51
|
Lücke C, Karthe D, Grothoff M, Hoffmann J, Lehmkuhl L, Andres C, Eitel I, Thiele H, Gutberlet M. Prävalenz und Variabilität von Late Gadolinium „Mid-wall“ Enhancement (MLE) in Abhängigkeit von Untersuchererfahrung, Bildqualität und zugrundeliegender Erkrankung. ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1279372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
52
|
Riese F, Künzel E, Lücke C, Nitzsche S, Grothoff M, Gatzka C, Pap G, Gutberlet M. Indirekte MR-Arthrographie der Hüfte mittels 3Tesla MRT und dGEMRIC Knorpeldarstellung in Korrelation zum arthroskopischen Befund beim femoroazetabulären Impingement. ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1279335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
53
|
Gutberlet M, Hoffmann J, Künzel E, Fleischer A, Sarikouch S, Beerbaum P, Lehmkuhl L, Andres C, Lurz P, Kostelka M, Abdul-Khaliq H, Dähnert I, Grothoff M. Prä- und Postoperative Bildgebung bei Patienten mit Transposition der großen Gefäße. Radiologe 2010; 51:15-22. [DOI: 10.1007/s00117-010-1996-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
54
|
Grothoff M, Hoffmann J, Lehmkuhl L, Abdul-Khaliq H, Nitzsche S, Mahler A, Dähnert I, Berger F, Gutberlet M. Time course of right ventricular functional parameters after surgical correction of tetralogy of Fallot determined by cardiac magnetic resonance. Clin Res Cardiol 2010; 100:343-50. [DOI: 10.1007/s00392-010-0252-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2010] [Accepted: 11/03/2010] [Indexed: 11/28/2022]
|
55
|
Gutberlet M, Hoffmann J, Lehmkuhl L, Grothoff M. Vitien mit rechtsventrikulärer Beteiligung. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252377] [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]
|
56
|
Romswinkel SR, Lücke C, Kämpfert J, Nitzsche S, Grothoff M, Schuler G, Mohr FW, Walther T, Gutberlet M. Prä- und postoperatives Monitoring zerebraler Mikroembolien nach konventionellem, apikalem und kathetergestütztem Aortenklappenersatz mit der Magnet Resonanz Tomographie (MRT). ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252647] [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]
|
57
|
Lehmkuhl L, Aspern KV, Foldyna B, Grothoff M, Nitzsche S, Herz F, Gutberlet M. Vermessung der Aortenwurzel bei Patienten vor transapikalem Aortenklappenersatz mit Dyna-CT und Computertomographie: Zuverlässigkeit und Variabilität. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252839] [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]
|
58
|
Foldyna B, Apsern KV, Herz F, Grothoff M, Nitzsche S, Gutberlet M, Lehmkuhl L. Genauigkeit der CT-Koronarangiographie bei Patienten mit hochgradiger Aortenstenose vor transapikalem Aortenklappenersatz. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252574] [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]
|
59
|
Grothoff M, Hoffmann J, Lehmkuhl L, Berger F, Abdul-Khaliq H, Gutberlet M. Verlauf von kardialen Parametern nach korrigierter Fallotscher Tetralogie in der MRT. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252904] [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]
|
60
|
Grothoff M, Elpert C, Lehmkuhl L, Hoffmann J, Nitzsche S, Thiele H, Gutberlet M. Rechtsventrikuläre Beteiligung bei akutem Myokardinfarkt. Evaluation von Ödem, Delayed Enhancement und RV Funktion mittels MRT und ihr prognostischer Wert. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252905] [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]
|
61
|
Lücke C, Cynrim C, Herz F, Foldyna B, Schindler K, Grothoff M, Nitzsche S, Gutberlet M, Lehmkuhl L. Einfluss von EKG-Qualitäten auf die Strahlendosis der prospektiv getriggerten Computertomographie des Herzens. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252626] [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]
|
62
|
