Advanced searches left 3/3

Magnetic-resonance Imaging - DOAJ

Summarized by Plex Scholar
Last Updated: 04 December 2022

* If you want to update the article please login/register

Investigating the effects of antipsychotics on brain insulin action: Study protocol for a multi-modality magnetic resonance imaging (MRI) study in healthy controls

Brain insulin resistance has been shown to be at the cross-roads of several cognitive and metabolic disorders, and disruption of central insulin function has emerged as a potential explanatory mechanism for AP-induced metabolic dysfunction. Change in neuroimaging-based parameters with intranasal insulin administration, according to previous studies, can be used to investigate brain insulin resistance. We will use neural evidence of insulin release in the brain to see if APs disrupt brain insulin signaling in this proof-of-concept study. Participants will receive a brain insulin assay 15 minutes after deciding whether or not they should administer 160 IU INI or INP. In SCZ, demonstrations that OLA can acutely raise brain insulin resistance is particularly relevant to metabolic health. Evidence of brain insulin resistance induced by acute AP dosing can help determine the early use of adjunctive insulin sensitizers for the treatment of metabolic disorders associated with AP therapy in severe mental disorders.

Source link: https://doaj.org/article/f68d2fba4b5d4cf8b619a4f0e98baba7


The clinical features and image characteristics of Meniere's disease patients with endolymphatic hydrops confirmed by enhanced magnetic resonance imaging

Endolymphatic Hydrops were reported by enhanced Magnetic Resonance Imaging to investigate and report Meniere's Disease patients' clinical characteristics and image characteristics, as well as Endolymphatic Hydrops. Methods: The enrollment of 252 MD patients with EH confirmed by MRI was confirmed by MRI. In all MD patients, EH was demonstrated, and 157 of the 252 patients had significant EH, while 95 of the 252 patients had mild EH. The signs of the first affected ear of patients with bilateral EH were more apparent than those with unilateral EH. Conclusion: An intravenous gadolinium injection MRI can provide a more accurate picture of EH in MD patients. The medical characteristics of MD patients with EH confirmed by enhanced MRI did not fully comply with the current diagnostic criteria for definite MDs. The inclusion of EH in MD's diagnostic criteria may raise the diagnosis rate.

Source link: https://doi.org/10.1016/j.bjorl.2021.07.009


Neurosyphilis with ocular involvement and normal magnetic resonance imaging results affirmed by metagenomic next-generation sequencing

Therefore, finding a new test that can reveal the presence or absence of Treponema pallidum immediately for neurosyphilis diagnosis is vital. We reviewed all the patients admitted to the Sichuan Provincial People's Hospital between 2021 and 2022 who had ocular involvement and whose clinical samples were reviewed using metagenomic next-generation sequencing, and we identified 10 candidates for further investigation. The findings of magnetic resonance imaging were normal for four patients, and three of them met the diagnostic criteria for neurosyphilis identified by mNGS. One of the ten patients who was HIV positive and five others had abnormal MRI findings, according to one of the ten patients. Treponema pallidum was detected by mNGS in patients with ocular involvement and normal MRI findings for the first time, to our knowledge.

Source link: https://doi.org/10.3389/fcimb.2022.985373


Current Role of Magnetic Resonance Imaging in the Screening, Diagnosis, and Treatment of Prostate Cancer

Prostate cancer is the most common cancer in men. Diagnosis of prostate cancer is a difficult challenge, considering a variety of key metrics that must be considered, such as age, prevalence of prostate specific antigen, clinical examination, and more recently magnetic resonance imaging. In several men, the new diagnostic approach for prostate cancer has resulted in overdiagnosis and overtreatment, as well as underdiagnosis and missed diagnoses. Pathological evidence is required prior to prostate cancer diagnosis. There are several methods of prostate biopsy, the most common among them are systemic or planar prostate biopsy, and cognitive or targeted MRI-guided prostate biopsy. A mpMRI improvement has been shown by recent studies for better procedure planning regarding prostate cancer location, incidence of disease, and length of the urethra. The aim of this review is to provide a brief insight into the use of mpMRI in prostate cancer diagnosis and treatment.

