ENHANCED SENSITIVITY FOR THE ASSESSMENT OF REGIONAL MYOCARDIAL WALL MOTION USING QUANTITATIVE GATED BLOOD POOL SPECT IMAGING

1992 ◽  
Vol 17 (6) ◽  
pp. 524
Author(s):  
M. W. Groch ◽  
R. C. Marshall ◽  
W. D. Erwin ◽  
D. J. Schippers ◽  
E. L. Lands
Keyword(s):  
Wall Motion ◽  
Blood Pool ◽  
Spect Imaging ◽  
Myocardial Wall Motion ◽  
Gated Blood Pool ◽  
Enhanced Sensitivity ◽  
Myocardial Wall ◽  
Regional Myocardial Wall Motion

Noninvasive analysis of regional myocardial wall motion: cardiokymography

1977 ◽  
Vol 233 (6) ◽  
pp. H700-H706 ◽  
Author(s):  
R. Vas ◽  
G. A. Diamond ◽  
H. L. Wyatt ◽  
P. L. da Luz ◽  
H. J. Swan ◽  
...  
Keyword(s):  
Wall Motion ◽  
Amplitude Ratio ◽  
Cardiac Events ◽  
Average Correlation ◽  
Myocardial Wall Motion ◽  
Noninvasive Analysis ◽  
Myocardial Wall ◽  
Acute Coronary Occlusion ◽  
Regional Myocardial Wall Motion ◽  
Isovolumic Relaxation

The validity of a new noninvasive device, the cardiokymograph, was assessed as to its ability to detect regional myocardial wall motion by direct comparison of the analog tracing with that of an epicardial length gauge in 11 open-chest dogs. The correlation of the two methods was excellent both during control conditions and following changes induced by acute coronary occlusion. The average difference between the methods in timing of various cardiac events was only 6.2 +/- 1.9 ms at rest and 6.8 +/- 1.5 ms following ischemia (P = NS). Relative amplitude ratio correlations, determined for the four portions of the cardiac cyele (isovolumic systole, ejection, isovolumic relaxation, and diastole), were also excellent. The average correlation of the kymograph to the length gauge was r = 0.896 +/- 0.018 at rest (K = 0.977 LG + 0.033) and r = 0.932 +/- 0.013 following occlusion (K = 1.071 LG + 0.101). Thus, the cardiokymograph is a sensitive and accurate noninvasive method for detection of regional ischemic dysfunction and produces an analog tracing essentially identical to that of the epicardial length gauge.

Regional myocardial wall motion and thickening assessed by gated MIBI tomography and MRI

1995 ◽  
Vol 16 (4) ◽  
pp. 210 ◽  
Author(s):  
C. Anagnostopoulos ◽  
M. Gunning ◽  
D. Pennell ◽  
R. Laney ◽  
R. Underwood
Keyword(s):  
Wall Motion ◽  
Myocardial Wall Motion ◽  
Myocardial Wall ◽  
Regional Myocardial Wall Motion

Analysis of cardiac kinetics: use of a new photo-optic technique

1980 ◽  
Vol 238 (1) ◽  
pp. H98-H106
Author(s):  
R. Vas ◽  
M. Hirsch ◽  
G. A. Diamond ◽  
D. Tzivoni ◽  
M. Pichler ◽  
...  
Keyword(s):  
Wall Motion ◽  
Frame Analysis ◽  
Myocardial Tissue ◽  
Two Dimensional ◽  
Myocardial Wall Motion ◽  
Myocardial Wall ◽  
Segmental Wall Motion ◽  
Segmental Wall ◽  
Control State ◽  
Tissue Motion

The photokymograph (PKG) is a new noninvasive instrument that can record segmental myocardial wall motion from self-illuminated images such as are produce; by fluoroscopy, cine ventriculography, two-dimensional sonography, and 99mTc scintigraphy. The PKG can be calibrated to provide amplitude of myocardial tissue motion. The recordings of segmental wall motion obtained closely resemble those recorded by established techniques, both during control state and during ischemic episodes. Regression analysis was performed to compare PKG recordings with frame by frame analysis of left ventriculograms (0.98) and with M-mode echo derived from two-dimensional images (r = 0.97). The PKG has some distinct advantages over existing techniques used to analyze segmental wall motion: it is inexpensive, usable simultaneously over multiple areas, analyzes individual beats, and is not restricted to any particular myocardial wall or any particular angle of motion.

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