Lehmkuhl L, Grothoff M, Nitzsche S, Thiele H, Schuler G, Mohr FW, Gutberlet M. Computertomographie des Herzens. Dtsch Med Wochenschr 2009; 134:993-7. [DOI: 10.1055/s-0029-1222557] [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]
|
63
|
Fleischer A, Hoffmann J, Grothoff M, Lehmkuhl L, Nitzsche S, Gutberlet M. Evaluation der linksventrikulären Funktion bei Patienten mit kongenital korrigierter Transposition der großen Arterien (L-TGA), nach Vorhofumkehr-OP (D-TGA) und bei einem Normalkollektiv mit der MRT. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221610] [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]
|
64
|
Nitzsche S, Lehmkuhl L, Grothoff M, Hilbert S, Hindricks G, Gutberlet M. Untersuchungen der Bildqualität verschiedener Kardio-CT-Protokolle zur Dosisminimierung bei der präinterventionellen Diagnostik der Vorhofanatomie. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221285] [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]
|
65
|
Gutberlet M, Grothoff M, Lehmkuhl L, Fleischer A. Vitien mit rechtsventrikulärer Beteiligung. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221204] [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]
|
66
|
Thuss-Patience PC, Kretzschmar A, Dogan Y, Rothmann F, Blau I, Schwaner I, Lebedinzew B, Grothoff M, Dörken B, Reichardt P. Docetaxel and capecitabine for advanced gastric cancer: Phase II study investigating dose dependent efficacy in two patient cohorts. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.4551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
67
|
Fleischer A, Hoffmann J, Schindler K, Nitzsche S, Grothoff M, Abdul-Khaliq H, Berger F, Gutberlet M. Kernspintomographische Ventrikelvolumetrie und Funktionsanalyse bei der kongenital korrigierten TGA (L-TGA). ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
68
|
Krüger F, Dugas M, Klimes K, Spors B, Grothoff M, Abdul-Khaliq H, Berger F, Hamm B, Gutberlet M. Einfluss rechtsatrialer Funktionsparameter auf die elektrische Erregungsausbreitung. Eine MRT Studie. ROFO-FORTSCHR RONTG 2007. [DOI: 10.1055/s-2007-977057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
69
|
Grothoff M, Spors B, Abdul-Khaliq H, Abd El Rahman M, Alexi-Meskishvili V, Lange P, Felix R, Gutberlet M. Pulmonary regurgitation is a powerful factor influencing QRS duration in patients after surgical repair of tetralogy of Fallot. Clin Res Cardiol 2006; 95:643-9. [PMID: 17021680 DOI: 10.1007/s00392-006-0440-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2006] [Accepted: 08/11/2006] [Indexed: 11/30/2022]
Abstract
AIMS QRS prolongation is a negative prognostic factor for the development of ventricular arrhythmia after repair of tetralogy of Fallot (TOF). In this MRI study, we performed a multivariate analysis to determine the influence of volumetric and functional parameters as well as time factors on QRS duration. METHODS AND RESULTS Sixty-seven patients after surgical repair of TOF were studied using a 1.5T MRI. Measurement of the ventricles was performed with a multislice-multiphase sequence. Left and right ventricular volumes, ejection fractions (EF) and myocardial masses were determined. Pulmonary regurgitant fraction (PRF) was quantified by velocity encoded flow measurement in the main pulmonary artery. Maximum QRS duration was taken from a 12-channel ECG. Mean maximum QRS duration was 132 ms (+/- 29 ms). Mean PRF was 29.2% (+/- 13.4%). QRS duration correlated significantly with PRF (r = 0.49; p < 0.01; n = 54) and with right ventricular enddiastolic volume index (RVEDVI) (r = 0.29; p < 0.05; n = 67). Multivariate analysis revealed that the combination of PRF, postoperative period, age at surgical repair, and left ventricular (LV) enddiastolic volume are correlated with QRS prolongation. CONCLUSION In patients after repair of TOF, pulmonary regurgitation is related to QRS prolongation. Furthermore, even LV size plays a role in the enlargement of the QRS complex.
