Non-contrast CT scanning: limited value in suspected brain tumor.
Most patients who have computed tomography because of a suspected brain tumor are subjected to a noncontrast scan followed by a contrast study. Analysis of the scans of all such patients over a two-year period indicates that in most cases a single contrast scan affords the same degree of diagnostic accuracy as a combined pre- and postcontrast study.
D001932:Brain Neoplasms / Q000000981:diagnostic imaging*; D003287:Contrast Media; D006801:Humans; D009362:Neoplasm Metastasis; D011446:Prospective Studies; D011856:Radiographic Image Enhancement; D014057:Tomography, X-Ray Computed
D003287:Contrast Media