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A new approach in combined modeling of MRI and blood flow: A preliminary study

Krzysztof Jurczuk, Marek Kretowski, Pierre-Anatoine Eliat, Jean-Jacques Bellanger, Herve Saint-Jalmes, Johanne Bezy-Wendling
2012 2012 9th IEEE International Symposium on Biomedical Imaging (ISBI)  
A combined model of MRI acquisition and blood flow is presented.  ...  The blood flow patterns are modeled using the Lattice Boltzmann Method, and the magnetic resonance experiments follow the Bloch equation.  ...  We propose, in this preliminary study, to couple a vascular model where flows are simulated by the Lattice Boltzmann Method (LBM) [1] , and a model of Magnetic Resonance Image (MRI) acquisition, based  ... 
doi:10.1109/isbi.2012.6235672 dblp:conf/isbi/JurczukKEBSB12 fatcat:znlvwkouhfbqxfhizfytxmml2a

Imaging Analysis of the In vivo Bioreactor: A Preliminary Study

Ginger E. Holt, Jennifer L. Halpern, Conor C. Lynch, Clinton J. Devin, Herbert S. Schwartz
2008 Clinical Orthopaedics and Related Research  
Nondestructive measures of new bone growth within the bioreactor are critical to future applications and are the primary questions posed in this study.  ...  The bioreactor also provides a model to study osteogenesis and pathologic scenarios such as tumor progression and metastasis by creating a controlled microenvironment that makes skeletogenesis amenable  ...  Peterson, and John C. Gore from the Department of Radiology and Radiological Sciences, Institute of Imaging Science at Vanderbilt University, Nashville, TN.  ... 
doi:10.1007/s11999-008-0295-3 pmid:18506563 pmcid:PMC2584254 fatcat:i4rwbtjkcvgbnmmf36epspxfh4

Abnormal myocardial perfusion in hypertrophic cardiomyopathy: preliminary findings of a cardiovascular MRI study

James A White, Sarah Armstrong, Mohammed Al-Admawi, Sherryn Rambihar, Gerald Wisenberg, Ivonna Verschuur, Anna MacDonald, Cyndi Harper-Little, Aaron So, Ting-Yim Lee, Frank Prato, Terry Thomspon
2009 Journal of Cardiovascular Magnetic Resonance  
Myocardial siderosis is the main cause of morbidity and mortality in thalassaemia major. In the United Kingdom approximately 50% of patients die before reaching 35 years.  ...  T2* CMR can now assess cardiac iron O3 Sub-clinical systolic dysfunction with persistent myocardial edema and inflammation in elite high-endurance athletes with common colds: a cardiovascular magnetic  ...  Further studies with patients are required to assess sensitivity and specificity.  ... 
doi:10.1186/1532-429x-11-s1-p55 fatcat:hgmjhdnw5vefbblfdtowa374xm

Dynamic spiral MRI of pulmonary gas flow using hyperpolarized3He: Preliminary studies in healthy and diseased lungs

Michael Salerno, Talissa A. Altes, James R. Brookeman, Eduard E. de Lange, John P. Mugler
2001 Magnetic Resonance in Medicine  
Our initial experience in healthy volunteers and subjects with lung pathology demonstrated the potential of this new tool for capturing the features of lung gas-flow dynamics.  ...  An optimized interleaved-spiral pulse sequence, providing high spatial and temporal resolution, was developed for dynamic imaging of pulmonary ventilation with hyperpolarized 3 He, and tested in healthy  ...  (R)(MR) for valuable assistance with the MR experiments, and Jaime F. Mata, B.S., and Bradlee A. Johnson, B.S., for their expert operation of the helium polarization system.  ... 
doi:10.1002/mrm.1244 pmid:11590642 fatcat:rjcqrl7okrg3loma3q5fgpwv3m

Three-dimensional virtual reality simulation of periarticular tumors using Dextroscope reconstruction and simulated surgery: A preliminary 10-case study

Jie Chen
2014 Medical Science Monitor  
imaging (MRI), and MRI angiography (MRI-A).  ...  The resolutions of the original CT, MRI, and MRI-A images directly correlated with 3D simulation quality, with soft tissues most poorly represented.  ...  However, CT scanning is superior to MRI for identifying lesions in bone structures, and MRI-A excels at identification of tumor blood supplies [17] [18] [19] .  ... 
doi:10.12659/msm.889770 pmid:24961404 pmcid:PMC4076173 fatcat:nsb7zohnnrafbojepb5xaob33a

