Skip Navigation LinksHome > January 2014 - Volume 39 - Issue 1 > Three-Phase Bone Scintigraphy for Imaging Osteoradionecrosis...
Clinical Nuclear Medicine:
doi: 10.1097/RLU.0000000000000296
Original Articles

Three-Phase Bone Scintigraphy for Imaging Osteoradionecrosis of the Jaw

Lapa, Constantin MD*; Linz, Christian MD; Bluemel, Christina MD*; Mottok, Anja MD; Mueller-Richter, Urs MD; Kuebler, Alexander MD; Schneider, Peter MD*; Czernin, Johannes MD§; Buck, Andreas K. MD*; Herrmann, Ken MD

Collapse Box

Abstract

Abstract: This study evaluates the diagnostic utility of 3-phase bone scintigraphy for diagnosing osteoradionecrosis of the jaw (ORNJ).

Methods: Thirty-two consecutive patients with a history of radiation to the head and neck region (range, 62–70 Gy; mean, 68 Gy; median, 69 Gy) due to squamous cell cancer and suspected ORNJ underwent 3-phase bone scans after injection of 520 to 750 MBq of 99mTc-MPD. In addition to planar scans, tomographic images (SPECT) were acquired in the second phase and SPECT/CT images during the third phase. Histopathologic findings (n = 18) and clinical follow-up (n = 14) served as reference standard for osteoradionecrosis.

Results: The first, second, and third phases of planar images were rated positive in 18/32 patients (56.3%), 25/32 (78.1%), and 27/32 patients (84.4%), respectively. The late SPECT was positive in all patients (32/32, 100%), respectively. Histopathologic findings available in 18/32 patients (56.3%) confirmed ORNJ in all subjects. Acute inflammation was histologically proven in 18/18 specimens (100%) and additional chronic inflammation in 12/18 (66.7%). In 13/18 (72.2%) specimens, superinfection was evident histopathologically. A photopenic defect with surrounding hypermetabolism, a reported hallmark of ORJN, was found in less than 5%.

Conclusions: The predominant scintigraphic pattern of osteoradionecrosis includes increased bone mineralization phase in all patients. Central photopenia, reportedly a typical bone scan finding in bisphosphonate-induced osteonecrosis, was not characteristic for ORNJ. A differentiation of acute from chronic inflammatory processes was not possible.

© 2014 by Lippincott Williams & Wilkins

Login

Article Level Metrics

Search for Similar Articles
You may search for similar articles that contain these same keywords or you may modify the keyword list to augment your search.