[Development of automatic analysis for dynamic renal function study using computed tomographic (CT) images].
Nihon Hoshasen Gijutsu Gakkai Zasshi
; 63(12): 1377-81, 2007 Dec 20.
Article
em Ja
| MEDLINE
| ID: mdl-18310998
ABSTRACT
Determination of the region of interest (ROI) for dynamic renal function has been highly discordant among operators because of the dependence on factors such as the rate of injection of radioactive medicines, constitution, and renal function. To simplify this problem, we developed a computer algorithm that provides automatic analysis for both localization of the kidney and automatic determination of ROIs using computed tomographic (CT) images. The bilateral kidneys were extracted from enhanced CT images, and the CT pixel size was adjusted to dynamic renal function images. The template-matching technique was used for these images, and the kidney renal location was analyzed on additional functional images constructed by dynamic renal function images. As a result, we were able to obtain time-activity curves of both renal function and quantified glomerular filtration rate (GFR). In conclusion, the computer algorithm we developed was considered to provide reliable results, apart from the variability among operators, because of its good reproducibility.
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Base de dados:
MEDLINE
Assunto principal:
Renografia por Radioisótopo
/
Tomografia Computadorizada por Raios X
Limite:
Adult
/
Humans
/
Male
Idioma:
Ja
Ano de publicação:
2007
Tipo de documento:
Article