Abstract
Objective: To determine the usefulness of vectorcardiography (VCG) in assessing myocardial infarct size. Methods: The correlation of spatial and scalar parameters of VCG with the percent defect volume (% DV) of thallium myocardial single photon emission computed tomography (SPECT) was investigated in 63 patients with first-onset myocardial infarction (MI). VCG parameters included: (1) spatial parameters: magnitude, azimuth and elevation of the maximal vector, vectors at 20 ms and 30 ms, and (2) scalar parameters: amplitudes of 20 ms and 30 ms vectors at X, Y, and Z scalar leads abbreviated as X20, Y20, Z20, X30, Y30 and Z30, respectively. Results: For anteroseptal MI, the azimuth of 30 ms vector and Z20 showed a significant correlation with % DV (r=0.572, P<0.05 and r=0.832, P<0.001) while in anteroseptal MI with involvement of lateral wall, the azimuth of 30 ms vector and X30 were correlated with %DV significantly (r=0.775, and 4=0.780, P<0.01). For inferior and inferoposterior MI, the elevation of 30 ms vector and Y30 were correlated well with %DV (r=0.871, P<0.01, r=0.928, P<0.001 for inferior MI and r=0.678, P<0.01, r=0.760, P<0.001 for inferoposterior MI). Conclusion: VCG parameters, especially scalar parameters, can be used to evaluate myocardial infarct size easily and non-invasively with remarkable accuracy.
| Original language | English |
|---|---|
| Pages (from-to) | 780-786 |
| Number of pages | 7 |
| Journal | Chinese medical journal |
| Volume | 112 |
| Issue number | 9 |
| Publication status | Published - 01-01-1999 |
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All Science Journal Classification (ASJC) codes
- Medicine(all)
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Vectorcardiographic evaluation of myocardial infarct size : Comparisons with thallium myocardial scintigraphy. / Wang, Jianhua; Kondo, Takeshi; Tokuda, Mamoru; Shinozaki, Hitoshi; Sarai, Masayoshi; Yasui, Tadashi; Ishii, Junichi; Kurokawa, Hiroshi; Nomura, Masanori; Hishida, Hitoshi; Watanabe, Yoshihiko.
In: Chinese medical journal, Vol. 112, No. 9, 01.01.1999, p. 780-786.Research output: Contribution to journal › Article
TY - JOUR
T1 - Vectorcardiographic evaluation of myocardial infarct size
T2 - Comparisons with thallium myocardial scintigraphy
AU - Wang, Jianhua
AU - Kondo, Takeshi
AU - Tokuda, Mamoru
AU - Shinozaki, Hitoshi
AU - Sarai, Masayoshi
AU - Yasui, Tadashi
AU - Ishii, Junichi
AU - Kurokawa, Hiroshi
AU - Nomura, Masanori
AU - Hishida, Hitoshi
AU - Watanabe, Yoshihiko
PY - 1999/1/1
Y1 - 1999/1/1
N2 - Objective: To determine the usefulness of vectorcardiography (VCG) in assessing myocardial infarct size. Methods: The correlation of spatial and scalar parameters of VCG with the percent defect volume (% DV) of thallium myocardial single photon emission computed tomography (SPECT) was investigated in 63 patients with first-onset myocardial infarction (MI). VCG parameters included: (1) spatial parameters: magnitude, azimuth and elevation of the maximal vector, vectors at 20 ms and 30 ms, and (2) scalar parameters: amplitudes of 20 ms and 30 ms vectors at X, Y, and Z scalar leads abbreviated as X20, Y20, Z20, X30, Y30 and Z30, respectively. Results: For anteroseptal MI, the azimuth of 30 ms vector and Z20 showed a significant correlation with % DV (r=0.572, P<0.05 and r=0.832, P<0.001) while in anteroseptal MI with involvement of lateral wall, the azimuth of 30 ms vector and X30 were correlated with %DV significantly (r=0.775, and 4=0.780, P<0.01). For inferior and inferoposterior MI, the elevation of 30 ms vector and Y30 were correlated well with %DV (r=0.871, P<0.01, r=0.928, P<0.001 for inferior MI and r=0.678, P<0.01, r=0.760, P<0.001 for inferoposterior MI). Conclusion: VCG parameters, especially scalar parameters, can be used to evaluate myocardial infarct size easily and non-invasively with remarkable accuracy.
AB - Objective: To determine the usefulness of vectorcardiography (VCG) in assessing myocardial infarct size. Methods: The correlation of spatial and scalar parameters of VCG with the percent defect volume (% DV) of thallium myocardial single photon emission computed tomography (SPECT) was investigated in 63 patients with first-onset myocardial infarction (MI). VCG parameters included: (1) spatial parameters: magnitude, azimuth and elevation of the maximal vector, vectors at 20 ms and 30 ms, and (2) scalar parameters: amplitudes of 20 ms and 30 ms vectors at X, Y, and Z scalar leads abbreviated as X20, Y20, Z20, X30, Y30 and Z30, respectively. Results: For anteroseptal MI, the azimuth of 30 ms vector and Z20 showed a significant correlation with % DV (r=0.572, P<0.05 and r=0.832, P<0.001) while in anteroseptal MI with involvement of lateral wall, the azimuth of 30 ms vector and X30 were correlated with %DV significantly (r=0.775, and 4=0.780, P<0.01). For inferior and inferoposterior MI, the elevation of 30 ms vector and Y30 were correlated well with %DV (r=0.871, P<0.01, r=0.928, P<0.001 for inferior MI and r=0.678, P<0.01, r=0.760, P<0.001 for inferoposterior MI). Conclusion: VCG parameters, especially scalar parameters, can be used to evaluate myocardial infarct size easily and non-invasively with remarkable accuracy.
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M3 - Article
VL - 112
SP - 780
EP - 786
JO - Chinese Medical Journal
JF - Chinese Medical Journal
SN - 0366-6999
IS - 9
ER -