Nuclear Medicine

Nuclear medicine (also called molecular imaging) includes positron emission computed tomography (PET) and single photon emission computed tomography (SPECT) imaging. Nuclear imaging is achieved by injecting small amounts of radioactive material (radiopharmaceuticals) into patients before or during their scan. 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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PET imaging uncovers a surprising new way COVID-19 affects the heart

A new study in JACC: Cardiovascular Imaging focuses on a potential new side effect of COVID-19, highlighting the continued importance of monitoring these patients going forward. 

August 18, 2022
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Whole-body PET image reveals body's immune response to COVID

In the study, patients who had recovered from an COVID infection were injected with a small amount of the 89Zr-labeled radiotracer before undergoing a uExplorer PET/CT scan.

August 11, 2022
COVID-19 medical imaging examples of various clinical presentations. SARS-CoV-2 clinical imaging presentations.

PHOTO GALLERY: What does COVID-19 look like on medical imaging?

This image gallery shows what the various clinical presentations associated with the COVID-19 virus that have been documented during the coronavirus pandemic.

August 9, 2022
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Survey data reveal a potential window of opportunity for attracting student interest in nuclear medicine

Experts recently detailed their efforts to garner more student interest in the field—efforts that were successful, according to a survey responses from students who completed a short nuc med seminar.

July 26, 2022
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18F-FDG PET/CT radiomics nomogram provides detailed insight into neuroblastoma

Better risk stratification can improve clinical decision making and better outcomes, experts involved in the study explained in EJR.

July 21, 2022
Organs

New PET imager cleared for U.S. sales

A Canadian manufacturer of positron emission tomography equipment has received FDA’s OK to market a small-footprint scanner that images targeted organs bearing radiotracers at close range.

July 20, 2022
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Big private payer reverses course on cardiac PET/CT coverage

One of the largest private health insurers in the U.S. has gone from considering hybrid PET/CT for cardiac indications “experimental/investigational” to displaying willingness to pay for the modality. 

July 1, 2022
Dementia

CMS initiates official review of PET scan limit for patients with Alzheimer's

"Clinical study protocols may involve more than one PET [amyloid-beta] scan per patient,” the CMS announcement said.

June 28, 2022

Around the web

Automated AI-generated measurements combined with annotated CT images can improve treatment planning and help referring physicians and patients better understand their disease, explained Sarah Jane Rinehart, MD, director of cardiac imaging with Charleston Area Medical Center.

Two advanced algorithms—one for CAC scores and another for segmenting cardiac chamber volumes—outperformed radiologists when assessing low-dose chest CT scans. 

"Gen AI can help tackle repetitive tasks and provide insights into massive datasets, saving valuable time," Thomas Kurian, CEO of Google Cloud, said Tuesday. 

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