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Abstract
BACKGROUND Both, acute and chronic pancreatitis represent complex disease patterns, whose effective treatment is based on structured diagnostics and therapy by a multi-professional team. There are different systems for an improved objectivity in the classification of the severity of the disease OBJECTIVES: Overview of the common classifications of acute and chronic pancreatitis. MATERIALS AND METHODS Literature research of currently used classifications of acute and chronic pancreatitis. Evaluation of the current chronic pancreatitis guideline. RESULTS For acute pancreatitis, the modified Atlanta Classification and the "determinant-based" classification are most widely used. These classifications are complemented by clinical risk scores such as the Marshall Score and the SOFA Score. In chronic pancreatitis, the image-based Cambridge classification was established. For clinical assessment further classifications such as the ABC classification and the M‑ANNHEIM classification are applied evaluating leading symptoms such as pain, exocrine and endocrine pancreatic insufficiency.
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Affiliation(s)
- K F Hoß
- Klinik für diagnostische und interventionelle Radiologie, Universitätsklinikum Bonn, Venusberg-Campus 1, 53127, Bonn, Deutschland.
| | - U I Attenberger
- Klinik für diagnostische und interventionelle Radiologie, Universitätsklinikum Bonn, Venusberg-Campus 1, 53127, Bonn, Deutschland
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Kupczyk PA, Mesropyan N, Isaak A, Endler C, Faron A, Kuetting D, Sprinkart AM, Mädler B, Thomas D, Attenberger UI, Luetkens JA. Quantitative MRI of the liver: Evaluation of extracellular volume fraction and other quantitative parameters in comparison to MR elastography for the assessment of hepatopathy. Magn Reson Imaging 2020; 77:7-13. [PMID: 33309923 DOI: 10.1016/j.mri.2020.12.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 11/27/2020] [Accepted: 12/06/2020] [Indexed: 12/22/2022]
Abstract
BACKGROUND Chronic liver diseases pose a major health problem worldwide, while common tests for diagnosis and monitoring of diffuse hepatopathy have considerable limitations. Preliminary data on the quantification of hepatic extracellular volume fraction (ECV) with magnetic resonance imaging (MRI) for non-invasive assessment of liver fibrosis are encouraging, with ECV having the potential to overcome several of these constraints. PURPOSE To clinically evaluate ECV provided by quantitative MRI for assessing the severity of liver disease. MATERIALS AND METHODS In this prospective study, multiparametric liver MRI, including T1 mapping and magnetic resonance elastography (MRE), was performed in subjects with and without hepatopathy between November 2018 and October 2019. T1, T2, T2*, proton density fat fraction and stiffness were extracted from parametric maps by regions of interest and ECV was calculated from T1 relaxometries. Serum markers of liver disease were obtained by clinical database research. For correlation analysis, Spearman rank correlation was used. ROC analysis of serum markers and quantitative MRI data for discrimination of liver cirrhosis was performed with MRE as reference standard. RESULTS 109 participants were enrolled (50.7 ± 16.1 years, 61 men). ECV, T1 and MRE correlated significantly with almost all serum markers of liver disease, with ECV showing the strongest associations (up to r = 0.67 with MELD, p < 0.01). ECV and T1 correlated with MRE (0.75 and 0.73, p < 0.01 each). ECV (AUC 0.89, cutoff 32.2%, sensitivity 85%, specificity 87%) and T1 mapping (AUC 0.85, cutoff 592.5 ms, sensitivity 83%, specificity 75%) featured good performances in detection of liver cirrhosis with only ECV performing significantly superior to model of end stage liver disease (MELD), AST/ALT ratio and international normalized ratio (p < 0.01, respectively). CONCLUSION Quantification of hepatic extracellular volume fraction with MRI is suitable for estimating the severity of liver disease when using MRE as the standard of reference. It represents a promising tool for non-invasive assessment of liver fibrosis and cirrhosis.
