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Advancements in Single Photon Emission Computed Tomography/X-ray Computed Tomography (SPECT/CT) enhance Nuclear Medicine imaging. New techniques like CZT detectors and quantitative imaging promise improved diagnostics and personalized therapies.

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Area of Science:

  • Nuclear Medicine
  • Medical Imaging
  • Radiopharmaceuticals

Background:

  • Multimodal Single Photon Emission Computed Tomography/X-ray Computed Tomography (SPECT/CT) represents a significant leap in Nuclear Medicine imaging.
  • It enables high-quality attenuation correction and fusion of metabolic and anatomical data.
  • Ongoing advancements in SPECT instrumentation are continually expanding its clinical utility.

Purpose of the Study:

  • To review recent advancements in SPECT/CT instrumentation and techniques.
  • To highlight emerging methods awaiting clinical implementation.
  • To discuss the future outlook of SPECT/CT in Nuclear Medicine.

Main Methods:

  • Review of recent literature on SPECT/CT instrumentation and techniques.
  • Discussion of implemented clinical applications.
  • Exploration of novel methods under development, including multipinhole collimators, Monte-Carlo iterative reconstruction, and list-mode acquisitions.
  • Consideration of deep-learning applications in Nuclear Medicine imaging.

Main Results:

  • Clinical application of semiconductive Cadmium-Zinc-Telluride (CZT) detectors.
  • Development of quantitative SPECT for radiopharmaceutical uptake measurement in absolute units.
  • Implementation of whole-body SPECT and novel collimator designs.
  • Emerging techniques like multipinhole collimators and Monte-Carlo reconstruction show promise.

Conclusions:

  • SPECT/CT continues to evolve with new technologies enhancing diagnostic capabilities.
  • Standardization of quantitative SPECT is crucial for inter-site comparability and dosimetry.
  • The integration of therapeutic radiopharmaceuticals will solidify SPECT/CT's role in Nuclear Medicine.