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.

Report Date:

1988-02-28

Pagination or Media Count:

9.0

Abstract:

Capabilities for biomagnetic measurements have been advanced by the successful development of a Superconducting Quantum Interference DeviceSQUID-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 sensors 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