Accuracy and reproducibility of the assessment of the global ejection fraction using 195mAu and a single-crystal digital gamma camera: influence of collimator design.
Nuklearmedizin
; 26(4): 167-71, 1987 Aug.
Article
em En
| MEDLINE
| ID: mdl-3671098
A sequence of RAO first-pass studies (first with 99mTc and then twice with 195mAu) was performed in 18 normal volunteers and in 12 CAD patients using two different types of collimator for medium energy: a standard collimator (MEMS) and a special high-sensitivity collimator (MEHS). The following data were compared: the peak count rate, the net LV end-diastolic counts and the LVEF. Using MEMS the end-diastolic counts acquired were so low (12% of 99mTc average value) that EF standard deviation had a mean value of 0.061 (range 0.045-0.081). With MEHS the following results were obtained: 1. the peak count rate and LV net end-diastolic counts with 195mAu were 55% and 50% respectively, of 99mTc values; 2. a good correlation was shown between LVEF values either with 99mTc and 195mAu (r = .97), or with 195mAu sequential studies (r = .98).
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Volume Sistólico
/
Cintilografia
/
Radioisótopos de Ouro
/
Coração
Limite:
Adult
/
Female
/
Humans
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Male
/
Middle aged
Idioma:
En
Ano de publicação:
1987
Tipo de documento:
Article