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Total 150 results found since Jan 2013.

Finding Power in My Panic Attacks
Trouble started in the form of rivulets of sweat dampening the waistband of my underwear. It was a bluebird afternoon in Phoenix in December of 2020, mid 60s, desert dry, and my heart was jackhammering against my ribcage. Breathing felt like I was sucking air through a stir straw. A small ABC News crew was arrayed before me, ready to broadcast the report I’d written that day, but with my vision narrowed to a needle’s eye, I could barely see them. I tried to swallow away the sandiness in my mouth but realized I’d forgotten how. [time-brightcove not-tgx=”true”] “I can’t swallow!...
Source: TIME: Health - September 12, 2023 Category: Consumer Health News Authors: Matt Gutman Tags: Uncategorized freelance Source Type: news

A survey of deep learning for MRI brain tumor segmentation methods: Trends, challenges, and future directions
ConclusionThis review's objective is to increase scholars' interest in this difficult field and familiarize them with current advancements in it. To create CAD systems aimed at brain tumor identification using MR images, digital image processing approaches, such as preprocessing, segmentation, and classification, are applied. The classic machine learning and deep learning approaches for brain tumor identification are deliberated in this work. This paper provides a summary of commonly used MR image datasets. For classification, various machine learning and deep learning algorithms have been used. This survey examines curren...
Source: Health and Technology - February 27, 2023 Category: Information Technology Source Type: research

MRI for all: Cheap portable scanners aim to revolutionize medical imaging
.news-article__hero--featured .parallax__element{ object-position: 47% 50%; -o-object-position: 47% 50%; } The patient, a man in his 70s with a shock of silver hair, lies in the neuro intensive care unit (neuro ICU) at Yale New Haven Hospital. Looking at him, you’d never know that a few days earlier a tumor was removed from his pituitary gland. The operation didn’t leave a mark because, as is standard, surgeons reached the tumor through his nose. He chats cheerfully with a pair of research associates who have come to check his progress with a new and potentially revolutionary device they are testing. The cylind...
Source: Science of Aging Knowledge Environment - February 23, 2023 Category: Geriatrics Source Type: research

Implementation of Automated Pipeline for Resting-State fMRI Analysis with PACS Integration
AbstractIn recent years, the quantity and complexity of medical imaging acquisition and processing have increased tremendously. The explosion in volume and need for advanced imaging analysis have led to the creation of numerous software programs, which have begun to be incorporated into clinical practice for indications such as automated stroke assessment, brain tumor perfusion processing, and hippocampal volume analysis. Despite these advances, there remains a need for specialized, custom-built software for advanced algorithms and new areas of research that is not widely available or adequately integrated in these “out-...
Source: Journal of Digital Imaging - January 3, 2023 Category: Radiology Source Type: research

Cerebrovascular accident in a child with precursor B-cell acute lymphoblastic leukemia and coronavirus disease 2019: a case report
ConclusionOwing to the link between coronavirus disease 2019 and hematologic cancers with hypercoagulopathy and the tendency of patients with leukemia to have coronavirus disease 2019 complications, children with leukemia as well as suspected coronavirus disease 2019 must be hospitalized to prevent blood clot formation.
Source: Journal of Medical Case Reports - December 6, 2022 Category: General Medicine Source Type: research

Exploratory study to assess feasibility of intracerebral hemorrhage detection by point of care cranial ultrasound
ConclusionsOur exploratory analysis yielded preliminary data on use of point of care cranial ultrasound for ICH diagnosis to inform imaging techniques, cranial topography on B mode and sample size estimation for future studies to evaluate sensitivity and specificity of cranial POCUS in adult patients. This pilot study is limited by small sample size and over representation of ICH in the study. Cranial POCUS is feasible using POCUS machines and may have potential as a screening tool if validated in adequately powered studies.
Source: Critical Ultrasound Journal - October 17, 2022 Category: Radiology Source Type: research

Hypoxanthine is a pharmacodynamic marker of ischemic brain edema modified by glibenclamide
Cell Rep Med. 2022 Jun 9:100654. doi: 10.1016/j.xcrm.2022.100654. Online ahead of print.ABSTRACTBrain edema after a large stroke causes significant morbidity and mortality. Here, we seek to identify pharmacodynamic markers of edema that are modified by intravenous (i.v.) glibenclamide (glyburide; BIIB093) treatment. Using metabolomic profiling of 399 plasma samples from patients enrolled in the phase 2 Glyburide Advantage in Malignant Edema and Stroke (GAMES)-RP trial, 152 analytes are measured using liquid chromatography-tandem mass spectrometry. Associations with midline shift (MLS) and the matrix metalloproteinase-9 (MM...
Source: Cancer Control - June 14, 2022 Category: Cancer & Oncology Authors: Hannah J Irvine Animesh Acharjee Zoe Wolcott Zsuzsanna Ament H E Hinson Bradley J Molyneaux J Marc Simard Kevin N Sheth W Taylor Kimberly Source Type: research

