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  • Title: Chronic osteomyelitis: diagnosis with technetium-99m-d, l-hexamethylpropylene amine oxime labelled leucocytes.
    Author: Krznaric E, Roo MD, Verbruggen A, Stuyck J, Mortelmans L.
    Journal: Eur J Nucl Med; 1996 Jul; 23(7):792-7. PubMed ID: 8662118.
    Abstract:
    To evaluate the diagnostic value of technetium-99m d, l-hexamethylpropylene amine oxime (HMPAO) labelled leucocytes in combination with a 99mTc-methylene diphosphonate (MDP) bone scan in the detection of chronic osteomyelitis, we retrospectively reviewed 55 patients. Prior to the 99mTc-d,l-HMPAO labelled leucocyte scan, all patients underwent a 99mTc-MDP bone scan. The correct diagnosis was confirmed by long-term clinical follow-up (n=29) or by bacteriological cultures (n=26). We found an overall sensitivity of 94%, a specificity of 91% and an accuracy of 92% for 99mTc-d,l-HMPAO labelled leucocyte scintigraphy in the diagnosis of chronic osteomyelitis. When the patients were divided into three groups according to the location of the infection, our study results showed a sensitivity and specificity for the central location (containing active bone marrow) of 94% and 100% respectively; for the peripheral location (hands and feet) both parameters were 100%, and for the middle location (all sites between the central and the peripheral location) the values were 92% and 81% respectively. Specificity and accuracy were significantly lower in the middle location than in the central and peripheral locations. The results of our study confirm that a 99mTc-d,l-HMPAO labelled leucocyte scan in combination with an 99mTc-MDP bone scan is a reliable way to diagnose chronic osteomyelitis, except for vertebral osteomyelitis.
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