A negative Vizamyl scan indicates sparse to no amyloid neuritic plaques.
- Shows more radioactivity in the white matter than in the grey matter, creating clear grey-white matter contrast
A positive Vizamyl scan indicates moderate to frequent amyloid
- Shows at least one cortical region with reduction or loss of the normally distinct grey-white matter contrast
- Has one or more regions with increased cortical grey matter signal and/or reduced or absent grey-white matter contrast
- May have one or more regions in which grey matter radioactivity is as intense as, or exceeds, the intensity in adjacent white matter
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imaging and interpretation, including selection of appropriate color scales.
Representative negative and positive scans; scans will vary. Images displayed using the rainbow color scale.
Image Misinterpretation: Errors may occur while interpreting Vizamyl PET images. Image interpretation is performed independently of the patient’s clinical information. The use of clinical information in the interpretation of Vizamyl images has not been evaluated and may lead to errors. Extensive brain atrophy may limit the ability to distinguish grey and white matter on a Vizamyl scan. Motion artifacts may distort the image.
Vizamyl images should be interpreted only by readers who have completed the Vizamyl Electronic Reader Training Program provided by GE Healthcare. For more information, contact your local Sales Specialist or GE Healthcare Medical Affairs at 800 654 0118 (option 2, then option 3).