Journal Article

Magnetic resonance imaging with an optical atomicmagnetometer

Xu, Shoujun, Rochester, Simon M., Budker, Dmitry, Yashchuk, Valeriy V., Donaldson, Marcus H., Pines, Alexander

2006

نظرة عامة

Magnetic resonance imaging (MRI) is a noninvasive andversatile methodology that has been applied in many disciplines1,2. Thedetection sensitivity of conventional Faraday detection of MRI depends onthe strength of the static magnetic field and the sample \"fillingfactor.\" Under circumstances where only low magnetic fields can be used,and for samples with low spin density or filling factor, the conventionaldetection sensitivity is compromised. Alternative detection methods withhigh sensitivity in low magnetic fields are thus required. Here we showthe first use of a laser-based atomic magnetometer for MRI detection inlow fields. Our technique also employs remote detection which physicallyseparates the encoding and detection steps3-5, to improve the fillingfactor of the sample. Potentially inexpensive and using a compactapparatus, our technique provides a novel alternative for MRI detectionwith substantially enhanced sensitivity and time resolution whileavoiding the need for cryogenics.

• موضوع: ATOMIC AND MOLECULAR PHYSICS / CRYOGENICS / DETECTION / MAGNETIC FIELDS / MAGNETIC RESONANCE / magnetic resonance imaging optical atomic magnetometry remotedetection low field / MAGNETOMETERS / MATERIALS SCIENCE / RADIOLOGY AND NUCLEAR MEDICINE / SENSITIVITY / SPIN / TIME RESOLUTION