A Comparison between QLAB and TomTec Full Volume Reconstruction for Real Time Three‐Dimensional Echocardiographic Quantification of Left Ventricular Volumes

Soliman, Osama Ibrahim Ibrahim; Krenning, Boudewijn J.; Geleijnse, Marcel L.; Nemes, Attila; Geuns, Robert‐Jan van; Baks, Timo; Anwar, Ashraf M.; Galema, Tjebbe W.; Vletter, Wim B.; Cate, Folkert J. Ten

doi:10.1111/j.1540-8175.2007.00502.x

Cited by 89 publications

(97 citation statements)

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“…Már szá-mos vizsgálat igazolta az RT3DE szerepét a BK-i térfogatok pontos mérésében kontrasztanyag használata mellett és a nélkül [31], függetlenül a vizsgálatok során alkalmazott szoftvertől [32,33]. Irodalmi adatok alapján az RT3DE az MRI-hez mérhető nagy pontosságot és reprodukálható-ságot mutat a BK-i térfogatok mérése során [32,33].…”

Section: A Bal Kamrai Méretek éS Térfogatok Méréseunclassified

“…Mivel a BK-i modell segítségével a globális és szegmentális BK-i végszisztolés és végdiasztolés térfogatértékek nagy pontossággal meghatározhatók, így globális és az egyes szegmentumokra vonatkoztatott EF is számítható [31,32,33]. Echokardiográfi ás kontrasztanyag alkalmazása mellett az RT3DE pontosabbnak bizonyult a BKfunkció meghatározásában, amelyet az MRI-hez mérhe-tő szorosabb korreláció és egyetértés, valamint az alacsonyabb intra-és interobserver variabilitás jellemzett [31].…”

Section: Ejekciós Frakció (Ef) Méréseunclassified

“…Echokardiográfi ás kontrasztanyag alkalmazása mellett az RT3DE pontosabbnak bizonyult a BKfunkció meghatározásában, amelyet az MRI-hez mérhe-tő szorosabb korreláció és egyetértés, valamint az alacsonyabb intra-és interobserver variabilitás jellemzett [31]. Mindemellett tény, hogy a szoftverek és azok generációinak különbözősége miatt a térfogatértékek külön-bözhetnek, így a számított BK-EF értékek is eltéréseket mutathatnak [32,33].…”

Section: Ejekciós Frakció (Ef) Méréseunclassified

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A bal kamra korszerű echokardiográfiás vizsgálata – az M-módtól a 3D speckle-tracking képalkotásig

Nemes

Forster

2015

Orvosi Hetilap

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A bal kamrának alapvető szerepe van a szervezet vérkeringésének fenntartásában, ezért annak noninvazív vizsgálata esszenciális fontosságú. A jelen összefoglaló közlemény célja a jelenleg elérhető, a bal kamra vizsgálatában használatos echokardiográfi ás módszerek klinikai jelentőségének bemutatása, kiemelve a legkorszerűbbnek tartott háromdimen-ziós (és) speckle-tracking eljárások fontosságát. Orv. Hetil., 2015, 156(43), 1723-1740.Kulcsszavak: bal kamra, funkció, echokardiográfi a Recent echocardiographic examination of the left ventricle -from M-mode to 3D speckle-tracking imagingThe left ventricle has a vital role in maintaining circulation of the body, therefore, its non-invasive assessment is essential. The aim of the present review is to demonstrate clinical relevance of different echocardiographic methods in the evaluation of left ventricle emphasizing the importance of the most recent three-dimensional (and) speckletracking methodologies. ÖSSZEFOGLALÓ KÖZLEMÉNYRövidítések 2D = kétdimenziós; 2DE = kétdimenziós echokardiográfi a; 2DSTE = kétdimenziós speckle-tracking echokardiográfi a; 3D = háromdimenziós; 3DS = háromdimenziós strain; 3DSTE = háromdimenziós speckle-tracking echokardiográfi a; A = a mitralis beáramlás második hulláma diasztoléban; A' = a pitvari kontrakció sebességértéke (TDI-vel mérve); AA = bal kamrai apicalis anterior szegmentum; AAL = bal kamrai apicalis anterolateralis szegmentum; AAS = bal kamrai apicalis anteroseptalis szegmentum; ACT = (acceleration time) akcelerációs idő; AI = bal kamrai apicalis inferior szegmentum; AIL = bal kamrai apicalis inferolateralis szegmentum; AIS = bal kamrai apicalis inferoseptalis szegmentum; Am = a pitvari kontrakció sebességértéke (TDI-vel mérve); Ap = apex; AP2CH = (apical 2-chamber view) csúcsi 2 üregi nézet; AP3CH = (apical 3-chamber view) csúcsi 3 üregi nézet; AP4CH = (apical 4-chamber view) csúcsi 4 üregi nézet; AS = area strain; ASDI = (area strain dyssynchrony index) 3DSTE-vel mérhető diszszinkróniaparaméter; BA = bal kamrai basalis anterior szegmentum; BAL = bal kamrai basalis anterolateralis szegmentum; BAS = bal kamrai basalis anteroseptalis szegmentum; BI = bal kamrai basalis inferior szegmentum; BIL = bal kamrai basalis inferolateralis szegmentum; BIS = bal kamrai basalis inferoseptalis szegmentum; BK = bal kamra; CRT = (cardiac resynchronization therapy) kardiális reszinkronizációs kezelés; CS = circumferentialis strain; D = (diameter) átmérő; DE = Doppler-echokardiográfi a; DLC = (delayed longitudinal contraction) TDI-vel mérhető diszszinkróniaparaméter; dP = nyomáskülönbség; dt = időkülönbség; DT = (deceleration time) a mitralis E-hullám-deceleratio ideje Dopplerrel mérve;

