Head CT of patient wearing cervical collar imaged at 120kVp using 256 slice scanner with 80 x 0625mm detector configuration Because the gantry cant tilt images were acquired in helical mode and then reconstructed obliquely What is the ID: 1034548
Download Presentation The PPT/PDF document "Physics Case of the Day - Monday" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
1. Physics Case of the Day - MondayHead CT of patient wearing cervical collar imaged at 120kVp using 256 slice scanner with 80 x 0.625mm detector configuration. Because the gantry can’t tilt, images were acquired in helical mode and then reconstructed obliquely. What is the source of the artifacts seen in the lower cerebellum?Author: David M. Gauntt, Ph.D.
2. Physics Case of the Day - MondayThe artifact in the image to the right is a set of beam hardening streaks streaks caused by dental implants. Author: David M. Gauntt, Ph.D.
3. Physics Case of the Day - MondayThe topogram (below) confirms the presence of significant dental amalgam, and a true axial view (right) through the plane of the amalgam shows significant beam hardening streaking.
4. Physics Case of the Day - MondayIn a sagittal view, the artifact (yellow arrow) extends from the dental amalgam back through the posterior fossa.
5. Physics Case of the Day - MondayWhen the data are reformatted into oblique images, the artifact appears in small sections of multiple planes.