SYN: cephalometric radiograph.
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ceph·a·lo·gram 'sef-ə-lə-.gram n a radiograph of the head esp. for orthodontic purposes
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n.
a special standardized X-ray picture that can be used to measure alterations in the growth of skull bones.
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ceph·a·lo·gram (sefґə-lo-gram) [cephalo- + -gram] cephalometric radiograph.Medical dictionary. 2011.