher diagnostic performance lesion sensitivity 95.4% vs. 83.3% for both 75 keV_VMI and LB.CONCLUSIONS:
DECT improves assessment of hypoenhancing liver lesions on portal venous phase. 50 keV_VMI+ demonstrated the highest image quality and diagnostic performance over VMI and LB.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Veia Porta
/
Processamento de Imagem Assistida por Computador
/
Tomografia Computadorizada por Raios X
/
Imagem Radiográfica a Partir de Emissão de Duplo Fóton
/
Neoplasias Hepáticas
Tipo de estudo:
Diagnostic_studies
/
Observational_studies
/
Qualitative_research
Limite:
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article