Collapse
|
70
|
Gutberlet M, Fröhlich C, Spors B, Grothoff M, Klimes K, Abdul-Khaliq H, Berger F, Felix R. Kongenitale Vitien. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-940428] [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]
|
71
|
Gutberlet M, Mehl S, Fröhlich M, Hausmann H, Plotkin M, Ruf J, Denecke T, Spors B, Grothoff M, Hetzer R, Felix R, Amthauer H. [Determination of ventricular volumes in coronary artery disease: comparison of two gated SPECT analysis tools with MRI]. Nuklearmedizin 2006; 45:63-73. [PMID: 16547567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
AIM Comparison of two gated SPECT analysis tools -- gated SPECT quantification (GSQ) and emory cardiac toolbox (ECT) -- in patients with coronary artery disease (CAD) and severely impaired left ventricular function (preoperative: EF <35% by cardiac catheter). PATIENTS, METHODS A total of 56 gated SPECT examinations (one-day hybrid-protocol with (201)Tl-chloride for rest and (99m)Tc-sestamibi for stress applied during low-dose dobutamine stress MR-examination; temporal resolution; 8 phases per cardiac cycle) were performed in 36 patients (31 preoperatively, 25 postoperatively) and compared with MRI in 48 cases. Left ventricular end-diastolic (LV-EDV) and end-systolic (LV-ESV) volumes as well as the left ventricular ejection fraction (LV-EF) were calculated. RESULTS The total volumetric assessment by both analysis algorithms (n = 56) showed good intraclass correlation coefficients preoperatively (n = 31), but even better postoperatively (n = 25). The mean reconstruction time was approximately 3 minutes ( +/- 2 SD) for GSQ and 15 minutes ( +/- 5 SD) for ECT. In comparison to MRI the results of both analysis tools also correlated well, but the agreement decreased in the presence of scared tissue. The mean LV-EF (MRI) preoperatively was 30.4%, in 6/36 patients above the values calculated from cardiac catheter, postoperatively 34.6%. CONCLUSION Both gated SPECT analysis tools showed reliable volumetric assessments in high-risk patients with CAD and severely reduced LV-EF in comparison to MRI, with advantages for GSQ in terms of postprocessing time. However, for the calculation of LV-EF a markedly lower concordance with MR-results was observed for both methods depending on the presence of myocardial scars.
Collapse
|
72
|
Gutberlet M, Hoffmann J, Fröhlich C, Grothoff M, Spors B, Abdul-Khaliq H, Berger F, Felix R, Gutberlet M. Funktionelle und volumetrische Analyse des rechten und linken Ventrikels nach Vorhofumkehroperation bei Transposition der großen Gefäße mit der MRT im Vergleich zu einem Normalkollektiv. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-940946] [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]
|
73
|
Gutberlet M, Spors B, Grothoff M, Freyhardt P, Amthauer H, Noeske R, Schultheiss HP, Felix R. Optimierung der Bildqualität bei der kardialen MRT-Vitalitätsdiagnostik mittels „late enhancement“ bei 3.0 T durch Einsatzes eines adiabatischen Präparationspulses. ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-867890] [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]
|
74
|
Gutberlet M, Spors B, Klimes K, Grothoff M, Seibt C, Wiethoff J, Fröhlich M, Felix R. Diagnostik kongenitaler Herzerkrankungen. ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-867313] [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]
|
75
|
