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Quality assessment in in vivo NMR spectroscopy: III. Clinical test objects: design, construction, and solutions
M O Leach1, D J Collins, S Keevil
1CRC Clinical Magnetic Resonance Research Group, Institute of Cancer Research, Sutton, Surrey, UK.
Abstract:
Based on the requirements of test protocols developed to evaluate clinical MRS single slice and volume localisation sequences, two clinical test objects, STO1 and STO2 have been developed. The properties of a range of potential construction materials have been assessed, demonstrating that the water/Perspex interface produced minimum susceptibility effects. The design of the objects has been evaluated in trials on different magnetic resonance instruments, with size and loading being adjusted to allow use on currently available equipment. Appropriate test solutions for 31P and 1H measurements have been developed and their properties evaluated.