orthogonal radiographs

or·thog·o·nal ra·di·o·graphs

(ōr-thog'ŏ-năl rā'dē-ō-grafs)
Two radiographs imaged 90 degrees apart; used in planning the treatment process for radiation.
References in periodicals archive ?
However, what may appear as adequate on CT images to a radiologist may not be acceptable because fiducial tracking is obtained using orthogonal radiographs, from which digitally reconstructed radiographs are made.
The positions of these guide-wires were checked on orthogonal radiographs (Fig.
Additional orthogonal radiographs were taken to verify head position.
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