Ritter, Christian Oliver

[["dc.bibliographiccitation.firstpage","403"],["dc.bibliographiccitation.journal","Textures and microstructures"],["dc.bibliographiccitation.lastpage","408"],["dc.bibliographiccitation.volume","14"],["dc.contributor.author","Heinicke, F."],["dc.contributor.author","Brokmeier, H.-G."],["dc.contributor.author","Dahms, M."],["dc.contributor.author","Bunge, H. J."],["dc.contributor.author","Pannetier, J."],["dc.contributor.author","Ritter, C."],["dc.contributor.author","Wall, H. de"],["dc.date.accessioned","2010-08-21T10:38:40Z"],["dc.date.accessioned","2021-10-27T13:13:48Z"],["dc.date.available","2010-08-21T10:38:40Z"],["dc.date.available","2021-10-27T13:13:48Z"],["dc.date.issued","1991"],["dc.format.mimetype","application/pdf"],["dc.identifier.doi","10.1155/TSM.14-18.403"],["dc.identifier.ppn","593716418"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/4489"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/91808"],["dc.language.iso","en"],["dc.notes.intern","Migrated from goescholar"],["dc.relation.issn","0730-3300"],["dc.relation.orgunit","Fakultät für Geowissenschaften und Geographie"],["dc.rights","Goescholar"],["dc.rights.access","openAccess"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.ddc","550"],["dc.title","Textures of paragneisses from the KTB drilling site, Ne Bavaria (FRG)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","601"],["dc.bibliographiccitation.journal","SpringerPlus"],["dc.bibliographiccitation.volume","3"],["dc.contributor.author","Sohns, Jan Martin"],["dc.contributor.author","Steinmetz, Michael"],["dc.contributor.author","Schneider, Heike"],["dc.contributor.author","Fasshauer, Martin"],["dc.contributor.author","Staab, Wieland"],["dc.contributor.author","Kowallick, Johannes Tammo"],["dc.contributor.author","Schuster, Andreas"],["dc.contributor.author","Ritter, Christian"],["dc.contributor.author","Lotz, Joachim"],["dc.contributor.author","Unterberg-Buchwald, Christina"],["dc.date.accessioned","2018-11-07T09:33:32Z"],["dc.date.available","2018-11-07T09:33:32Z"],["dc.date.issued","2014"],["dc.description.abstract","Introduction: Situs inversus totalis with congenitally corrected transposition of the great arteries represents a relatively rare congenital condition. Case description: The current report describes the case of a 56 year old patient with an atrio-ventricular and ventricular-arterial discordance of the heart chambers without surgical correction, incidentally detected during hepatocellular carcinoma evaluation. The systemic venous blood arrived via the right atrium and a mitral valve in the morphologically left but pulmonary arterial ventricle that gave rise to a pulmonary trunk. The pulmonary venous blood passed the left atrium and the tricuspid valve into a morphologically right but systemic ventricle that gave rise to the aorta. Discussion and evaluation: The switched anatomy was incidentally detected on echocardiography. The patient was referred to cardiac magnetic resonance imaging (CMR) including flow measurements, volumetry and late enhancement. CMR results showed a mildly impaired function and the switched anatomy. During a follow-up period of 2 years the patient was suffering from only mild heart failure and dyspnea. Conclusions: Heart failure symptoms and arrhythmias can appear with increasing age in patients with congenitally corrected transposition. Early CMR allows accurate diagnosis and timely introduction of adequate therapy thereby avoiding disease progression."],["dc.identifier.doi","10.1186/2193-1801-3-601"],["dc.identifier.isi","000359108200001"],["dc.identifier.pmid","25392774"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11150"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/31986"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","2193-1801"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Situs inversus totalis with congenitally corrected transposition of the great arteries: insights from cardiac MRI"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","46"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Intensive Care Medicine Experimental"],["dc.bibliographiccitation.volume","5"],["dc.contributor.author","Cambiaghi, Barbara"],["dc.contributor.author","Vasques, Francesco"],["dc.contributor.author","Mörer, Onnen"],["dc.contributor.author","Ritter, Christian"],["dc.contributor.author","Mauri, Tommaso"],["dc.contributor.author","Kunze-Szikszay, Nils"],["dc.contributor.author","Holke, Karin"],["dc.contributor.author","Collino, Francesca"],["dc.contributor.author","Maiolo, Giorgia"],["dc.contributor.author","Rapetti, Francesca"],["dc.contributor.author","Schulze-Kalthoff, Elias"],["dc.contributor.author","Tonetti, Tommaso"],["dc.contributor.author","Hahn, Günter"],["dc.contributor.author","Quintel, Michael"],["dc.contributor.author","Gattinoni, Luciano"],["dc.date.accessioned","2020-12-10T18:41:24Z"],["dc.date.available","2020-12-10T18:41:24Z"],["dc.date.issued","2017"],["dc.description.abstract","Abstract Background Severe hypoperfusion can cause lung damage. We studied the effects of regional perfusion block in normal lungs and in the lungs that had been conditioned by lavage with 500 ml saline and high V T (20 ml kg−1) ventilation. Methods Nineteen pigs (61.2 ± 2.5 kg) were randomized to five groups: controls (n = 3), the right lower lobe block alone (n = 3), lavage and high V T (n = 4), lung lavage, and high V T plus perfusion block of the right (n = 5) or left (n = 4) lower lobe. Gas exchange, respiratory mechanics, and hemodynamics were measured hourly. After an 8-h observation period, CT scans were obtained at 0 and 15 cmH2O airway pressure. Results Perfusion block did not damage healthy lungs. In conditioned lungs, the left perfusion block caused more edema in the contralateral lung (777 ± 62 g right lung vs 484 ± 204 g left; p < 0.05) than the right perfusion block did (581 ± 103 g right lung vs 484 ± 204 g left; p n.s.). The gas/tissue ratio, however, was similar (0.5 ± 0.3 and 0.8 ± 0.5; p n.s.). The lobes with perfusion block were not affected (gas/tissue ratio right 1.6 ± 0.9; left 1.7 ± 0.5, respectively). Pulmonary artery pressure, PaO2/FiO2, dead