The Study of Left Ventricular Contraction Pattern with Aneurysm by using ECG gated Equilibrium Scintigraphy Yoshihiro Futamura 1 , Junichi Sakurai 1 , Kazuyoshi Sakakura 1 , Hideo Nomura 2 , Kenzo Yasuura 3 , Hiroshi Okamoto 3 1Cardiovascular Division of Meitetsu Hospital 2First Department of Internal Medicine, Nagoya University 3Second Department of Surgery, Nagoya University pp.359-363
Published Date 1985/3/15
DOI https://doi.org/10.11477/mf.1404204627
  • Abstract
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ECG gated cardiac blood pool scintigraphy is a useful clinical tool as a noninvasive method to evalu-ate the cardiac peformance. Recently, Fouier trans-formation of time activity curve (TAC) of each pixel is used as a temporal filter. And the phase image is synthetized by computor from the phase values of the first harmonics of pixels. The phase image reflects the cardiac contraction pattern. In this study, the phase analysis was used to analyze the left ven-tricular function with the left ventricular aneurysm. The phase analysis was performed on the region of interest of the diastolic left ventricle. The dyskinetic region was decided as a part with delayed phase from the phase histogram. The residual area was non-dyskinetic region. Two regions of interest were made on the dyskinetic and the non-dyskinetic re-gion (special phase image,), and TAC were calcula-ted on these two regions. And the regional left ven-tricular function was analyzed from these two TAC. In the case of the left ventricular aneurysm, in the dyskinetic region TAC increased in the systolic phase and then decreased in the early diastolic phase-that is, -dyskinetic motion. In the systolic phase, the input volume from the non-dyskinetic region to the dyskinetic region was able to be cal-culated easily.

By using such a method on ECG gated cardiac blocd pool scintigraphy, the left ventricular contrac-tion pattern with the aneurysm was able to be eva-luated semiquantitatively and non-invasively. But in this method, it is limited to use only left anterior oblique view because of the necessity to avoid the overlapping of left ventricular and right ventricular images.

Copyright © 1985, Igaku-Shoin Ltd. All rights reserved.


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