the authors have studied eight patients with malignant brain tumors in order to compare tumor uptake of an iodinated contrast agent evaluated by computerized tomography scanning with uptake of the low and high molecular weight imaging agents technetium-99m ( 99mtc ) -glucoheptonate and 99mtc-albumin , respectively , measured by radionuclide brain scanning .
C0153633
malignant brain tumors
C0006104
brain