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Radiotechnetium Polyphosphate Joint Imaging

The Montreal General Hospital, Montreal, Quebec, Canada

Correspondence: For reprints contact: Leonard Rosenthall, Div. of Nuclear Medicine, The Montreal General Hospital, 1650 Cedar Avenue, Montreal 109, Quebec, Canada.

ABSTRACT

An assessment of the efficacy of ^99mTc-polyphosphate (^99mTcPP) in the disclosure of synovitis in 27 patients is presented. A comparison was made between ^99mTcPP, clinical evaluation, ^99mTcO₄, and radiography. In general ^99mTcPP was found to be more sensitive in the detection of inflammatory synovitis in peripheral joints than the other three methods, but it is also non-specific as increased periarticular accretions were found in degenerative osteoarthritis, metabolic bone disease, and trauma. Although ^99mTcPP joint imaging qualifies as a screening procedure, regions of increased uptake should be radiographed to determine whether other causative factors exist.

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