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Total 120 results found since Jan 2013.

Cancers, Vol. 11, Pages 111: A Review on a Deep Learning Perspective in Brain Cancer Classification
uca Saba Jasjit S. Suri A World Health Organization (WHO) Feb 2018 report has recently shown that mortality rate due to brain or central nervous system (CNS) cancer is the highest in the Asian continent. It is of critical importance that cancer be detected earlier so that many of these lives can be saved. Cancer grading is an important aspect for targeted therapy. As cancer diagnosis is highly invasive, time consuming and expensive, there is an immediate requirement to develop a non-invasive, cost-effective and efficient tools for brain cancer characterization and grade estimation. Brain scans using magnetic resonanc...
Source: Cancers - January 18, 2019 Category: Cancer & Oncology Authors: Gopal S. Tandel Mainak Biswas Omprakash G. Kakde Ashish Tiwari Harman S. Suri Monica Turk John R. Laird Christopher K. Kwaku A. Annabel A. Ankrah N. N. Khanna B. K. Madhusudhan Luca Saba Jasjit S. Suri Tags: Review Source Type: research

Endovascular Therapy for Concurrent Cardio-Cerebral Infarction in a Patient With Trousseau Syndrome
Only a few patients have been reported to undergo endovascular therapy for Trousseau syndrome. This is the first report of a patient with Trousseau syndrome who developed synchronous cardiocerebral infarction and underwent endovascular therapy for both. A 55-year-old woman with Trousseau syndrome arising from stage IV ovarian cancer presented with consciousness disturbance, aphasia, and right hemiparesis. Magnetic resonance imaging showed acute cerebral infarction limited to the left basal ganglia and occlusion of the left middle cerebral artery (MCA). Electrocardiography showed ST elevation in leads II, III, and aVF with ...
Source: Frontiers in Neurology - September 5, 2019 Category: Neurology Source Type: research

Association Among Age-Related Tongue Muscle Abnormality, Tongue Pressure, and Presbyphagia: A 3D MRI Study
AbstractMuscle aging such as sarcopenia adversely affects motor activities. However, few studies have elucidated the aging physiological mechanism of tongue concerted with the changes muscle composition. The present study aimed to examine the tongue composition changes to detect the effect of tongue fat mass on tongue pressure and swallowing function with aging. Twenty community-dwelling elderly without head and neck cancer, stroke, or neuromuscular disease and 20 healthy young were included. Tongue volume, tongue fat mass, tongue lean muscle mass, and tongue fat percentage were evaluated with 3D magnetic resonance imaging...
Source: Dysphagia - August 1, 2020 Category: Speech-Language Pathology Source Type: research

Denoising of Dynamic Magnetic Resonance Spectroscopic Imaging Using Low Rank Approximations in the Kinetic Domain
Accurate measurement of low metabolite concentrations produced by medically important enzymes is commonly obscured by noise during magnetic resonance imaging (MRI). Measuring the turnover rate of low-level metabolites can directly quantify the activity of enzymes of interest, including possible drug targets in cancer and other diseases. Noise can cause the in vivo signal to fall below the limit of detection. A variety of denoising methods have been proposed to enhance spectroscopic peaks, but still fall short for the detection of low-intensity signals. Dynamic nuclear polarization (DNP) is one method that has been critical...
Source: NIH OTT Licensing Opportunities - August 24, 2020 Category: Research Authors: ott-admin Source Type: research

Isolated oculomotor nerve palsy as a manifestation of diffuse large B cell lymphoma: A case report.
Authors: Khaleefah MM, Narayanan S, Dallal HAA, Jones CM, Friedland RP, Palade AE, Remmel KS, Shah JJ Abstract An isolated third nerve palsy presenting as the primary manifestation of a lymphoma is rare, with only few cases having been described. The present study reports an unusual case of a healthy 67-year old male diagnosed with isolated right oculomotor nerve palsy (ONP), who was found to have an underlying B cell lymphoma. The patient's medical records were accessed upon consent. A thorough physical examination, including stroke and infections work-ups were performed. A chest computerized tomography (CT), brai...
Source: Oncology Letters - October 6, 2020 Category: Cancer & Oncology Tags: Oncol Lett Source Type: research

