scholarly journals The Role Of Neuro-Imaging Techniques In Prediction Of Stroke

2018 ◽  
Vol 7 (4.36) ◽  
pp. 549
Author(s):  
R. Maharishi ◽  
Maya Rathnasabapathy
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Brain Injuries ◽  
Imaging Techniques ◽  
Modern Medicine ◽  
Resonance Imaging ◽  
Neuropsychological Functions ◽  
Magnetic Resonance Imaging Mri ◽  
Neuro Imaging ◽  
Neuroimaging Techniques

At present there are many techniques and methods are used to measuring brain injuries or functions of the brain in the modern medicine scenario. A critical goal of this research study is that the stroke has classified the location and volume of the lesion for treatment. In the stroke assessment most commonly used brain imaging techniques are administered to evaluate the position of pathology and its functions. Any types of stroke it may be it will be assessed based on the Neuro-imaging methods like Computerized Tomography (CT scan), Magnetic Resonance Imaging (MRI scan), Functional Magnetic Resonance Imaging (fMRI), Electroencephalography (EEG), Tissue Plasminogen Activator (Tpa), Transcranial Magnetic Stimulation (TMS).  These neuroimaging techniques are excellent technical development to the current state wherein these methods provide physiological information highly relevant to the stroke patient. And also the study is exploring how the neuroimaging techniques are making a significant impact on the neuropsychological functions of stroke patients. 

scholarly journals Perfusion Magnetic Resonance Imaging to Assess Brain Tumor Responses to New Therapies

1998 ◽  
Vol 5 (2) ◽  
pp. 115-123 ◽  
Author(s):  
Michael H. Lev ◽  
Fred Hochberg
Keyword(s):  
Magnetic Resonance Imaging ◽  
Brain Tumor ◽  
Magnetic Resonance ◽  
Imaging Techniques ◽  
Perfusion Mri ◽  
Perfusion Magnetic Resonance Imaging ◽  
Normal Brain ◽  
Resonance Imaging ◽  
New Therapies ◽  
Magnetic Resonance Imaging Mri

Background: Although magnetic resonance imaging (MRI) is effective in detecting the location of intracranial tumors, new imaging techniques have been studied that may enhance the specificity for the prediction of histologic grade of tumor and for the distinction between recurrence and tumor necrosis associated with cancer therapy. Methods: The authors review their experience and that of others on the use of perfusion magnetic resonance imaging to evaluate responses of brain tumors to new therapies. Results: Functional imaging techniques that can distinguish tumor from normal brain tissue using physiological parameters. These new approaches provide maps of tumor perfusion to monitor the effects of novel compounds that restrict tumor angiogenesis. Conclusions: Perfusion MRI not only may be as effective as radionuclide-based techniques in sensitivity and specificity in assessing brain tumor responses to new therapies, but also may offer higher resolution and convenient co-registration with conventional MRI, as well as time- and cost-effectiveness. Further study is needed to determine the role of perfusion MRI in assessing brain tumor responses to new therapies.

scholarly journals Reasons for discordances between ultrasonography and magnetic resonance imaging in the evaluation of the ankle, hindfoot and heel of the patients with rheumatoid arthritis

2019 ◽  
Vol 21 (4) ◽  
pp. 405 ◽  
Author(s):  
Oana Șerban ◽  
Daniela Fodor ◽  
Iulia Papp ◽  
Mihaela Cosmina Micu ◽  
Dan Gabriel Duma ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Disease Activity ◽  
Activity Index ◽  
Imaging Techniques ◽  
Disease Activity Index ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
Definition Of

Aim: To compare the ultrasonography (US) performance with magnetic resonance imaging (MRI) in identifying pathology in ankles, hindfeet and heels of rheumatoid arthritis (RA) patients and to evaluate the reasons for discordances between the two imaging methods.Material and methods: RA patients were enrolled and evaluated using the Clinical Disease Activity Index (CDAI) and the Disease Activity Score 28 with C-reactive Protein (DAS28-CRP). The ankle (tibiotalar joint, tendons), hindfoot (talonavicular, subtalar joints) and heel of the most symptomatic or dominant foot (for the asymptomatic patient)were evaluated by two pairs of examiners using US and contrast-enhanced MRI.Results: Totally, 105 joints, 245 tendons and 35 heels in 35 patients [mean age 59.2±11.25 years old, median disease duration 36 (16.5-114), mean CDAI 19.87±12.7] were evaluated. The interobserver agreements between the two sonographers, and the two radiologists were good and very good (k=0.624-0.940). The overall agreement between US and MRI was very good for subcalcaneal panniculitis (k=0.928, p<0.001), moderate for synovitis (k=0.463, p<0.001) and tenosynovitis (k=0.514, p<0.001), fair for osteophytes (k=0.260, p=0.004), and poor for erosions (k=0.063, p=0.308) and heel’s structures. MRI found more erosions, synovitis, osteophytes,tenosynovitis and retrocalcaneal bursitis, but US found more enthesophytes and plantar fasciitis. Many of the discordancesbetween the two imaging techniques have explanations related to the technique itself or definition of the pathologic findings.Conclusions: US is comparable to MRI for the evaluation of ankle, hindfoot and heel in RA patients and discordances in theinterpretation of the pathological findings/normal structures must be carefully analyzed.

scholarly journals Magnetic resonance imaging of salivary glands

2019 ◽  
Author(s):  
Danielle Ayumi Nishimura ◽  
Ana Luiza Esteves Carneiro ◽  
Kaisermann Costa ◽  
Wladimir Gushiken de Campos ◽  
Jefferson Xavier de Oliveira ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Salivary Glands ◽  
Imaging Techniques ◽  
Neck Region ◽  
Evaluation Instrument ◽  
Resonance Imaging ◽  
Tissue Contrast ◽  
Excellent Method ◽  
Magnetic Resonance Imaging Mri

Salivary glands tumors account for 2-5% of tumors in the head and neck region, possibly being benign or malignant. Magnetic resonance imaging (MRI) presents high soft tissue contrast resolution, thus being an excellent method for salivary gland analysis. The objective of this literature review is to analyze MRI as an evaluation instrument for the diagnosis of salivary glands lesions. Compared to other imaging techniques, MRI can better evaluate the relationship between adjacent anatomical structures, presenting greater sensitivity and specificity.

scholarly journals Magnetic Resonance Imaging of Rectal Cancer

2019 ◽  
Vol 02 (01) ◽  
pp. 018-032
Author(s):  
Ekta Maheshwari ◽  
Gitanjali Bajaj ◽  
Kedar Jambhekar ◽  
Tarun Pandey ◽  
Roopa Ram
Keyword(s):  
Magnetic Resonance Imaging ◽  
Rectal Cancer ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Imaging Techniques ◽  
Postoperative Recurrence ◽  
Response To Therapy ◽  
Resonance Imaging ◽  
Primary Rectal Cancer ◽  
Magnetic Resonance Imaging Mri

AbstractHigh-resolution magnetic resonance imaging (MRI) plays a pivotal role in the pretreatment assessment of primary rectal cancer. The success of this technique depends on obtaining good-quality high-resolution T2-weighted images of the primary tumor, orthogonal to rectal lumen. The goal of magnetic resonance staging is to identify patients who will benefit from neoadjuvant therapy prior to surgery to minimize postoperative recurrence and planning of optimal surgical approach. MRI also facilitates optimal identification of important prognostic factors, which improves both treatment selection and posttreatment follow-up. The objective of this article is to review the existing literature and provide a concise update on various aspects of rectal cancer imaging, discuss the current role of advanced imaging techniques such as diffusion-weighted and perfusion imaging in the evaluation of rectal cancer, and to assess response to therapy.

scholarly journals Repeated mild traumatic brain injuries induce persistent changes in plasma protein and magnetic resonance imaging biomarkers in the rat

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
David K. Wright ◽  
Rhys D. Brady ◽  
Alaa Kamnaksh ◽  
Jack Trezise ◽  
Mujun Sun ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Plasma Protein ◽  
Brain Injuries ◽  
Imaging Biomarkers ◽  
Resonance Imaging ◽  
Transient Nature ◽  
Neurological Abnormalities ◽  
Magnetic Resonance Imaging Mri ◽  
And Diffusion

Abstract A single mild traumatic brain injury (mTBI) typically causes only transient symptoms, but repeated mTBI (RmTBI) is associated with cumulative and chronic neurological abnormalities. Clinical management of mTBI is challenging due to the heterogeneous, subjective and transient nature of symptoms, and thus would be aided by objective biomarkers. Promising biomarkers including advanced magnetic resonance imaging (MRI) and plasma levels of select proteins were examined here in a rat model of RmTBI. Rats received either two mild fluid percussion or sham injuries administered five days apart. Rats underwent MRI and behavioral testing 1, 3, 5, 7, and 30 days after the second injury and blood samples were collected on days 1, 7, and 30. Structural and diffusion-weighted MRI revealed that RmTBI rats had abnormalities in the cortex and corpus callosum. Proteomic analysis of plasma found that RmTBI rats had abnormalities in markers indicating axonal and vascular injury, metabolic and mitochondrial dysfunction, and glial reactivity. These changes occurred in the presence of ongoing cognitive and sensorimotor deficits in the RmTBI rats. Our findings demonstrate that RmTBI can result in chronic neurological abnormalities, provide insight into potential contributing pathophysiological mechanisms, and supports the use of MRI and plasma protein measures as RmTBI biomarkers.

