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Related Concept Videos

Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

Imaging Studies II: Positron Emission Tomography and Scintigraphy

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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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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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Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
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Covalent Radiopharmaceuticals: Precision Imaging and Therapy for Cancer.

Paul C Klauser1, Lei Wang2,3

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Molecular Pharmaceutics
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Summary
This summary is machine-generated.

Covalent radiopharmaceuticals form durable bonds with cancer targets, improving imaging and therapy by overcoming limitations of reversible tracers. This new class offers enhanced tumor retention and selectivity for next-generation precision oncology.

Keywords:
covalent mechanismmolecular imagingoncologyradiopharmaceuticalradiotheranostics

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Area of Science:

  • Oncology
  • Radiopharmaceutical Chemistry
  • Molecular Imaging

Background:

  • Conventional radiopharmaceuticals face limitations due to reversible target binding.
  • Challenges include rapid internalization, low target abundance, and tumor heterogeneity.
  • Covalent radiopharmaceuticals offer a novel approach to overcome these limitations.

Purpose of the Study:

  • To review the advancements and potential of covalent radiopharmaceuticals.
  • To highlight their advantages in cancer imaging and therapy.
  • To discuss their role in next-generation precision oncology.

Main Methods:

  • Development of covalent radiopharmaceuticals with diverse molecular formats (small molecules, protein binders, peptidomimetics).
  • Engineering of covalent targeting moieties for selective and stable binding.
  • Evaluation in preclinical and early clinical studies.

Main Results:

  • Covalent radiopharmaceuticals demonstrate durable target engagement and prolonged tumor retention.
  • Achieved improved target selectivity, imaging contrast, and therapeutic efficacy.
  • Showed superior performance over standard-of-care agents in some cases.
  • Enabled better alignment of pharmacokinetics with radionuclide decay, improving dosimetry.

Conclusions:

  • Covalent radiopharmaceuticals represent a significant advancement in cancer imaging and therapy.
  • They offer enhanced performance by overcoming limitations of noncovalent agents.
  • Ongoing innovations position them as foundational components of precision oncology.