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Pilgrim C, Winter R, Hensel F, Morkel C, Gläser W. The Dynamic Structure Factor of Expanded Liquid Rubidium. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19910950935] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Winter R, Pilgrim WC. A SANS Study of High Pressure Phase Transitions in Model Biomembranes. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19890930611] [Citation(s) in RCA: 124] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Pristauz G, Petru E, Stacher E, Geigl JB, Schwarzbraun T, Tsybrovvskyy O, Winter R, Moinfar F. Expression von Androgenrezeptoren bei Mammakarzinomen von Patientinnen nach BRCA1- und BRCA2-Mutations-Testung. Geburtshilfe Frauenheilkd 2010. [DOI: 10.1055/s-0030-1254970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Gockeln R, Riegert S, Tutschke I, Winter R. Multifocal topographical evoked potential mapping. J Vis 2010. [DOI: 10.1167/2.7.107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Pristauz G, Petru E, Stacher E, Geigl JB, Schwarzbraun T, Tsybrovskyy O, Winter R, Moinfar F. Expression von Androgenrezeptoren bei Mammakarzinomen von Patientinnen nach BRCA1- und BRCA2-Mutations-Testung. Geburtshilfe Frauenheilkd 2010. [DOI: 10.1055/s-0030-1252090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Gudmundsson P, Shahgaldi K, Winter R, Dencker M, Kitlinski M, Thorsson O, Ljunggren L, Willenheimer R. Parametric quantification of myocardial ischaemia using real-time perfusion adenosine stress echocardiography images, with SPECT as reference method. Clin Physiol Funct Imaging 2010; 30:30-42. [DOI: 10.1111/j.1475-097x.2009.00901.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sahlén A, Norman M, Manouras A, Brodin L, Winter R. P3.05 DERANGED VASCULAR-VENTRICULAR COUPLING IN HEART FAILURE PATIENTS WITH DEPRESSED LEFT VENTRICULAR CONTRACTILITY: IMPORTANCE OF AORTIC CHARACTERISTIC IMPEDANCE. Artery Res 2010. [DOI: 10.1016/j.artres.2010.10.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Petru E, Wildt L, Stummvoll W, Singer C, Speiser P, Fischerlehner G, Reitsamer R, Kubista E, Marth C, Winter R, Menzel C, Leodolter S, Seifert M, Zervomanolakis I, Zeimet A, Reinthaller A. Konsensus der Österreichischen Gesellschaft für Gynäkologie und Geburtshilfe (OEGGG)/Arbeitsgemeinschaft für Gynäkologische Onkologie. Geburtshilfe Frauenheilkd 2009. [DOI: 10.1055/s-0029-1240642] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Sahlén A, Gustafsson TP, Svensson JE, Marklund T, Winter R, Linde C, Braunschweig F. Predisposing factors and consequences of elevated biomarker levels in long-distance runners aged >or=55 years. Am J Cardiol 2009; 104:1434-40. [PMID: 19892064 DOI: 10.1016/j.amjcard.2009.06.067] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2009] [Revised: 06/28/2009] [Accepted: 06/28/2009] [Indexed: 11/26/2022]
Abstract
Cardiac biomarkers play an important role in the diagnosis of cardiovascular disease. Elevated levels can be seen in the context of strenuous exercise. We studied this phenomenon in senior endurance runners. We included 185 participants (61.1 +/- 5 years; 29% women) at a 30-km cross-country race who were self-reportedly in excellent health. Before and after the race, the creatinine, N-terminal pro-brain natriuretic peptide (NT-proBNP), and troponin T were analyzed, and participation in the number of previous races and the race duration were recorded. NT-proBNP increased from 53 ng/L (interquartile range 31 to 89) to 121 ng/L (interquartile range 79 to 184) and troponin T from undetectable to 0.01 microg/L (interquartile range 0.01 to 0.04). The independent predictors of a large NT-proBNP increase were (1) greater levels present at baseline, (2) a greater increase in creatinine (both p <0.001), (3) older age (p = 0.01), and (4) a longer race duration (p <0.05). Troponin T elevation was independently predicted by (1) older age (p = 0.01), (2) a greater increase in creatinine, and (3) participation in fewer previous races (both p <0.05). Of the 15 runners with an elevated (>194 ng/L) baseline NT-proBNP level (8.1% of 185), 4 were found to have serious cardiovascular disease (2.2% of whole sample). Of these 4 patients, 1 died from sudden cardiac death within months after the race. In conclusion, biomarker elevation occurs commonly in senior runners. A high baseline NT-proBNP is predictive of a large release during exercise, suggesting that the factors that control the at rest levels also determine its release with exertion. Troponin T elevation was seen in less-experienced participants. A small group of very ill runners were identified by NT-proBNP analysis.
