A Low-Cost Portable Electromagnetic Blood-Flow Meter System Utilizing Commercially Available Devices

By taking advantage of readily available industrial devices, used in conjunction with a simple auxiliary circuit, an efficient inexpensive blood-flow measuring system can be obtained. As a further advantage, the preamplifier and demodulator-recorder may be detached and used for other purposes. Flow recordings obtained with this system appear to equal or better recordings obtained with commercial integrated electromagnetic blood-flow measuring systems in regard to both frequency response and noise level. The system also exhibits high reliability and ease of operation as well as portability.