MARKABLE IN VIVO WITH 99M-TC DIAGNOSTICAL STOCK FOR MEASURING OF THE REGIONAL BLOOD-FLOWING OF THE BRAIN AND MARKING THE FORMED PARTCLES OF BLOOD AND PROCESS FOR PRODUCTION OF D,L-4,8-DIASE 3,6,6,9-TETRAMETHIL INDICATIVE-2,10-DION-BIS-OXIM AND THE MARKED ITS FORM WITH 99-M-TC