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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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Hahn D, Brzank P, Blättner B. Konzeption einer wissenschaftlichen Begleitung für ein Modellprojekt zum Umgang gewaltbetroffener Frauen in der ambulanten Versorgung. DAS GESUNDHEITSWESEN 2008. [DOI: 10.1055/s-0028-1086413] [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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Ritter C, Weininger M, Machann M, Beissert M, Hahn D, Kenn W. Non-invasive imaging in a rare case of main pulmonary artery aneurysm. Respir Med 2008; 102:790-2. [DOI: 10.1016/j.rmed.2007.10.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2007] [Accepted: 10/16/2007] [Indexed: 11/28/2022]
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Ritter C, Beer M, Weidemann F, Strotmann J, Müllges W, Mohr FW, Ertl G, Hahn D, Bauersachs J. [Large left ventricular aneurysm after silent myocardial infarction. Documentation by serial non-invasive imaging]. Dtsch Med Wochenschr 2008; 133:633-5. [PMID: 18351506 DOI: 10.1055/s-2008-1067296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
HISTORY AND CLINICAL FINDINGS A 60-year-old man had a workup for atypical angina. Noninvasive investigations, including computed tomography, showed no evidence for coronary artery disease. A few months later the patient was hospitalized because of severe epileptic seizures. Thyrotoxicosis was diagnosed and emergency thyroidectomy was performed. Two months after discharge the patient was again referred because of exercise-induced angina pectoris. INVESTIGATIONS AND DIAGNOSIS Echocardiography and cardiac magnetic resonance imaging (MRI) showed a large aneurysm of the lateral wall of the left ventricle with a thrombus adhering to the wall. Coronary angiography and levocardiography confirmed the aneurysm and detected an occlusion of the distal part of the circumflex artery. TREATMENT AND COURSE Surgical aneurysm resection with thrombectomy and endoventricular circular plasty (Dor procedure) was performed without postoperative complications. Six months after surgery the patient was in good general condition without any angina. Follow-up echocardiography as well as cardiac MRI gave proof of an excellent postoperative result. CONCLUSIONS Noninvasive preoperative diagnosis and documentation as well as postoperative monitoring with modern imaging modalities, such as echocardiography and MRI are of great value in patients with left ventricular aneurysm.
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Weininger M, Gerharz E, Lopau K, Pabst T, Kenn W, Riedmiller H, Hahn D, Beissert M. [MRI after renal transplantation with dysfunctional allograft: are there typical diagnoses in the early and late postoperative phases?]. Aktuelle Urol 2008; 39:135-40. [PMID: 18379967 DOI: 10.1055/s-2007-980140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
PURPOSE The aim of this study was to evaluate the different MRI diagnoses in the early and late post-operative period after renal transplantation with dysfunctional allograft. MATERIALS AND METHODS Due to unknown transplant dysfunction, 49 patients (30-male, 19 female) received a total of 74 MRI studies. According to the date of examination all MRI studies were divided in an early (< or = 60 days, ETP) and a late post-transplant time period (> 60 days, LTP). All MRI studies were performed on 1.5 T MRI systems using a standardised imaging protocol consisting of a morphological (pre- and post-contrast enhanced T (1)- and T (2)-weighted TSE sequences), a vascular (contrast-enhanced 3D MRA) and a urographical part (Flash 3D sequences). Frequencies of diagnoses in ETP and LTP, and diagnoses within each transplant time period were analysed. RESULTS 44/74 MRI studies were performed in ETP, 30/74 in LTP. In total 80 diagnoses were obtained: Renal artery stenosis (ETP, n = 21; LTP, n = 5), renal vein stenosis (ETP, n = 2), renal vein thrombosis (ETP, n = 2), renal perfusion defect (ETP, n = 11), rejection (ETP, n = 1; LTP, n = 2), abscess (ETP, n = 1), urinary outflow obstruction (LTP, n = 4), without MRI pathology (ETP, n = 11; LTP, n = 20). Renal artery stenosis was the most prevalent diagnosis in ETP, and a more frequent finding in ETP compared to LTP (p < 0.05). Renal perfusion defects were more frequent in ETP than in LTP (p < 0.05). In the ETP vascular diseases (34/49 diagnoses) were more frequent (p < 0.05) than uropathological diseases (0/49 diagnoses). CONCLUSIONS Our results indicate that vascular diseases are a more frequent occurrence in the early post-operative course after renal transplantation than uropathological diseases. However, a transplant follow-up MRI study needs to contain a morphological, vascular and functional imaging part to answer combined clinical questions.
