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Related Concept Videos

Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

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Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET
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Related Experiment Video

Updated: Mar 2, 2026

A Whole Body Dosimetry Protocol for Peptide-Receptor Radionuclide Therapy PRRT: 2D Planar Image and Hybrid 2D+3D SPECT/CT Image Methods
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Personalized Dosimetry for Radionuclide Therapy Using Molecular Imaging Tools.

Michael Ljungberg1, Katarina Sjögreen Gleisner2

  • 1Department of Medical Radiation Physics, Lund University, 221 85 Lund, Sweden. michael.ljungberg@med.lu.se.

Biomedicines
|May 25, 2017
PubMed
Summary

Radionuclide therapy uses targeted radioactive drugs to treat cancer. Accurate personalized dosimetry, using molecular imaging like SPECT, is crucial for effective treatment and minimizing side effects.

Keywords:
Monte CarloSPECTdosimetryquantificationradionuclide therapyreconstruction

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Area of Science:

  • Nuclear medicine
  • Medical physics
  • Radiopharmaceutical therapy

Background:

  • Radionuclide therapy offers an alternative for systemic malignancies when external radiation is not feasible.
  • Targeted radiopharmaceuticals deliver lethal radiation doses to tumor cells.
  • Minimizing side effects to normal tissues necessitates precise personalized dosimetry.

Purpose of the Study:

  • To review the dosimetry chain in radionuclide therapy.
  • To highlight the role of molecular imaging in quantitative dose assessment.
  • To present a tool for personalized dosimetry in radionuclide therapy.

Main Methods:

  • Review of dosimetry principles and challenges in radionuclide therapy.
  • Emphasis on molecular imaging techniques, including planar imaging and SPECT/CT.
  • Description of the Lundadose software tool for personalized dosimetry.

Main Results:

  • Accurate in vivo distribution and redistribution measurements of radiopharmaceuticals are essential.
  • Quantitative planar and SPECT imaging are key for absorbed dose determination.
  • The Lundadose tool provides a framework for personalized dosimetry calculations.

Conclusions:

  • Personalized dosimetry is a prerequisite for safe and effective radionuclide therapy.
  • Molecular imaging, particularly SPECT/CT, is vital for quantitative dosimetry.
  • Advanced tools like Lundadose are needed to implement accurate personalized dosimetry.