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Updated: Dec 17, 2025

Treatment of Facial Deformities using 3D Planning and Printing of Patient-Specific Implants
Published on: May 23, 2020
Choosing the best method to utilise single positron emission computed tomography (SPECT) scans in the management of
K S B Surendran1, M A Cobb1, D J W Keith1
1Sunderland Hospital, Kayll Road, Sunderland, SR4 7TP.
Abstract:
Facial asymmetry secondary to unilateral condylar hyperplasia can be a diagnostic challenge to oral and maxillofacial surgeons. Single positron emission computed tomography (SPECT) scans provide a useful adjunct. We report a brief summary of the evidence describing the effectiveness of different methods of analysing SPECT scans and compare it with the results of a 10-year study at Sunderland Royal Hospital. Overall, both the evidence base and our study strongly favour use of the condyle:condyle ratio over the condyle:reference bone ratio, suggesting that no further comparisons are needed.