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Hahn D. [The influence of gender in health and illness. Theoretical approaches, historic outline and institutionalisation of equal opportunities]. Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz 2008; 51:61-9. [PMID: 18185970 DOI: 10.1007/s00103-008-0420-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The aims of this article are to illustrate how the discussion on inclusion of the social category gender has changed, which theoretical concepts determine this discussion and to which extent an institutionalisation has taken place with the objective of reducing gender-specific discrimination in the areas of health care as well as health sciences. To show this, in the first section three theoretical concepts will be explained which allow the meaning of gender as a central social category to be understood. These three concepts are (1) approaches to analyse gender as a social structural category, (2) social-constructivist approaches and (3) approaches that deal with symbolic-discursive orders. The second section presents an historic outline of female and gender-specific health sciences over the last 30 years with its different phases of discussion, especially regarding the process of the inclusion of gender in research work on health. The final third section relates the methodological thoughts deducted from the theoretical concepts as well as the historic discussion, resulting in the concepts of "gender bias" to the action-orientated approach of "gender mainstreaming".
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Weng A, Ritter CO, Lotz J, Beer M, Hahn D, Köstler H. Erstellung von Perfusionskarten bei Herz-MR-Perfusionsuntersuchungen. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073530] [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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Stenzel MS, Stöppler AS, Girschick HG, Beer M, Hahn D, Speer CS. MRT und Ganzkörper-MRT zur Verlaufskontrolle bei chronisch rezividierender multifokaler Osteomyelitis (CRMO) bei Kindern und Jugendlichen. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073449] [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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Goltz JP, Stamm H, Weng A, Ritter C, Hahn D, Koestler H, Beer M. Bestimmung kardialer Funktionsparameter mittels Multislice-MRT in freier Atmung. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073491] [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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135
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Gutberlet MA, Hahn D, Köstler H. Virtuelle Spulendekonvolutionstechnik für die dichtegewichtete Bildgebung (VIDED). ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073570] [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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Oechsner M, Stäb D, Pracht ED, Jakob PM, Köstler H, Hahn D, Beer M. Sauerstoffgestützte T2* Bildgebung der menschlichen Lunge bei 0.2 Tesla. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073589] [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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Ritter CO, del Savio K, Brackertz A, Beer M, Hahn D, Köstler H. [High-resolution MRI for the quantitative evaluation of subendocardial and subepicardial perfusion under pharmacological stress and at rest]. ROFO-FORTSCHR RONTG 2007; 179:945-52. [PMID: 17705117 DOI: 10.1055/s-2007-963350] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
PURPOSE MR stress perfusion imaging of the heart allows the quantification of myocardial perfusion and the evaluation of myocardial perfusion reserve (MPR) and the ratio of subendocardial to subepicardial perfusion at rest and under adenosine stress. The aim of this study was to evaluate a high-resolution GRAPPA sequence for quantitative MR first pass perfusion imaging in healthy volunteers. MATERIALS AND METHODS First pass stress and rest perfusion studies were performed on 10 healthy volunteers using a 1.5 T MR scanner with a multislice SR-TrueFISP first pass perfusion sequence with a GRAPPA algorithm (acceleration factor 3) in prebolus technique and an image resolution of 1.8 x 1.8 mm. For the comparison group, we examined 12 different healthy volunteers with a standard first pass perfusion SR-TrueFISP sequence using a resolution of 2.7 x 3.3 mm. Myocardial contours were manually delineated followed by an automatic division of the myocardium into two rings with an equal thickness for the subendo- and subepicardial layer. Eight sectors per slice were evaluated using contamination and baseline correction. RESULTS Using the GRAPPA sequence, the ratio of subendo- to subepimyocardial perfusion was 1.18 +/- 0.32 for the examination at rest. Under pharmacologically induced stress, the ratio was 1.08 +/- 0.27. For the standard sequence the ratio was 1.15 +/- 0.28 at rest and 1.11 +/- 0.33 under stress. For the high resolution sequence higher mean values for the subendo- to subepimyocardial ratio were obtained with comparable standard deviations. The difference between the sequences was not significant. CONCLUSION The evaluation of subendomyocardial and subepimyocardial perfusion is feasible with a high-resolution first pass perfusion sequence. The use of a higher resolution to avoid systematic error leads to increased image noise. However, no relevant reduction in the quantitative perfusion values under stress and at rest was able to be depicted.
