MR imaging of ventilator-dependent patients: Preliminary experience

Abstract

The authors have successfully performed MR imaging studies of ventilator-dependent patients by using a 1.5-T imaging system and a Siemens-Elema 900C (SV-900C) ventilator placed adjacent to the magnet bore. The Siemen's ventilator system described herein is commercially available, requires no special in-house modification, and can be used close to high-field-strength MR images. The system provides full-function ventilatory support, allowing precise control of both pressure and volume. At present, respiratory parameters are being monitored by a respiratory therapist in the imaging room; however, we currently are testing a fiber-optic-coupled remote monitoring system. Use of this system can increase the number of patients for whom magnetic imaging can be performed safely.