A Survey of Magnetic Resonance Imaging Protocols for the Investigation of Epilepsy in Canadian Academic Referral Centers

2018 ◽  
Author(s):  
Usman Khan
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Imaging Protocols

High-Resolution Magnetic Resonance Imaging of the Human Median Nerve

2004 ◽  
Vol 18 (2) ◽  
pp. 80-87 ◽  
Author(s):  
Archie Heddings ◽  
Mehmet Bilgen ◽  
Randolph Nudo ◽  
Bruce Toby ◽  
Terence McIff ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Peripheral Nerve ◽  
Median Nerve ◽  
Ex Vivo ◽  
Imaging Techniques ◽  
Proton Density ◽  
Resonance Imaging ◽  
Imaging Protocols

Objectives. It is widely accepted that peripheral nerve repairs performed within 6 weeks of injury have much better outcomes than those performed at later dates. However, there is no diagnostic technique that can determine if a traumatic peripheral nerve injury requires surgical intervention in the early postinjury phase. The objective of this article was to determine whether novel, noninvasive magnetic resonance imaging techniques could demonstrate the microstructure of human peripheral nerves that is necessary for determining prognosis and determining if surgery is indicated following traumatic injury. Methods. Ex vivo magnetic resonance imaging protocols were developed on a 9.4-T research scanner using spin-echo proton density and gradient-echo imaging sequences and a specially designed, inductively coupled radio frequency coil. These imaging protocols were applied to in situ imaging of the human median nerve in 4 fresh-frozen cadaver arms. Results. Noninvasive high-resolution images of the human median nerve were obtained. Structures in the nerve that were observed included fascicles, interfascicular epineurium, perineurium, and intrafascicular septations. Conclusion. Application of these imaging techniques to clinical scanners could provide physicians with a tool that is capable of grading the severity of nerve injuries and providing indications for surgery in the early postinjury phase.

scholarly journals Are short magnetic resonance imaging protocols the future of prostate imaging?

2020 ◽  
Vol 9 (3) ◽  
pp. 41-41
Author(s):  
Massimo Imbriaco ◽  
Arnaldo Stanzione ◽  
Virginia Tamburi ◽  
Michele Gambardella ◽  
Andrea Ponsiglione ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Prostate Imaging ◽  
Imaging Protocols ◽  
The Future

scholarly journals Magnetic resonance imaging in the assessment of acute stroke

2021 ◽  
Vol 12 (1) ◽  
pp. 12-19
Author(s):  
Majda Handanović ◽  
Fuad Julardžija ◽  
Adnan Šehić ◽  
Amela Sofić ◽  
Merim Jusufbegović ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Ischemic Stroke ◽  
Magnetic Resonance ◽  
Acute Stroke ◽  
Mri Imaging ◽  
Resonance Imaging ◽  
Imaging Protocols ◽  
Stroke Diagnosis ◽  
Selection Of Patients ◽  
Selection Of

Introduction: Stroke is the second leading underlying cause of death globally and the leading cause of disability in adults. Stroke diagnosis should be performed quickly and efficiently to eliminate other potential causes of neurological deficits and to assess the time since the onset of clinical symptoms. Computed tomography (CT) and magnetic resonance imaging (MRI) are essential methods of detecting and evaluating stroke type and treatmentoptions. Diffusion and perfusion MR imaging is recommended for early stroke diagnosis, as well as for the selection of patients for recanalization therapy, and is considered effective in assessing treatment outcomes. The objectives of this study were to demonstrate the diagnostic value of diffusion and perfusion imaging in the diagnosis of acute ischemic stroke, analyze the role of magnetic resonance imaging in the selection of patients with acute stroke for recanalization therapy, and assess the effect of acute stroke complicity.Material and methods: The research is designed as a systematic review of the primary scientific research literature, which was published in English in relevant scientific databases (PubMed, Google Scholar, Medline) from 2014 to 2021.Results: 14 scientific research papers were singled out and the general characteristics of the study were analyzed (country, authors, year of publication, title of the study, type of study, study objectives, research methods, results and conclusion). A quality assessment of the included studies with cohort design and randomized controlled studies was performed, and most belong to the category of high-quality studies with a smaller number of medium-quality studies. The overall percentage of detected AIS cases in isolated studies using the DWI and/or PWI sequence was 90.8%. At the same time, the outcome of recanalization therapy was assessed using MRI studies (the number of patients who developed adverse events with functional data outcome 30 or 90 days after the procedure was observed). Comparison of MRI and CT imaging protocols provided data on the total percentage of detected acute stroke cases using CT imaging protocols (68.9%) and MRI imaging protocols (88.5%), which is why MRI is considered a superior method.Conclusion: Although CT is a suitable method for visualizing bleeding and also for early differentiation of hemorrhagic from ischemic stroke, if MRI imaging is available, it is recommended to use DWI, PWI, MRA sequences for a more accurate diagnosis of stroke in the acute phase.

scholarly journals The Canadian Biomarker Integration Network in Depression (CAN-BIND): magnetic resonance imaging protocols

2019 ◽  
Vol 44 (4) ◽  
pp. 223-236 ◽  
Author(s):  
Glenda M. MacQueen ◽  
◽  
Stefanie Hassel ◽  
Stephen R. Arnott ◽  
Jean Addington ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Imaging Protocols

Multiple Irregular Masses

2018 ◽  
Author(s):  
Erin L. Prince ◽  
Heidi R. Umphrey
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Clinical Features ◽  
Clinical Information ◽  
Differential Diagnoses ◽  
Granulomatous Mastitis ◽  
Resonance Imaging ◽  
Imaging Protocols ◽  
Synchronous Cancers ◽  
Management Recommendations

Irregular masses seen on two-view mammography are defined as masses with margins that are neither round nor oval. They may demonstrate indistinct, microlobulated, obscured, or spiculated margins and have a variety of densities, ranging from high to low or fat density. Irregular masses tend to imply a more suspicious finding. Multiple irregular masses may be seen unilaterally or bilaterally, and are usually further evaluated with either ultrasound or magnetic resonance imaging and correlated with clinical information. The etiology of multiple irregular masses is vast. This chapter, appearing in the section on asymmetry, mass, and distortion, reviews the key imaging and clinical features, imaging protocols and pitfalls, differential diagnoses, and management recommendations for multiple irregular masses. Topics discussed include metastases, granulomatous mastitis, diabetic mastopathy, and second synchronous cancers.

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