Accession Number : ADA193811

Title :   Methods and Instrumentation for Biomagnetism.

Descriptive Note : Rept. for 1 Jan 87-28 Feb 88,

Corporate Author : NEW YORK UNIV N Y

Personal Author(s) : Kaufman, Lloyd ; Williamson, Samuel J ; Robinson, S E

PDF Url : ADA193811

Report Date : 28 Feb 1988

Pagination or Media Count : 9

Abstract : Capabilities for biomagnetic measurements have been advanced by the successful development of a Superconducting Quantum Interference Device(SQUID)-based magnetic sensor that does not rely on liquid helium for cooling. This system, known as CryoSQUID, achieves a sensor noise level that is appropriate for high-sensitivity measurements of the magnetic field of the human brain. It employs an external compressor and a two-stage refrigerator within the sensor's dewar to cool a dc-SQUID and associated detection coil. The sensor can be operated in any orientation, including horizontally and up-side down. Keywords: Magnetoencephalograms; Cardiography.

Descriptors :   *BIOMAGNETISM, *MAGNETOENCEPHALOGRAMS, *MAGNETIC DETECTORS, BRAIN, CARDIOGRAPHY, COILS, COMPRESSORS, COOLING, DETECTION, DETECTORS, EXTERNAL, HIGH SENSITIVITY, HUMANS, LEVEL(QUANTITY), LIQUID HELIUM, MAGNETIC FIELDS, MEASUREMENT, NOISE, REFRIGERATION SYSTEMS, STAGING, MEASURING INSTRUMENTS

Subject Categories : Medicine and Medical Research
      Medical Facilities, Equipment and Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE