title: Letter: 131I-IHSA versus 169Yb-DTPA for "cisternography".
mesh_terms: D002946:Cisterna Magna; D006801:Humans; D004369:Pentetic Acid; D011877:Radionuclide Imaging; D012711:Serum Albumin, Radio-Iodinated; D015018:Ytterbium
chemical_list: D012711:Serum Albumin, Radio-Iodinated; D004369:Pentetic Acid; D015018:Ytterbium