Spors B, Freyhardt P, Klimes K, Grothoff M, Noeske R, Felix R, Gutberlet M. Cardiac imaging at 3 Tesla: Comparison of different sequences and the use of parallel imaging at 1.5 and 3.0 T. ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-865261] [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]
|
76
|
Gutberlet M, Freyhardt P, Spors B, Schwinge K, Grothoff M, Noeske R, Niendorf T, Felix R. Cardiovascular Magnetic Resonance Imaging at 3.0 Tesla. ACTA ACUST UNITED AC 2004. [DOI: 10.1111/j.1617-0830.2004.00025.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
77
|
Gutberlet M, Spors B, Grothoff M, Freyhardt P, Schwinge K, Plotkin M, Amthauer H, Noeske R, Felix R. Comparison of different cardiac MRI sequences at 1.5 T/3.0 T with respect to signal-to-noise and contrast-to-noise ratios - initial experience. ROFO-FORTSCHR RONTG 2004; 176:801-8. [PMID: 15173972 DOI: 10.1055/s-2004-813220] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
PURPOSE To compare image quality, signal-to-noise (SNR) and contrast-to-noise ratios (CNR) of different MRI sequences for cardiac imaging at 1.5 T and 3.0 T in volunteers. MATERIAL AND METHODS 10 volunteers (5 male, 5 female) with a mean age of 33 years (+/- 8) without any history of cardiac diseases were examined on a GE Signa 3.0 T and a GE Signa 1.5 T TwinSpeed Excite (GE Medical Systems, Milwaukee, WI, USA) scanner using a 4-element phased array surface coil (same design) on the same day. For tissue characterization ECG gated Fast Spinecho (FSE) T (1)- (Double IR), T (1)-STIR (Triple IR) and T (2)-weighted sequences in transverse orientation were used. For functional analysis a steady state free precession (SSFP - FIESTA) sequence was performed in the 4-chamber, 2-chamber long axis and short axis view. The flip angle used for the SSFP sequence at 3.0 T was reduced from 45 degrees to 30 degrees to keep short TR times while staying within the pre-defined SAR limitations. All other sequence parameters were kept constant. RESULTS All acquisitions could successfully be completed for the 10 volunteers. The mean SNR 3.0 T compared to 1.5 T was remarkably increased (p < 0.05) for the T (2) - (160 % SNR increase), the STIR-T (1)- (123 %) and the T (1)- (91 %) weighted FSE. Similar results were found comparing CNR at 3.0 T and 1.5 T. The mean SNR achieved using the SSFP sequences was more than doubled by 3.0 T (150 %), but did not have any significant effect on the CNR. The image quality at 3.0 T did not appear to be improved, and was considered to be significantly worse when using SSFP sequences. Artefacts like shading in the area of the right ventricle (RV) were found to be more present at 3.0 T using FSE sequences. After a localized shim had been performed in 5/10 volunteers at the infero-lateral wall of the left ventricle (LV) with the SSFP sequences at 3.0 T no significant increase in artefacts could be detected. CONCLUSIONS In all cardiac FSE sequences, SNR and CNR at 3.0 T were found to be increased compared to 1.5 T without any major changes of the sequence parameters. The adjusted SSFP sequences fulfilled the expected increase in SNR at 3.0 T but showed no increase in CNR. On the contrary, the overall image quality did not change or was even found to be significantly lower for the SSFP and the FSE sequences at the free wall of the RV. Nevertheless, the results are encouraging for the use of 3.0 T for cardiac tissue characterization and new applications with progressing use of parallel imaging.
