[201Tl myocardial SPECT. First experiences with a simultaneous transmission-emission acquisition protocol for patient-specific attenuated correction].
OBJECTIVE
In this study our first clinical experiences with simultaneous transmission and emission acquisition in 201 TI myocardial SPECT (T/E-SPECT) are discussed.


METHODS
The non-uniform attenuation (AK) was carried out with a triple-head camera (PRISM 3000, Picker Inc.) correction equipped with fanbeam collimators. A line source of 750 MBq 99mTc was used to construct the transmission profile. Prior to investigation patients got 80-120 MBq 201TI-chloride intravenously injected.


RESULTS
The study comprises the evaluation of 40 patients, derived from the clinical routine. The investigation followed an usual one day protocol. Our results using T/E-SPECT reveal an almost equilibrated activity distribution between anterior and posterior myocardial wall.


CONCLUSIONS
For this reason it is to be expected that T/E-SPECT provides more reliable information about the posterior myocardial wall, than the usual SPECT technique without attenuation correction.
Knesewitsch
P
P
Klinik und Poliklinik für Nuklearmedizin, Ludwig-Maximilians-Universität, München, Deutschland.
Walser
R
R
Kantlehner
R
R
Münzing
W
W
Hahn
K
K
D015902:Gamma Cameras; D006321:Heart / Q000000981:diagnostic imaging*; D006331:Heart Diseases / Q000000981:diagnostic imaging; D006801:Humans; D019047:Phantoms, Imaging; D015203:Reproducibility of Results; D013667:Technetium; D013794:Thallium Radioisotopes; D015899:Tomography, Emission-Computed, Single-Photon / Q000295:instrumentation* / Q000379:methods*
D013794:Thallium Radioisotopes; D013667:Technetium
201Ti-Myokard-SPECT. Erste Erfahrungen mit einem simultanen Transmission-Emission-Akquisitionsprotokoll zur patientenspezifischen Abschwächungskorrektur.