Color image orientation 1
- Orient axial and coronal images to show symmetry of brain structures, with equal heights of structures bilaterally
- Orient sagittal images so that the head and neck are not flexed or extended
- The anterior and posterior aspects of the corpus callosum should be parallel to the anterior commissure-posterior commissure (AC-PC) line as shown here
p, pons; cc, corpus callosum; pc, posterior cinguli.
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).
Color image display 1
- Display images with all planes (axial, sagittal, and coronal) linked by crosshairs
- Display the reference scale. Adjust the color scale to set the pons to approximately 90% maximum intensity. The cerebellar cortex should represent approximately 20%-30% of peak intensity on both negative and positive
- Briefly display axial brain slices from bottom to top and look for signs of atrophy
- Colors that allow the reader to discriminate intensity levels above and below the intensity level of the pons
- Color for regions with little or no amyloid binding such as the cerebellar cortex
- A range of at least five distinct colors above 50%-60% of peak intensity