Nonbacterial Thrombotic Endocarditis Related to Adenocarcinoma of the Uterine Cervix
We report a 66-year-old female patient who presented with acute onset of visual loss with relative afferent pupillary defect, hemineglect, hemihypesthesia, and apraxia. Magnetic resonance imaging of the brain demonstrated different stages of ischemic stroke in different vascular territories, suggesting cardiogenic embolism. Past history was significant for advanced-stage adenocarcinoma of the uterine cervix under chemoradiation treatment. On echocardiogram, vegetation at the aortic valve was observed. With the absence of evidence of infectious endocarditis, diagnosis of nonbacterial thrombotic endocarditis was made, and th...
Source: Case Reports in Neurology - December 14, 2020 Category: Neurology Source Type: research

A Rare Case of Clival Metastasis in a Patient with Gastric Cancer.
We report a rare case of clival metastasis from gastric cancer. A 73-year-old man with advanced gastric cancer treated with nivolumab as a third-line chemotherapy experienced headache, tongue deviation, and difficulties in speaking clearly. We suspected stroke or brain metastasis, but brain contrast-enhanced magnetic resonance imaging demonstrated a clival mass, diagnosed as clival metastasis from gastric cancer. The tumor could not be identified by plain computed tomography and plain magnetic resonance imaging alone. He received palliative radiotherapy (30 Gy/10 fr); his symptoms improved gradually. Although metastasis fr...
Source: Internal Medicine - December 19, 2020 Category: Internal Medicine Tags: Intern Med Source Type: research

Non-invasive MRI Studies of Ventilatory and Cardiovascular Performance in Edible Crabs Cancer pagurus During Warming Under Elevated CO2 Levels
This study investigated the impacts of warming under two CO2 levels on ventilation and hemolymph circulation in edible crabs Cancer pagurus. It also highlights changes in the ventilatory and cardiac pauses displayed by Decapoda under routine metabolism. Animals were exposed to step-wise, sub-critical warming (12–20°C over 5 days) under control (470 μatm) and high (1,350 μatm) water PCO2. Flow-through respirometry was combined with magnetic resonance imaging and infra-red photoplethysmography to allow for simultaneous, non-invasive measurements of metabolic rates (M˙O2), ventilation and cardiovascular performance. Cra...
Source: Frontiers in Physiology - January 11, 2021 Category: Physiology Source Type: research

Therapeutic Nuclear Magnetic Resonance affects the core clock mechanism and associated Hypoxia-inducible factor-1
Chronobiol Int. 2021 Apr 13:1-15. doi: 10.1080/07420528.2021.1910288. Online ahead of print.ABSTRACTThe influence of low intensity electromagnetic fields on circadian clocks of cells and tissues has gained increasing scientific interest, either as a therapeutic tool or as a potential environmental hazard. Nuclear Magnetic Resonance (NMR) refers to the property of certain atomic nuclei to absorb the energy of radio waves under a corresponding magnetic field. NMR forms the basis for Magnetic Resonance Imaging, Magnetic Resonance Spectroscopy and, in a low-intensity form, for NMR therapy (tNMR). Since the circadian clock is b...
Source: Chronobiology International - April 13, 2021 Category: Biology Authors: Viktoria Th öni Regina Oliva David Mauracher Margit Egg Source Type: research

Age-related composition changes in swallowing-related muscles: a Dixon MRI study
CONCLUSIONS: IMF is primarily associated with age-related composition changes in swallowing-related muscles, and it is commonly observed in the tongue and pharyngeal muscles. The geniohyoid muscle is more at risk of muscle atrophy rather than fatty infiltration. In addition, tongue pressure can be a parameter for the evaluation of swallowing-related muscle mass.PMID:33904143 | DOI:10.1007/s40520-021-01859-2
Source: Aging Clinical and Experimental Research - April 27, 2021 Category: Geriatrics Authors: Yuta Nakao Yuki Uchiyama Kosuke Honda Taiji Yamashita Shota Saito Kazuhisa Domen Source Type: research

Multiple cerebral infarction linked to underlying cancer: a review of Trousseau syndrome-related cerebral infarction
Br J Hosp Med (Lond). 2021 May 2;82(5):1-7. doi: 10.12968/hmed.2020.0696. Epub 2021 May 26.ABSTRACTTrousseau syndrome is a cancer-associated hypercoagulative state leading to venous or arterial thromboembolic events. Cerebral infarction is the most common result of arterial embolism and the pathogenesis is complicated, mainly associated with hypercoagulation and non-bacterial thrombotic endocarditis. On magnetic resonance imaging, multiple lesions are dispersed in more than two territories of the brain, often simultaneously involving the bilateral anterior and posterior circulation. Elevated plasma levels of D-dimer and fi...
Source: British Journal of Hospital Medicine - June 2, 2021 Category: Internal Medicine Authors: Chao Zhen Yabo Wang Haifeng Wang Dongmei Li Xin Wang Source Type: research