Ruptured aneurysm of noncoronary sinus of valsalva: demonstration with magnetic resonance imaging

2008 ◽  
Vol 49 (8) ◽  
pp. 889-892 ◽  
Author(s):  
T. C. Dincer ◽  
I. Basarici ◽  
C. Calisir ◽  
A. Mete ◽  
C. Ermis ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Imaging Techniques ◽  
Sinus Of Valsalva ◽  
Resonance Imaging ◽  
Conventional Angiography ◽  
Rare Lesion ◽  
Magnetic Resonance Imaging Mri ◽  
The Right ◽  
Diagnostic Importance

There are few published reports regarding imaging findings of sinus of Valsalva aneurysms (SVA) with magnetic resonance imaging (MRI). We present an unusual form of ruptured SVA, emphasizing the diagnostic importance of MRI among a range of imaging techniques. This case report describes a case of idiopathic (thought to be congenital in origin), acutely symptomatic ruptured noncoronary SVA diagnosed by MRI and confirmed with conventional angiography and surgery. MRI accurately showed aneurysm size, location, and rupture into the right atrium and provided valuable information about this rare lesion.

C6-P-04Tri-modal imaging techniques Cathodoluminescence (CL) - Near Infrared (NIR) and Magnetic resonance imaging (MRI) with lanthanides doped Gd2O3

Microscopy ◽  
2015 ◽  
Vol 64 (suppl 1) ◽  
pp. i142.1-i142
Author(s):  
Doan Thi Kim Dung ◽  
Shoichiro Fukushima ◽  
Taichi Furukawa ◽  
Hirohiko Niioka ◽  
Masayoshi Ichimiya ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Near Infrared ◽  
Imaging Techniques ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri

Comparison Between Ultrasonography and Magnetic Resonance Imaging in Achilles Tendon

2021 ◽  
Vol 11 (8) ◽  
pp. 2062-2066
Author(s):  
Jianhua Ying ◽  
Gusztáv Fekete
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Achilles Tendon ◽  
Imaging Techniques ◽  
Effective Means ◽  
Resonance Imaging ◽  
The Us ◽  
Diagnostic Role ◽  
Magnetic Resonance Imaging Mri ◽  
Tendon Pathology

Purpose: This study aims was to compared the effectiveness of Magnetic Resonance Imaging (MRI) and Ultrasonography (US) imaging techniques in the diagnosis of tendon pathology. Method: The databases search of PubMed, Scopus, and Embase extracted 567 articles for a title and abstract review. After removing and evaluating, a total of 6 articles were collected. Results and conclusion: There are three views on the diagnosis of Achilles tendon (AT) by US and MRI: US has higher sensitivity and reliability than MRI; MRI is more effective than the US, and there is a similar diagnosis result between US and MRI. It may not be necessary to distinguish between the diagnostic role of US and MRI, since US and MRI tools can be used as effective means to provide valuable information for the diagnosis and treatment of AT.

Discrepancy between Computed Tomography and Magnetic Resonance Imaging in a Case of Medulloblastoma

Neurosurgery ◽  
1985 ◽  
Vol 17 (3) ◽  
pp. 487-489 ◽  
Author(s):  
Michael D. Heafner ◽  
Luis Schut ◽  
Roger J. Packer ◽  
Derek A. Bruce ◽  
Larissa T. Bilaniuk ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Brain Stem ◽  
Posterior Fossa ◽  
Imaging Techniques ◽  
Signs And Symptoms ◽  
Brain Stem Glioma ◽  
Resonance Imaging ◽  
Computed Tomographic ◽  
Magnetic Resonance Imaging Mri

Abstract In a 2-year-old girl with signs and symptoms of a posterior fossa tumor, the computed tomographic scan showed what appeared to be a brain stem glioma. However, magnetic resonance imaging (MRI) demonstrated the lesion to be extrinsic to the brain stem. Posterior fossa exploration disclosed a medulloblastoma filling the 4th ventricle. This discrepancy in imaging techniques points out the usefulness of MRI in the evaluation and treatment of posterior fossa lesions.

scholarly journals Cardiac magnetic resonance imaging in patients with hypertrophic cardiomyopathy: diagnostic and prognostic value

2019 ◽  
pp. 131-136
Author(s):  
S. V. Shayakhmetova ◽  
V. E. Sinitsyn ◽  
A. V. Afanasyev
Keyword(s):  
Magnetic Resonance Imaging ◽  
Cardiac Magnetic Resonance ◽  
Hypertrophic Cardiomyopathy ◽  
Magnetic Resonance ◽  
Cardiac Magnetic Resonance Imaging ◽  
Imaging Techniques ◽  
Prognostic Significance ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
Diagnostic And Prognostic Value

Imaging techniques currently play a key role in cardiovascular assessing. Cardiac magnetic resonance imaging (MRI) is one the main elements of diagnosis and prognostic significance of hypertrophic cardiomyopathy (HCMP). The article provides a brief overview on both conventional and novel areas of MRI use in HCMP patients. Particular attention is paid to the MRI role in the patient selection for the surgical treatment. 

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