Limits...
Three-Dimensional Visualization of Myocardial Ischemia Based on the Standard Twelve-Lead Electrocardiogram.

Ma Y, Sheng Y, Ruixia T, Xun C - Comput Math Methods Med (2016)

Bottom Line: A novel method was proposed for transforming the ischemic information in the 12-lead electrocardiogram (ECG) into the pseudo-color pattern displayed on a 3D heart model based on the projection of a ST injury vector in this study.The projection of the ST injury vector at a point on the heart surface was used for identifying the presence of myocardial ischemia by the difference between the projection value and the detection threshold.In addition, the diagnostic accuracy of the proposed method was further confirmed by the coronary angiography.

View Article: PubMed Central - PubMed

Affiliation: Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, Anhui 230027, China.

ABSTRACT
A novel method was proposed for transforming the ischemic information in the 12-lead electrocardiogram (ECG) into the pseudo-color pattern displayed on a 3D heart model based on the projection of a ST injury vector in this study. The projection of the ST injury vector at a point on the heart surface was used for identifying the presence of myocardial ischemia by the difference between the projection value and the detection threshold. Supposing that myocardial ischemia was uniform and continuous, the location and range of myocardial ischemia could be accurately calculated and visually displayed in a color-encoding way. The diagnoses of the same patient were highly consistent (kappa coefficient k = 0.9030) between the proposed method used by ordinary people lacking medical knowledge and the standard 12-lead ECG used by experienced cardiologists. In addition, the diagnostic accuracy of the proposed method was further confirmed by the coronary angiography. The results of this study provide a new way to promote the development of the 3D visualization of the standard 12-lead ECG, which has a great help for inexperienced doctors or ordinary family members in their diagnosis of patients with myocardial ischemia.

No MeSH data available.


Related in: MedlinePlus

Myocardial ischemic region on the 3D heart model of a 60-year-old male patient.
© Copyright Policy
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4940520&req=5

fig4: Myocardial ischemic region on the 3D heart model of a 60-year-old male patient.

Mentions: Coronary angiography is the gold standard for the diagnosis of coronary artery stenosis. The left anterior descending, left circumflex, and right coronary artery supply blood to their respective regional myocardium. The corresponding myocardial region will be ischemic when a coronary artery stenosis occurs. It can be said that coronary angiography is one of the most reliable solutions to verify the display of myocardial ischemia on the 3D heart model. We conducted a total of 72 cases of comparative clinical trials, and the correct rate of display of myocardial ischemia on the 3D heart model was 98.4%. The myocardial ischemic region on the 3D heart model of a 60-year-old male patient is shown in Figure 4. Coronary angiography confirmed that the patient suffered from 40% stenosis of his left marginal artery and 50% of his left circumflex.


Three-Dimensional Visualization of Myocardial Ischemia Based on the Standard Twelve-Lead Electrocardiogram.

Ma Y, Sheng Y, Ruixia T, Xun C - Comput Math Methods Med (2016)

Myocardial ischemic region on the 3D heart model of a 60-year-old male patient.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4940520&req=5

fig4: Myocardial ischemic region on the 3D heart model of a 60-year-old male patient.
Mentions: Coronary angiography is the gold standard for the diagnosis of coronary artery stenosis. The left anterior descending, left circumflex, and right coronary artery supply blood to their respective regional myocardium. The corresponding myocardial region will be ischemic when a coronary artery stenosis occurs. It can be said that coronary angiography is one of the most reliable solutions to verify the display of myocardial ischemia on the 3D heart model. We conducted a total of 72 cases of comparative clinical trials, and the correct rate of display of myocardial ischemia on the 3D heart model was 98.4%. The myocardial ischemic region on the 3D heart model of a 60-year-old male patient is shown in Figure 4. Coronary angiography confirmed that the patient suffered from 40% stenosis of his left marginal artery and 50% of his left circumflex.

Bottom Line: A novel method was proposed for transforming the ischemic information in the 12-lead electrocardiogram (ECG) into the pseudo-color pattern displayed on a 3D heart model based on the projection of a ST injury vector in this study.The projection of the ST injury vector at a point on the heart surface was used for identifying the presence of myocardial ischemia by the difference between the projection value and the detection threshold.In addition, the diagnostic accuracy of the proposed method was further confirmed by the coronary angiography.

View Article: PubMed Central - PubMed

Affiliation: Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, Anhui 230027, China.

ABSTRACT
A novel method was proposed for transforming the ischemic information in the 12-lead electrocardiogram (ECG) into the pseudo-color pattern displayed on a 3D heart model based on the projection of a ST injury vector in this study. The projection of the ST injury vector at a point on the heart surface was used for identifying the presence of myocardial ischemia by the difference between the projection value and the detection threshold. Supposing that myocardial ischemia was uniform and continuous, the location and range of myocardial ischemia could be accurately calculated and visually displayed in a color-encoding way. The diagnoses of the same patient were highly consistent (kappa coefficient k = 0.9030) between the proposed method used by ordinary people lacking medical knowledge and the standard 12-lead ECG used by experienced cardiologists. In addition, the diagnostic accuracy of the proposed method was further confirmed by the coronary angiography. The results of this study provide a new way to promote the development of the 3D visualization of the standard 12-lead ECG, which has a great help for inexperienced doctors or ordinary family members in their diagnosis of patients with myocardial ischemia.

No MeSH data available.


Related in: MedlinePlus