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Pristauz G, Bader AA, Regitnig P, Haas J, Winter R, Tamussino K. Treffsicherheit der intraoperativen Gefrierschnittuntersuchung pelviner Lymphknoten von Patientinnen mit Endometriumkarzinom. Geburtshilfe Frauenheilkd 2009. [DOI: 10.1055/s-0029-1239000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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112
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Petru E, Sampl E, Haas J, Benedicic C, Winter R. 8024 Comparison of tumour size and metastases in stage I and III primary epithelial ovarian cancer. EJC Suppl 2009. [DOI: 10.1016/s1359-6349(09)71546-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Shahgaldi K, Gudmundsson P, Manouras A, Brodin LA, Winter R. Visually estimated ejection fraction by two dimensional and triplane echocardiography is closely correlated with quantitative ejection fraction by real-time three dimensional echocardiography. Cardiovasc Ultrasound 2009; 7:41. [PMID: 19706183 PMCID: PMC2747837 DOI: 10.1186/1476-7120-7-41] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2009] [Accepted: 08/25/2009] [Indexed: 02/18/2023] Open
Abstract
Background Visual assessment of left ventricular ejection fraction (LVEF) is often used in clinical routine despite general recommendations to use quantitative biplane Simpsons (BPS) measurements. Even thou quantitative methods are well validated and from many reasons preferable, the feasibility of visual assessment (eyeballing) is superior. There is to date only sparse data comparing visual EF assessment in comparison to quantitative methods available. The aim of this study was to compare visual EF assessment by two-dimensional echocardiography (2DE) and triplane echocardiography (TPE) using quantitative real-time three-dimensional echocardiography (RT3DE) as the reference method. Methods Thirty patients were enrolled in the study. Eyeballing EF was assessed using apical 4-and 2 chamber views and TP mode by two experienced readers blinded to all clinical data. The measurements were compared to quantitative RT3DE. Results There were an excellent correlation between eyeballing EF by 2D and TP vs 3DE (r = 0.91 and 0.95 respectively) without any significant bias (-0.5 ± 3.7% and -0.2 ± 2.9% respectively). Intraobserver variability was 3.8% for eyeballing 2DE, 3.2% for eyeballing TP and 2.3% for quantitative 3D-EF. Interobserver variability was 7.5% for eyeballing 2D and 8.4% for eyeballing TP. Conclusion Visual estimation of LVEF both using 2D and TP by an experienced reader correlates well with quantitative EF determined by RT3DE. There is an apparent trend towards a smaller variability using TP in comparison to 2D, this was however not statistically significant.
