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. Author manuscript; available in PMC: 2011 Jan 30.
Published in final edited form as: Phys Med Biol. 2010 Feb 4;55(5):1279–1293. doi: 10.1088/0031-9155/55/5/002

Figure 2.

Figure 2

A top view (not to scale) of the CCD-based optical-CT scanner (54 mm × 72 mm FOV) illustrates the rejection of nonparallel light (dashed lines). A CCD camera and telecentric lens (a) only accepts incoming light rays that are parallel to the optical axis within 0.2°. An aquarium (b) houses refractive index matching fluid, PRESAGE® sample and rotation stage. The sample rotates within the aquarium while multiple projection images are acquired. The refractive index matching fluid limits reflection and refraction of light traversing the sample. The uniform monochromatic backlight (c) emits a narrow band of wavelengths centered on 633 nm.