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SNM: 2005 Image of the Year

July 19th, 2005 Medgadget Editors Society


The Society of Nuclear Medicine’s 2005 Image of the Year has been announced. An ‘exquisite’ PET/CT image demonstrates a primary cancer lesion and a mediastinal lymph node metastasis. The image shows a powerful new combination of functional modality called positron emission tomography (PET) and a familiar computed tomography (CT):

An image by Stanford University researchers that details taking molecular/nuclear imaging to a three-dimensional level-providing a merged or “fused” picture of the body’s metabolism and structure as well as a “virtual” visualization of the body’s organs “from the inside out”–has been named the 2005 Image of the Year at the Society of Nuclear Medicine’s 52nd Annual Meeting in Toronto.
The image is part of the study “Novel 3-D Rendered FDG PET-CT Virtual Bronchoscopy and Colonography for Improved Lesion Localization and Pre-Surgical Evaluation,” performed by researchers from the department of radiology in the division of nuclear medicine at Stanford University. “This study is intended to be an initial step in developing a new paradigm for reviewing and interpreting positron emission tomography (PET)/computed tomography (CT) images in a fully 3-D-rendered format,” said senior scientist and SNM member Sanjiv (Sam) Gambhir, director of the Molecular Imaging Program at Stanford University, Stanford, Calif. (http://mips.stanford.edu), and chief of nuclear medicine and a professor in the departments of radiology and bioengineering at the Stanford School of Medicine. “Our new strategy is to fuse PET and CT in order to travel through and around organs for improved visualization of the 3-D anatomical and functional data sets,” detailed Gambhir.
Combining PET with CT provides merged or “fused” 3-D pictures (volumetric) of the body’s metabolism and structure. The Stanford researchers-Andrew Quon, Sandy Napel, Christopher Beaulieu and Gambhir-took PET/CT one step further, offering the possibility of actually visualizing structure and function from the inside out throughout the patient’s body, such as the airways and bowels. “As computer and scanner technology advances, imaging modalities–such as virtual CT colonography and bronchoscopy–will propagate, particularly for presurgical planning and visualization,” noted Quon, clinical assistant professor of radiology/diagnostic radiology at Stanford. “This pilot study demonstrates the usefulness of fusing 3-D-rendered PET images to CT images, allowing for simultaneous 3-D viewing of multiple modalities,” added the SNM member. “Our Stanford team hopes this work will be significant for our patients and for the molecular/nuclear imaging field, leading to multiple applications of our work,” said Gambhir. Of course, more research needs to be done; additional studies with larger, specific patient populations and additional radiotracers need to be carried out, he said.
The use of PET to gain molecular or functional information and CT/MRI for anatomical imaging has been dramatic over the past few years. PET is a powerful medical imaging modality that noninvasively (nonsurgically) uses special imaging systems and radioactive tracers to produce pictures of the function and metabolism of the cells in the body. CT is an X-ray procedure that generates a detailed view of the anatomy or structure of organs and tissues in the body.

The press release…
FLASHBACK: Biograph 64 PET/CT System

Medgadget Editors

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