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Beer M, Buchner S, Wirbelauer J, Fuchs J, Machann W, Ritter CO, Beissert M, Darge K, Hahn D, Köstler H. MR-Bildgebung und MR-Spektroskopie zur Charakterisierung von Kardiomyopathien bei Jugendlichen - erste Ergebnisse. ROFO-FORTSCHR RONTG 2007; 179:932-7. [PMID: 17705115 DOI: 10.1055/s-2007-963302] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
PURPOSE Cardiomyopathy is a rare but life-threatening disease in children and adolescents. Recent studies reported morphological, functional or metabolic alterations of the heart. We discuss a combined MR imaging and (31)P MR spectroscopy (MRS) protocol allowing the analysis of interdependencies between these parameters. Since normal values of cardiac MR parameters in this age group are not available, we included studies of age-matched healthy adolescents. MATERIALS AND METHODS 2D-CINE was used to assess left ventricular (LV) parameters. Additional 3D-Chemical Shift Imaging (3D-CSI) and Spectral Localization with Optimal Pointspread Function (SLOOP) reconstruction allowed quantification of the cardiac energy metabolism. Patients (n = 4; all male; age 16.8 +/- 2.9 years) were included on the basis of an echocardiographic diagnosis of possible cardiomyopathy. The same protocol was applied to healthy young volunteers (n = 4; 1 female, 3 male; age 15.5 +/- 0.6 years). RESULTS The patients had a significantly higher LV mass index compared to the control group (147 +/- 41 g/m (2) versus 97 +/- 16 g/m2; p = 0.04). The other LV parameters (including LV EF with 59 +/- 22 % versus 67 +/- 10 %) showed no significant differences. The phosphocreatine to adenosine triphosphate ratio (PCr/ATP-ratio) of the patients was reduced to 1.71 +/- 0.40 versus 2.44 +/- 0.30 (p = 0.01), combined with a tendency towards decreased PCr concentrations of 9.1 +/- 2.5 versus 7.9 +/- 1.0 mmol/kg. CONCLUSION The combination of (31)P MR spectroscopy and MR imaging allows quantitative determination of morphologic, functional and metabolic alterations in adolescents with suspected cardiomyopathy in one examination procedure. The reduction of energy metabolism combined with unaltered global function may indicate a primary role of metabolism in the pathogenesis of cardiomyopathies in adolescents.
