A new cardiac CT scan machine, which reduces radiation exposure and displays better images, has been installed at a South Delhi-based imaging centre. It is expected to improve diagnosis of coronary heart disease (CHD).

Experts at Mahajan Imaging Centre in Hauz Khas said it was India's first dual energy CT scan machine with cardiac spectral imaging capabilities. Known as the 'Discovery CT750-HD FREEdom Edition' by GE Healthcare, this machine will help doctors diagnose CHD.

CHD occurs when arteries near the heart are narrowed or blocked by deposits of fatty plaque and calcium in vessels. If left unchecked, these blockages can lead to heart attacks.

Dr Harsh Mahajan, president of Indian Radiological and Imaging Association, said, "With most CT scan machines it is difficult to see the condition of the heart vessels because calcium deposits would obscure our view. Even if we managed to see the blockage, it was difficult to identify the nature of deposit."

Dr JPS Sawhney, cardiology department chairman at Sir Ganga Ram Hospital, said, "The machine will let radiologists see if the heart tissue is living or not. It will help us take correct decisions about further course of treatment."