title: Over-all accuracy of 99mTc-pertechnetate brain scanning for brain tumours--study of 471 patients.
abstract: A 3-year follow-up and re-evaluation of all scans on all patients referred for brain scanning in Iceland during 1 year was performed in order to assess the diagnostic reliability of radioisotope scanning for brain tumours. The study included 471 patients. Of these 25 had primary brain tumours and 7 brain metastases. Scans were positive and correctly interpreted in 68% of the patients with primary brain tumours and in 3 of the 7 patients with metastases. The over-all accuracy of brain scanning for brain tumours defined as the total number of correct positive scans and correct negative scans versus total number of scans examined was 96%, this figure being mainly influenced by the high number of true negative scans.
mesh_terms: D000792:Angiography; D001921:Brain / Q000000981:diagnostic imaging*; D001932:Brain Neoplasms / Q000000981:diagnostic imaging*; D005069:Evaluation Studies as Topic; D006801:Humans; D009362:Neoplasm Metastasis; D011877:Radionuclide Imaging; D013667:Technetium
chemical_list: D013667:Technetium