Quantitative texture analysis in two-dimensional echocardiography: application to the diagnosis of myocardial amyloidosis.
J Am Coll Cardiol
; 14(3): 666-71, 1989 Sep.
Article
em En
| MEDLINE
| ID: mdl-2768715
ABSTRACT
Qualitative and subjective analysis of two-dimensional echocardiographic images of the myocardial wall allows one to identify amyloid heart disease; the quantitative analysis of regional image texture might be an accurate method to differentiate normal from amyloid myocardial structures. To test this hypothesis, two-dimensional echocardiograms of nine normal subjects and six patients with histologically documented amyloid heart disease were evaluated. Quantitative texture measurements of the first order (mean gray level, skewness, kurtosis, energy and entropy) overlapped between the two groups. Among the second order statistics variables, entropy was significantly and consistently higher in amyloid versus normal patient data (septum in parasternal long-axis view 6.3 +/- 0.3 versus 5.9 +/- 0.4; septum in apical four chamber view 6.2 +/- 0.2 versus 5.8 +/- 0.3). Therefore, amyloid-involved myocardial walls show ultrasound image texture alterations that may be quantified with digital image analysis techniques.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ecocardiografia Doppler
/
Cardiopatias
/
Amiloidose
Tipo de estudo:
Diagnostic_studies
/
Prognostic_studies
/
Qualitative_research
Limite:
Adult
/
Aged
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
J Am Coll Cardiol
Ano de publicação:
1989
Tipo de documento:
Article
País de afiliação:
Itália