I Am Type 2 Diabetic And Hypertension Since 10 Years

I am type 2 diabetic and hypertension since 10 years . Medication Gimmer -1 one tablet daily and tozar- H 1 tablet daily Ecosprin - AV - 75 Daily 1 tablet . ECG Normal , TMT - Good Effort tolerance , Adequate HR and BP Response . Mild ST Changes noted during peak excise and recovery . Test is mildy Positivr for inducible ischemia .Doctor advised CAG . is it necessary to go for CAG . is there any other easy procedure to rule out TMT mildy positive .