Apparatuses and methods for cancellation of inhomogeneous magnetic fields induced by non-biological materials within a patient's mouth during magnetic resonance imaging

摘要

This disclosure includes magnetic field correction devices and methods for using the same. Some magnetic field correction devices include an arch-shaped body configured to be worn inside or outside of a user's mouth such that the arch-shaped body follows the contour of the user's teeth or face, where the arch-shaped body has one or more sidewalls and where the sidewalls are configured to receive a plurality of ferromagnetic or magnetic members. Some of the present methods include performing magnetic resonance imaging (MRI) on a user having one or more magnets coupled to an apparatus disposed inside or outside and adjacent to the user's mouth. Others of the present methods include coupling a plurality of magnets to an arch-shaped body configured to be worn by a user, where the magnets are configured to reduce artifacts caused by non-biological materials within the user's mouth during MRI.

主权项

1. An apparatus comprising:
an arch-shaped body configured to be worn inside of a user's mouth such that the arch-shaped body follows a contour of at least some of the user's teeth; where the arch-shaped body comprises one or more sidewalls and a biting member, the biting member configured to be disposed between the user's mandibular and maxillary teeth, the one or more sidewalls angularly disposed relative to the biting member and configured to be coupled to a plurality of members comprising magnetically permeable material, at least one of the one or more sidewalls comprises a curved surface, and the apparatus is configured to be worn by a user such that normal vectors along the surface lie substantially in a plane perpendicular to a magnetic field of a magnetic resonance imaging scanner.