ADRENAL SUPPRESSION TEST (Y56,169)

131I-ADOSTEROL & DEXAMETHASONE

1.PREPARATION

-(7DAYS) START KI (POTASSIUM), 300mg (3TIMES/A DAY), TO BLOCK THYROID UPTAKE.
-(3DAYS) BEFORE 131I-ADOSUTAROL INJECTION (DEXAMETHASONE) IS GIVEN (4mg/DAY) FOR 10DAYS, TO SUPPRESS NORMAL ADRENAL.

    *--------------4DAYS-------------*----------3DAYS---------------------*-----------7DAYS-----------------*
START(Kl)                                   START(DEXAMETHASONE)                        INJECT(131I)                                     START IMAGING


2.PROCEDURE+EXAMINATION TIME

-(1WEEK)POST INJECTION START IMAGING
(1WEEK POST 131I-ADOSTEROL INJECTION), (STATIC), (256*256), (PRESET TIME=30MIN), (SUPINE), (ANT,POST), (HEGAP), (I WINDOW=364KEV, 20%), (TOTAL TIME=60MIN)

3.DOSE
131I-ADOSTEROL = 37MBq (1 mCi)