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Weininger M, Ritter CO, Beer M, Hahn D, Beissert M. Bestimmung des koronaren Kalzium-Scores mittels 64-Zeilen-CT - Variabilität der Scores und Einfluss des Rekonstruktionszeitpunktes. ROFO-FORTSCHR RONTG 2007; 179:938-44. [PMID: 17705116 DOI: 10.1055/s-2007-963296] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
PURPOSE To evaluate the variability of coronary calcium scores depending on the image reconstruction interval using a 64-slice CT scanner. MATERIALS AND METHODS 30 patients (18 male, 12 female; mean age 57 +/- 9 yrs; mean heart rate 66 +/- 10 bpm) underwent coronary calcium scoring using a 64-slice CT scanner (Somatom Sensation 64, Siemens Medical Solutions, Erlangen) and a standardized scanning protocol. Oral beta-blockers were administered to 12 patients with a baseline heart rate > 70 bpm. Images were reconstructed in 10 % increments from 10 - 100 % of the RR interval. Two blinded experienced observers independently calculated Agatston (AS), calcium mass (MS) and volume scores (VS) for every reconstructed image series. The results were compared to similar studies for 16-slice CT scanners. RESULTS The mean values and mean coefficients of variation among all patients were as follows: AS, 397 +/- 829, 109 % MS, 88 +/- 225, 154 % VS, 335 +/- 669, 100 %. Regarding the reconstruction intervals, the mean coefficients of variation were as follows: 107 % (AS), 97 % (VS), 116 % (MS). No specific image reconstruction interval with statistically significant lower variability for each score could be identified. High inter-observer agreement was achieved (K = 0.98). With statistical significance (p < 0.05) 10/30 patients (pts) were able to be allocated to more than one risk group (RG): 6 pts = 2 RG; 3 pts = 3 RG; 1 pts = 4 RG. The scores for 5/30 patients were zero for at least one reconstruction interval, but further reconstructions revealed calcifications. The number of patients assignable to different risk groups was significantly lower compared to published data using a 16-slice scanner (p < 0.05). CONCLUSION Coronary calcium scores determined using a 64-slice scanner display a wide range of variability depending on the image reconstruction interval as already described for 16-slice CT scanners. However, compared to previous studies, our data indicate that this vendor's generation of scanners reduces the influence of score variations on the risk stratification.
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Weininger M, Ritter C, Beer M, Hahn D, Beissert M. Evaluation of the optimal image reconstruction interval for coronary artery imaging using 64-slice computed tomography. Acta Radiol 2007; 48:620-7. [PMID: 17611868 DOI: 10.1080/02841850701348697] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
BACKGROUND Cardiac computed tomography (CT) has become an established complement in cardiac imaging. Thus, optimized image quality is diagnostically crucial. PURPOSE To prospectively evaluate whether, by using 64-slice CT, a specific reconstruction interval can be identified providing best image quality for all coronary artery segments and each individual coronary artery. MATERIAL AND METHODS 311 coronary segments of 14 men and seven women were analyzed using 64-slice CT. Data reconstruction was performed in 5% increments from 5-100% of the R-R interval. Four experienced observers independently evaluated image quality of the coronary arteries according to the AHA classification. A three-point ranking scale was applied: 1, very poor, no evaluation possible; 2, diagnostically sufficient quality; 3, highest image quality, no artifacts. RESULTS The best reconstruction point for all segments was found to be 65% of the R-R interval (mean value 2.4+/-0.5; P<0.05). On a per-artery basis, best image quality was again achieved at 65% of the R-R interval: RCA 2.2+/-0.4, LCA 2.4+/-0.5, LM 2.5+/-0.2, LAD 2.3+/-0.4, LCX 2.3+/-0.5. CONCLUSION By using 64-slice CT, the need for adjusting the reconstruction point to each coronary segment might be overcome. Best image quality was achieved with image reconstruction at 65% of the R-R interval for all coronary segments as well as each coronary artery.
