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Dynamic whole-body PET imaging: principles, potentials and applications.

Arman Rahmim1,2, Martin A Lodge3, Nicolas A Karakatsanis4

  • 1Department of Radiology and Radiological Science, Johns Hopkins University, JHOC Building Room 3245, 601 N. Caroline St, Baltimore, MD, 21287, USA. arahmim1@jhmi.edu.

European Journal of Nuclear Medicine and Molecular Imaging
|October 1, 2018
PubMed
Summary

Dynamic whole-body (DWB) positron emission tomography (PET) offers advanced quantitative imaging beyond standard uptake value (SUV) methods. This technique captures crucial kinetic data, enhancing diagnostic value in clinical settings.

Keywords:
DynamicKinetic modelingPETParametric imagingSystemic diseaseWhole-body

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Area of Science:

  • Nuclear Medicine
  • Medical Imaging
  • Radiochemistry

Background:

  • Conventional static positron emission tomography (PET) protocols lack dynamic tracer kinetic information.
  • Dynamic whole-body (DWB) PET enables extended axial data acquisition, capturing detailed kinetic parameters.
  • DWB PET provides complementary information not available with standard uptake value (SUV) imaging.

Purpose of the Study:

  • To evaluate dynamic whole-body (DWB) positron emission tomography (PET) as an advanced clinical imaging tool.
  • To compare DWB PET with conventional standard uptake value (SUV) imaging.
  • To highlight the clinical potential and applications of DWB PET.

Main Methods:

  • Dynamic data acquisition over an extended axial range.
  • Generation of multi-parametric images, including Patlak slope and intercept.
  • Provision of conventional 'SUV-equivalent' images for specific protocols.

Main Results:

  • DWB PET captures tracer kinetic information beyond static SUV imaging.
  • The method is feasible within clinical imaging times.
  • Multi-parametric images (Patlak slope, intercept, SUV-equivalent) can be generated.

Conclusions:

  • DWB imaging, applicable to PET/CT and PET/MRI, offers valuable quantitative measures.
  • DWB PET provides significant advantages over conventional SUV-derived measures.
  • Potential pitfalls are discussed, alongside the overall clinical value of DWB imaging.