The Relationship between Glucose Metabolism, Resting-State fMRI BOLD Signal, and GABAA-Binding Potential: A Preliminary Study in Healthy Subjects and Those with Temporal Lobe Epilepsy

Allison C Nugent, Ashley Martinez, Alana D'Alfonso, Carlos A Zarate, William H Theodore
2015 Journal of Cerebral Blood Flow and Metabolism  
TLE may be a disorder of altered long-range connectivity in association with glutamate function.  ...  Glucose metabolism has been associated with magnitude of blood oxygen level-dependent (BOLD) signal and connectivity across subjects within the default mode and dorsal attention networks.  ...  ACKNOWLEDGMENTS The authors thank Irene Dustin and the members of the NINDS Clinical Epilepsy Section. Ioline Henter, MA (NIMH) provided invaluable editorial assistance.  ... 
doi:10.1038/jcbfm.2014.228 pmid:25564232 pmcid:PMC4420874 fatcat:peovwll74rdr7gtwagi5rm4ymm

Quantitative angiographic haemodynamic evaluation of bypasses for complex aneurysms: a preliminary study

Junlin Lu, Chao Xue, Xulin Hu, Yuanli Zhao, Dong Zhang, Xiaolin Chen, Ji Zong Zhao
2021 Stroke and Vascular Neurology  
The recipient/donor flow index (RDFI) was preoperatively evaluated using colour-coding angiography. RDFI was defined as the ratio of the cerebral blood volume of the recipient and donor arteries.  ...  IRS was defined as the presence of new postoperative neurological deficits and infarction on postoperative CT scans.  ...  Thus, there may be a combination of long temporary occlusion time and insufficient blood flow of the bypass artery in these patients.  ... 
doi:10.1136/svn-2021-000858 pmid:34642254 pmcid:PMC8899645 fatcat:fjgov2yjqban7diujelcenjff4

A preliminary study of ALPPS procedure in a rat model

Huawen Shi, Guangchao Yang, Tongsen Zheng, Jiabei Wang, Lulu Li, Yingjian Liang, Changming Xie, Dalong Yin, Boshi Sun, Jing Sun, Huanlai Wang, Shangha Pan (+3 others)
2015 Scientific Reports  
In the present study, we intend to develop a reproducible rat model to mimick ALPPS and to explore the underlying mechanisms.  ...  Despite occasional reports on animal studies, the mechanisms of rapid liver regeneration in ALPPS remains unclear.  ...  A new two-step approach has recently been developed using the acronym ALPPS to describe this operation 24 .  ... 
doi:10.1038/srep17567 pmid:26631552 pmcid:PMC4668375 fatcat:bojkidgrxfgsvlv4cozfpvuibq

Blood oxygen level dependent magnetic resonance imaging for detecting pathological patterns in lupus nephritis patients: a preliminary study using a decision tree model

Huilan Shi, Junya Jia, Dong Li, Li Wei, Wenya Shang, Zhenfeng Zheng
2018 BMC Nephrology  
MRI images contain vast quantities of information and in principle almost unlimited numbers can be extracted from the data -increasing the probability that a good classification can be achieved through  ...  Extrapolating from previous studies a 10-20% coefficient of variation for median R2* is not unreasonable, presumably significantly more for less precise parameters (skewness etc) and when physiological  ...  The authors return to this part of the methods in the discussion section (p10,51 and onwards) explaining that this is a new methodology developed for this project with some more details on the approach  ... 
doi:10.1186/s12882-017-0787-z pmid:29426280 pmcid:PMC5806290 fatcat:ytudjteiqndybgsyysm2avs6bu

AC133+ progenitor cells as gene delivery vehicle and cellular probe in subcutaneous tumor models: a preliminary study

Ali M Rad, ASM Iskander, Branislava Janic, Robert A Knight, Ali S Arbab, Hamid Soltanian-Zadeh
2009 BMC Biotechnology  
In this study, we used superparamagentic iron oxide (SPIO)-labeled APCs to carry the human sodium iodide symporter (hNIS) gene to the sites of implanted breast cancer in mouse model.  ...  MRI and single photon emission computed tomography (SPECT) images were acquired 3 and 7 days after cell injection, with a 7 Tesla animal MRI system and a custom built micro-SPECT using Tc-99m, respectively  ...  Acknowledgements This work was supported in part by the Department of Defense Breast Cancer Research Program under grant number W81XWH-06-1-0576 and by the National Institutes of Health (NIH) under grant  ... 
doi:10.1186/1472-6750-9-28 pmid:19327159 pmcid:PMC2669076 fatcat:dhmyzz3b6nbtdoplurmte4g4bq