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Affiliation(s)
- P A Kupczyk
- University Hospital Bonn, Department of Diagnostic and Interventional Radiology, Quantitative Imaging Lab Bonn (QILaB), Venusberg-Campus 1, 53127 Bonn, Germany.
| | - N Mesropyan
- University Hospital Bonn, Department of Diagnostic and Interventional Radiology, Quantitative Imaging Lab Bonn (QILaB), Venusberg-Campus 1, 53127 Bonn, Germany
| | - A Isaak
- University Hospital Bonn, Department of Diagnostic and Interventional Radiology, Quantitative Imaging Lab Bonn (QILaB), Venusberg-Campus 1, 53127 Bonn, Germany
| | - C Endler
- University Hospital Bonn, Department of Diagnostic and Interventional Radiology, Quantitative Imaging Lab Bonn (QILaB), Venusberg-Campus 1, 53127 Bonn, Germany
| | - A Faron
- University Hospital Bonn, Department of Diagnostic and Interventional Radiology, Quantitative Imaging Lab Bonn (QILaB), Venusberg-Campus 1, 53127 Bonn, Germany
| | - D Kuetting
- University Hospital Bonn, Department of Diagnostic and Interventional Radiology, Quantitative Imaging Lab Bonn (QILaB), Venusberg-Campus 1, 53127 Bonn, Germany
| | - A M Sprinkart
- University Hospital Bonn, Department of Diagnostic and Interventional Radiology, Quantitative Imaging Lab Bonn (QILaB), Venusberg-Campus 1, 53127 Bonn, Germany
| | - B Mädler
- Philips Healthcare, Hamburg, Germany
| | - D Thomas
- University Hospital Bonn, Department of Diagnostic and Interventional Radiology, Quantitative Imaging Lab Bonn (QILaB), Venusberg-Campus 1, 53127 Bonn, Germany
| | - U I Attenberger
- University Hospital Bonn, Department of Diagnostic and Interventional Radiology, Quantitative Imaging Lab Bonn (QILaB), Venusberg-Campus 1, 53127 Bonn, Germany
| | - J A Luetkens
- University Hospital Bonn, Department of Diagnostic and Interventional Radiology, Quantitative Imaging Lab Bonn (QILaB), Venusberg-Campus 1, 53127 Bonn, Germany
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Attenberger UI, Tavakoli A, Stocker D, Stieb S, Riesterer O, Turina M, Schoenberg SO, Pilz L, Reiner CS. Reduced and standard field-of-view diffusion weighted imaging in patients with rectal cancer at 3 T-Comparison of image quality and apparent diffusion coefficient measurements. Eur J Radiol 2020; 131:109257. [PMID: 32947092 DOI: 10.1016/j.ejrad.2020.109257] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 06/30/2020] [Accepted: 08/24/2020] [Indexed: 01/03/2023]
Abstract
PURPOSE To compare a zoomed EPI-DWI (z-EPI) with a standard EPI-DWI (s-EPI) in the primary diagnostics of rectal cancer and assess its potential of reduced image artifacts. METHOD 22 therapy-naïve patients with rectal cancer underwent rectal MRI at a 3 T-system. The protocols consisted of a z-EPI DWI and s-EPI DWI sequence. Images were assessed by two independent and experienced readers regarding overall image quality and artifacts on a 5-point Likert scale, as well as overall sequence preference. In a lesion-based analysis, tumor and lymph node detection were rated on a 4-point Likert scale. Apparent diffusion coefficient (ADC) measurements were performed. RESULTS Overall Image quality score for z-EPI and s-EPI showed no statistically significant differences (p = 0.80/0.54, reader 1/2) with a median score of 4 ("good" image quality) for both sequences. The image quality preference rank for z-EPI and s-EPI was given the category 'no preference' in 64 % (reader 1) and 50 % (reader 2). Most artifact-related scores (susceptibility, motion and distortion) did not show reproducible significant differences between z-EPI and s-EPI. The two sequences exhibited comparable, mostly good and excellent quality scores for tumor and lymph node detection (p = 0.19-0.99). ADC values were significantly lower for z-EPI than for s-EPI (p = 0.001/0.002, reader 1/2) with good agreement of ADC measurements between both readers. CONCLUSION Our data showed comparable image quality and lesion detection for the z-EPI and the s-EPI sequence in MRI of rectal cancer, whereas the mean ADC of the tumor was significantly lower in z-EPI compared to s-EPI.
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Affiliation(s)
- U I Attenberger
- Department of Diagnostic and Interventional Radiology, University Hospital Bonn, Bonn, Germany.
| | - A Tavakoli
- Department of Clinical Radiology and Nuclear Medicine, University Medical Center Mannheim, Mannheim, Germany; Department of Radiology, German Cancer Research Center (DKFZ), Germany.
| | - D Stocker
- Institute of Diagnostic and Interventional Radiology, University Hospital Zurich, Zurich, Switzerland.
| | - S Stieb
- Department of Radiation Oncology, University Hospital Zurich, Zurich, Switzerland
| | - O Riesterer
- Department of Radiation Oncology, University Hospital Zurich, Zurich, Switzerland.
| | - M Turina
- Department of Surgery and Transplantation, University Hospital Zurich, Zurich, Switzerland.
| | - S O Schoenberg
- Department of Clinical Radiology and Nuclear Medicine, University Medical Center Mannheim, Mannheim, Germany.
| | - L Pilz
- Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany.
| | - C S Reiner
- Institute of Diagnostic and Interventional Radiology, University Hospital Zurich, Zurich, Switzerland.
