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Source: Radiologic Clinics of North America
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Total 16 results found since Jan 2013.
Imaging Approaches for Cerebrovascular Disease: The Latest and Greatest
Stroke, including ischemic and hemorrhagic subtypes, is a leading cause of morbidity and mortality worldwide, with a variety of cerebrovascular diseases contributing to its cause. Imaging plays a central role in the diagnosis of stroke and intracranial hemorrhage and the underlying contributing cerebrovascular diseases. Imaging is also key in risk stratification of cerebrovascular lesions, treatment decision making and guidance, primary and secondary stroke prevention, treatment response assessment, and therapeutic interventions.
Source: Radiologic Clinics of North America - March 16, 2023 Category: Radiology Authors: Javier M. Romero, Mahmud Mossa-Basha Tags: Preface Source Type: research
Advanced Imaging for Acute Stroke Treatment Selection
There is constant evolution in the diagnosis and treatment of acute ischemic stroke due to advances in treatments, imaging, and outreach. Two major revolutions were the advent of intravenous thrombolysis in the 1990s and endovascular thrombectomy in 2010s. Neuroimaging approaches have also evolved with key goals —detect hemorrhage, augment thrombolysis treatment selection, detect arterial occlusion, estimate infarct core, estimate viable penumbra, and augment thrombectomy treatment selection. The ideal approach to diagnosis and treatment may differ depending on the system of care and available resources. Future direction...
Source: Radiologic Clinics of North America - March 16, 2023 Category: Radiology Authors: Robert W. Regenhardt, Christopher A. Potter, Samuel S. Huang, Michael H. Lev Source Type: research
Vessel Wall Imaging in Cryptogenic Stroke
Cryptogenic strokes are symptomatic cerebral ischemic infarcts without a clear etiology identified following standard diagnostic evaluation and currently account for 10% to 40% of stroke cases. Continued research is needed to identify and bridge gaps in knowledge of this stroke grouping. Vessel wall imaging has increasingly shown its utility in the diagnosis and characterization of various vasculopathies. Initial promising evidence suggests rational use of vessel wall imaging in stroke workup may unravel pathologies that otherwise would have been occult and further improve our understanding of underlying disease processes ...
Source: Radiologic Clinics of North America - February 20, 2023 Category: Radiology Authors: Bhagya Sannananja, Chengcheng Zhu, Mahmud Mossa-Basha Source Type: research
Current Evaluation of Intracerebral Hemorrhage
Advanced imaging is currently critical in diagnosing, predicting, and managing intracerebral hemorrhage. MD CT angiography has occupied the first line of evaluating patients with a clinical diagnosis of a stroke, given its rapid acquisition time, high resolution of vascular structures, and sensitivity for secondary causes of ICH.
Source: Radiologic Clinics of North America - February 20, 2023 Category: Radiology Authors: Javier M. Romero, Luisa F. Rojas-Serrano Source Type: research
Ischemic Infarction in Young Adults
Ischemic strokes in young adults are increasing in incidence and have emerged as a public health issue. The radiological features are not only diagnostic in identifying ischemic infarctions but also provide important clues in the investigation of the underlying causes or in the identification of risk factors. According to the different imaging patterns associated with ischemic stroke in young adults, the causes can be classified into 5 categories: cardioembolism, large vessel vasculopathy, small vessel vasculopathy, toxic-metabolic, and hypercoagulable disorders. The radiological features of each category and cause are des...
Source: Radiologic Clinics of North America - February 19, 2023 Category: Radiology Authors: Janet Yanqing Mei, Pamela W. Schaefer Source Type: research
Evaluation of Collateral Circulation in Patients with Acute Ischemic Stroke
The cerebral collateral circulation is an increasingly important consideration in the management of acute ischemic stroke and is a key determinant of outcomes. Growing evidence has demonstrated that better collaterals can predict the rate of infarct progression, degree of recanalization, the likelihood of hemorrhagic transformation and various therapeutic opportunities. Collaterals can also identify those unlikely to respond to reperfusion therapies, helping to optimize resources. More randomized trials are needed to evaluate the risks and benefits of endovascular reperfusion with consideration of collateral status. This r...
