The reliability of renal images using the 99mTc-labeled bone-seeking radiopharmaceuticals was evaluated by comparing abnormal renal images on bone scan with IVP and, conversely, abnormal findings on IVP with renal images on bone scan. Several findings on the bone scan renal images were associated with abnormalities on IVP. However, some conditions may not be detected on the bone scan images which are demonstrated on IVP. Results suggest that an abnormality of the renal image on bone scan warrants further investigation while a normal renal image does not exclude renal pathology.