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Attenberger UI, Pilz LR, Morelli JN, Hausmann D, Doyon F, Hofheinz R, Kienle P, Post S, Michaely HJ, Schoenberg SO, Dinter DJ. Multi-parametric MRI of rectal cancer - do quantitative functional MR measurements correlate with radiologic and pathologic tumor stages? Eur J Radiol 2014; 83:1036-1043. [PMID: 24791649 DOI: 10.1016/j.ejrad.2014.03.012] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Revised: 02/27/2014] [Accepted: 03/11/2014] [Indexed: 12/13/2022]
Abstract
PURPOSE The purpose of this study is two-fold. First, to evaluate, whether functional rectal MRI techniques can be analyzed in a reproducible manner by different readers and second, to assess whether different clinical and pathologic T and N stages can be differentiated by functional MRI measurements. MATERIALS AND METHODS 54 patients (38 men, 16 female; mean age 63.2 ± 12.2 years) with pathologically proven rectal cancer were included in this retrospective IRB-approved study. All patients were referred for a multi-parametric MRI protocol on a 3 Tesla MR-system, consisting of a high-resolution, axial T2 TSE sequence, DWI and perfusion imaging (plasma flow -s PFTumor) prior to any treatment. Two experienced radiologists evaluated the MRI measurements, blinded to clinical data and outcome. Inter-reader correlation and the association of functional MRI parameters with c- and p-staging were analyzed. RESULTS The inter-reader correlation for lymph node (ρ 0.76-0.94; p<0.0002) and primary tumor (ρ 0.78-0.92; p<0.0001) apparent diffusion coefficient and plasma flow (PF) values was good to very good. PFTumor values decreased with cT stage with significant differences identified between cT2 and cT3 tumors (229 versus 107.6 ml/100ml/min; p=0.05). ADCTumor values did not differ significantly. No substantial discrepancies in lymph node ADCLn values or short axis diameter were found among cN1-3 stages, whereas PFLn values were distinct between cN1 versus cN2 stages (p=0.03). In the patients without neoadjuvant RCT no statistically significant differences in the assessed functional parameters on the basis of pathologic stage were found. CONCLUSION This study illustrates that ADC as well as MR perfusion values can be analyzed with good interobserver agreement in patients with rectal cancer. Moreover, MR perfusion parameters may allow accurate differentiation of tumor stages. Both findings suggest that functional MRI parameters may help to discriminate T and N stages for clinical decision making.
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Affiliation(s)
- U I Attenberger
- Institute of Clinical Radiology and Nuclear Medicine, University Medical Center Mannheim, Germany
| | - L R Pilz
- Medical Faculty Mannheim, University of Heidelberg, Germany
| | - J N Morelli
- Scott & White Memorial Hospital and Clinic, Temple, TX, USA
| | - D Hausmann
- Institute of Clinical Radiology and Nuclear Medicine, University Medical Center Mannheim, Germany.
