99mTc-sestamibi can improve the inferior attenuation of TL-201 myocardial spect imaging.
Int J Card Imaging
; 9(2): 87-92, 1993 Jun.
Article
em En
| MEDLINE
| ID: mdl-8331307
ABSTRACT
Tl-201 myocardial scintigraphy (Tl study) tends to be attenuated by soft tissues (such as the diaphragm) due to its low energy emission. 99mTc-sestamibi (2-methoxy isobutyl isonitrile) is a relatively new agent with a higher energy emission and this characteristic accounts for the higher quality of 99mTc-sestamibi images. The purpose of this study is to evaluate the ability of 99mTc-sestamibi in alleviating the inferior attenuation of Tl studies. 99mTc-sestamibi SPECT myocardial scintigraphy was performed on 13 patients with inferior wall perfusion defects as determined by Tl study (but with normal coronary artery as evidenced by cardiac catheterization). All patients underwent Tl SPECT study using a standard procedure. Same-day protocol (rest-stress sequence) was used for 99mTc-sestamibi SPECT imaging. All images were analyzed by two independent observers. The results of our study reveal that 99mTc-sestamibi produced better images. The inferior wall perfusion defects in the T1 study were noted in one case only (1/13) in the 99mTc-sestamibi study. Our study suggests that 99mTc-sestamibi can remarkably reduce the inferior attenuation of Tl study.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Radioisótopos de Tálio
/
Tomografia Computadorizada de Emissão de Fóton Único
/
Tecnécio Tc 99m Sestamibi
/
Coração
/
Angina Pectoris
Limite:
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Int J Card Imaging
Assunto da revista:
CARDIOLOGIA
/
DIAGNOSTICO POR IMAGEM
Ano de publicação:
1993
Tipo de documento:
Article
País de afiliação:
Taiwan