Module 02. Instrumentation of Cardiovascular PET-Instrumentation and Cardiovascular PET (Slides)

Instrumentation and Cardiovascular PET (Slides)

Pdf Summary

This document discusses the instrumentation and technology used in cardiovascular PET (Positron Emission Tomography) imaging. It begins with an introduction to the components of a PET scanner and the differences between dedicated PET and hybrid PET/CT scanners. The document also covers the importance of quality control in PET imaging.<br /><br />The section on instrumentation covers the concepts of mechanical collimation and electrical collimation in PET and SPECT (Single Photon Emission Computed Tomography) imaging. It explains how scatter and attenuation affect image quality and the role of coincidence detection in PET imaging.<br /><br />The document then discusses the design of PET scanners, including the use of scintillation crystals and photomultiplier tubes (PMTs). It explains the differences between individual crystal detectors and common scintillation crystals. The section also introduces the concept of rings of detector modules and the acquisition of sinogram images.<br /><br />The next section compares 2D (with septa) and 3D (without septa) PET scanners. It explains the differences in sensitivity, scatter fraction, and random events detected between the two types of scanners.<br /><br />The document also explains the concept of positron range and the factors that determine PET scan resolution. It discusses the challenges of photon attenuation in PET and SPECT imaging and the use of transmission scans for attenuation correction. The differences between dedicated PET and PET/CT scanners for attenuation correction are also highlighted.<br /><br />Advances in PET scanning, such as digital PET and time-of-flight (TOF), are discussed in the document. It explains how these technologies improve system sensitivity, timing resolution, and motion management in PET imaging.<br /><br />The document concludes with a section on suggested quality control procedures for PET imaging, including daily and periodic tests to assess system performance, image quality, and accuracy.<br /><br />Overall, this document provides a comprehensive overview of the instrumentation and technology used in cardiovascular PET imaging, as well as the importance of quality control in ensuring accurate and high-quality PET scans.

Keywords

cardiovascular PET imaging

instrumentation

technology

PET scanner

quality control

scintillation crystals

attenuation correction

digital PET

time-of-flight (TOF)

system sensitivity