Design and evaluation of a pneumatic pulse monitor for use during magnetic resonance imaging.
We describe a portable, battery-operated instrument designed to monitor pulsations in the finger or toe. The monitor is based on pneumatic principles and is suitable for use in the electromagnetically harsh environment of magnetic resonance imaging. A compliant Silastic chamber is deformed with each cardiac pulsation; the resulting pressure wave is then transmitted along a 25-ft (7.5-m) microbore tube to a pressure sensor in a remote electronic monitor.
Volgyesi
G A
GA
Department of Anaesthesia, Hospital for Sick Children, Toronto, Ontario, Canada.
Doyle
D J
DJ
Kucharczyk
W
W
Hele
M J
MJ
D001795:Blood Pressure Determination / Q000295:instrumentation; D011211:Electric Power Supplies; D004582:Electronics, Medical / Q000295:instrumentation; D004867:Equipment Design; D005069:Evaluation Studies as Topic; D005385:Fingers / Q000098:blood supply; D006801:Humans; D008279:Magnetic Resonance Imaging; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D011674:Pulse; D012826:Silicone Elastomers; D014034:Toes / Q000098:blood supply; D014160:Transducers, Pressure
D012826:Silicone Elastomers