Patent ID: 8692039

Claim:
A device for preparing a radioactive methyl iodide (CH 3 131 I) tracer, the device comprising: a radioactive methyl iodide synthesis flask used for a substitution reaction between methyl iodide and radioactive iodine; a pressure reducing valve disposed in a side of the radioactive methyl iodide synthesis flask and used for reducing an inner pressure of the device; a methyl iodide-vapor fractionation unit positioned vertically above the radioactive methyl iodide synthesis flask, coupled directly to an upper portion of the radioactive methyl iodide synthesis flask, and separating methyl iodide from vapor, the methyl iodide-vapor fractionation unit having a bulb shape and including a guide tube inside an upper portion thereof so that gasified CH 3 ( 127 I+ 131 I) is moved upwards and vapor is moved downwards, thereby increasing separation of methyl iodide and vapor; a methyl iodide-vapor condensate separator positioned vertically above the methyl iodide-vapor fractionation unit, coupled directly to the upper portion of the methyl iodide-vapor fractionation unit, and collecting pure methyl iodide using a difference in specific gravity; and a gaseous methyl iodide condenser-methyl iodide condensate collector positioned vertically above the methyl iodide-vapor condensate separator, coupled directly to an upper portion of the methyl iodide-vapor condensate separator, condensing methyl iodide, and collecting condensed methyl iodide.