2004
DOI: 10.1016/s0735-1097(04)91576-8
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866-3 Assessment of left ventricular torsional deformation by doppler tissue imaging: A validation study using tagged magnetic resonance imaging

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Cited by 56 publications
(107 citation statements)
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“…The average LV rotation and rotational velocity profi le from six segments is used for the calculation of LV twist and twist velocity. LV twist and twist velocity is defi ned as apical rotation and rotational velocity relative to the base of the heart [7,14,16].…”
Section: How To Measure LV Twistmentioning
confidence: 99%
“…The average LV rotation and rotational velocity profi le from six segments is used for the calculation of LV twist and twist velocity. LV twist and twist velocity is defi ned as apical rotation and rotational velocity relative to the base of the heart [7,14,16].…”
Section: How To Measure LV Twistmentioning
confidence: 99%
“…As in previous studies [2][3][4][5][6]: (1) LV torsion was defined as the net difference of LV rotation at the basal and apical planes (Fig. 2); (2) to adjust for intersubject differences in heart rate, the time sequence was normalized.…”
Section: The 2d Strain Processingmentioning
confidence: 99%
“…The validation tests were based on available experimental/clinical cardiovascular data gathered from a total of 12 normal volunteers at the Cleveland Clinic Foundation as published by Notomi et al 17 The protocol was approved by the institutional review board and written, informed consent was obtained before the study from all patients. The average age and weight of the group was 36 ± 8 years and 72 ± 10 kg, respectively.…”
Section: Numerical Experiments 3: Validation Against In Vivo Clinical mentioning
confidence: 99%
“…Echocardiographic images were analyzed for standard indices of systolic and diastolic function. Additional details about experimental protocols and/ or data analysis can be found in the works of Notomi et al 17 Non-invasive and direct measurement of ventricular pressure is not possible, therefore a total of six 25-30 kg mongrel dogs were used to obtain mean values of invasive pressure measurements to supplement noninvasive data obtained in the human experimental model. Detailed information about the treatment of the animals and experimental protocols can be found in the work of Notomi et al 16 The study was approved by the Institutional Animal Research committee and is in compliance with the ''Guide for the Care and Use of Laboratory Animals published by the National Institutes of Health.''…”
Section: Numerical Experiments 3: Validation Against In Vivo Clinical mentioning
confidence: 99%
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