ABSTRACT BACHELOR OF APPLIED SCIENCE PROGRAM IMAGING RADIOLOGY TECHNOLOGY STUDY PROGRAM RADIODIAGNOSTICS AND RADIOTHERAPY DEPARTMENT HEALTH POLYTECHNIC OF HEALTH MINISTRY JAKARTA II THESIS, 2025 EVA ELVIRA EVALUATION OF THE EFFECT OF SLICE THICKNESS VARIATIONS ON IMAGE QUALITY IN NON-CONTRAST UROGRAPHY CT SCANS FOR NEPHROLITHIASIS CASES UNDERTAKEN AT CUT MEUTIA REGIONAL GENERAL HOSPI…