Determination of sequestrum activity by SPECT with CT correlation in chronic osteomyelitis of the head and neck.

Use of single photon emission computerized tomography (SPECT) with Tc 99m HDP for localization of an active sequestrum in a case of chronic head and neck osteomyelitis is described. Correlation with x-ray computed tomography (CT) for anatomy was helpful for surgical debridement. The potential of the complementary roles of SPECT and CT in chronic head and neck osteomyelitis for assessing sequestrum activity and anatomy prior to surgery is discussed.