Which technique creates a three-dimensional dynamic image of blood vessels? A) Digital subtraction angiography B) Magnetic resonance imaging C) Dynamic spatial reconstruction D) Positron emission tomography 2) Magnetic resonance imaging is based on the movement of A) electrons in a magnetic field. B) carbons in a magnetic field. C) protons in a magnetic field. D) cells in a magnetic field. 3) The delivery of a radioactive compound to the body to study the metabolism of tissues is called_________blank. A) MRI B) PET C) DSA D) DSR 4) An anatomical image created from sound waves is a/an_________blank.