| | - F Doyon
- Department of Surgery, University Medical Center Mannheim, Germany
| | - R Hofheinz
- Department of Oncology, University Medical Center Mannheim, Germany
| | - P Kienle
- Department of Surgery, University Medical Center Mannheim, Germany
| | - S Post
- Department of Surgery, University Medical Center Mannheim, Germany
| | - H J Michaely
- Institute of Clinical Radiology and Nuclear Medicine, University Medical Center Mannheim, Germany
| | - S O Schoenberg
- Institute of Clinical Radiology and Nuclear Medicine, University Medical Center Mannheim, Germany
| | - D J Dinter
- Institute of Clinical Radiology and Nuclear Medicine, University Medical Center Mannheim, Germany
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Attenberger UI, Quick HH, Guimaraes A, Catalano O, Morelli JN, Schoenberg SO. [Value of new MR techniques in MR-PET]. Radiologe 2013; 53:1118-24. [PMID: 24221697 DOI: 10.1007/s00117-013-2559-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The unparalleled soft tissue contrast of magnetic resonance imaging (MRI) and the functional information obtainable with 18-F fluorodeoxyglucose positron emission tomography (FDG-PET) render MR-PET well-suited for oncological and psychiatric imaging. The lack of ionizing radiation with MRI also makes MR-PET a promising modality for oncology patients requiring frequent follow-up and pediatric patients. Lessons learned with PET computed tomography (CT) over the last few years do not directly translate to MR-PET. For example, in PET-CT the Hounsfield units derived from CT are used for attenuation correction (AC). As 511 keV photons emitted in PET examinations are attenuated by the patient's body CT data are converted directly to linear attenuation coefficients (LAC); however, proton density measured by MRI is not directly related to the radiodensity or LACs of biological tissue. Thus, direct conversion to LAC data is not possible making AC more challenging in simultaneous MRI-PET scanning. In addition to these constraints simultaneous MRI-PET acquisitions also improve on some solutions to well-known challenges of hybrid imaging techniques, such as limitations in motion correction. This article reports on initial clinical experiences with simultaneously acquired MRI-PET data, focusing on the potential benefits and limitations of MRI with respect to motion correction as well as metal and attenuation correction artefacts.
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Affiliation(s)
- U I Attenberger
- Institut für klinische Radiologie und Nuklearmedizin, Universitätsmedizin Mannheim, Medizinische Fakultät Mannheim der Universität Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Deutschland,
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Michaely HJ, Budjan J, Riffel P, Schoenberg SO, Attenberger UI. Dynamische Bildgebung des Abdomens mit einer CAIPIRINHA-DIXON-TWIST VIBE: Erste Ergebnisse. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1346349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Michaely HJ, Haneder S, Schönberg SO, Augustin J, Pietsch H, Jost G, Attenberger UI. Einfluss monomerer und dimerer Röntgenkontrastmittel auf die renale Oxygenierung. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Reichert M, Tao A, Ritschl R, Ritschl A, Hansmann JH, Dix JE, Schönberg SO, Runge VM, Attenberger UI. Evaluation des Benefits dedizierter Akquisitionstechniken zur verbesserten Detektion von Hirnfiliae - Vergleich einer T1-gewichteten, Spinecho-basierten 3D SPACE mit einer 3D MP-RAGE-Sequenz bei 3 Tes. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Reichert M, Ai T, Nittka M, Zbigniew G, Schönberg SO, Runge VM, Attenberger UI. Möglichkeiten zur Metallartefaktreduktion im MRT bei 1,5 Tesla als auch 3 Tesla unter Verwendung innovativer Sequenztechniken. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Hansmann JH, Fink C, Zöllner FG, Henzler T, Meyer M, Reichert M, Weisser G, Schoenberg SO, Attenberger UI. Wie korrelieren Dual-Energy CT-basierte Jodkarten mit der parametrischen MR-Perfusion der Lunge? ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Haneder S, Konstandin S, Attenberger UI, Budjan J, Schönberg SO, Michaely HJ. Quantitative 23Na-, BOLD- und DWI-Bildgebung der gesunden menschlichen Niere zur Etablierung von Normwerten bei 3,0T. ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1279407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Haneder S, Attenberger UI, Riffel P, Henzler T, Schönberg SO, Michaely HJ. MRA der Unterschenkelgefäße bei 3T: Intraindividueller Vergleich zwischen KM-freier EKG-getriggerter 3D Turbospinecho-MRA und KM-verstärkten Techniken mit CTM bzw. hoher zeitlicher Auflösung. ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1279357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Michaely HJ, Metzger L, Attenberger UI, Haneder S, Schoenberg SO. Statische MR-BOLD Messungen der Nieren geben keinen Aufschluss über die Nierenfunktion: eine prospektive Studie in 246 Patienten. ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1279382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Voth M, Attenberger UI, Luckscheiter A, Haneder S, Henzler T, Schoenberg SO, Schwenke C, Michaely HJ. "Number needed to read"--how to facilitate clinical trials in MR-angiography. Eur Radiol 2010; 21:1034-42. [PMID: 20972569 PMCID: PMC3072474 DOI: 10.1007/s00330-010-1993-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2010] [Revised: 08/30/2010] [Accepted: 09/29/2010] [Indexed: 11/28/2022]
Abstract
Purpose To evaluate the effect of the number of readers on the statistical results in peripheral MRA. Materials and methods 40 patients with peripheral arterial occlusive disease were included as a sample dataset in this study, randomly separated into two matched groups with n = 20 patients (group 1—gadobutrol, group 2—gadoterate meglumine) who underwent a continuous table movement MRA of the peripheral vessels at 3 T. Image quality (IQ) of 17 vessel segments was evaluated by 5 independent readers. The effect of the number of readers on significance and statistical power was statistically analyzed. Results Image quality in group 1 (gadobutrol) ranks significantly higher compared to group 2 (gadoterade meglumine) with a diagnostic IQ in 97% vs. 78% (p < 0.0001). For the diagnostic/non-diagnostic IQ assessment significance was reached with one reader 1/5 times (20%), with two readers in 4/10 (40%), with three readers in 6/10 (60%), with four readers in 4/5 (80%), with five readers in 1/1 (100%). Power considerations showed considerable gain when increasing the number of readers. Conclusion Increasing the number of readers in a diagnostic MRA-study can be used to achieve a higher power or to decrease the number of subjects included with maintained statistical validity.
