Real-Time NMR Imaging Systems Using Personal Computers

✍ Scribed by Katsumi Kose; Tomoyuki Haishi; Arvind Caprihan; Eiichi Fukushima

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 906 KB
• Volume: 124
• Category: Article
• ISSN: 1090-7807
• DOI: 10.1006/jmre.1996.1024

✦ Synopsis

Two real-time NMR image-processing systems using high-speed hardware and/or software. Furthermore, when a UNIX workpersonal computers have been developed. The first was made with station is used for real-time image reconstruction, it is diffia MS-DOS (Microsoft Disk Operating System) PC system (CPU, cult to synchronize the reconstruction and display with the Pentium; clock frequency, 100 MHz) and a homebuilt frame mem-NMR system, because the UNIX operating system is not a ory board. The second was made with a MS-Windows (Microsoft real-time operating system.

Windows 95) PC system (CPU, Pentium; clock frequency, 133

An image-refresh rate of about seven images per second MHz). The reconstruction time for one 128 1 128 image was 280 for 64 1 64 pixel images was reported by Kose and Inouye ms for the DOS system and 120 ms for the Windows system, while

(3), who used echo-planar imaging (EPI) and a digital signal the image display time was 30 ms for the DOS system and 120 ms processor (DSP). Their image-processing system was confor the Windows system. NMR imaging experiments for observing nected to the NMR system with only three analog signal unsteady particle or bubble motion in fluids were performed using these systems. These real-time image-reconstruction systems dem-lines, which makes the system more suitable as an add-on onstrate great promise as add-on devices to existing NMR imaging device for any NMR imaging apparatus (7), and this was systems. ᭧ 1997 Academic Press demonstrated later with a Bruker Biospec system. In the present paper, we report two real-time NMR imaging systems using high-speed personal computers to further meet the above requirements. To evaluate their system perfor-33, 230 (1995).