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Automated Detection of Regional Wall Motion Abnormalities Based on a Statistical Model Applied to Multislice Short-Axis Cardiac MR Images
2009
IEEE Transactions on Medical Imaging
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For each slice level (base, middle, and apex), 44 short-axis magnetic resonance images were selected from healthy volunteers to train a statistical model of normal myocardial contraction using independent ...
In this paper, a statistical shape analysis method for myocardial contraction is presented that was built to detect and locate regional wall motion abnormalities (RWMA). ...
CONCLUSION AND FUTURE WORK A statistical model-based method to automatically detect RWMA in cardiac MR short-axis views of the myocardium has been presented. ...
doi:10.1109/tmi.2008.2008966
pmid:19211347
fatcat:qr6o62lea5g6fglcmwzgqpbtgu
Noninvasive Evaluation of the Coronary Arteries With Multislice Computed Tomography in Hypertensive Patients
2004
Hypertension
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From the MSCT images, the presence of significant coronary stenoses (Ն50% luminal narrowing) and regional wall motion abnormalities were evaluated and compared with invasive coronary angiography and 2- ...
Mean left ventricular ejection fraction was 46Ϯ14% (range, 16% to 64%). The agreement for assessing regional wall motion was 91% (kappa statistic, 0.81). ...
An experienced observer blinded to all other data evaluated the presence of regional wall motion abnormalities visually on the short-axis slices (displayed in cine-loop format) using a previously described ...
doi:10.1161/01.hyp.0000152201.79955.e4
pmid:15596569
fatcat:3442akcrnjahfcqj7uqu4wontm
Tagged magnetic resonance imaging of the heart: a survey
2005
Medical Image Analysis
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Magnetic resonance imaging (MRI) of the heart with magnetization tagging provides a potentially useful new way to assess cardiac mechanical function, through revealing the local motion of otherwise indistinguishable ...
In this paper, we review some of the progress that has been made in developing such methods for tagged cardiac MRI, as well as some of the ways these methods have been applied to the study of cardiac function ...
Acknowledgements Dimitris Metaxas and a series of several students and programmers have contributed significantly to the development of tagged MRI methods in our laboratory. ...
doi:10.1016/j.media.2005.01.003
pmid:15878302
fatcat:ww4tuowfjzcmhodamjv6xfhlo4
Computational cardiac atlases: from patient to population and back
2009
Experimental Physiology
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These methods facilitate statistical analysis of regional heart shape and wall motion characteristics across population groups, via the application of parametric mathematical modelling tools. ...
Efficient and robust statistical representations of cardiac morphology and morphodynamics can thereby be obtained, enabling quantitative analysis of images based on such representations. ...
White arrows in the end-systole images show corresponding regional areas of wall motion abnormality with the automated detection. ...
doi:10.1113/expphysiol.2008.044081
pmid:19098087
fatcat:sbyvhkhw2nhund75u6vofrdwxa
Automated border detection in three-dimensional echocardiography: principles and promises
2010
European Journal of Echocardiography
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Several automated border detection approaches for three-dimensional echocardiography have been developed in recent years, allowing quantification of a range of clinically important parameters. ...
In this review, the background and principles of these approaches and the different classes of methods are described from a practical perspective, as well as the research trends to achieve a robust method ...
If applied to cardiac images, statistical models of the cardiac motion may be used as a constraint instead. 45 Since optical flow allows a seamless integration of scaling and shearing, the method can ...
doi:10.1093/ejechocard/jeq005
pmid:20139440
fatcat:ox6xabvd2net3grpai4xdgu2pq
Left ventricular function and perfusion from gated SPECT perfusion images: an integrated method
1999
Journal of Nuclear Medicine
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This method is a logical extension of the results of a standard perfusion quantification technique; thus, it allows integration of perfusion and functional information. ...
A new technique for computing left ventricular function, including left ventricular volumes, mass and ejection fraction, has been developed. ...
On short-axis MR slices, myocardial thickness ranged from 10.2 ±.5 mm at the chordal level of the posterior wall to 10.4 ±1.8 mm at the papillary muscle level of the septal wall. Also, Byrd et al. ...
pmid:10210225
fatcat:4rdgvy47cnac7psf47l7wjs7p4
Assessment of Cardiac Performance with Magnetic Resonance Imaging
2006
Current Cardiology Reviews
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LV model with short and long axis MR scans. ...
Analysis of left ventricular wall motion coronary blood flow and myocardial mechanics, SIAM J Applied
based on volumetric deformable models and MRI-SPAMM. ...
doi:10.2174/157340306778772904
fatcat:ii25vkgrbzb2tfrij2drj6f5eq
Phase-sensitive black-blood coronary vessel wall imaging
2010
Magnetic Resonance in Medicine
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The cardiomyopathy is reversible if chelation is commenced early but diagnosis is often delayed due to the late onset of symptoms. ...
T2* CMR can now assess cardiac iron O3 Sub-clinical systolic dysfunction with persistent myocardial edema and inflammation in elite high-endurance athletes with common colds: a cardiovascular magnetic ...
Conclusion: We have demonstrated a rapid method of T2-mapping for quantitative detection of myocardial edema. ...
doi:10.1002/mrm.22286
pmid:20373403
fatcat:4wuqi3pyczdy3gfw6svjdruzme
Improved image quality in subtraction based non-contrast MRA using automated soft tissue motion correction with BRACE
2009
Journal of Cardiovascular Magnetic Resonance
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Contrast enhanced cardiovascular magnetic resonance imaging (ceCMR) can detect and quantify myocardial fibrosis in the setting of CMI and might therefore be a valuable tool for a more accurate risk stratification ...
