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Clear and Consistent Imaging of Hippocampal Internal Architecture With High Resolution Multiple Image Co-registration and Averaging (HR-MICRA)

Lawrence Ver Hoef, Hrishikesh Deshpande, Joel Cure, Goutham Selladurai, Julia Beattie, Richard E. Kennedy, Robert C. Knowlton, Jerzy P. Szaflarski
2021 Frontiers in Neuroscience  
We refer to this approach as High Resolution Multiple Image Co-registration and Averaging (HR-MICRA).  ...  In this work we describe an approach to hippocampal imaging that provides consistently high HIA clarity using a commonly available sequence and post-processing techniques that is flexible and may be applicable  ...  without the necessity of ultra high field scanners (7T+) or state-of-the-art high performance 3T scanners, which makes access to such high quality images far more widespread.  ... 
doi:10.3389/fnins.2021.546312 pmid:33642971 pmcid:PMC7905096 fatcat:pceqyhj2cba2lk5jhmapzmncam

A combined local and global motion estimation and compensation method for cardiac CT

Qiulin Tang, Beshan Chiang, Akinola Akinyemi, Alexander Zamyatin, Bibo Shi, Satoru Nakanishi, Bruce R. Whiting, Christoph Hoeschen
2014 Medical Imaging 2014: Physics of Medical Imaging  
This brings us to the idea of transferring the high SNR of the composite image volume to the low SNR (but high resolution) 'source' image data.  ...  X-ray phase-contrast imaging has been developed as an alternative to conventional absorption imaging, partly for its dose advantage over absorption imaging at high resolution.  ...  FTIR chemical imaging allows the spatial distribution of chemistry to be rapidly imaged at a high (diffraction limited) spatial resolution where a pixel represents an area of 5.5 ? 5.5 µm2 of tissue.  ... 
doi:10.1117/12.2043492 fatcat:fyzpc5m6jbh7fjohqpdmtzkhte

Characterizing Rapid Fluctuations of Resting State Functional Connectivity in Demyelinating, Neurodegenerative, and Psychiatric Conditions: From Static to Time-Varying Analysis

Paola Valsasina, Milagros Hidalgo de la Cruz, Massimo Filippi, Maria A. Rocca
2019 Frontiers in Neuroscience  
Functional magnetic resonance imaging (fMRI) at resting state (RS) has been widely used to characterize the main brain networks.  ...  In healthy subjects, the default-mode network (DMN) exhibited the highest degree of connectivity dynamism.  ...  Also, the use of ultra-fast fMRI acquisition techniques, such as inverse imaging (Lin et al., 2006) , generalized inverse imaging (Boyacioglu and Barth, 2013) , or multi-slab echovolumar imaging (Posse  ... 
doi:10.3389/fnins.2019.00618 pmid:31354402 pmcid:PMC6636554 fatcat:lezpk4273ne6jma6z45k6bsvii

2016 Biennial Meeting of the American Society for Stereotactic and Functional Neurosurgery, Chicago, IL, USA, June 18-21, 2016: Abstracts

2016 Stereotactic and Functional Neurosurgery  
In a group of patients with extreme levels of treatment-resistance to conventional treatments, using a within-subject analysis, DBS was associated with a decrease in the rate of suicide attempts and hospitalizations  ...  Results A total of 4402 patient-months (366.8 patient-years) of followup were provided to all groups.  ...  Results Nonlinear registration improved our ability to align 7T to 3T images.  ... 
doi:10.1159/000455386 pmid:28092908 fatcat:dfobre7vdfcqvekxhbc4aekwgy

Proceedings of the World Molecular Imaging Congress 2020, October 7-9, 2020: General Abstracts

2022 Molecular Imaging and Biology  
Target-to-background ratios maximized at 14 hours post pan800 infusion and reached 19.5 in vivo and 7.6 ex vivo, respectively.  ...  The epidermal growth factor receptor (EGFR) is a biomarker heterogeneously expressed in high-grade gliomas (HGGs).  ...  coherent blood volume fluctuations (i.e. vasodilations and vasoconstrictions) in areas with sprouting tumor vessels (D3-D6), which become more correlated (D7-D9), and finally show a decrease of MC due to  ... 
doi:10.1007/s11307-021-01691-0 pmid:34982363 pmcid:PMC8725637 fatcat:ipn7hwekzzh6nbsk6dr2mzuhhm

Athletic injuries of the extensor carpi ulnaris subsheath: MRI findings and utility of gadolinium-enhanced fat-saturated T1-weighted sequences with wrist pronation and supination

Jeremy Jeantroux, Fabio Becce, Henri Guerini, Bernard Montalvan, Dominique Le Viet, Jean-Luc Drapé
2010 European Radiology  
We employed a high-resolution multi-frequency transducer (6-9 MHz) with contrast harmonic imaging and low mechanical index technique to preserve microbubble integrity.  ...  Conclusion: Using modified 3D-GRE sequence at 7T, sufficiently high SNR in sodium images was achieved, allowing for the differentiation of repair tissue and native cartilage after MACT.  ...  subjective resulting in poor inter-and intra-departmental agreement on image quality.  ... 
doi:10.1007/s00330-010-1887-3 pmid:20680292 fatcat:c73xl4gmnjbp5hahuek6dg2pcu

