scholarly journals Motion Compensated Magnetic Resonance Reconstruction Using Inverse-Consistent Deformable Registration: Application to Real-Time Cine Imaging

2011 ◽  
pp. 564-572 ◽  
Author(s):  
Hui Xue ◽  
Yu Ding ◽  
Christoph Guetter ◽  
Marie-Pierre Jolly ◽  
Jens Guehring ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Real Time ◽  
Deformable Registration ◽  
Cine Imaging

scholarly journals Evaluation of cine imaging during multileaf collimator and gantry motion for real‐time magnetic resonance guided radiation therapy

2020 ◽  
Vol 21 (12) ◽  
pp. 178-187
Author(s):  
Jerrold E. Kielbasa ◽  
Sanford L. Meeks ◽  
Patrick Kelly ◽  
Twyla R. Willoughby ◽  
Omar Zeidan ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Magnetic Resonance ◽  
Real Time ◽  
Cine Imaging ◽  
Multileaf Collimator

Articulatory Synthesis Based on Real-Time Magnetic Resonance Imaging Data

2016 ◽  
Author(s):  
Asterios Toutios ◽  
Tanner Sorensen ◽  
Krishna Somandepalli ◽  
Rachel Alexander ◽  
Shrikanth S. Narayanan
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Real Time ◽  
Imaging Data ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Data ◽  
Articulatory Synthesis

scholarly journals Cardiac involvement in COVID-19 patients: mid-term follow up by cardiovascular magnetic resonance

2021 ◽  
Vol 23 (1) ◽  
Author(s):  
Hui Wang ◽  
Ruili Li ◽  
Zhen Zhou ◽  
Hong Jiang ◽  
Zixu Yan ◽  
...  
Keyword(s):  
Cardiovascular Magnetic Resonance ◽  
Magnetic Resonance ◽  
Cardiac Involvement ◽  
Global Longitudinal Strain ◽  
Cine Imaging ◽  
Black Blood ◽  
Healthy Controls ◽  
Term Outcome ◽  
Post Contrast

Abstract Background Coronavirus disease 2019 (COVID-19) induces myocardial injury, either direct myocarditis or indirect injury due to systemic inflammatory response. Myocardial involvement has been proved to be one of the primary manifestations of COVID-19 infection, according to laboratory test, autopsy, and cardiovascular magnetic resonance (CMR). However, the middle-term outcome of cardiac involvement after the patients were discharged from the hospital is yet unknown. The present study aimed to evaluate mid-term cardiac sequelae in recovered COVID-19 patients by CMR Methods A total of 47 recovered COVID-19 patients were prospectively recruited and underwent CMR examination. The CMR protocol consisted of black blood fat-suppressed T2 weighted imaging, T2 star mapping, left ventricle (LV) cine imaging, pre- and post-contrast T1 mapping, and late gadolinium enhancement (LGE). LGE were assessed in mixed both recovered COVID-19 patients and healthy controls. The LV and right ventricle (RV) function and LV mass were assessed and compared with healthy controls. Results A total of 44 recovered COVID-19 patients and 31 healthy controls were studied. LGE was found in 13 (30%) of COVID-19 patients. All LGE lesions were located in the mid myocardium and/or sub-epicardium with a scattered distribution. Further analysis showed that LGE-positive patients had significantly decreased LV peak global circumferential strain (GCS), RV peak GCS, RV peak global longitudinal strain (GLS) as compared to non-LGE patients (p < 0.05), while no difference was found between the non-LGE patients and healthy controls. Conclusion Myocardium injury existed in 30% of COVID-19 patients. These patients have depressed LV GCS and peak RV strains at the 3-month follow-up. CMR can monitor the COVID-19-induced myocarditis progression, and CMR strain analysis is a sensitive tool to evaluate the recovery of LV and RV dysfunction.

scholarly journals Nanometre-Scale Visualization of Chemical Parameter Changes by T1-Weighted ODMR Imaging Using a Fluorescent Nanodiamond

Chemosensors ◽  
2020 ◽  
Vol 8 (3) ◽  
pp. 68
Author(s):  
Takahiro Fujisaku ◽  
Ryuji Igarashi ◽  
Masahiro Shirakawa
Keyword(s):  
Magnetic Resonance ◽  
Laser Pulse ◽  
Real Time ◽  
Physical Parameters ◽  
Biological Processes ◽  
Chemical Parameter ◽  
Ph Conditions ◽  
Optically Detected ◽  
Life Phenomena ◽  
Selection Of

The dynamics of physical parameters in cells is strongly related to life phenomena; thus, a method to monitor and visualize them on a single-organelle scale would be useful to reveal unknown biological processes. We demonstrate real-time nanometre-scale T1-weighted imaging using a fluorescent nanodiamond. We explored optically detected magnetic resonance (ODMR) contrast at various values of interval laser pulse (τ), showing that sufficient contrast is obtained by appropriate selection of τ. By this method, we visualized nanometre-scale pH changes using a functionalized nanodiamond whose T1 has a dependence on pH conditions.

scholarly journals MP05-16 COMPUTATIONAL FLUID DYNAMICS SIMULATION OF MALE VOIDING: A NOVEL METHOD USING REAL-TIME MAGNETIC RESONANCE IMAGE

2016 ◽  
Vol 195 (4S) ◽  
Author(s):  
Shigehiro Soh ◽  
Toshiyuki Iwahata ◽  
Keisuke Suzuki ◽  
Tomohiro Kobayashi ◽  
Shin Takeshi ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Magnetic Resonance ◽  
Real Time ◽  
Magnetic Resonance Image ◽  
Dynamics Simulation ◽  
Computational Fluid Dynamics Simulation ◽  
Novel Method
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