Is There Functional Vascular Information in Anatomical MR Sequences? A Preliminary in Vivo Study

R. Winzenrieth, I. Claude, M.-C. Hobatho, G. Sebag
2006 IEEE Transactions on Biomedical Engineering  
In some cases, the blood flow is interrupted, as in Legg-Calvé-Perthes disease (LCPD), also called idiopathic avascular necrosis of the femoral head.  ...  A Preliminary in Vivo Study Renaud Winzenrieth*, Isabelle Claude, Marie-Christine Hobatho, and Guy Sebag Abstract-According to the type of sequences used, either morphological or dynamic functional study  ...  templates or combinations of spike waveforms in the frequency domain.  ... 
doi:10.1109/tbme.2006.873552 pmid:16761847 fatcat:4znvawleordhraxlfnwaesxufi

Translational research of temporomandibular joint pathology: a preliminary biomarker and fMRI study

Andre Barkhordarian, Gary Demerjian, Francesco Chiappelli
2020 Journal of Translational Medicine  
The fMRI study of TMD patients showed an abnormal hyper-connected salience network and a diminished blood flow to the anterior frontal lobes when they did not wear their customized dental orthotics.  ...  Our results showed a correlation between the clinical diagnosis of the pathological TMJ, biomarkers and the fMRI study.  ...  Bradley Jabour and his team for the fMRI analysis studies.  ... 
doi:10.1186/s12967-019-02202-0 pmid:31931814 pmcid:PMC6956559 fatcat:vdz5hnfl2fgzpb2mq57ftgbcqy

Cerebral Oxidative Stress in Early Alzheimer's Disease Evaluated by 64Cu-ATSM PET/MRI: A Preliminary Study

Hidehiko Okazawa, Masamichi Ikawa, Tetsuya Tsujikawa, Tetsuya Mori, Akira Makino, Yasushi Kiyono, Yasunari Nakamoto, Hirotaka Kosaka, Makoto Yoneda
2022 Antioxidants  
When comparing absolute values, eAD patients had a greater Kin in the posterior cingulate cortex and a greater k3 in the hippocampus compared with lobar cortical values of HCs.  ...  Ten eAD patients (72 ± 9 years) and 10 age-matched healthy controls (HCs) (73 ± 9 years) participated in this study.  ...  Acknowledgments: The authors thank Hiroshi Oikawa and other staff of the Biomedical Imaging Research Center, and Tomoyuki Mizuno and other doctors in the Departments of Neurology and Psychiatry, University  ... 
doi:10.3390/antiox11051022 pmid:35624886 pmcid:PMC9138060 fatcat:66klsb6lcbbohlxixhucpfs5ra

Radiology- and gene-based risk stratification in small renal cell carcinoma: A preliminary study

Seiichiro Takao, Yasuhiro Ushijima, Yushi Motomura, Katsumi Sakamoto, Masakazu Hirakawa, Akihiro Nishie, Koshi Mimori, Yasuo Yamashita, Takashi Tsutsumi, Kousei Ishigami, Rajvir Dahiya
2021 PLoS ONE  
The CCP score was significantly inversely correlated with Ktrans and Kep. The ccA tumors tended to show a pseudocapsule on MRI.  ...  Methods We acquired biopsy specimens of 18 clear cell carcinomas that had undergone perfusion CT (pCT) and MRI between April 2018 and March 2019.  ...  This suggests that the number of cells increases and the blood flow decreases with increasing tumor volume.  ... 
doi:10.1371/journal.pone.0256471 pmid:34492075 pmcid:PMC8423232 fatcat:dpuzleiebba6tmxk3jkxr3rxoi

Language Processing in Toddlers with Permanent Congenital Sensorineural Hearing Impairment: A Preliminary Functional Magnetic Resonance Imaging (fMRI) Study

Prasanna Karunanayaka
2020 American Journal of Biomedical Science & Research  
Acknowledgments The study was supported by a grant from the U.S. National  ...  [17] concluded that the immature vascular system in neonates is the leading factor in determining the polarity of the BOLD signal, and that local cerebral blood flow (CBF) may be the dominant factor  ...  relatively new.  ... 
doi:10.34297/ajbsr.2020.10.001471 fatcat:ptossk6g6vhrzostzwbfwsw66e
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