AIM  To investigate the change of magnetocardiography (MCG) parameters in patients with lesions in different coronary arteries.

  METHODS  99 CHD patients with monovascular lesion were recruited to test the diagnostic accuracy of 10 MCG parameters (Map angle on T peak, TT_Map angle maximum, TT_Map angle minimum, TT_Map angle dynamics, TT_Distance dynamics, Maximum-to-minimum ratio on T peak, Current angle at T peak, TT_Current angle maximum, TT_Current angle minimum and TT_Current angle dynamics), with 91 non-CHD patients serving as a control group. CHD Patients were divided into a LAD group (n = 44), a LCX group (n = 25), and a RCA group (n=30).

  RESULTS  Compared to the control group, Map angle on T peak was significantly higher in the LAD group (P < 0.05) and the LCX group (P < 0.01). TT_Map angle maximum and TT_Map angle dynamics were also higher in the LCX group, compared to the control group (all P < 0.01). In the RCA group, TT_Map angle minimum and TT_Distance dynamics were significantly lower (all P < 0.01), whereas TT_Current angle maximum and TT_Current angle dynamics were higher (all P < 0.01), compared to the control group. Map angle on T peak was significantly lower in the LAD group and the RCA group, compared with the LCX group (respectively, P < 0.01, P < 0.05). TT_Distance dynamics was lower in the RCA group, compared to the LAD group (P < 0.01).

  CONCLUSION  There were numerous parameters altered in patients with lesions in different coronary arteries.