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  • gamma
  • Promptly (on the order of picoseconds, on average) after excitation, the excited nuclear isomer de-excites (either directly or through a series of cascades) to the ground state, emitting a characteristic gamma ray for each decay transition with energy equal to the difference in the energy levels involved (see induced gamma emission). (wikipedia.org)
  • patients
  • Computed tomography was abnormal in 11 out of 16 patients and revealed hydrocephalus in nine, basal exudates, infarction in subcortical white matter and basal ganglia in six patients each, frontal cortical infarction in one, and granulomata in three patients. (bmj.com)
  • distribution
  • After repeating the measurement for neutron beam incidence at positions around the sample, an image of the distribution of the nuclei in the sample can be reconstructed as done in tomography. (wikipedia.org)
  • Imaging
  • Computed tomography angiography (CTA), an imaging methodology using a ring-shaped machine with an X-Ray source spinning around the circular path so as to bathe the inner circle with a uniform and known X-Ray density. (wikipedia.org)
  • Gd2O2S: Pr based solid state X-ray detectors have been successfully reintroduced to X-ray sampling in medical computed tomography (imaging by sections or sectioning, through the use of any kind of penetrating wave). (wikipedia.org)
  • In the field of biology, bright-field transmission electron microscopy (BF-TEM) and high-resolution TEM (HRTEM) are the primary imaging methods for tomography tilt series acquisition. (wikipedia.org)