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Zhang C, Smirnov A, Hahn D, Grebel H. Surface enhanced Raman scattering of biospecies on anodized aluminum oxide films. Chem Phys Lett 2007. [DOI: 10.1016/j.cplett.2007.04.041] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Verta MJ, Schneider JR, Alonzo M, Hahn D. Percutaneous viabahn-assisted subintimal recanalization (VASIR) for severe femoropopliteal occlusive disease. Acta Chir Belg 2007; 107:181-6. [PMID: 17515268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
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143
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Moerman CJ, Haafkens JA, Söderström M, Rásky E, Maguire P, Maschewsky-Schneider U, Norstedt M, Hahn D, Reinerth H, McKevitt N. Gender equality in the work of local research ethics committees in Europe: a study of practice in five countries. JOURNAL OF MEDICAL ETHICS 2007; 33:107-12. [PMID: 17264199 PMCID: PMC2598229 DOI: 10.1136/jme.2005.015206] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
BACKGROUND Funding organisations and research ethics committees (RECs) should play a part in strengthening attention to gender equality in clinical research. In the research policy of European Union (EU), funding measures have been taken to realise this, but such measures are lacking in the EU policy regarding RECs. OBJECTIVE To explore how RECs in Austria, Germany, Ireland, The Netherlands and Sweden deal with gender equality issues by asking two questions: (1) Do existing procedures promote representation of women and gender expertise in the committee? (2) How are sex and gender issues dealt with in protocol evaluation? METHODS Two RECs were selected from each country. Data were obtained through interviews with key informants and content analysis of relevant documents (regulations, guidelines and review tools in use in 2003). RESULTS All countries have rules (mostly informal) to ensure the presence of women on RECs; gender expertise is not required. Drug study protocols are carefully evaluated, sometimes on a formal basis, as regards the inclusion of women of childbearing age. The reason for excluding either one of the sexes or including specific groups of women or making a gender-specific risk-benefit analysis are investigated by some RECs. Such measures are, however, neither defined in the regulations nor integrated in review tools. CONCLUSIONS The RECs investigated in five European member states are found to pay limited attention to gender equality in their working methods and, in particular in protocol evaluation. Policy and regulations of EU are needed to strengthen attention to gender equality in the work of RECs.
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Bernhardt J, Oechsner M, Jakob P, Koestler H, Hahn D, Darge K, Hebestreit H, Beer M. Etablierung und klinische Anwendung optimierter GRE-Sequenzen zum Nachweis Mukoviszidose-assoziierter pulmonaler Veränderungen bei Kindern und Jugendlichen an einem offenen 0,2T MR-Tomographen. ROFO-FORTSCHR RONTG 2007. [DOI: 10.1055/s-2007-976913] [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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145
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Geier O, Heidemann R, Hahn D, Köstler H. Schnelle GRAPPA-Rekonstruktion für PLANED (Parallele Aufnahme zur effektiven dichte-gewichteten) Bildgebung. ROFO-FORTSCHR RONTG 2007. [DOI: 10.1055/s-2007-976819] [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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146
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Weng A, Wilke A, Ritter C, Wichmann T, Lotz J, Hahn D, Beer M, Köstler H. Vergleich von automatischer und manueller Segmentierung zur quantitativen Bestimmung der Perfusion des menschlichen Herzens in der MRT. ROFO-FORTSCHR RONTG 2007. [DOI: 10.1055/s-2007-977006] [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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147
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Oechsner M, Stäb D, Jakob P, Arnold JF, Köstler H, Pabst T, Hahn D, Beer M. Funktionelle Lungenbildgebung mit MRT bei 0.2 Tesla unter Verwendung von Kontrastmittel und Sauerstoff. ROFO-FORTSCHR RONTG 2007. [DOI: 10.1055/s-2007-977059] [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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148
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Gutberlet M, Hahn D, Geier O, Köstler H. Dichtegewichtete Akquisition für SNR optimierte Rekonstruktion von Saturation Recovery Sequenzen. ROFO-FORTSCHR RONTG 2007. [DOI: 10.1055/s-2007-976818] [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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149
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Weininger M, Beissert M, Oechsner M, Jakob P, Köstler H, Hahn D, Beer M. Quantitative Perfusionsmessung an der gesunden Lunge mittels kontrastverstärkter MRT. ROFO-FORTSCHR RONTG 2007. [DOI: 10.1055/s-2007-976823] [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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150
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Weininger M, Lauterbach B, Kenn W, Knop S, Hahn D, Beissert M. Ganzkörper-MRT bei Patienten mit multiplem Myelom: Vergleich verschiedener MRT-Sequenzen zur Beurteilung unterschiedlicher Befallsmuster. ROFO-FORTSCHR RONTG 2007. [DOI: 10.1055/s-2007-977096] [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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