Results 61 to 70 of about 43,651 (248)

Analysis of Upper Airway Morphology Using Four‐Dimensional Dynamic MRI With Active Deep Learning‐Based Automatic Segmentation

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Upper‐airway morphology changes during breathing can be captured with cine 4D MRI. Active‐learning nnU‐Net reduces manual labeling while maintaining accuracy. Purpose For automatic upper airway segmentation on free‐breathing cine 4D MRI using active learning and quantifying dynamic changes under two mouth positions.
Cheng‐Yang Yu, Meng‐Chen Chung, Yunn‐Jy Chen, Han‐Wei Wang, Jonathan X. Zhou, Shih‐Lung Chen, Kevin T. Chen, Tiffany Ting‐Fang Shih   +7 more
wiley   +1 more source

Fast Phase-Contrast Cine MRI for Assessing Intracranial Hemodynamics and Cerebrospinal Fluid Dynamics

Diagnostics, 2020
We propose fast phase-contrast cine magnetic resonance imaging (PC-cine MRI) to allow breath-hold acquisition, and we compared intracranial hemo- and hydrodynamic parameters obtained during breath holding between full inspiration and end expiration. On a
Naoki Ohno, Tosiaki Miyati, Tomohiro Noda, Noam Alperin, Takashi Hamaguchi, Masako Ohno, Tatsuhiko Matsushita, Mitsuhito Mase, Toshifumi Gabata, Satoshi Kobayashi   +9 more
doaj   +1 more source

Cardiac MR Fingerprinting at 0.55T Using a Deep Image Prior for Joint T1, T2, and M0 Mapping

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background 0.55T systems offer unique advantages and may support expanded access to cardiac MRI. Purpose To assess the feasibility of 0.55T cardiac MR Fingerprinting (MRF), leveraging a deep image prior reconstruction to mitigate noise. Study Type Phantom and prospective in vivo assessment.
Zhongnan Liu, Zexuan Liu, Imran Rashid, Mauricio Stanzione Galizia, Christopher Scoma, William Truesdell, Prachi Agarwal, Nicole Seiberlich, Liyue Shen, Jesse Hamilton   +9 more
wiley   +1 more source

New workflow and motion analysis for gastric mucosa-associated lymphoid tissue lymphoma on a 1.5-T MR-Linac

Technical Innovations & Patient Support in Radiation Oncology
We developed and evaluated a multiplane cine magnetic resonance imaging (MRI) workflow for magnetic resonance (MR)-guided online adaptive radiation therapy (MRgOART) for gastric mucosa-associated lymphoid tissue (MALT) lymphoma.
Masato Tsuneda, Kota Abe, Yukinao Abe, Yohei Ikeda, Asuka Kodate, Aki Kanazawa, Makoto Saito, Rintaro Harada, Miho Watanabe, Takashi Uno   +9 more
doaj   +1 more source

Strain‐encoded magnetic resonance: a method for the assessment of myocardial deformation

ESC Heart Failure, 2019
This study aims to assess the usefulness of strain‐encoded magnetic resonance (SENC) for the quantification of myocardial deformation (‘strain’) in healthy volunteers and for the diagnostic workup of patients with different cardiovascular pathologies ...
Grigorios Korosoglou, Sorin Giusca, Nina P. Hofmann, Amit R. Patel, Tomas Lapinskas, Burkert Pieske, Henning Steen, Hugo A. Katus, Sebastian Kelle   +8 more
doaj   +1 more source

Late gadolinium uptake demonstrated with magnetic resonance in patients where automated PERFIT analysis of myocardial SPECT suggests irreversible perfusion defect

BMC Medical Imaging, 2008
Background Myocardial perfusion single photon emission computed tomography (MPS) is frequently used as the reference method for the determination of myocardial infarct size.
Ahlander Britt-Marie, Björklund Per-Gunnar, Ohlsson Jan L, Blomstrand Peter, Rosendahl Lene, Starck Sven-Åke, Engvall Jan E   +6 more
doaj   +1 more source

Efficient and Motion Correction-Free Myocardial Perfusion Segmentation in Small MRI Data Using Deep Transfer Learning From Cine Images: A Promising Framework for Clinical Implementation