ECR 2011 Book of Abstracts - B - Scientific Sessions

2011 Insights into Imaging  
Purpose: To compare the HCC nodule conspicuity during the arterial phase between contrast-enhanced 64-row multidetector CT with bolus tracking and MR imaging with bolus chase.  ...  in abdominal aorta at MR fluoroscopy.  ...  After acquisition of T1w/T2w images, conventional MRC was performed through thin-slab 3D FRFSE T2w and thick-slab SSFSE T2w sequences.  ... 
doi:10.1007/s13244-011-0077-4 pmid:23100071 pmcid:PMC3533624 fatcat:lytbu2vohbhhnorjqlpogl77iu

Abstracts

2019 Clinical Neuroradiology  
before performing an intra-subject comparison.  ...  Channel Head Coil) and high-resolution 3D black-blood T1 vessel wall imaging (pre-and post Gd) were performed.  ...  Methods: 19 amateur boxers and 19 age-matched healthy controls underwent 3T high-resolution magnetic resonance (MR) imaging.  ... 
doi:10.1007/s00062-019-00826-9 fatcat:c6tdsym7jjc5dcduvvz7nxhcj4

International Society for Therapeutic Ultrasound Conference 2016

Brian Fowlkes, Pejman Ghanouni, Narendra Sanghvi, Constantin Coussios, Paul C. Lyon, Michael Gray, Christophoros Mannaris, Marie de Saint Victor, Eleanor Stride, Robin Cleveland, Robert Carlisle, Feng Wu (+723 others)
2017 Journal of Therapeutic Ultrasound  
Another challenge stems from the need for a high rate of image acquisition. This may be currently associated with a high radiation dose.  ...  Acknowledgements This work was supported by MEXT-Supported Program for the Strategic Research Foundation at Private.  ...  Every other week, high-resolution T2w imaging was performed to determine tumour volume.  ... 
doi:10.1186/s40349-016-0079-2 fatcat:wjrvxyhd5bappjipymenn5swwq

Abstracts from the International Society for Therapeutic Ultrasound Conference 2017

2018 Journal of Therapeutic Ultrasound  
T2* maps were created by fitting signal intensity at each voxel to a single exponential fit with in-house software and histogram analysis was performed on volume of interests (VOI).  ...  RESULTS 18F-DPA-714 uptake was increased at the sonication sites in all locations (Fig. 1) .  ...  High-resolution MRI (7T) and microbubble-enhanced US imaging was performed pre-and post-injection of AML.  ... 
doi:10.1186/s40349-018-0110-x fatcat:4nn4nwntgbfl5cdwvqc3wfxszu

2014 Joint ACTRIMS-ECTRIMS Meeting (MSBoston 2014): Oral Presentations

2014 Multiple Sclerosis  
Conclusions: No soft-tissue correlates of LME in MS are seen even on high-resolution 7T MRI scans.  ...  A probabilistic atlas of CDRs was created from HC images and applied to all subjects to derive average values of fractional anisotropy (FA) and mean diffusivity (MD).  ...  QSM Imaging was performed using high resolution (in plane resolution: 0.23x0.23mm 2 ) 3D susceptibility weighted imaging.  ... 
doi:10.1177/1352458514546076 pmid:25205047 pmcid:PMC4518813 fatcat:5giyc6lpwrdhzgjat3fhfcfcmi

A - Postgraduate Educational Programme

2010 Insights into Imaging  
A high radiation dose results in high-resolution images, while a lower dose leads to increased image noise and results in unsharp images.  ...  Despite these limitations, high field MRI offers image with very high resolution, it provides unique contrasts, a better spectral separation of the resonance lines and high signal for non-proton applications  ...  Although spatial resolution is lower than at CT, MRI allows for the visualisation of the lung parenchyma by using ultra short echo time (TE).  ... 
doi:10.1007/s13244-010-0010-2 pmid:23099630 pmcid:PMC3534349 fatcat:5fiszmj5unftrhizcn3encksgy

Postgraduate Educational Programme

2008 European Radiology Supplements  
A high radiation dose results in high-resolution images, while a lower dose leads to increased image noise and results in unsharp images.  ...  Despite these limitations, high field MRI offers image with very high resolution, it provides unique contrasts, a better spectral separation of the resonance lines and high signal for non-proton applications  ...  Although spatial resolution is lower than at CT, MRI allows for the visualisation of the lung parenchyma by using ultra short echo time (TE).  ... 
doi:10.1007/s10406-008-0001-2 fatcat:gzbh2ky3enhabmfr7tz42qqqwi

Postgraduate Educational Programme

2009 European Radiology  
A high radiation dose results in high-resolution images, while a lower dose leads to increased image noise and results in unsharp images.  ...  Despite these limitations, high field MRI offers image with very high resolution, it provides unique contrasts, a better spectral separation of the resonance lines and high signal for non-proton applications  ...  Although spatial resolution is lower than at CT, MRI allows for the visualisation of the lung parenchyma by using ultra short echo time (TE).  ... 
doi:10.1007/s00330-009-1374-x pmid:19288110 fatcat:blzt6eohybeqjngnpyzlw7un6a

A postgraduate educational programme

2002 European Radiology  
A high radiation dose results in high-resolution images, while a lower dose leads to increased image noise and results in unsharp images.  ...  Despite these limitations, high field MRI offers image with very high resolution, it provides unique contrasts, a better spectral separation of the resonance lines and high signal for non-proton applications  ...  Although spatial resolution is lower than at CT, MRI allows for the visualisation of the lung parenchyma by using ultra short echo time (TE).  ... 
doi:10.1007/s00330-002-0001-x fatcat:swpi4r6hzrgozpfxwqgz55bmvi
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