Molecular Imaging

Molecular imaging (also called nuclear medicine or nuclear imaging) can image the function of cells inside the body at the molecular level. This includes the imaging modalities of positron emission computed tomography (PET) and single photon emission computed tomography (SPECT) imaging. How does PET and SPECT imaging work? Small amounts of radioactive material (radiopharmaceuticals) injected into a patient. These can use sugars or chemical traits to bond to specific cells. The radioactive material is taken up by cells that consume the sugars. The radiation emitted from inside the body is detected by photon detectors outside the body. Computers take the data to assemble images of the radiation emissions. Nuclear images may appear fuzzy or ghostly rather than the sharper resolution from MRI and CT.  But, it provides metabolic information at a cellular level, showing if there are defects in the function of the heart, areas of very high metabolic activity associated with cancer cells, or areas of inflammation, data not available from other modalities. These noninvasive imaging exams are used to diagnose cancer, heart disease, Alzheimer’s and Parkinson’s disease, bone disorders and other disorders. 

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3 indications auguring well for the future of pediatric PET/MRI

In pediatric care settings, hybrid PET/MR imaging combines “exquisite soft-tissue information obtained by MR imaging with functional information provided by PET.”

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FDA clears spinal-tap test that could challenge PET in Alzheimer’s diagnostics

The FDA has approved a lab test for evaluating cognitively impaired adults who may be in the early stages of Alzheimer’s disease.

coronavirus COVID-19 vaccine vaccination

FDG PET/CT radiomics distinguishes between vaccine-related or metastatic breast cancer lymphadenopathy

The findings could help clinicians manage patients’ treatment when the origin of axillary lymphadenopathy is of concern, experts suggested. 

prostate cancer PSA

Combination therapy that includes new radionuclide proves effective for metastatic prostate cancer

The therapeutic combination of 177Lu-PSMA-617 with idronoxil (NOX66) reduced PSA levels in 86% of study participants.

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New radiotracer that detects prostate cancer recurrence produces 'stunning' results

The research focused on a radiopharmaceutical that contains the isotope zirconium 89, which has a significantly longer half-life compared to gallium-68-labelled PSMA ligands.

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Netherlands nuclear reactor has resumed operations after unplanned outage

The supply of medical radioisotopes is expected to normalize in the next two weeks now that the Petten HFR has resumed production.

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SNMMI selects first Radiopharmaceutical Therapy Centers of Excellence

The Society of Nuclear Medicine and Molecular Imaging's program was established to ensure that institutions adhere to the strict regulatory training, qualification and performance standards necessary to safely deliver radiopharmaceutical therapies.

Radiology leaders speak out in support of Ukraine

In the wake of Russia’s invasion of Ukraine, leaders in the radiology community are speaking out and publicly denouncing the aggressions.