scholarly journals Molecular and Nonmolecular Magnetic Resonance Coronary and Carotid Imaging

2019 ◽  
Vol 39 (4) ◽  
pp. 569-582 ◽  
Author(s):  
Reza Hajhosseiny ◽  
Tamanna S. Bahaei ◽  
Claudia Prieto ◽  
René M. Botnar
Keyword(s):  
Magnetic Resonance ◽  
Plaque Characterization ◽  
Resonance Imaging ◽  
Research Attention ◽  
The Past ◽  
Arterial Lumen ◽  
Cardiovascular Morbidity And Mortality ◽  
Tissue Contrast ◽  
Magnetic Resonance Imaging Mri ◽  
Atherosclerosis Imaging

Atherosclerosis is the leading cause of cardiovascular morbidity and mortality. Over the past 2 decades, increasing research attention is converging on the early detection and monitoring of atherosclerotic plaque. Among several invasive and noninvasive imaging modalities, magnetic resonance imaging (MRI) is emerging as a promising option. Advantages include its versatility, excellent soft tissue contrast for plaque characterization and lack of ionizing radiation. In this review, we will explore the recent advances in multicontrast and multiparametric imaging sequences that are bringing the aspiration of simultaneous arterial lumen, vessel wall, and plaque characterization closer to clinical feasibility. We also discuss the latest advances in molecular magnetic resonance and multimodal atherosclerosis imaging.

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.

Neurogenic Stuttering: Further Corroboration of Site of Lesion

1996 ◽  
Vol 75 (3) ◽  
pp. 161-168 ◽  
Author(s):  
Reinhardt J. Heuer ◽  
Robert Thayer Sataloff ◽  
Steven Mandel ◽  
Nancy Travers
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Past Century ◽  
Unilateral Lesion ◽  
Resonance Imaging ◽  
The Past ◽  
Magnetic Resonance Imaging Mri

Cases of neurogenic stuttering have been reported in the literature throughout the past century. Site(s) of lesion(s) have been documented usually by association of symptoms, EEG studies and occasionally by computed tomography (CT). The authors present three cases in which the site(s) of lesion(s) are documented by CT, magnetic resonance imaging (MRI) and SPECT. This study supports previous findings of neurogenic stuttering following either bilateral diffuse lesions or a unilateral lesion. In at least one case, the actual site of the lesion would have been missed without the use of SPECT testing. EEG studies were not helpful in identifying the site of the lesion.

Enhanced magnetic resonance imaging in multiple sclerosis

2000 ◽  
Vol 6 (5) ◽  
pp. 320-326 ◽  
Author(s):  
M Filippi
Keyword(s):  
Magnetic Resonance Imaging ◽  
Multiple Sclerosis ◽  
Magnetic Resonance ◽  
Tissue Loss ◽  
Resonance Imaging ◽  
The Past ◽  
Magnetic Resonance Imaging Mri ◽  
The One ◽  
The Relationship

Gadolinium-enhanced magnetic resonance imaging (MRI) is very sensitive in the detection of active lesions of multiple sclerosis (MS) and has become a valuable tool to monitor the evolution of the disease either natural or modified by treatment. In the past few years, several studies, on the one hand, have assessed several ways to increase the sensitivity of enhanced MRI to disease activity and, on the other, have investigated in vivo the nature and evolution of enhancing lesions using different non-conventional MR techniques to better define the relationship between enhancement and tissue loss in MS. The present review is a summary of these studies whose results are discussed in the context of MS clinical trial planning and monitoring.