Time Efficient Multi-Pulsed Field Gradient (mPFG) MRI Without Concomitant Gradient Field Artifacts
Measuring and mapping nervous tissue microstructure noninvasively is a long sought-after goal in neuroscience. Clinically, several neuropathologies such as cancer and stroke, are associated with changes in tissue microstructure. Diffusion tensor imaging (DTI), which models diffusion anisotropy, is an ideal imaging modality to elucidate these changes. However, DTI provides a mean diffusion tensor averaged over the entire MRI voxel. This has limitations when applied to heterogeneous neural tissue. Although some of these could be overcome by increased spatial resolution, this comes at the cost of reduced signal-to-noise ratio...
Source: NIH OTT Licensing Opportunities - May 10, 2022 Category: Research Authors: ott8admin Source Type: research

Imaging subtle leaks in the blood –brain barrier in the aging human brain: potential pitfalls, challenges, and possible solutions
AbstractRecent studies using dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) with gadolinium-based contrast agents (GBCA) have demonstrated subtle blood –brain barrier (BBB) leaks in the human brain during normal aging, in individuals with age-related cognitive dysfunction, genetic risk for Alzheimer’s disease (AD), mild cognitive impairment, early AD, cerebral small vessel disease (SVD), and other neurodegenerative disorders. In these neurologi cal conditions, the BBB leaks, quantified by the unidirectional BBB GBCA tracer’s constantKtrans maps, are typically orders of magnitude lower than in brain tu...
Source: AGE - April 25, 2022 Category: Geriatrics Source Type: research

60 Years of Achievements by KSNM in Neuroimaging Research
Nucl Med Mol Imaging. 2022 Feb;56(1):3-16. doi: 10.1007/s13139-021-00727-1. Epub 2022 Jan 15.ABSTRACTNuclear medicine neuroimaging is able to show functional and molecular biologic abnormalities in various neuropsychiatric diseases. Therefore, it has played important roles in the clinical diagnosis and in research on the normal and pathological states of the brain. More than 400 outstanding studies have been conducted by Korean researchers over the past 60 years. In the 1990s, when multiheaded single-photon emission computed tomography (SPECT) scanners were first introduced in South Korea, stroke research using brain perfu...
Source: Molecular Medicine - February 21, 2022 Category: Molecular Biology Authors: Jae Seung Kim Hye Joo Son Minyoung Oh Dong Yun Lee Hae Won Kim Jungsu Oh Source Type: research

Time Efficient Multi-Pulsed Field Gradient (mPFG) MRI Without Concomitant Gradient Field Artifacts
Measuring and mapping nervous tissue microstructure noninvasively is a long sought-after goal in neuroscience. Clinically, several neuropathologies such as cancer and stroke, are associated with changes in tissue microstructure. Diffusion tensor imaging (DTI), which models diffusion anisotropy, is an ideal imaging modality to elucidate these changes. However, DTI provides a mean diffusion tensor averaged over the entire MRI voxel. This has limitations when applied to heterogeneous neural tissue. Although some of these could be overcome by increased spatial resolution, this comes at the cost of reduced signal-to-noise ratio...
Source: NIH OTT Licensing Opportunities - February 18, 2022 Category: Research Authors: ott8admin Tags: Diagnostics Licensing Desired & Collaboration Desired Collaboration Sought NCI Source Type: research

Recurrent Strokes as the First Presentation of Occult Pancreatic Cancer; Trousseau Syndrome: A Case Report
We present a case of a 64-year-old female with recurrent ischemic stroke of unknown cause and involving different arterial territories, who was discovered to have metastatic pancreatic cancer. The initial workup with brain imaging revealed multiple acute/subacute ischemic strokes and a negative cardiac assessment. Accordingly, she underwent a whole-body positron emission tomography-computed tomography which revealed a hypermetabolic mass lesion in the pancreaticoduodenal area. Our case indicates that cancer-associated stroke should be seriously evaluated. It demonstrates the critical nature of contemplating hidden cancer i...
Source: Atherosclerosis - January 27, 2022 Category: Cardiology Authors: Firas Al Nidawi Mohamed Wael Mohamed Fatima Taha Daher Alarab Amr Elsayed M Hussein Source Type: research