101
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Wirth C, Brenner S, Oechsner M, Stäb D, Hebestreit H, Köstler H, Hahn D, Beer M. O2-unterstützte funktionelle Lungenuntersuchung am offenen Niederfeld-MRT bei Patienten mit zystischer Fibrose. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252787] [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]
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102
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Weng AM, Ritter CO, Lotz J, Beer M, Hahn D, Köstler H. Pixelbasierte Absolutquantifizierung der myokardialen Perfusion in der MRT – Berechnung von Perfusionskarten aus MR First-Pass Perfusionsuntersuchungen. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0029-1247986] [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]
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103
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Weininger M, Ritz K, Ritter CO, Hahn D, Beissert M. Koronares Kalzium-Scoring in der CT: Ergeben verschiedene Analyseprogramme vergleichbare Ergebnisse? – Bestimmung des koronaren Kalzium-Scores. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0029-1247988] [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]
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104
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Ritter CO, Baier U, Sommer SP, Leyh R, Hahn D, Beer M. Vergleichende funktionelle MR-Bildgebung bei Patienten nach ROSS-Operation in Wurzelersatz- und subkoronarer Technik im ersten postoperativen Jahr – Kardio-MRT nach ROSS-OP. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0029-1247968] [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]
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105
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Sagmeister F, Weidemann F, Voelker W, Hahn D, Köstler H, Beer M. Magnetresonanztomografische Bestimmung der Fläche des linksventrikulären Ausflusstraktes mittels Phasenkontrastflussmessungen – Planimetrischer Nachweis der ekzentrischen Form des LVOT. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0029-1247990] [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]
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106
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Petritsch B, Wanner C, Hahn D, Köstler H, Beer M. Nicht invasive myokardiale Triglyceridmessung bei Morbus Fabry Patienten mittels Protonen Magnetresonanzspektroskopie (1H-MRS). – Die myocardiale Steatose gehört nicht zum Pathomechanismus der Fabry Kardiomyopathie. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0029-1247969] [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]
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107
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Sagmeister F, Weidemann F, Voelker W, Hahn D, Köstler H, Beer M. Anwendung der Magnetresonanztomografie zur nichtinvasiven Bestimmung der Druckerholung bei Patienten mit Aortenklappenstenosen – Abschätzung der poststenotischen Druckerholung durch Bestimmung aortaler Durchmesser distal der Aortenklappe. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0029-1247980] [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]
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108
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Beer M, Stäb D, Oechsner M, Hahn D, Köstler H, Hebestreit H, Jakob P. [Oxygen-enhanced functional MR lung imaging]. Radiologe 2009; 49:732-8. [PMID: 19657614 DOI: 10.1007/s00117-009-1883-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Current diagnostic tools for the assessment of lung function are limited by global measurements or the need for radioactive tracers. Ideally, these tools should allow quantitative, regional distinct analyses without exposure to radiation. The current paper presents oxygen-enhanced functional MRI for assessment of lung ventilation. First applied in humans in 1996, a considerable amount of experience is now available on 1.5T scanners. The generation of quantitative T1-maps shows a high clinical potential. Low-field MR scanners, which are mostly open-designed, are especially interesting for functional lung imaging. The open design has advantages in respect to patient comfort by lower noise production and easy access to the patients and the costs are lower (no need for helium cooling). Lower signal-to-noise ratios can be overcome by changing the relaxation times. New navigator techniques allow further compensations. This article focuses on the presentation of low-field scanners and the application of T1 and T2(*) maps is described for healthy volunteers and first patients.
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109
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Hahn D, Fuchs U, Blättner B. Die Übertragbarkeit internationaler Erfahrungen in der zahnärztlichen Versorgung gewaltbetroffener Frauen auf das deutsche Versorgungssystem: Das Projekt ZuGang. DAS GESUNDHEITSWESEN 2009. [DOI: 10.1055/s-0029-1239052] [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]
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110
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Herbert F, Hahn D, Gröbe S, Kling B, Klüglein A, Schimmelpfeng K. Prävention depressiver Erkrankungen im europäischen Vergleich. DAS GESUNDHEITSWESEN 2009. [DOI: 10.1055/s-0029-1239276] [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]
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111
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Suttrop W, Gruber O, Günter S, Hahn D, Herrmann A, Rott M, Vierle T, Seidel U, Sempf M, Streibl B, Strumberger E, Yadikin D, Neubauer O, Unterberg B, Gaio E, Toigo V, Brunsell P. In-vessel saddle coils for MHD control in ASDEX Upgrade. FUSION ENGINEERING AND DESIGN 2009. [DOI: 10.1016/j.fusengdes.2008.12.044] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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112
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Jeong HY, Ha KS, Kwon YM, Lee YB, Hahn D. Analysis of three different types of blockage in a sodium flow path with the MATRA-LMR-FB code. ANN NUCL ENERGY 2009. [DOI: 10.1016/j.anucene.2009.01.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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113