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Holz S, Künnecke W, Peters W, Hitzmann B, Scheper T, Winter R. Online-Analyse von Proteinen mittels Ultraschall. CHEM-ING-TECH 2009. [DOI: 10.1002/cite.200950074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Manouras A, Shala A, Nyktari E, Shahgaldi K, Winter R, Vardas P, Brodin LA, Nowak J. Are measurements of systolic myocardial velocities and displacement with colour and spectral Tissue Doppler compatible? Cardiovasc Ultrasound 2009; 7:29. [PMID: 19545452 PMCID: PMC2715374 DOI: 10.1186/1476-7120-7-29] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2009] [Accepted: 06/23/2009] [Indexed: 11/10/2022] Open
Abstract
Background Tissue Doppler (TD) in pulsed mode (spectral TD) and colour TD are the two modalities today available in tissue velocity echocardiography (TVE). Previous studies have shown poor agreement between these two methods when measuring myocardial velocities and displacement. In this study, the concordance between the myocardial velocity and displacement measurements using colour TD and different spectral TD procedures was evaluated. Methods Left ventricular (LV) longitudinal systolic myocardial velocities and displacement during ejection period were quantified at the basal septal and lateral wall in 24 healthy individuals (4 women and 20 men, 34 ± 12 years) using spectral TD, colour TD and M-mode recordings. Mean, maximal and minimal spectral TD systolic velocities and the corresponding displacement values were obtained by measurements at the outer and inner borders of the spectral velocity signal. The results were then compared with those obtained with the two other modalities used. Results Systolic myocardial velocities derived from mean spectral TD frequencies were highly concordant with corresponding colour TD measurements (mean difference 0.10 ± 0.54 cm/sec in septal and 0.09 ± 0.97 cm/sec in lateral wall). Similarly, the agreement between spectral and colour TD (mean difference 0.22 ± 0.74 mm in septal and 0.02 ± 0.86 mm in lateral wall) as well as M-mode was good when mean spectral velocities were temporally integrated and the results did not differ statistically. Conversely, displacement values from the inner or outer border of the spectral signal differed significantly from values obtained with colour TD and M-mode (p < 0.001, in both cases). Conclusion LV systolic myocardial measurements based on mean spectral TD frequencies are highly concordant with those provided by colour TD and M-mode. Hence, in order to maintain compatibility of the results, the use of this particular spectral TD procedure should be advocated in clinical praxis.
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Gudmundsson P, Shahgaldi K, Winter R, Dencker M, Kitlinski M, Thorsson O, Willenheimer RB, Ljunggren L. Quantitative detection of myocardial ischaemia by stress echocardiography; a comparison with SPECT. Cardiovasc Ultrasound 2009; 7:28. [PMID: 19534829 PMCID: PMC2709606 DOI: 10.1186/1476-7120-7-28] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2009] [Accepted: 06/18/2009] [Indexed: 11/12/2022] Open
Abstract
Aims Real-time perfusion (RTP) adenosine stress echocardiography (ASE) can be used to visually evaluate myocardial ischaemia. The RTP power modulation technique angio-mode (AM), provides images for off-line perfusion quantification using Qontrast® software, generating values of peak signal intensity (A), myocardial blood flow velocity (β) and myocardial blood flow (Axβ). By comparing rest and stress values, their respective reserve values (A-r, β-r, Axβ-r) are generated. We evaluated myocardial ischaemia by RTP-ASE Qontrast® quantification, compared to visual perfusion evaluation with 99mTc-tetrofosmin single-photon emission computed tomography (SPECT). Methods and Results Patients admitted to SPECT underwent RTP-ASE (SONOS 5500) using AM during Sonovue® infusion, before and throughout adenosine stress, also used for SPECT. Visual myocardial perfusion and wall motion analysis, and Qontrast® quantification, were blindly compared to one another and to SPECT, at different time points off-line. We analyzed 201 coronary territories (left anterior descendent [LAD], left circumflex [LCx] and right coronary [RCA] artery territories) in 67 patients. SPECT showed ischaemia in 18 patients and 19 territories. Receiver operator characteristics and kappa values showed significant agreement with SPECT only for β-r and Axβ-r in all segments: area under the curve 0.678 and 0.665; P < 0.001 and < 0.01, respectively. The closest agreements were seen in the LAD territory: kappa 0.442 for both β-r and Axβ-r; P < 0.01. Visual evaluation of ischaemia showed good agreement with SPECT: accuracy 93%; kappa 0.67; P < 0.001; without non-interpretable territories. Conclusion In this agreement study with SPECT, RTP-ASE Qontrast® quantification of myocardial ischaemia was less accurate and less feasible than visual evaluation and needs further development to be clinically useful.