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Affiliation(s)
- M Voth
- Institute of Clinical Radiology and Nuclear Medicine, University Medical Center Mannheim, Medical Faculty Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
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Attenberger UI, Ingrisch M, Büsing K, Reiser M, Schoenberg SO, Fink C. [Magnetic resonance imaging of pulmonary perfusion. Technical requirements and diagnostic impact]. Radiologe 2009; 49:739-47. [PMID: 19626308 DOI: 10.1007/s00117-009-1880-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
With technical improvements in gradient hardware and the implementation of innovative k-space sampling techniques, such as parallel imaging, the feasibility of pulmonary perfusion MRI could be demonstrated in several studies. Dynamic contrast-enhanced 3D gradient echo sequences as used for time-resolved MR angiography have been established as the preferred pulse sequences for lung perfusion MRI. With these techniques perfusion of the entire lung can be visualized with a sufficiently high temporal and spatial resolution. In several trials in patients with acute pulmonary embolism, pulmonary hypertension and airway diseases, the clinical benefit and good correlation with perfusion scintigraphy have been demonstrated. The following review article describes the technical prerequisites, current post-processing techniques and the clinical indications for MR pulmonary perfusion imaging using MRI.
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Affiliation(s)
- U I Attenberger
- Institut für Klinische Radiologie und Nuklearmedizin, Universitätsmedizin Mannheim, Klinikum Mannheim der Universität Heidelberg, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim.
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Reichert M, Henzler T, Krissak R, Clevert DA, Attenberger UI, Nikolaou K, Reiser MF, Schönberg S, Fink C. Gadofosveset-verstärkte MR Venographie bei 3 Tesla: Vergleich der Bildqualität unter Verwendung von 3D FLASH und VIBE Sequenzen. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Linn J, Attenberger UI, Wiesmann M, Brückmann H. Schrankenstörung nach interventioneller Gefäßrekanalisation – Korrelation mit postinterventionellem Infarktausmaß? ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Michaely HJ, Attenberger UI, Fink C, Dietrich O, Schoenberg SO. Einfluss der Gadofosveset-Injektionsgeschwindigkeit auf die Bildqualität der First-Pass MRA. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Michaely HJ, Attenberger UI, Reiser MF, Schoenberg SO. Feasibility of Gadofosveset-Enhanced Steady-State MRA of the Peripheral Vessels at 3 Tesla with Dixon Fat-Saturation. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0028-1124050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Michaely HJ, Attenberger UI, Kramer H, Reiser M, Schönberg SO. Dixon-Fettsättigung für die Steady State MR-Angiographie (MRA) nach Gabe von Gadofosveset (Vasovist®). ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Michaely HJ, Sourbron SP, Attenberger UI, Lodemann KP, Reiser M, Schönberg SO. Zeitliche Anforderungen an MR-Nierenperfusionsmessungen mit dem zwei-Kompartment Model. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Notohamiprodjo M, Glaser C, Attenberger UI, Herrmann KA, Schoenberg SO, Reiser M, Michaely HJ. MR-DTI der Niere mit paralleler Bildgebung – erste klinische Erfahrungen. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Attenberger UI, Michaely HJ, Sourbron SP, Notohamiprodjo M, Lodemann KP, Glaser C, Schoenberg SO. Möglichkeit der Quantifizierung von Nierenfunktionsparametern mit einem semiautomatisierten Zwei-Kompartment Modell – Eine Interobserveranalyse. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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