A Comparison of Body Surface Laplacian and Potential Maps During Paced Ventricular Activation

Abstract:

The objective of this study is to evaluate the spatial resolution of body surface Laplacian maps (BSLMs) in localizing ventricular electrical activity by means of computer simulation. A 3-D computer heart-torso model was used to simulate cardiac electrical activity and the body surface maps. A two-site pacing protocol was used to generate two simultaneously activated myocardial events on the anterior epicardial wall and the anterior endocardial wall. Following the pacing, the BSLMs and the body surface potential maps (BSPMs) were calculated and compared with the known activation pattern. As a result, the BSLMs showed superior resolution than the BSPMs for localized initial ventricular activity. In summary, the present study suggests that body surface Laplacian mapping may provide a useful methodology for the clinical diagnosis of cardiac electrical abnormalities.

Keywords:

Spatial Resolution - Computer Simulation - Body Surface Laplacian Maps - Body Surface Potential Maps

• REFERENCES

• 1 He B, Cohen RJ. Body surface Laplacian ECG mapping. IEEE Trans on BME 1992; 39: 1171-91.
• 2 He B, Parati G, Yin JZ, Cohen RJ. Detecting cardiac activation sequence from body surface Laplacian maps. J Electrocardiol 1992; 25 Suppl, 109-10.
• 3 Yin JZ, He B, Cohen RJ. A 3-D finitef element cardiac model and its application to body surface Laplacian mapping. Comput in Cardiol. 1992: 247-50.
• 4 Ono K, Yin JZ, He B, Cohen RJ. A 3-D computer simulation study of body surface Laplacian mapping: Myocardial infarction. Proc of 15th Ann Int. Conf of IEEE Eng in Med and Biol Society. 1993: 804-5.
• 5 Ono K, He B, Yin JZ, Cohen RJ. A 3-D computer simulation study of body surface Laplacian maps during ventricular activation. Proc of 16th Ann Int Conf of IEEE Eng in Med and Biol Society. 1994: 149-50.
• 6 Harasawa E, Wei D, He B. Comparison of body surface potential maps and Laplacian maps: A simulation study. Proc of 17th Ann Int. Conf of IEEE Eng in Med and Biol Society 1995 1.4.2.3.
• 7 Wei D, Harasawa E, He B. Simulated body surface potential and Laplacian maps during the left ventricular breakthrough. Proc of 17th Ann Int Conf of IEEE En in Med and Biol Society 1995 1.4.2.4.
• 8 He B. Laplacian electrocardiography. Med. Biol Eng Comput 1996; 34 Suppl, Part 21996: 29-30.
• 9 Ono K, Hosaka H, Wei D, He B. Effect of interelectrode distance on derivation of body surface Laplacian maps from potentials: A model study. Proc of 17th Ann Int Conf of IEEE Eng in Med and Biol Society 1995 1.4.2.2.