SQUID‐detected MRI at 132 μT with T1‐weighted contrast established at 10 μT–300 mT

• DOI: 10.1002/mrm.20316
• Publication Date: 2004-12-22T21:19:23Z
• Authors: Seung Kyun Lee; Michael Möβle; Whittier Myers; Nathan Kelso; Andreas H. Trabes...; Alexander Pines; John Clarke
• Keywords: 03 medical and health sciences; 0302 clinical medicine; Phantoms, Imaging; 0103 physical sciences; Humans; Image Enhancement; Magnetic Resonance Imaging; 01 natural sciences

Abstract T 1 ‐weighted contrast MRI with prepolarization was detected a superconducting quantum interference device (SQUID). A spin evolution period in variable field between and detection enabled the measurement of fields 1.7 μT 300 mT; dispersion curves agarose gel samples over five decades frequency were obtained. SQUID at 5.6 kHz drastically reduces homogeneity requirements compared to conventional field‐cycling methods using Faraday coil detection. This allows measurements be easily combined MRI, so that wide range can used for tissue contrast. Images phantoms four different 10 mT demonstrated dramatic enhancement low fields. modified inversion recovery technique further enhanced by selectively suppressing signal contribution specific value low‐field . Magn Reson Med 53:9–14, 2005. Published 2004 Wiley‐Liss, Inc.