space, and lung mechanics were more markedly affected in animals with left perfusion block, while the gas/tissue ratios were similar in the non-occluded lobes. Conclusions The right and left perfusion blocks caused the same “intensity” of edema in conditioned lungs. The total amount of edema in the two lungs differed because of differences in lung size. If capillary permeability is altered, increased blood flow may induce or increase edema."],["dc.identifier.doi","10.1186/s40635-017-0161-2"],["dc.identifier.eissn","2197-425X"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/15183"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/77572"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.intern","Merged from goescholar"],["dc.publisher","Springer"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Effects of regional perfusion block in healthy and injured lungs"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","24"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Journal of Cardiovascular Magnetic Resonance"],["dc.bibliographiccitation.volume","21"],["dc.contributor.author","Backhaus, Sören J."],["dc.contributor.author","Staab, Wieland"],["dc.contributor.author","Steinmetz, Michael"],["dc.contributor.author","Ritter, Christian O."],["dc.contributor.author","Lotz, Joachim"],["dc.contributor.author","Hasenfuß, Gerd"],["dc.contributor.author","Schuster, Andreas"],["dc.contributor.author","Kowallick, Johannes T."],["dc.date.accessioned","2019-07-09T11:51:13Z"],["dc.date.available","2019-07-09T11:51:13Z"],["dc.date.issued","2019"],["dc.description.abstract","Background Cardiovascular magnetic resonance (CMR) represents the clinical gold standard for the assessment of biventricular morphology and function. Since manual post-processing is time-consuming and prone to observer variability, efforts have been directed towards automated volumetric quantification. In this study, we sought to validate the accuracy of a novel approach providing fully automated quantification of biventricular volumes and function in a “real-world” clinical setting. Methods Three-hundred CMR examinations were randomly selected from the local data base. Fully automated quantification of left ventricular (LV) mass, LV and right ventricular (RV) end-diastolic and end-systolic volumes (EDV/ESV), stroke volume (SV) and ejection fraction (EF) were performed overnight using commercially available software (suiteHEART®, Neosoft, Pewaukee, Wisconsin, USA). Parameters were compared to manual assessments (QMass®, Medis Medical Imaging Systems, Leiden, Netherlands). Sub-group analyses were further performed according to image quality, scanner field strength, the presence of implanted aortic valves and repaired Tetralogy of Fallot (ToF). Results Biventricular automated segmentation was feasible in all 300 cases. Overall agreement between fully automated and manually derived LV parameters was good (LV-EF: intra-class correlation coefficient [ICC] 0.95; bias − 2.5% [SD 5.9%]), whilst RV agreement was lower (RV-EF: ICC 0.72; bias 5.8% [SD 9.6%]). Lowest agreement was observed in case of severely altered anatomy, e.g. marked RV dilation but normal LV dimensions in repaired ToF (LV parameters ICC 0.73–0.91; RV parameters ICC 0.41–0.94) and/or reduced image quality (LV parameters ICC 0.86–0.95; RV parameters ICC 0.56–0.91), which was more common on 3.0 T than on 1.5 T. Conclusions Fully automated assessments of biventricular morphology and function is robust and accurate in a clinical routine setting with good image quality and can be performed without any user interaction. However, in case of demanding anatomy (e.g. repaired ToF, severe LV hypertrophy) or reduced image quality, quality check and manual re-contouring are still required."],["dc.format.extent","13"],["dc.identifier.doi","10.1186/s12968-019-0532-9"],["dc.identifier.pmid","31023305"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16076"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59900"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.publisher","BioMed Central"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Fully automated quantification of biventricular volumes and function in cardiovascular magnetic resonance: applicability to clinical routine settings"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","45"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance"],["dc.bibliographiccitation.volume","19"],["dc.contributor.author","Unterberg-Buchwald, Christina"],["dc.contributor.author","Ritter, Christian Oliver"],["dc.contributor.author","Reupke, Verena"],["dc.contributor.author","Wilke, Robin Niklas"],["dc.contributor.author","Stadelmann, Christine"],["dc.contributor.author","Steinmetz, Michael"],["dc.contributor.author","Schuster, Andreas"],["dc.contributor.author","Hasenfuß, Gerd"],["dc.contributor.author","Lotz, Joachim"],["dc.contributor.author","Uecker, Martin"],["dc.date.accessioned","2018-01-17T13:54:25Z"],["dc.date.available","2018-01-17T13:54:25Z"],["dc.date.issued","2017"],["dc.description.abstract","Endomyocardial biopsies (EMB) are an important diagnostic tool for myocarditis and other infiltrative cardiac diseases. Routinely, biopsies are obtained under fluoroscopic guidance with a substantial radiation burden. Despite procedural success, there is a large sampling error caused by missing the affected myocardium. Therefore, multiple (>6) biopsies are taken in the clinical setting. In cardiovascular magnetic resonance (CMR), late gadolinium enhancement (LGE) depicts areas of affected myocardium in myocarditis or in other infiltrative cardiomyopathies. Thus, targeted biopsy under real-time CMR image guidance might reduce the problem of sampling error."],["dc.identifier.doi","10.1186/s12968-017-0357-3"],["dc.identifier.pmid","28424090"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14414"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/11738"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.relation.eissn","1532-429X"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Targeted endomyocardial biopsy guided by real-time cardiovascular magnetic resonance"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]