Source link: https://doaj.org/article/2e03d6b153054575b3bbd94583257046


Prognostic impact of tumor size reduction assessed by magnetic resonance imaging after radiochemotherapy in patients with locally advanced cervical cancer

ObjectivePelvic magnetic resonance imaging (or not) imaging is a primary test used for the first assessment of cervical cancer loco-regional involvement in loco-regional areas. Methods was used to assess early response to radiochemotherapy in patients with locally advanced cervical cancer treated with concomitant radiochemotherapy and then closure treatment between January 2010 and December 2015 in this report. There was a difference between the disease-free and overall survival rates of patients with a tumor response greater or less than 50%. Patients with a tumor size reduction of > 50% have a 45% chance of recurrence or death reduced by 39%. These two groups of patients had a 5-year disease-free survival rate of 68. 8% and 55% respectively, respectively. Conclusion of the studyThe 5-year disease-free survival rate for these two groups of patients with cervical cancer was shown by MRI data obtained after radiochemotherapy.

Source link: https://doi.org/10.3389/fonc.2022.1046087


The role of magnetic resonance imaging in the diagnosis and prognosis of dementia

Dementia is a disorder that causes multidomain chronic cognitive impairment that has a major effect on daily life. Alzheimer's disease and nondegenerative diseases such as vascular dementia are thought to cause dementia. In addition, there is also a growing demand for MRI in the evaluation of novel therapies and their side effects. The aim of this paper is to review the available literature and summarize the specific MRI findings to help diagnose both newly diagnosed dementia and those in the early stages of disease.

Source link: https://doi.org/10.17305/bjbms.2022.8085


Design and Comparison of Different Types of Dual-Frequency Matching Networks Used in Double-Tuned Coils for Multinuclear Magnetic Resonance Imaging and Spectroscopy

A wide variety of techniques for multi-tuning coils are commonly used in multinuclear MR imaging and/or spectroscopy experiments, and a large number of multi-tuning coil designs exist. However, creating a multi-tuned coil with good results is challenging, and sensory enhancements are always desired, particularly on the X-nucleus coil due to the intrinsically lower MR sensitivity of non-proton nuclei. Despite the fact that the tuning and matching conditions were near to perfect in the S-parameters, the actual 1H SNR fell significantly due to the installed traps, though the SNRs of the 23Na frequency remained much lower, although the losses were much smaller. Additional sensitivity loss can be caused by the actual configuration of the matching circuit, according to the actual implementation of the matching scheme.

Source link: https://doi.org/10.1109/ACCESS.2022.3223731


Effects of chronic caffeine intake and withdrawal on neural activity assessed via resting-state functional magnetic resonance imaging in mice

The current study sought to assess brain function in chronic caffeine drinkers by stopping caffeine intake in chronic caffeine users in chronically caffeinated and decaffeinated groups in order to investigate changes in brain function caused by caffeine. C57BL/6J mice were included in the study, but they underwent 9. 4-T ultrahigh-field magnetic resonance imaging. In addition, caffeine use was found to stimulate the dentate gyrus, one of the hippocampal areas, as well as to decrease neural activity in specific brain regions in the current study.

Source link: https://doi.org/10.1016/j.heliyon.2022.e11714


Grading of oligodendroglioma in dogs based on magnetic resonance imaging

Abstract Background: Oligodendroglioma accounts for 22% of primary brain tumors in dogs. Objective To see if magnetic resonance imaging characteristics of dogs in OG II and III differ between OG II and III. The MRI results were compared between OG II and III using Fisher's exact tests and logistic regression algorithms. Histology analyzed 8 dogs with OG II and 24 with OG III. Between OG II and III, no difference was found in diffusion characteristics. In dogs with OG III, however not in OG II, a conclusion and clinical importance Moderate moderation (u2010-2010). Although the benefits of brain tumor grading in dogs with respect to prognosis and treatment options remain unclear, the results show that MRI represents the histological characteristics used for grading OG in dogs.

Source link: https://doi.org/10.1111/jvim.16519


Mitral Annulus Disjunction and Arrhythmic Mitral Valve Prolapse: Emerging Role of Cardiac Magnetic Resonance Imaging in the Workup

Mitral annular disjunction, characterized by the detachment of mitral annulus from left ventricular myocardium, is associated with morphological and functional reconstruction of the left ventricular myocardium. Two specific cases of arrhythmic mitral valve prolapse related to MAD are shown here. Cardiac magnetic resonance imaging enables valuable morphological data and aids in the diagnosis of fibrosis.

Source link: https://doi.org/10.1055/s-0042-1754357

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions