Search

Your search keyword '"Greiser, Andreas"' showing total 675 results
Start Over Author "Greiser, Andreas"

Refine your results

675 results on '"Greiser, Andreas"'

3. Dental-dedicated MRI, a novel approach for dentomaxillofacial diagnostic imaging: technical specifications and feasibility

Author

Greiser, Andreas, primary, Christensen, Jennifer, additional, Fuglsig, João M C S, additional, Johannsen, Katrine M, additional, Nixdorf, Donald R, additional, Burzan, Kim, additional, Lauer, Lars, additional, Krueger, Gunnar, additional, Hayes, Carmel, additional, Kettless, Karen, additional, Ulrici, Johannes, additional, and Spin-Neto, Rubens, additional

Published
2023
Full Text
View/download PDF

6. Non-contrast-enhanced magnetic resonance imaging for visualization and quantification of endovascular aortic prosthesis, their endoleaks and aneurysm sacs at 1.5 T

Author

Salehi Ravesh, Mona, Langguth, Patrick, Pfarr, Julian Andreas, Schupp, Jasper, Trentmann, Jens, Koktzoglou, Ioannis, Edelman, Robert R., Graessner, Joachim, Greiser, Andreas, Hautemann, David, Hennemuth, Anja, Both, Marcus, Jansen, Olav, Hövener, Jan-Bernd, and Schäfer, Jost Philipp

Published
2019
Full Text
View/download PDF

12. Dental-dedicated MRI, a novel approach for dentomaxillofacial diagnostic imaging: technical specifications and feasibility.

Author

Greiser, Andreas, Christensen, Jennifer, Fuglsig, João M C S, Johannsen, Katrine M, Nixdorf, Donald R, Burzan, Kim, Lauer, Lars, Krueger, Gunnar, Hayes, Carmel, Kettless, Karen, Ulrici, Johannes, and Spin-Neto, Rubens

Subjects
TECHNICAL specifications, DIAGNOSTIC imaging, MAGNETIC resonance imaging, MEDICAL equipment design, BRAIN imaging
Abstract

MRI is a noninvasive, ionizing radiation-free imaging modality that has become an indispensable medical diagnostic method. The literature suggests MRI as a potential diagnostic modality in dentomaxillofacial radiology. However, current MRI equipment is designed for medical imaging (eg, brain and body imaging), with general-purpose use in radiology. Hence, it appears expensive for dentists to purchase and maintain, besides being complex to operate. In recent years, MRI has entered some areas of dentistry and has reached a point in which it can be provided following a tailored approach. This technical report introduces a dental-dedicated MRI (ddMRI) system, describing how MRI can be adapted to fit dentomaxillofacial radiology through the appropriate choice of field strength, dental radiofrequency surface coil, and pulse sequences. Also, this technical report illustrates the possible application and feasibility of the suggested ddMRI system in some relevant diagnostic tasks in dentistry. Based on the presented cases, it is fair to consider the suggested ddMRI system as a feasible approach to introducing MRI to dentists and dentomaxillofacial radiology specialists. Further studies are needed to clarify the diagnostic accuracy of ddMRI considering the various diagnostic tasks relevant to the practice of dentistry. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

13. Fully-automated left ventricular mass and volume MRI analysis in the UK Biobank population cohort: evaluation of initial results

Author

Suinesiaputra, Avan, Sanghvi, Mihir M., Aung, Nay, Paiva, Jose Miguel, Zemrak, Filip, Fung, Kenneth, Lukaschuk, Elena, Lee, Aaron M., Carapella, Valentina, Kim, Young Jin, Francis, Jane, Piechnik, Stefan K., Neubauer, Stefan, Greiser, Andreas, Jolly, Marie-Pierre, Hayes, Carmel, Young, Alistair A., and Petersen, Steffen E.

Published
2018
Full Text
View/download PDF

22. Low-Rank and Sparse Matrix Decomposition for Compressed Sensing Reconstruction of Magnetic Resonance 4D Phase Contrast Blood Flow Imaging (LoSDeCoS 4D-PCI)

Author

Hutter, Jana, Schmitt, Peter, Aandal, Gunhild, Greiser, Andreas, Forman, Christoph, Grimm, Robert, Hornegger, Joachim, Maier, Andreas, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Mori, Kensaku, editor, Sakuma, Ichiro, editor, Sato, Yoshinobu, editor, Barillot, Christian, editor, and Navab, Nassir, editor

Published
2013
Full Text
View/download PDF

23. Prior-Based Automatic Segmentation of the Carotid Artery Lumen in TOF MRA (PASCAL)

Author

Hutter, Jana, Hofmann, Hannes G., Grimm, Robert, Greiser, Andreas, Saake, Marc, Hornegger, Joachim, Dörfler, Arnd, Schmitt, Peter, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Ayache, Nicholas, editor, Delingette, Hervé, editor, Golland, Polina, editor, and Mori, Kensaku, editor

