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ABSTRACT: Aiming at the frequent failures in the PACS clinical applications, a continuous availability (CA) image server with triple modular redundancy (TMR) is designed and used for failover at the CPU/memory level. The TMR voter, which is included in the CA image server, is applied to detection of failures. Through UW or FW SCSI interfaces, two mirror-image disks, two RAID controllers and two DLT controllers are respectively connected to the modules in the TMR and a complete CA image server is brought into being. The CA image server will replace the potential single point of failure (SPOF) in the PACS and increases its availability rate to 99.999%. The advantages of the TMR CA image server make itself well suitable for large-scale medical image network and database applications.
Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation 08/2008; 32(4):275-8.
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ABSTRACT: The purpose of this study was to explore mitochondrial activities after oxygen inhalation by <sup>31</sup>P magnetic resonance spectroscopy. Six healthy volunteers were studied using a GE 3 T scanner. A spin-echo MRS sequence was utilized with a GE service coil. TR was 2000 msec and TE 35 msec with 128 scan averages. Before <sup>31</sup>P scan, a <sup>1</sup>H MRS pre-scan was performed to obtain shimming values. Exact two <sup>31</sup>P scans were performed before and after oxygen inhalation through nasal cannula at a flow rate of 10 L/min. Data were processed offline using the SAGE/IDL software. Peak integral values of inorganic phosphor, phosphocreatine, and ATPs were measured. Peak integral values of inorganic phosphor were decreased from 1.44% to 16.62% (meanplusmnSD, 8.2plusmn4.60). Peak integral values of phosphocreatine were increased from 1.06% to 8.64% (4.54plusmn2.74). Peak integral values of gammaATP were increased from 0.75% to 15.97% (5.94plusmn6.10); alphaATP from 1.21% to 16.05% (7.04plusmn6.14); betaATP from 1.01% to 7.12% (3.08plusmn2.30). Brain mitochondrial activities were increased and more ATPs were produced after oxygen inhalation in healthy volunteers.
Engineering in Medicine and Biology Society, 2007. EMBS 2007. 29th Annual International Conference of the IEEE; 09/2007
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ABSTRACT: The purpose of this study was to explore mitochondrial activities after oxygen inhalation by 31P magnetic resonance spectroscopy. Six healthy volunteers were studied using a GE 3T scanner. A spin-echo MRS sequence was utilized with a GE service coil. TR was 2000 msec and TE 35 msec with 128 scan averages. Before 31P scan, a 1H MRS pre-scan was performed to obtain shimming values. Exact two 31P scans were performed before and after oxygen inhalation through nasal cannula at a flow rate of 10 L/min. Data were processed offline using the SAGE/IDL software. Peak integral values of inorganic phosphor, phosphocreatine, and ATPs were measured. Peak integral values of inorganic phosphor were decreased from 1.44% to 16.62% (mean+/-SD, 8.2+/-4.60). Peak integral values of phosphocreatine were increased from 1.06% to 8.64% (4.54+/-2.74). Peak integral values of gammaATP were increased from 0.75% to 15.97% (5.94+/-6.10); alphaATP from 1.21% to 16.05% (7.04+/-6.14); betaATP from 1.01% to 7.12% (3.08+/-2.30). Brain mitochondrial activities were increased and more ATPs were produced after oxygen inhalation in healthy volunteers.
Conference proceedings: ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference 02/2007; 2007:2899-902.
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ChemPhysChem 02/2007; 8(1):64-7. · 3.41 Impact Factor
