Fiber optic sensor for respiration gating in MR scanners

Andreas T. Augousti; Ali Raza

doi:10.1117/12.252142

24 September 1996 Fiber optic sensor for respiration gating in MR scanners

Andreas T. Augousti, Ali Raza

Proceedings Volume 2895, Fiber Optic Sensors V; (1996) https://doi.org/10.1117/12.252142
Event: Photonics China '96, 1996, Beijing, China

Abstract

We report here the adaptation of an existing optical respiration monitor, the fiber optic respiratory plethysmograph (FORP), to act as a gating tool to compensate for respiratory motion that occurs during scans in magnetic resonance (MR) scanners. The instrument is based on the principle of bending losses in optical fibers, and features a user-friendly graphical interface written in Visual Basic for Windows. One of the novelties of the system is the use of an optical feedback channel to instruct the subject to inhale, exhale or hold their breath. Results are presented that demonstrate that the instrument is useful in helping a test subject reproduce accurate breath holds.

Citation Download Citation

Andreas T. Augousti and Ali Raza "Fiber optic sensor for respiration gating in MR scanners", Proc. SPIE 2895, Fiber Optic Sensors V, (24 September 1996); https://doi.org/10.1117/12.252142

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