Published
2012
Full Text
View/download PDF

24. Accurate Regression-Based 4D Mitral Valve Surface Reconstruction from 2D+t MRI Slices

Author

Vitanovski, Dime, Tsymbal, Alexey, Ionasec, Razvan Ioan, Schmidt, Michaela, Greiser, Andreas, Mueller, Edgar, Lu, Xiaoguang, Funka-Lea, Gareth, Hornegger, Joachim, Comaniciu, Dorin, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Suzuki, Kenji, editor, Wang, Fei, editor, Shen, Dinggang, editor, and Yan, Pingkun, editor

Published
2011
Full Text
View/download PDF

35. Magnetic Resonance Fusion Imaging of Chronic Myocardial Ischemia

Author

Nahrendorf, M., Hiller, K.-H., Greiser, Andreas, Köhler, Sascha, Neuberger, Thomas, Hu, K., Waller, C., Ertl, G., Haase, A., Bauer, W. R., Goos, Gerhard, editor, Hartmanis, Juris, editor, van Leeuwen, Jan, editor, Magnin, Isabelle E., editor, Montagnat, Johan, editor, Clarysse, Patrick, editor, Nenonen, Jukka, editor, and Katila, Toivo, editor

Published
2003
Full Text
View/download PDF

42. Assessment of diastolic dysfunction: comparison of different cardiovascular magnetic resonance techniques

Author

Kermer, Josephine, Traber, Julius, Utz, Wolfgang, Hennig, Pierre, Menza, Marius, Jung, Bernd, Greiser, Andreas, Barckow, Philipp, Knobelsdorff‐Brenkenhoff, Florian von, Töpper, Agnieszka, Blaszczyk, Edyta, and Schulz‐Menger, Jeanette

Subjects
Magnetic Resonance Spectroscopy, Myocardial deformation, 610 Medicine & health, Ventricular Dysfunction, Left, Heart failure with preserved ejection fraction, Cardiovascular and Metabolic Diseases, Diastole, Echocardiography, Left atrium, RC666-701, Humans, Diastolic dysfunction, Diseases of the circulatory (Cardiovascular) system, Cardiovascular magnetic resonance, Heart Atria, 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit, Tissue tracking
Abstract

Aims: Heart failure with preserved ejection fraction is still a diagnostic and therapeutic challenge, and accurate non-invasive diagnosis of left ventricular (LV) diastolic dysfunction (DD) remains difficult. The current study aimed at identifying the most informative cardiovascular magnetic resonance (CMR) parameters for the assessment of LVDD. Methods and results: We prospectively included 50 patients and classified them into three groups: with DD (DD+, n = 15), without (DD-, n = 26), and uncertain (DD ��, n = 9). Diagnosis of DD was based on echocardiographic E/E', invasive LV end-diastolic pressure, and N-terminal pro-brain natriuretic peptide. CMR was performed at 1.5 T to assess LV and left atrial (LA) morphology, LV diastolic strain rate (SR) by tissue tracking and tagging, myocardial peak velocities by tissue phase mapping, and transmitral inflow profile using phase contrast techniques. Statistics were performed only on definitive DD+ and DD- (total number 41). DD+ showed enlarged LA with LA end-diastolic volume/height performing best to identify DD+ with a cut-off value of ��� 0.52 mL/cm (sensitivity = 0.71, specificity = 0.84, and area under the receiver operating characteristic curve = 0.75). DD+ showed significantly reduced radial (inferolateral E peak: DD-: -14.5 �� 6.5%/s vs. DD+: -10.9 �� 5.9%/s, P = 0.04; anterolateral A peak: DD-: -4.2 �� 1.6%/s vs. DD+: -3.1 �� 1.4%/s, P = 0.04) and circumferential (inferolateral A peak: DD-: 3.8 �� 1.2%/s vs. DD+: 2.8 �� 0.8%/s, P = 0.007; anterolateral A peak: DD-: 3.5 �� 1.2%/s vs. DD+: 2.5 �� 0.8%/s, P = 0.048) SR in the basal lateral wall assessed by tissue tracking. In the same segments, DD+ showed lower peak myocardial velocity by tissue phase mapping (inferolateral radial peak: DD-: -3.6 �� 0.7 ms vs. DD+: -2.8 �� 1.0 ms, P = 0.017; anterolateral longitudinal peak: DD-: -5.0 �� 1.8 ms vs. DD+: -3.4 �� 1.4 ms, P = 0.006). Tagging revealed reduced global longitudinal SR in DD+ (DD-: 45.8 �� 12.0%/s vs. DD+: 34.8 �� 9.2%/s, P = 0.022). Global circumferential and radial SR by tissue tracking and tagging, LV morphology, and transmitral flow did not differ between DD+ and DD-. Conclusions: Left atrial size and regional quantitative myocardial deformation applying CMR identified best patients with DD.

Published
2020

Catalog

Books, media, physical & digital resources
See catalog results