IEEE Access, 2023
Perfusion cardiovascular magnetic resonance imaging is used to quantify the heart’s blood flow, which requires the segmentation of the myocardium, a laborious task. Deep learning-based methods, the most accurate to accomplish this task, still rely
German Garcia-Jara, Angel Jimenez-Molina, Esteban Reyes, Nicolas Tapia-Rivas, Cristobal Ramos-Gomez, Jose De Grazia, Matias Sepulveda   +6 more
doaj   +1 more source

MRI of the lung (3/3)-current applications and future perspectives [PDF]

, 2011
BACKGROUND: MRI of the lung is recommended in a number of clinical indications. Having a non-radiation alternative is particularly attractive in children and young subjects, or pregnant women.
A Hebestreit, A Kluge, A Kluge, A Kluge, AA Bankier, AC Henderson, AS Brody, BJ Pichler, BJ Pichler, C Fink, C Hintze, C Hintze, C Rieger, CA Yi, CA Yi, CP Heussel, DM Mannino, F Molinari, F Risse, F Santamaria, G Antoch, G Antoch, G Bauman, G Bauman, G Lutterbey, G Lutterbey, G Sergiacomi, H Hatabu, H Zaidi, HF Wehrl, HK Song, HK Song, IL Theissen, J Biederer, J Biederer, J Biederer, J Biederer, J Biederer, J Biederer, J Biederer, J Ley-Zaporozhan, J Ley-Zaporozhan, JC Hogg, K Cederlund, K Sandek, K Suga, K Suga, LP Qi, M Bhalla, M Decramer, M Eichinger, M Gaeta, M Oudkerk, M Puderbach, M Puderbach, M Puderbach, M Puderbach, M Stern, M Wagner, MD Cohen, ND Abolmaali, NJ Morrison, NL Müller, O Ratib, PA Jong de, PA Jong de, PD Stein, PD Stein, R Eibel, R Failo, RE Jacob, RG McFadden, RJ Theilmann, RL Gibson, S Akata, S Montella, S Pauls, SK Alford, T Amundsen, T Iwasawa, T Iwasawa, T Iwasawa, T Mori, T Rupprecht, TA Kuder, TH Helbich, US Euler, V Peltola, W Hirsch, W Lin, Y Berthezène, Y Ohba, Y Ohno, Y Ohno, Y Ohno, Y Ohno, Y Shao   +96 more
core   +1 more source

Quantitative Real‐Time MRI for the Assessment of Gastric Motility

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Current reference standards for measuring gastric emptying and motility are not considered optimal due to the time required, ionizing radiation, invasiveness, and spatial resolution. Purpose To assess gastric motility using novel real‐time dynamic magnetic resonance imaging in combination with static measurements for gastric ...
Lydia Neubauer, Leonie Forstreuter, Fabian Winter, Fiona Mankertz, Mark O. Wielpütz, Donata S. Grajecki, Antje Steveling, Ali A. Aghdassi, Sebastian Zeißig, Matthew D. Blackledge, Dirk Voit, Jens Frahm, Susanne Schnell, Werner Weitschies, Linus Großmann   +14 more
wiley   +1 more source

Myocardial strain in healthy adults across a broad age range as revealed by cardiac magnetic resonance imaging at 1.5 and 3.0T: associations of myocardial strain with myocardial region, age, and sex [PDF]

, 2016
Purpose: We assessed myocardial strain using cine displacement encoding with stimulated echoes (DENSE) using 1.5T and 3.0T MRI in healthy adults. Materials and Methods: Healthy adults without any history of cardiovascular disease underwent MRI at 1.5T ...
Aletras, Augustine, Bellenger, Bree, Buss, Choi, Dijk, Elliott, Gomez, Kalam, Kar, Kim, Korosoglou, Kramer, Kuznetsova, Lawton, Markl, Neizel, Osman, Oxenham, Park, Plana, Potter, Schuster, Schuster, Singh, Spottiswoode, Spottiswoode, Stanton, Steg, Taylor, Valeti, Wehner, Woo, Young, Zerhouni, Zhong, Zhong, Zhong   +38 more
core   +1 more source