[Computer-aided detection of metastatic brain tumors in magnetic resonance images].
Nihon Hoshasen Gijutsu Gakkai Zasshi
; 69(6): 632-40, 2013 Jun.
Article
em Ja
| MEDLINE
| ID: mdl-23782775
ABSTRACT
The fact that accurate detection of metastatic brain tumors is important for making decisions on the treatment course of patients prompted us to develop a computer-aided diagnostic scheme for detecting metastatic brain tumors. In this paper, we first describe how we extracted the cerebral parenchyma region using a standard deviation filter. Second, initial candidates for tumors were decided by sphericity and cross-correlation value with a simulated ring template. Third, we made true positive and false positive templates obtained from actual clinical images and applied the template matching technique to them. Finally, we detected metastatic tumors using these two characteristics. Our improved method was applied to 13 cases with 97 brain metastases. Sensitivity of detection of metastatic brain tumors was 80.4%, with 5.6 false positives per patient. Our proposed method has potential for detection of metastatic brain tumors in brain magnetic resonance (MR) images.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Neoplasias Encefálicas
/
Imageamento por Ressonância Magnética
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Diagnóstico por Computador
Tipo de estudo:
Diagnostic_studies
/
Prognostic_studies
Limite:
Aged
/
Aged80
/
Female
/
Humans
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Male
/
Middle aged
Idioma:
Ja
Revista:
Nihon Hoshasen Gijutsu Gakkai Zasshi
Ano de publicação:
2013
Tipo de documento:
Article