文档介绍：Neck Rotator
Andrew L. Wentland: BSAC
Aaron J. Huser: Communicator
BME 200/300
Department of Biomedical Engineering
University of Wisconsin, Madison
October 10, 2003
Client
Victor M. Haughton, ., Professor
Department of Radiology
Advisor
Robert Radwin, Ph. D., Professor
Department of Biomedical Engineering
Abstract
This report proposes three prototypes for a device that can rotate and flex/extend the neck in CT and MRI scanners. All three designs herein provide a similar methodology of attaching to the stretcher, but differ mechanistically when rotating or flexing/extending the neck. Currently, no systematic way of rotating and flexing/extending the neck is available. Our final design attempts to satisfy all client requirements. Aside patibility in CT and MRI scanners, our final design affords a reliable way of measuring positions on a relative number scale. From this numbering system, positions of the head can be repeated in future scans.
Table of Contents Page
Abstract 1
Table of Contents 2
Client Research 3
Background-MRI 4
Background-CT 6
Problem Statement 6
Client Requirements 6
Proposed Design Solutions-Overview 7
Design I 9
Design II 10
Design III 11
Design Matrix 14
Potential Problems 14
Future Work 14
References 15
Appendix A (PDS) 16
Client Research
CT and MRI (Figure 1) scans create digital images that can be used as diagnostic tools. Victor Haughton, MD analyzes these images for his research pertaining to the collum (neck). Dr. Haughton has three main objectives/hypotheses:
(1) Rotation narrows the neural foramen, which might pression in some patients. He plans on collecting different measurements from scans of patients in a neutral-collum position and in a rotated-collum position.
(2) Flexion increases the velocity of cerebrospinal fluid (CSF) flow in the foramen magnum during the cardiac cycle. He intends on measuring CSF velocity through the foramen magnum in patients with Chiari I malformation (a neuromu