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Positron Emission Tomography01:29

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Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body...
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Author Spotlight: Standardizing Mouse In Vivo PET Imaging with Body Conforming Molds and Automated Analysis
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Recent Advances and Future Progress in PET Instrumentation.

Piotr J Slomka1, Tinsu Pan2, Guido Germano1

  • 1Department of Imaging, Cedars-Sinai Medical Center, Los Angeles, CA; Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA.

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Recent advancements in Positron Emission Tomography (PET) hardware and software, including digital photomultipliers and advanced reconstruction techniques, enhance imaging quality. Simultaneous PET/MR systems further improve diagnostic capabilities and clinical utility.

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Area of Science:

  • Medical Imaging
  • Nuclear Medicine
  • Radiology

Background:

  • Positron Emission Tomography (PET) is a crucial and expanding medical imaging technique.
  • Continuous evolution in PET instrumentation has led to significant improvements in imaging performance.

Purpose of the Study:

  • To review recent and future hardware and software technologies for PET/CT systems.
  • To highlight advancements enhancing image quality, resolution, and clinical applications.

Main Methods:

  • Discussion of new hardware components like digital photomultipliers and fast electronics.
  • Integration of time-of-flight reconstruction and advanced iterative techniques with resolution recovery.
  • Exploration of enhanced CT capabilities (4D CT, coronary CT angiography) and PET acquisition protocols (continuous bed motion, motion compensation).

Main Results:

  • Improved PET sensitivity through larger fields of view and 3D imaging.
  • Enhanced CT performance with faster scanners and multislice detectors.
  • Significant improvements in image quality and resolution via advanced reconstruction and motion correction techniques.
  • Clinical deployment of simultaneous PET/MR systems offering superior image registration and complementary information.

Conclusions:

  • Recent technological innovations in PET/CT and the advent of PET/MR systems significantly enhance diagnostic potential.
  • These advancements solidify PET's position as a leading and evolving imaging modality.
  • PET/MR imaging presents a promising future with improved image quality and expanded clinical utility.