A computerized fluoroscopy system employing several time and energy subtraction algorithms has permitted good visualization of the cardiovascular system using peripheral intravenous iodine injections of about 1 cm**3/kg. Image contrast improvements of 8-16 over conventional fluoroscopy are common. Several canine and human imaging studies are described including visualization of myocardial infarctions as regions of anomalous image grey shade. The system employs a standard image intensified fluoroscopy system and a specially constructed real-time image processor. Quasimonoenergetic x-ray beams formed by filtration deliver typical doses of 400 mR/sec in adult human cardiac exams.
|Original language||English (US)|
|Number of pages||6|
|Journal||Proceedings of the Society of Photo-Optical Instrumentation Engineers|
|State||Published - Jan 1 1978|
|Event||Unknown conference - Stanford Univ, Calif|
Duration: Sep 11 1978 → Sep 12 1978
ASJC Scopus subject areas