LV mass (sequence parameters: GRE SSFP, matrix 256 × 192, short axis stack; full LV coverage, no gap; slice thickness 6 mm). ...
Conclusion: We presented a robust, accurate and efficient method for the fully automatic delineation of the myocardium contours in LA + SA cine CMR images, which can be used for accurate LV functional ...
doi:10.1186/1532-429x-11-s1-p84
fatcat:udhprrwa4van7kn64eq2z3o4qq
Regional wall motion abnormalities at rest and stress in patients with end-stage renal disease diagnosed by cardiac magnetic resonance imaging
2009
Journal of Cardiovascular Magnetic Resonance
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Contrast enhanced cardiovascular magnetic resonance imaging (ceCMR) can detect and quantify myocardial fibrosis in the setting of CMI and might therefore be a valuable tool for a more accurate risk stratification ...
LV mass (sequence parameters: GRE SSFP, matrix 256 × 192, short axis stack; full LV coverage, no gap; slice thickness 6 mm). ...
Conclusion: We presented a robust, accurate and efficient method for the fully automatic delineation of the myocardium contours in LA + SA cine CMR images, which can be used for accurate LV functional ...
doi:10.1186/1532-429x-11-s1-p267
fatcat:6ylmd7qllza5ximrxmdf2yxy5i
Diffusion-prepared dark blood delayed enhancement imaging for improved detection of subendocardial infarcts
2009
Journal of Cardiovascular Magnetic Resonance
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The cardiomyopathy is reversible if chelation is commenced early but diagnosis is often delayed due to the late onset of symptoms. ...
T2* CMR can now assess cardiac iron O3 Sub-clinical systolic dysfunction with persistent myocardial edema and inflammation in elite high-endurance athletes with common colds: a cardiovascular magnetic ...
Conclusion: We have demonstrated a rapid method of T2-mapping for quantitative detection of myocardial edema. ...
doi:10.1186/1532-429x-11-s1-o10
fatcat:e53avy5acvg37fn2i3wdp6usya
Sudden cardiac death with normal coronaries: cardiac MRI in the differential diagnosis of underlying disease in survivors
2009
Journal of Cardiovascular Magnetic Resonance
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The cardiomyopathy is reversible if chelation is commenced early but diagnosis is often delayed due to the late onset of symptoms. ...
T2* CMR can now assess cardiac iron O3 Sub-clinical systolic dysfunction with persistent myocardial edema and inflammation in elite high-endurance athletes with common colds: a cardiovascular magnetic ...
Conclusion: We have demonstrated a rapid method of T2-mapping for quantitative detection of myocardial edema. ...
doi:10.1186/1532-429x-11-s1-o14
fatcat:n3ole6buxnfuxd3335hp4wjqfq
Rapid automated quantification of left ventricular ejection fraction with LV-METRIC – a novel segmentation algorithm
2009
Journal of Cardiovascular Magnetic Resonance
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Contrast enhanced cardiovascular magnetic resonance imaging (ceCMR) can detect and quantify myocardial fibrosis in the setting of CMI and might therefore be a valuable tool for a more accurate risk stratification ...
LV mass (sequence parameters: GRE SSFP, matrix 256 × 192, short axis stack; full LV coverage, no gap; slice thickness 6 mm). ...
Conclusion: We presented a robust, accurate and efficient method for the fully automatic delineation of the myocardium contours in LA + SA cine CMR images, which can be used for accurate LV functional ...
doi:10.1186/1532-429x-11-s1-p117
fatcat:wh7bzjs4orfp3mrx4grhr7xqea
Comparison between single shot ir-steady state free precession and conventional ir-fast gradient echo sequence for automated quantification of the scar size in acute myocardial infarction in daily practice
2009
Journal of Cardiovascular Magnetic Resonance
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A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
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Contrast enhanced cardiovascular magnetic resonance imaging (ceCMR) can detect and quantify myocardial fibrosis in the setting of CMI and might therefore be a valuable tool for a more accurate risk stratification ...
LV mass (sequence parameters: GRE SSFP, matrix 256 × 192, short axis stack; full LV coverage, no gap; slice thickness 6 mm). ...
Conclusion: We presented a robust, accurate and efficient method for the fully automatic delineation of the myocardium contours in LA + SA cine CMR images, which can be used for accurate LV functional ...
doi:10.1186/1532-429x-11-s1-p111
fatcat:hkcdkitw2vbujdo7427pqlry6i
Chemotherapy induced abnormal aortic function assessed by magnetic resonance imaging
2009
Journal of Cardiovascular Magnetic Resonance
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A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
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Contrast enhanced cardiovascular magnetic resonance imaging (ceCMR) can detect and quantify myocardial fibrosis in the setting of CMI and might therefore be a valuable tool for a more accurate risk stratification ...
LV mass (sequence parameters: GRE SSFP, matrix 256 × 192, short axis stack; full LV coverage, no gap; slice thickness 6 mm). ...
Conclusion: We presented a robust, accurate and efficient method for the fully automatic delineation of the myocardium contours in LA + SA cine CMR images, which can be used for accurate LV functional ...
doi:10.1186/1532-429x-11-s1-o55
fatcat:jn3jdew7dfaulnb63njmv6sq7u
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