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  • perfusion
  • In the ventilation phase of a ventilation/perfusion scan, a gaseous radionuclide xenon or technetium DTPA in an aerosol form (or ideally using Technegas, a radioaerosol invented in Australia by Dr Bill Burch and Dr Richard Fawdry) is inhaled by the patient through a mouthpiece or mask that covers the nose and mouth. (wikipedia.org)

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  • tissue
  • Here, the premise was that restoration of blood flow to viable ischemic tissue will result in restoration of oxidative metabolism and, therefore, normal contractile function. (onlinejacc.org)
  • To detect metastases/function of thyroid, the isotopes iodine-131 or technetium-99m is generally used, and for this purpose the iodide isotope does not need to be attached to another protein or molecule, because thyroid tissue takes up free iodide actively. (wikipedia.org)
  • Tenecteplase is a tissue plasminogen activator (tPA), prescribed for preventing death from acute myocardial infarction (sudden heart attack). (medindia.net)
  • nuclear
  • TechneKow-CS generator", the first commercial Tc-99m generator, was produced by Nuclear Consultants, Inc. (St. Louis, Missouri) and Union Carbide Nuclear Corporation (Tuxedo, New York). (wikipedia.org)
  • ischemia
  • citation needed] Sestamibi was previously thought to not redistribute because earlier studies looked at individuals with no ischemia. (wikipedia.org)
  • 7 Although the existence of lethal reperfusion injury has been much debated, 8 Zhao et al 9 recently demonstrated in the dog model that repetition of brief episodes of ischemia immediately at the onset of reperfusion after a prolonged ischemic insult can dramatically reduce infarct size. (ahajournals.org)
  • stress
  • Following this, the heart rate is raised to induce myocardial stress, either by exercise or pharmacologically with adenosine, dobutamine or dipyridamole (aminophylline can be used to reverse the effects of dipyridamole). (wikipedia.org)
  • persistent
  • Our objective was to determine whether ischemic postconditioning could afford (1) a persistent infarct size limitation and (2) an improved recovery of myocardial contractile function several months after infarction. (ahajournals.org)
  • contractile
  • In short, a striking system of checks and balances regulates contractile function in the heart and metabolism is at the center of the whole system. (onlinejacc.org)
  • conditions
  • In order to contract under constantly changing environmental conditions, the healthy heart derives its energy from a variety of oxidizable organic compounds ( 1 ). (onlinejacc.org)
  • study
  • In Addition, a Determination of the Safety of Sestamibi Will be Evaluated at the End of the Study Through Adverse and Serious Adverse Events Reported and Evaluating Vital Signs, ECGs, Physical Exams and Laboratory Tests for Each Subject. (clinicaltrials.gov)
  • blood flow
  • Various mathematical models can then be used to process the raw temporal data to ascertain quantitative information such as rate of cerebral blood flow (CBF) following an ischemic stroke or aneurysmal subarachnoid hemorrhage. (wikipedia.org)
  • rates
  • Because oxygen extraction by the heart is nearly complete, increased rates of oxygen consumption can only be met by an increase in coronary flow ( 9 ). (onlinejacc.org)
  • among
  • Later in 1940, Emilio Segrè and Chien-Shiung Wu published the experimental results of the analysis of fission products of uranium-235, among which was present molybdenum-99, and detected the 6-h activity of element 43, later labelled as technetium-99m. (wikipedia.org)
  • Tc-99m remained a scientific curiosity until the 1950s when Powell Richards realized the potential of technetium-99m as a medical radiotracer and promoted its use among the medical community. (wikipedia.org)
  • death
  • The term programmed cell survival contrasts programmed cell death or apoptosis, which occurs in the maladapted, failing heart. (onlinejacc.org)