BACHELOR OF APPLIED SCIENCE PROGRAMrnIMAGING RADIOLOGY TECHNOLOGY STUDY PROGRAM rnRADIODIAGNOSTICS AND RADIOTHERAPY DEPARTMENTrnHEALTH POLYTECHNIC OF HEALTH MINISTRY rnJAKARTA IIrnrnTHESIS, 2025rnNISRINA NAZLA KHAERUNISArnrnANALYSIS OF EXTERNAL RADIATION THERAPY MANAGEMENT IN PEDIATRIC PATIENTS WITH METASTATIC BRAIN NEUROBLASTOMA USING 3D-CRT TECHNIQUE UNDERTAKEN AT RADIOTHERAPY DEPARTMENT OF M…