Radiology Key

Radiation Doses and Radiation Protection Alfred Pfeiffer Cyrill Burger Positron emission tomography (PET), single-photon emission computed tomography (SPECT), and computed tomography (CT) use ionizing radiation, and therefore when these examinations…

CT-Based Attentuation Correction for PET-CT Scanners Jonathan P. J. Carney David W. Townsend In dual-modality PET-CT tomographs, the PET emission data can be routinely corrected for photon-attenuation effects by using…

CT-Based Attenuation Correction for SPECT Timothy G. Turkington David R. Gilland The addition of x-ray computed tomography (CT) to a conventional single-photon emission computed tomography (SPECT) system allows attenuation correction…

Basics of CT Scanning and Issues Relevant to Integrated Imaging Willi A. Kalender X-ray computed tomography (CT) has evolved to be one of the most important imaging modalities due to…

Design Criteria for PET Scanners: What is Important and Why Charles Stearns Alexander Tokman Positron emission tomography (PET) image quality is a function of scanner resolution and the statistical quality…

Basics of PET Scanning Cyrill Burger David W. Townsend Positron emission tomography (PET) involves the administration to a patient of a radioactive, positron-emitting nuclide, which tags a biomolecule specific to…

Basics of SPECT Scanning: Emission and Transmission Timothy G. Turkington David R. Gilland Single-photon emission computed tomography (SPECT) imaging provides cross-sectional images of the distributions of single-photon-emitting radiotracers. In all…

Radiation Sources for Emission Scanning: Positron and Gamma Emission Cyrill Burger Alfred Pfeiffer Nuclear medicine is based on pharmaceuticals labeled with a suitable radioactive isotope. After such a radiopharmaceutical has…

Introduction Gustav von Schulthess The rapid adoption of positron emission tomography (PET) within the framework of the combined use of PET and computed tomography (CT), or PET-CT, has been astounding….