Magnetic resonance imaging in gynecological practice

1997 ◽  
Vol 78 (6) ◽  
pp. 439-441
Author(s):  
A. T. Valiullina ◽  
L. M. Tukhvatullina ◽  
R. F. Bakhtiozin ◽  
I. R. Chuvashaev
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Soft Tissues ◽  
Dynamic Control ◽  
Anatomical Structure ◽  
Resonance Imaging ◽  
Noninvasive Diagnostics ◽  
Tissue Contrast ◽  
Magnetic Resonance Imaging Mri ◽  
Natural Tissue

Magnetic resonance imaging (MRI) has become one of the leading methods of noninvasive diagnostics in the last 10 years. Interest in this type of examination is due to its great potential possibilities: absence of radiation exposure, high natural tissue contrast, obtaining sections of any orientation, possibility of multiple examination and dynamic control, determining not only the anatomical structure of soft tissues, but also their chemical composition.

Magnetic Resonance Imaging Contrast Agents and the Nuclear Pharmacist

1989 ◽  
Vol 2 (3) ◽  
pp. 191-195
Author(s):  
Jeffrey A. Clanton
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Contrast Agents ◽  
Resonance Imaging ◽  
Specific Group ◽  
The Past ◽  
Iodinated Contrast ◽  
Magnetic Resonance Imaging Contrast ◽  
Magnetic Resonance Imaging Mri ◽  
Insight Into

The nuclear pharmacist works with a very specific group of drugs. These drugs generally exhibit no toxic effects and are used almost exclusively for diagnosis. In the past these have been the radioactive drugs used in nuclear medicine and the iodinated contrast agents used in radiology. However, with the advent of magnetic resonance imaging (MRI), there is an additional class of drugs used in radiology, the magnetopharmaceuticals. These drugs are designed especially for increasing diagnostic sensitivity with MRI. This article is intended to provide topical insight into the basics of MRI and magnetopharmaceuticals.

Diagnostic Accuracy of Diffusion Weighted Sequences of Magnetic Resonance Imaging (MRI) in Patients of Acute Brain Infarct

2020 ◽  
pp. 9-14
Author(s):  
OJS Admin
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Diagnostic Imaging ◽  
Resonance Imaging ◽  
Brain Infarct ◽  
Non Invasive ◽  
The Past ◽  
Recent Advancement ◽  
Magnetic Resonance Imaging Mri ◽  
Weighted Sequences

Stroke is typically the most frequent cause of disability and fth leading cause of death in the past, early detection of acute brain infarct may be challenging for non-invasive diagnostic imaging, but recent  advancement in diagnostic imaging makes it possible.

Magnetic Resonance Imaging and the Neonate

2003 ◽  
Vol 22 (1) ◽  
pp. 9-18 ◽  
Author(s):  
Isabell Purdy ◽  
Dorothy Wiley
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Advantages And Disadvantages ◽  
The Past ◽  
Invaluable Tool ◽  
Mri Scans ◽  
Patient Advocates ◽  
Research Questions ◽  
Magnetic Resonance Imaging Mri

Over the past decade, advances in neuroimaging have given birth to a new field of diagnostic pediatric neurologic assessment that includes magnetic resonance imaging (MRI). This invaluable tool helps medical professionals to resolve many clinical and research questions related to neonatal neurodevelopment that other imaging technology cannot explain. Nurses and others who accompany infants to MRI would benefit from a better understanding of early neurodevelopment and of the neuroimaging procedure. Knowing the advantages and disadvantages of MRI techniques can help nurses be better patient advocates, parent liaisons, and caregivers to infants having MRI scans.

scholarly journals Nanoparticle-Based Paramagnetic Contrast Agents for Magnetic Resonance Imaging

2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Juan Pellico ◽  
Connor M. Ellis ◽  
Jason J. Davis
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Contrast Agents ◽  
Imaging Modality ◽  
Relaxation Times ◽  
Deep Penetration ◽  
Resonance Imaging ◽  
Tissue Contrast ◽  
Recent Developments ◽  
Magnetic Resonance Imaging Mri

Magnetic resonance imaging (MRI) is a noninvasive medical imaging modality that is routinely used in clinics, providing anatomical information with micron resolution, soft tissue contrast, and deep penetration. Exogenous contrast agents increase image contrast by shortening longitudinal (T1) and transversal (T2) relaxation times. Most of the T1 agents used in clinical MRI are based on paramagnetic lanthanide complexes (largely Gd-based). In moving to translatable formats of reduced toxicity, greater chemical stability, longer circulation times, higher contrast, more controlled functionalisation and additional imaging modalities, considerable effort has been applied to the development of nanoparticles bearing paramagnetic ions. This review summarises the most relevant examples in the synthesis and biomedical applications of paramagnetic nanoparticles as contrast agents for MRI and multimodal imaging. It includes the most recent developments in the field of production of agents with high relaxivities, which are key for effective contrast enhancement, exemplified through clinically relevant examples.

