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. Author manuscript; available in PMC: 2010 May 11.
Published in final edited form as: Magn Reson Med. 2008 Dec;60(6):1433–1443. doi: 10.1002/mrm.21771

Figure 4. Proton spectra, SMRI and WASPI images, and photograph of a cortical bone specimen, marrow specimen, and polymer phantoms.

Figure 4

a) Single-pulse (SMRI excitation) proton NMR spectrum of the marrow specimen. Water and fat peaks were at 0.00 and −3.50 ppm, respectively. b) Water and fat suppressed (WASPI excitation) proton spectrum of the marrow specimen. The two peaks were reduced down to the baseline. c) SMRI image of the specimen (no water and fat suppression). The central 32 slices from the complete image data set of 64 slices are shown. d) WASPI image of the same specimen. e) Photograph (from right to left) of the specimen holder, marrow specimen, bone specimen, and three polymer pellets. The diameter of the cylindrical polymer pellets was 0.52 cm and thickness varied from 0.30 to 0.35 cm, with densities of 1.171, 0.800, and 0.557 g cm−3 respectively.