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Larsson M, Bjällmark A, Johnson J, Winter R, Brodin LA, Lundbäck S. State diagrams of the heart--a new approach to describing cardiac mechanics. Cardiovasc Ultrasound 2009; 7:22. [PMID: 19473478 PMCID: PMC2693107 DOI: 10.1186/1476-7120-7-22] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2009] [Accepted: 05/27/2009] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Cardiac time intervals have been described as a measure of cardiac performance, where prolongation, shortening and delay of the different time intervals have been evaluated as markers of cardiac dysfunction. A relatively recently developed method with improved ability to measure cardiac events is Tissue Doppler Imaging (TDI), allowing accurate measurement of myocardial movements. METHODS We propose the state diagram of the heart as a new visualization tool for cardiac time intervals, presenting comparative, normalized data of systolic and diastolic performance, providing a more complete overview of cardiac function. This study aimed to test the feasibility of the state diagram method by presenting examples demonstrating its potential use in the clinical setting and by performing a clinical study, which included a comparison of the state diagram method with established echocardiography methods (E/E' ratio, LVEF and WMSI). The population in the clinical study consisted of seven patients with non ST-elevation myocardial infarction (NSTEMI) and seven control subjects, individually matched according to age and gender. The state diagram of the heart was generated from TDI curves from seven positions in the myocardium, visualizing the inter- and intraventricular function of the heart by displaying the cardiac phases. RESULTS The clinical examples demonstrated that the state diagram allows for an intuitive visualization of pathological patterns as ischemia and dyssynchrony. Further, significant differences in percentage duration between the control group and the NSTEMI group were found in eight of the totally twenty phases (10 phases for each ventricle), e.g. in the transition phases (Pre-Ejection and Post-Ejection). These phases were significantly longer (> 2.18%) for the NSTEMI group than for the control group (p < 0.05). No significant differences between the groups were found for the established echocardiography methods. CONCLUSION The test results clearly indicate that the state diagram has potential to be an efficient tool for visualization of cardiac dysfunction and for detection of NSTEMI.
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Schneuber S, Reich O, Pickel K, Winter R. HPV L1-Nachweis und Wahrscheinlichkeit der Regression bei Patientinnen mit leichten und mittelschweren Dysplasien der Portio. Geburtshilfe Frauenheilkd 2009. [DOI: 10.1055/s-0029-1225244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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119
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Pickel K, Reich O, Winter R. 10 Jahre Latenz zwischen CIN III und klinischen Zervixkarzinom- ein Fallbericht. Geburtshilfe Frauenheilkd 2009. [DOI: 10.1055/s-0029-1225188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Bjällmark A, Larsson M, Shahgaldi K, Lind B, Winter R, Brodin LÅ. Differences in myocardial velocities during supine and upright exercise stress echocardiography in healthy adults. Clin Physiol Funct Imaging 2009; 29:216-23. [DOI: 10.1111/j.1475-097x.2009.00860.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bader AA, Pristauz G, Tamussino K, Regitnig P, Haas J, Winter R. Treffsicherheit der intraoperativen Gefrierschnittuntersuchung pelviner Lymphknoten bei Patientinnen mit Endometriumkarzinom. Geburtshilfe Frauenheilkd 2009. [DOI: 10.1055/s-0029-1225168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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122
