Diagnosis of bone, joint, and joint prosthesis infections with In-111-labeled nonspecific human immunoglobulin G scintigraphy.
The diagnostic accuracy of scintigraphy performed after injection of indium-111-labeled nonspecific human immunoglobulin G (IgG) was studied in 113 patients with 120 foci of suspected infection in bone (52 chronic and eight acute infections), joints (15 localizations), joint prostheses (37 prostheses), and soft tissue of the locomotor system (eight localizations). All patients also underwent standard three-phase scintigraphy after injection of technetium-99m-labeled methylene diphosphonate. A scan obtained with In-111-labeled IgG was considered positive if focal increasing accumulation was noted over time. In 51 patients (45.1%), the results of scintigraphy were verified with intraoperative cultures, and in 21 patients (18.6%), with needle aspiration. The prevalence of infection was 59%; overall sensitivity, 97%; and specificity, 85%. Use of In-111-labeled IgG enabled correct identification of the presence, site, and extent of infection in 69 of 71 proved foci of infection; 41 of 48 negative studies were correct. Only two infections proved with culture were missed; in both patients, the cultures revealed growth of Staphylococcus aureus in low counts.
Oyen
W J
WJ
Department of Nuclear Medicine, University Hospital Nijmegen, The Netherlands.
van Horn
J R
JR
Claessens
R A
RA
Slooff
T J
TJ
van der Meer
J W
JW
Corstens
F H
FH
D001170:Arthritis, Infectious / Q000000981:diagnostic imaging* / Q000453:epidemiology; D006801:Humans; D016756:Immunoglobulins, Intravenous; D007205:Indium Radioisotopes; D007595:Joint Prosthesis / Q000009:adverse effects*; D010019:Osteomyelitis / Q000000981:diagnostic imaging* / Q000453:epidemiology; D015995:Prevalence; D016459:Prosthesis-Related Infections / Q000000981:diagnostic imaging* / Q000453:epidemiology; D016719:Radioimmunodetection; D012680:Sensitivity and Specificity; D013203:Staphylococcal Infections / Q000000981:diagnostic imaging* / Q000453:epidemiology; D013669:Technetium Tc 99m Medronate
D016756:Immunoglobulins, Intravenous; D007205:Indium Radioisotopes; D013669:Technetium Tc 99m Medronate