MRI: Non-invasive angiography arteria carotis Circulus arteriosus Willisii
MRI movie Based on high time resolution images Opening and closing of aorta valve
Functional MRI fMRI High time resolution image sequences recorded synchronously with physiological processes Effect of light pulses on visual cortex
ISOTOPE-BASED DIAGNOSTIC IMAGING TECHNIQUES Gamma camera SPECT PET
Gamma Camera Lead collimatorPMT matrixScintillation detector Kidney scintigram PROBLEM: Summation image
SPECT: Single Photon Emission Computed Tomography gamma camera The detector circles the body in the transaxial plane
PET: Positron emission tomography photon (0.51 MeV) electron (e - ) positron ( + ) 18 F (positron emitter) Detector NB: annihilation radiation conservation of momentum Half life of isotopes: 20-110 min. 1-2 mm
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