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Section: A Bal Kamrai Méretek éS Térfogatok Méréseunclassified

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A bal kamra korszerű echokardiográfiás vizsgálata – az M-módtól a 3D speckle-tracking képalkotásig

Nemes

Forster

2015

Orvosi Hetilap

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“…In addition, it is unclear whether the accuracy of 3D-transoesophageal echocardiography is similar in patients with a dilated or aneurysmal left ventricle. Several studies [21][22][23][24][25] have investigated the validation of 3D-transthoracic echocardiography in patients with cardiomyopathy. They show good agreement for measuring stroke volume.…”

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The utility of intra-operative three-dimensional transoesophageal echocardiography for dynamic measurement of stroke volume

et al. 2014

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SummaryMeasurement of left ventricular stroke volume and cardiac output is very important for managing haemodynamically unstable or critically ill patients. The aims of this study were to compare stroke volume measured by three-dimensional transoesophageal echocardiography with stroke volume measured using a pulmonary artery catheter, and to examine the ability of three-dimensional transoesophageal echocardiography to track stroke volume changes induced by haemodynamic interventions. This study included 40 cardiac surgery patients. Haemodynamic variables were measured before and 2 min after haemodynamic interventions, which consisted of phenylephrine 100 lg or ephedrine 5 mg. We used Bland-Altman analysis to assess the agreement between the stroke volume measured by threedimensional transoesophageal echocardiography and by the pulmonary artery catheter. Polar-plot and 4-quadrant plot analyses were used to assess the trending ability of three-dimensional transoesophageal echocardiography compared with the pulmonary artery catheter. Bias and percentage error were À1.2 ml and 20%, respectively. The concordance rate in the 4-quadrant analysis after phenylephrine and ephedrine administration was 75% and 84%, respectively. In the polar-plot analysis, the angular concordance rate was 66% and 73% after phenylephrine and ephedrine administration, respectively. Three-dimensional transoesophageal echocardiography was clinically acceptable for measuring stroke volume; however, it was not sufficiently reliable for tracking stroke volume changes after haemodynamic interventions.

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“…Relevant underestimation of 3D volumes has been reported in other automatic software tools, and parallel comparisons showed that the results obtained by different automatic tools did not differ significantly. 3,4,[18][19][20] However, automatic tools for quantitative analysis of 3D data sets are highly desirable because manual analysis of 3D data is extremely timeconsuming and impractical.…”

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confidence: 99%

Variables Influencing the Accuracy of 2‐Dimensional and Real‐time 3‐Dimensional Echocardiography for Assessment of Small Volumes, Areas, and Distances

Herberg

Brand

Bernhardt

et al. 2011

J of Ultrasound Medicine

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Objectives The aim of this study was to assess the validity, accuracy, and reproducibility of real‐time 3‐dimensional (3D) echocardiography for small distances, areas, and volumes. Methods Real‐time 3D echocardiography using matrix technology was performed in small calibrated tissue‐mimicking phantoms and compared with 2‐dimensional (2D) echocardiography. In a systematic variation of variables on data acquisition and analysis including different 3D workstations (manual disk summation versus semiautomatic border detection), the relative contributions of sources of errors were determined. The clinical relevance of the in vitro findings was assessed in 5 neonates and infants. Results Distance calculation was valid (mean relative error ± SD, −0.15% ± 1.2%). Underestimation of areas and volumes was significant for both 2D and 3D echocardiography (area: 2D, −7.0% ± 2.9%; 3D, −6.0% ± 2.8%; volume: 2D, −13.1% ± 4.5%; 3D, −6.7% ± 2.5%; P < .05). Adjustment of compression and gain on data acquisition (difference of the means: 2D, 11.6%; 3D, 17.9%), gain on postprocessing (3D, 3.4%), and the border detection algorithm on analysis (2D, 4.8%; 3D, 16.6%) had a highly significant effect on volume and area calculations (P < .001). In vivo, compression and gain on acquisition (3D, 19.1%) and the 3D workstation on analysis (3D, 22.2%) had a highly significant impact on left ventricular volumetry (P < .001). Conclusions Real‐time 3D echocardiography is a reliable method for calculation of small distances, areas, and volumes comparable with the size of the neonatal and infant heart. Variables influencing boundary identification during image acquisition and analysis have a significant impact on 2D and 3D area and volume calculations. Standardized protocols are mandatory to avoid these sources of error in both clinical practice and research.

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A Comparison between QLAB and TomTec Full Volume Reconstruction for Real Time Three‐Dimensional Echocardiographic Quantification of Left Ventricular Volumes

Abstract: RT3DE with TomTec or QLAB software analysis provides accurate LV-EF assessment in cardiomyopathic patients with distorted LV geometry and adequate 2D image quality. However, LV volumes may be somewhat more underestimated with the current QLAB software version.

Cited by 89 publications

References 20 publications

A bal kamra korszerű echokardiográfiás vizsgálata – az M-módtól a 3D speckle-tracking képalkotásig

A bal kamra korszerű echokardiográfiás vizsgálata – az M-módtól a 3D speckle-tracking képalkotásig

The utility of intra-operative three-dimensional transoesophageal echocardiography for dynamic measurement of stroke volume

Variables Influencing the Accuracy of 2‐Dimensional and Real‐time 3‐Dimensional Echocardiography for Assessment of Small Volumes, Areas, and Distances

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