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. 2018 Dec 4;5:28. doi: 10.1186/s40658-018-0228-5

Fig. 1.

Fig. 1

Illustration of the field of view (FOV) of the discussed collimators. From left to right: parallel hole collimator, cone beam collimator (50 cm), cone beam collimator (100 cm), and multifocal collimator