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Indium-111-labeled white blood cells in the detection of osteomyelitis complicated by a pre-existing condition

Journal Article · · J. Nucl. Med.; (United States)
OSTI ID:7140430
Forty-six patients (23M, 23F) ranging in age from 19 to 79 yr with a clinical history of a nonunion fracture, surgery, diabetes or a soft-tissue infection were studied with (/sup 111/In)oxine WBCs to detect osteomyelitis. There were 27 true-positive, nine true-negative, two false-positive and one false-negative. The false-positives and the false-negative occurred in patients with soft-tissue infections overlying the area of interest. All diagnoses were confirmed by intraoperative bone biopsies and cultures. Bone biopsy and scan were performed within 2 days of each other in 39 patients. The overall sensitivity was 97% (27/28), specificity, 82% (9/11) and the diagnostic accuracy, 92% (36/39). The remaining seven patients had negative (/sup 111/In)WBC scans several months after positive bone biopsies and definite antibiotic treatment. This suggests that (In)WBC scans become negative after appropriate therapy is undertaken. Interobserver data was obtained from four nuclear physicians of varying experience blinded to clinical information. A high degree of agreement was found in over 90% of the cases. This study demonstrates the utility of (/sup 111/In)WBC scans in the diagnosis and follow-up of complicated osteomyelitis and a high level of interobserver agreement in scan interpretation.
Research Organization:
Hospital of the Univ. of Pennsylvania, Philadelphia (USA)
OSTI ID:
7140430
Journal Information:
J. Nucl. Med.; (United States), Journal Name: J. Nucl. Med.; (United States) Vol. 29:6; ISSN JNMEA
Country of Publication:
United States
Language:
English