PET Imaging

Positron emission tomography (PET) is a nuclear imaging technology (also referred to as molecular imaging) that enables visualization of metabolic processes in the body. The basics of PET imaging is that the technique detects pairs of gamma rays emitted indirectly by a positron-emitting radionuclide (also called radiopharmaceuticals, radionuclides or radiotracer). The tracer is injected into a vein on a biologically active molecule, usually a sugar that is used for cellular energy. PET systems have sensitive detector panels to capture gamma ray emissions from inside the body and use software to plot to triangulate the source of the emissions, creating 3-D computed tomography images of the tracer concentrations within the body.

tau protein, Alzheimer's, PET scan, imaging agent, brain decline, Washington University in St. Louis

A study using a new PET imaging agent shows that measures of tau protein in the brain more closely track cognitive decline due to Alzheimer's disease compared with long-studied measures of amyloid beta. More red color indicates more tau protein. The image on the left shows the average tau accumulation in the brains of cognitively normal people, averaged over many individuals. The image on the right shows the average amount of tau buildup in the brains of multiple people with mild Alzheimer's symptoms. Scanning multiple individuals shows that the intensity of tau deposits correlates with the severity of cognitive dysfunction. Image courtesy of Matthew R. Brier.

News | PET Imaging | May 12, 2016
May 12, 2016 — A buildup of plaque and dysfunctional proteins in the brain are hallmarks of Alzheimer’s disease. While...
News | Radiopharmaceuticals and Tracers | May 09, 2016
May 9, 2016 — A recent study demonstrates that Ga-68 DOTATATE...
Carestream, oncology workflow, PET/CT, Vue Motion
Technology | Oncology Diagnostics | May 05, 2016
May 5, 2016 — Carestream now offers an oncology reading workflow for...

Early detection of cancer lesions with the latest generation of PET/CT scanners supports improved patient management. Yet much of PET’s potential, particularly for following patients and as a component in PET/MR, remains unrealized. (Image courtesy of Siemens Healthcare and the University of Tennessee, Knoxville)

Feature | Radiology Imaging | April 29, 2016 | Greg Freiherr
Adopting medical technology because it is new or novel lost its luster a long time ago. It is little wonder then that...
Advances in PET/CT Technology

Photo courtesy of GE Healthcare

Feature | Radiology Imaging | April 29, 2016 | Jeff Zagoudis
The last 12 months have seen significant growth in the positron...
Will PET/MR Ever Be Widely Adopted?

PET/MR images courtesy of GE Healthcare

Blog | Molecular Imaging | April 27, 2016
In the world of molecular imaging, PET/MR is a wild card. But it’s a wild card that’s ready to be played. Three major...
Mirada Medical, The Christie Hospital, England, PET-MRI, radiation therapy
News | Nuclear Imaging | April 20, 2016
April 20, 2016 — Mirada Medical announced a new agreement to work with the clinicians and physicists at The Christie...
Why Politics (and Money) Will Define the Next Generation of Scanners

Photo courtesy of Pixabay

Blog | Molecular Imaging | April 20, 2016
It’s been a long time since radiology focused just on the detection of disease. And it will never see those days again...
Why the Use of PET/CT in Radiation Therapy Requires Thinking Outside the Box

Graphic courtesy Pixabay

Blog | Molecular Imaging | April 13, 2016
The intersection between PET/CT and radiation therapy is widening. And it is doing so in unanticipated ways. You might...
How to Achieve the Quantitative Promise of PET/CT

Image courtesy Siemens Healthcare

Blog | PET-CT | April 06, 2016
The good news for molecular imaging is that the latest generation of PET/CT can visualize more and subtler signs of...
PET/CT scan, brain stress center, heart disease predictor, ACC.16
News | PET-CT | April 05, 2016
April 5, 2016 — New research shows individuals with a greater degree of activity in the stress center of the...
PET imaging, cancer treatment, UCLA study, Caius Radu, dCK
News | PET Imaging | March 29, 2016
March 29, 2016 —A promising new discovery by University of California Los Angeles (UCLA) scientists could lead to a new...
PET-CT, head and neck cancer, U.K. study, persistent cells

Scans showing the remaining surviving cancer cells after treatment. Image courtesy of University of Birmingham

News | PET-CT | March 23, 2016
March 23, 2016 — New research shows that innovative scanning-led surveillance can help identify the need for, and...
PET/CT, oropharyngeal cancer, recurrence, study, Multidisciplinary Head and Neck Cancer Symposium
News | PET-CT | March 16, 2016
March 16, 2016 — For patients treated with definitive...
Alzheimer's disease, IDEAS study, patient enrollment open, amyloid PET scan
News | PET Imaging | March 03, 2016
March 3, 2016 — Participating dementia specialists may now enroll patients in the Imaging Dementia—Evidence for Amyloid...
Alzheimer's disease, oligomers, amyloid plaque, bifunctional chemical agents, Washington University in St. Louis
News | PET Imaging | February 23, 2016
February 23, 2016 — The National Institutes of Health recently bestowed a $1.5 million grant on a Washington University...
PET scans, lung cancer survivors, overuse, national study
News | PET Imaging | February 22, 2016
February 22, 2016 — A new study suggests that one approach to watching for...
Toshiba Celesteion PET/CT, Fox Valley Hematology & Oncology
News | PET-CT | February 10, 2016
February 10, 2016 — Patients at Fox Valley Hematology & Oncology’s (FVHO) new cancer care center are receiving a...