Aggarwal started his practice at the Diwan Chand Aggarwal Imaging Centre and Research Centre, run by his elder brother, Dr. S. P. Aggarwal, in 1959, specializing in Gastrointestinal and Uroradiology[REF][REF] and took over the management of the centre in 1989, on the death of his brother [REF].
Aggarwal has co-authored a three volume book, Diagnostic Radiology and Imaging [REF].