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In order to ascertain the most suitable B-scanning technique for ultrasonography of the eye and orbit, a schematic eye was constructed for calculating the results of sound refraction. The beamdeflections were calculated for linear (parallel), sector, and arc (circle section) scan. Extended experimental meridional measurements confirmed the results of these calculations. arc scans proved unequivocally superior to all other modes and gave rise to minimaldistortions of the echogram due to refraction effects.
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Buschmann et al. (2009) studied this question.
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