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Goltz J, Kenn W, Hahn D, Ritter C. Der Klatskin-Tumor: Moderne radiologische Diagnostik, Interventions- und Therapiemöglichkeiten. Dtsch Med Wochenschr 2009; 134:985-8. [DOI: 10.1055/s-0029-1222555] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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114
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Weininger M, Sagmeister F, Herrmann S, Weidemann F, Ritter C, Köstler H, Hahn D, Beer M. Beurteilung der Klappendynamik bei hochgradiger Aortenstenose: Kann die MRT einen neuen Vorhersagewert zur Beurteilung der Regression der links-ventrikulären Masse nach Klappenersatztherapie liefern? ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221611] [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]
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115
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Weininger M, Sommer C, Ritter CO, Hahn D, Beissert M. Diagnostik der akuten Mediastinitis nach Sternotomie: Gibt es typische CT-Befunde? ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221583] [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]
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116
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Goltz JP, Scholl A, Ritter CO, Klein D, Wittenberg G, Hahn D, Kickuth R. Minimal-invasive perkutane Implantation von Port-a-Cath-Systemen am Unterarm: klinische Erfahrungen bei 750 Patienten. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221437] [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]
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117
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Weng A, Ritter CO, Lotz J, Hahn D, Beer M, Köstler H. Evaluation einer vollautomatischen Quantifizierung von MR-Herz-Perfusionsuntersuchungen. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221498] [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]
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118
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Stäb D, Breuer F, Blaimer M, Hahn D, Köstler H. CAIPIRINHA-beschleunigte simultane Mehrschicht-Echtzeit-MR-Bildbebung mit TrueFISP. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221429] [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]
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119
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Stäb D, Ritter C, Beer M, Weng A, Gutberlet M, Hahn D, Köstler H. Einsatz von Paralleler Bildgebung zur Steigerung des SNR in der MR-Herzperfusionsbildgebung. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221323] [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]
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120
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Stäb D, Ritter C, Weng A, Beer M, Hahn D, Köstler H. Mit CAIPIRINHA beschleunigte Mehrschicht-TrueFISP-MR-Herzperfusionsbildgebung mit vollständiger Herzabdeckung. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221517] [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]
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121
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Ritter CO, Kowalski M, Weng A, Beer M, Hahn D, Köstler H. Quantitative MR Herz Perfusionsbildgebung in Ruhe und unter Cold Pressor Test. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221467] [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]
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122
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Goltz J, Gattenlöhner S, Hahn D, Ritter C. Rupturiertes Riesen-Myelolipom der Nebenniere mit akuter retroperitonealer Blutung. ROFO-FORTSCHR RONTG 2009; 181:485-7. [DOI: 10.1055/s-0028-1109111] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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123
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Schimmer C, Weininger M, Hamouda K, Ritter C, Sommer SP, Bensch M, Hahn D, Beissert M, Leyh RG. Indicators in the diagnosis of poststernotomy-mediastinitis after cardiac surgery. Thorac Cardiovasc Surg 2009. [DOI: 10.1055/s-0029-1191404] [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]
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124
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Schimmer C, Weininger M, Hamouda K, Ritter C, Sommer SP, Bensch M, Hahn D, Beissert M, Leyh RG. Early diagnosis of poststernotomy mediastinitis: Are there typical findings in contrast-enhanced CT? Thorac Cardiovasc Surg 2009. [DOI: 10.1055/s-0029-1191740] [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]
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125
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Beer M, Winkelmann V, Becker JC, Terheyden P, Stenzel M, Bröcker EB, Hahn D, Köstler H. [Spectroscopic imaging of the human liver using 3D CSI: optimization and application in patients with metastatic uvea melanoma]. ROFO-FORTSCHR RONTG 2008; 181:60-6. [PMID: 19085691 DOI: 10.1055/s-2008-1027887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
PURPOSE (31)P MR spectroscopy (MRS) allows the noninvasive assessment of metabolic alterations in tumors. Due to physical as well as technical limitations, mostly large and single voxels are used. We used a spatially resolved (31)P MRS technique to characterize metabolic abnormalities inside and adjacent to liver metastases of patients with uvea melanoma. MATERIALS AND METHODS Optimization of 3D chemical shift imaging (3D CSI) was performed in healthy volunteers (n = 19; voxel size 25 ml). Patients (n = 8) with liver metastases were then examined. Cross sectional imaging was available for all patients. RESULTS Compared to healthy volunteers, the PME/PDE ratios of patients with liver metastasis were significantly higher (0.56 +/- 0.30 vs. 0.39 +/- 0.21; p < 0.05). A trend towards increased PME/beta ATP ratios (2.07 +/- 1.83 vs. 1.02 +/- 0.45; p = 0.12) and decreased Pi/PME ratios (0.57 +/- 0.29 vs. 1.06 +/- 0.58; p = 0.06) was also observed. Patients with metastases > or = 5 cm showed significantly higher PME/PDE ratios (0.68 +/- 0.17 vs. 0.45 +/- 0.03; p < 0.05). Liver parenchyma adjacent to metastases did not show any significant changes compared to non-diseased tissue. CONCLUSION 3D CSI allows the simultaneous analysis of metabolic alterations in diseased as well as in healthy human liver. Metastases show significant metabolic alterations. Thus, (31)P MRS opens new possibilities for therapeutic monitoring.
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