The reliability of 99mmTc-pyrophosphate scintigraphy in the diagnosis of bony metastases.

A series of 183 patients suffering from cancer examined with 99mTc-yrophosphate scintigraphy is presented. Of the 74 cases with radiologically confirmed metastases or primary tumour in the skeleton 67 (91%) had an isotope accumulation. Four cases with false positive accumulations were detected.