Collapse
|
78
|
Gutberlet M, Spors B, Grothoff M, Noeske R, Felix R. Comparison of different cardic MRI sequences at 1.5 and 3T in respect of image quality, signal- and contrast-to-noise ratios: initial experience. ROFO-FORTSCHR RONTG 2004. [DOI: 10.1055/s-2004-820849] [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]
|
79
|
Spors B, Grothoff M, Noeske R, Freyhardt P, Durak M, Schwinge K, Felix R, Gutberlet M. Vergleich verschiedener kardialer MRT Sequenzen zwischen 1.5 und 3.0 T bezüglich Bildqualität, Signal- und Kontrast-zu-Rausch Verhältnis. ROFO-FORTSCHR RONTG 2004. [DOI: 10.1055/s-2004-827590] [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]
|
80
|
Wiethoff J, Seibt C, Grothoff M, Fröhlich M, Felix R, Gutberlet M. Bestimmung des septalen Krümmungsradius zur Abschätzung der rechtsventrikulären Volumenbelastung bei Patienten mit korrigierter Fallotscher Tetralogie im Vergleich zu einem Probandenkol. ROFO-FORTSCHR RONTG 2004. [DOI: 10.1055/s-2004-827929] [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]
|
81
|
Seibt C, Fröhlich M, Wiethoff J, Grothoff M, Spors B, Felix R, Gutberlet M. Vergleich der myokardialen Wandgeschwindigkeit mit der MRT zwischen Patienten nach Korrektur einer Fallotschen Tetralogie und Patienten mit Vorhofumkehroperation bei Transposition der großen Gef&. ROFO-FORTSCHR RONTG 2004. [DOI: 10.1055/s-2004-827930] [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]
|
82
|
Gutberlet M, Spors B, Grothoff M, Noeske R, Freyhardt P, Durak M, Schwinge K, Felix R. Vergleich verschiedener kardialer MRT Funktionsanalysesequenzen bei 1.5 T und 3.0 T mit und ohne Einsatz der parallelen Bildgebung (ASSET). ROFO-FORTSCHR RONTG 2004. [DOI: 10.1055/s-2004-827591] [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]
|
83
|
Gutberlet M, Mielec M, Spors B, Grothoff M, Noeske M, Felix R. Vergleich verschiedener Kardio-MRT-Sequenzen bei 1,5 T und 3 T in Bezug auf Bildqualität, Signal- und Kontrast-zu-Rausch-Verhältnis: Erste Ergebnisse. ROFO-FORTSCHR RONTG 2003. [DOI: 10.1055/s-2003-819930] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
84
|
Gutberlet M, Abdul-Khaliq H, Grothoff M, Schröter J, Schmitt B, Röttgen R, Lange P, Vogel M, Felix R. [Evaluation of left ventricular volumes in patients with congenital heart disease and abnormal left ventricular geometry. Comparison of MRI and transthoracic 3-dimensional echocardiography]. ROFO-FORTSCHR RONTG 2003; 175:942-51. [PMID: 12847649 DOI: 10.1055/s-2003-40435] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
PURPOSE To assess the new method of 3-dimensional echocardiography in comparison to the "gold standard" MRI as to its ability to calculate left ventricular volumes in patients with congenital heart disease. MATERIALS AND METHODS Eighteen patients between the ages of 3.9 to 37.3 years (mean: 12.8 +/- 9.7) with a geometrically abnormal left ventricle were examined using a 1.5T scanner with a fast gradient-echo sequence (TR = 14 ms, TE = 2.6 - 2.9 ms, FOV = 300 - 400 mm, flip angle = 20 degrees, matrix = 128 : 256, slice thickness = 5 mm, retrospective gating) in multislice-multiphase technique. Transthoracic 3D-echocardiography was performed with a 3.5 MHz transducer and a Tomtec (Munich, Germany) system for 3D reconstruction. RESULTS Volume calculation was possible in all patients with 3D-echocardiography, but the muscle mass calculation only succeeded in 11 of 18 patients (61 %) due to inadequate visualization of the entire myocardium. Comparing MRI and 3D-echocardiography, the correlation was r = 0.97 for the end-systolic volumes, r = 0.98 for the end-diastolic volumes, r = 0.79 for the end-systolic muscle mass and r = 0.77 for the end-diastolic muscle mass. The agreement between both methods was considered good for the calculated end-diastolic volumes and sufficient for the calculated end-systolic volumes. The muscle mass calculations showed larger differences especially for the end-systolic mass. Mean intraobserver variability was 18.6 % for end-systolic and 8.3 % for end-diastolic volumes. CONCLUSION In patients with an abnormal left ventricular configuration due to congenital heart disease, the new method of 3D-echocardiography is sufficient for volume calculations in preselected patients. The high intraobserver variability is still a limitation of transthoracic 3D-echocardiography in comparison to MRI.
Collapse
|