A reproducible technique of bone scanning in prostatic cancer is described that helps ensure the production of successive studies of highly comparable technical quality. Through an analysis of survival data based on changes in distribution, anatomic extent, and intensity of bone scan abnormalities in patients with advanced prostatic cancer, it is demonstrated that alterations in the appearance of the bone scan correlate closely with disease activity and have great prognostic significance.Cancer 47:2585-2594, 1981.
ADLOISOTOPE B O N E SCANS are widely employedR for the early detection of skeletal metastasis from primary carcinoma of the Little attention has been directed to the use of serial nuclear bone imaging in the follow-up of metastatic cancer of the prostate after the initiation of A major barrier to the assessment of changes seen in serial scans has been the inability to produce scans of similar quality so that changes in disease activity can be distinguished from those caused by differences in technique or instrumentation. The purpose of this report is two-fold. First, a refined technique of bone scanning is described that helps ensure the production of successive scans that are of equal and comparable quality. When scans are performed using this technique, changes that occur in time on serial studies can be reliably attributed to alterations in disease activity rather than to differences in technique. Second, an attempt is made to validate that progression or regression of scan abnormalities do indeed accurately reflect progression or regression of metastatic disease by demonstrating that changes seen on serial scintigrams correlate highly with patient survival data.