Radiology Key

Radiation Detection and Measurement The detection and measurement of ionizing radiation are the basis for the majority of diagnostic imaging. In this chapter, the basic concepts of radiation detection and…

Magnetic Resonance Imaging: Advanced Image Acquisition Methods, Artifacts, Spectroscopy, Quality Control, Siting, Bioeffects, and Safety The essence of magnetic resonance imaging (MRI) in medicine is the acquisition, manipulation, display, and…

Nuclear Tomographic Imaging—Single Photon and Positron Emission Tomography (SPECT and PET) The formation of projection images in nuclear medicine was discussed in the previous chapter. A nuclear medicine projection image…

Radiation Protection It is incumbent upon all individuals who use radiation in medicine to strive for an optimal compromise between its clinical utility and the risk from radiation doses to…

Radiation Biology 20.1 OVERVIEW Rarely have beneficial applications and hazards to human health followed a major scientific discovery more rapidly than with the discovery of ionizing radiation. Soon after Roentgen’s…

Radionuclide Production, Radiopharmaceuticals, and Internal Dosimetry 16.1 RADIONUCLIDE PRODUCTION Although many naturally occurring radioactive nuclides exist, all of those commonly administered to patients in nuclear medicine are artificially produced. Artificial…

Nuclear Imaging—The Gamma Camera Nuclear imaging produces images of the distributions of radionuclides in patients. Because charged particles from radioactivity in a patient are almost entirely absorbed within the patient,…

Radioactivity and Nuclear Transformation Roentgen had discovered x-rays in early November 1895. Even in the absence of the virtually instantaneous worldwide communication networks known today, this discovery spread very quickly…

Image Quality The quality of medical images is related to how well they convey specific anatomical or functional information to the interpreting physician such that an accurate diagnosis can be…

X-ray Dosimetry in Projection Imaging and Computed Tomography Radiation dosimetry is a field of study that encompasses the measurement and calculation of ionizing radiation energy deposition into matter. Dosimetric quantities…