title: [201Tl myocardial SPECT. First experiences with a simultaneous transmission-emission acquisition protocol for patient-specific attenuated correction].
abstract: 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.
authors.affiliation: Klinik und Poliklinik für Nuklearmedizin, Ludwig-Maximilians-Universität, München, Deutschland.
authors.forename: P
authors.initials: P
authors.lastname: Knesewitsch
authors.forename: R
authors.initials: R
authors.lastname: Walser
authors.forename: R
authors.initials: R
authors.lastname: Kantlehner
authors.forename: W
authors.initials: W
authors.lastname: Münzing
authors.forename: K
authors.initials: K
authors.lastname: Hahn
mesh_terms: 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*
chemical_list: D013794:Thallium Radioisotopes; D013667:Technetium
vernacular_title: 201Ti-Myokard-SPECT. Erste Erfahrungen mit einem simultanen Transmission-Emission-Akquisitionsprotokoll zur patientenspezifischen Abschwächungskorrektur.