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Ulrich D, Tamussino K, Fruhmann A, Müller G, Amon B, Schoenett B, Bjelic-Radisic V, Bader A, Winter R. Fast-track Hysterektomie: Ein Pilot Projekt. Geburtshilfe Frauenheilkd 2009. [DOI: 10.1055/s-0029-1225247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Gudmundsson P, Shahgaldi K, Winter R, Dencker M, Kitlinski M, Thorsson O, Ljunggren L, Willenheimer RB. Head to head comparisons of two modalities of perfusion adenosine stress echocardiography with simultaneous SPECT. Cardiovasc Ultrasound 2009; 7:19. [PMID: 19379491 PMCID: PMC2678085 DOI: 10.1186/1476-7120-7-19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2009] [Accepted: 04/20/2009] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Real-time perfusion (RTP) contrast echocardiography can be used during adenosine stress echocardiography (ASE) to evaluate myocardial ischemia. We compared two different types of RTP power modulation techniques, angiomode (AM) and high-resolution grayscale (HR), with 99mTc-tetrofosmin single-photon emission computed tomography (SPECT) for the detection of myocardial ischemia. METHODS Patients with known or suspected coronary artery disease (CAD), admitted to SPECT, were prospectively invited to participate. Patients underwent RTP imaging (SONOS 5500) using AM and HR during Sonovue(R) infusion, before and throughout the adenosine stress, also used for SPECT. Analysis of myocardial perfusion and wall motion by RTP-ASE were done for AM and HR at different time points, blinded to one another and to SPECT. Each segment was attributed to one of the three main coronary vessel areas of interest. RESULTS In 50 patients, 150 coronary areas were analyzed by SPECT and RTP-ASE AM and HR. SPECT showed evidence of ischemia in 13 out of 50 patients. There was no significant difference between AM and HR in detecting ischemia (p = 0.08). The agreement for AM and HR, compared to SPECT, was 93% and 96%, with Kappa values of 0.67 and 0.75, respectively (p < 0.001). CONCLUSION There was no significant difference between AM and HR in correctly detecting myocardial ischemia as judged by SPECT. This suggests that different types of RTP modalities give comparable data during RTP-ASE in patients with known or suspected CAD.
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Manouras A, Shahgaldi K, Winter R, Brodin LA, Nowak J. Measurements of left ventricular myocardial longitudinal systolic displacement using spectral and colour tissue Doppler: time for a reassessment? Cardiovasc Ultrasound 2009; 7:12. [PMID: 19292894 PMCID: PMC2661320 DOI: 10.1186/1476-7120-7-12] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2009] [Accepted: 03/17/2009] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Echocardiographic measurements of left ventricular (LV) myocardial displacement may produce different results depending on the choice of employed modality and subjective adjustments during data acquisition and analysis. METHODS In this study, left ventricular longitudinal systolic displacement was quantified in 57 patients (31 women and 26 men, 50 +/- 16 years) using colour (colour TD) and spectral tissue Doppler (spectral TD) before and after temporal filtering (30 to 70 milliseconds in 20-millisecond steps) and changed offline gain saturation (0%, 50% and 100%), respectively. The results were compared with those obtained with anatomic M-mode. RESULTS Whereas only minor differences occurred between the results of colour TD and anatomic M-mode measurements, spectral TD significantly overestimated the results obtained with both these methods. However, the limits of agreement between the results produced by all three studied methods were not clinically acceptable in any of the cases. The spectral TD displacement values increased along with increasing offline gain saturation whereas the effect of temporal filtering on colour Doppler measurements was insignificant. CONCLUSION Measurements of LV myocardial longitudinal displacement employing spectral TD, colour TD or anatomic M-mode produce different results, thus discouraging interchangeable use of these modalities. Whereas the results of spectral TD measurements can be significantly altered by changing offline gain setting, the effect of temporal filtering on colour TD measurements is insignificant, a fact that increases clinical practicality of the latter method.
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Pristauz G, Bader AA, Regitnig P, Haas J, Winter R, Tamussino K. Treffsicherheit der intraoperativen Gefrierschnittuntersuchung pelviner Lymphknoten von Patientinnen mit Endometriumkarzinom. Geburtshilfe Frauenheilkd 2009. [DOI: 10.1055/s-0029-1220283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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