Magnetic resonance imaging of the gallbladder: spectrum of abnormalities

2007 ◽  
Vol 48 (5) ◽  
pp. 476-482 ◽  
Author(s):  
K. M. Elsayes ◽  
E. P. Oliveira ◽  
V. R. Narra ◽  
F. M. EL-Merhi ◽  
J. J. Brown
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Clinical Symptoms ◽  
Malignant Tumors ◽  
Gallbladder Wall ◽  
Diagnostic Study ◽  
Resonance Imaging ◽  
Mr Cholangiopancreatography ◽  
Tissue Contrast ◽  
Magnetic Resonance Imaging Mri

Various pathologies involving the gallbladder can manifest clinically, producing nonspecific clinical symptoms and making diagnosis difficult and challenging. Real-time sonography is the most widely used diagnostic study for the gallbladder and the primary screening examination of choice. With increasing use of magnetic resonance imaging (MRI) and MR cholangiopancreatography (MRCP), gallbladder pathology is frequently seen. Understanding the basic patterns of various disease manifestations and appearance on MRI is the key to making an accurate diagnosis. Given its inherent tissue contrast and contrast sensitivity, MRI in conjunction with MRCP can be a very valuable test in evaluating gallbladder pathology. Gallbladder pathology can be classified into congenital (such as absence), inflammatory (acute, hemorrhagic, and chronic cholecystitis), traumatic, benign (polyps) and malignant tumors (gallbladder carcinoma and lymphoma), and other disease processes can be seen in cholelithiasis, cholesterosis, thickened gallbladder wall, and Mirrizzi syndrome.

What are the current and future requirements for magnetic resonance imaging interpretation skills in radiotherapy? A critical review

2016 ◽  
Vol 16 (1) ◽  
pp. 79-84 ◽  
Author(s):  
Aston M. Midon ◽  
Pete Bridge ◽  
Mark Warren
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Critical Review ◽  
Resonance Imaging ◽  
Head And Neck Tumours ◽  
Image Guided Radiotherapy ◽  
Tissue Contrast ◽  
Magnetic Resonance Imaging Mri ◽  
Published Research

AbstractPurposeIncreasing usage of magnetic resonance imaging (MRI) in radiotherapy (RT) and the advent of MRI-based image-guided radiotherapy (IGRT) suggests a need for additional training within the RT profession. This critical review aimed to identify potential gaps in knowledge by evaluating the current skill base in MRI among therapeutic radiographers as evidenced by published research.MethodsPapers related to MRI usage were retrieved. Topic areas included outlining, planning and IGRT; diagnosis, follow-up and staging-related papers were excluded. After selection and further text analysis, papers were grouped by tumour site and year of publication.ResultsThe literature search and filtering resulted in a total of 123 papers, of which 66 were related to ‘outlining’, 37 to ‘planning’ and 20 to ‘IGRT’. The main sites of existing MRI expertise in RT were brain, central nervous system, prostate, and head and neck tumours. Expertise was clearly related to regions where MRI offered improved soft-tissue contrast. MRI studies within RT have been published from 2007 onwards at a steadily increasing rate.ConclusionCurrent use of MRI in RT is mainly restricted to sites where MRI offers a considerable imaging advantage over computed tomography. Given the changing use of MRI for image guidance, emerging therapeutic radiographers will require training in MRI interpretation across a wider range of anatomical regions.

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