Source: Radiologic Clinics of North America - February 18, 2023 Category: Radiology Authors: Keiko A. Fukuda, David S. Liebeskind Source Type: research
Pearls and Pitfalls of Carotid Artery Imaging
Stroke represents a major cause of morbidity and mortality worldwide with carotid atherosclerosis responsible for a large proportion of ischemic strokes. Given the high burden of the disease , early diagnosis and optimal secondary prevention are essential elements in clinical practice. For a long time, the degree of stenosis had been considered the parameter to judge the severity of carotid atherosclerosis. Over the last 30 years, literature has shifted attention from stenosis to structural characteristics of atherosclerotic lesion, eventually leading to the “vulnerable plaque” model. These “vulnerable plaques” f...
Source: Radiologic Clinics of North America - February 9, 2023 Category: Radiology Authors: Riccardo Cau, Ajay Gupta, Marianne Eline Kooi, Luca Saba Source Type: research
Clinical Artificial Intelligence Applications in Radiology
This article illustrates some of these applications. This article reviews machine learning challenges related to neuroradiology. The first approval of reimbursement for an AI algorithm by the Centers for Medicare and Medicaid Services, covering a stroke software for early detection of large vessel occlusion, is also discussed.
Source: Radiologic Clinics of North America - October 22, 2021 Category: Radiology Authors: Felipe Campos Kitamura, Ian Pan, Suely Fazio Ferraciolli, Kristen W. Yeom, Nitamar Abdala Source Type: research
Imaging of Acute Stroke
This article reviews the current state of imaging for acute ischemic stroke. Protocolized imaging acquisition using computed tomography in conjunction with coordinated stroke care allows for rapid diagnosis and prompt revascularization. Following the initial evidence to support endovascular therapy for large-vessel occlusion, published between 2014 and 2015, there are now guidelines supporting treatment up to 24 hours after time of onset of symptoms. Neuroimaging remains a central component in diagnosing acute stroke and potentially excluding patients from stroke treatment, as outlined in this article.
Source: Radiologic Clinics of North America - October 1, 2019 Category: Radiology Authors: Steven Hetts, Rajkamal Khangura Source Type: research
Causes of Acute Stroke
This article reviews the imaging patterns of acute strokes, and how the infarct pattern and imaging characteristics can suggest an underlying cause.
Source: Radiologic Clinics of North America - October 1, 2019 Category: Radiology Authors: Ashley Knight-Greenfield, Joel Jose Quitlong Nario, Ajay Gupta Source Type: research
Updates in Brain Imaging
Neuroradiology has seen many advances in the past few years, placing the radiologist in a crucial role. Large trials have demonstrated the efficacy of thrombectomy for large vessel occlusions in stroke, emphasizing the importance of triaging patients for intervention. Genomics has become central to the classification of brain neoplasms, culminating in the 2016 World Health Organization classification of brain tumors. Advanced imaging techniques, such as functional MR imaging, diffusion tensor imaging, perfusion, and MR spectroscopy, have added value in tumor diagnosis, surgical planning, and surveillance.
Source: Radiologic Clinics of North America - August 25, 2019 Category: Radiology Authors: Jacqueline A. Bello, Shira E. Slasky Tags: Preface Source Type: research
Perfusion Computed Tomography in Acute Ischemic Stroke
This article reviews PCT for the evaluation of AIS patients.
Source: Radiologic Clinics of North America - July 29, 2019 Category: Radiology Authors: Jeremy J. Heit, Eric S. Sussman, Max Wintermark Source Type: research
Trauma and Emergency Radiology
I sincerely hope that the reader will enjoy this issue of Radiologic Clinics of North America, dedicated to the ongoing evolution of trauma and emergency imaging. This issue offers an in-depth, multifaceted review of a number of topics of critical importance to trauma and emergency imaging. Given the breadth of the field of trauma and emergency imaging, this issue is truly a head-to-toe endeavor, from stroke and brain trauma imaging to easily missed fractures of the pediatric foot and ankle. Furthermore, this field is inherently multimodal in nature, from radiographic examinations to cutting-edge MR imaging.
Source: Radiologic Clinics of North America - April 9, 2019 Category: Radiology Authors: Stephan W. Anderson Tags: Preface Source Type: research
Stroke Imaging
This article focuses on the role of neuroimaging in the management of patients with acute ischemic stroke.
Source: Radiologic Clinics of North America - April 7, 2019 Category: Radiology Authors: Shahmir Kamalian, Michael H. Lev Source Type: research
Carotid Ultrasound
This article reviews the pathophysiology and epidemiology of stroke, technique for performing a carotid US examination, normal findings, and diagnostic US criteria for evaluating carotid plaque, grading stenosis in the native ICA and following intervention, as well as waveform analysis of the carotid arteries.
Source: Radiologic Clinics of North America - February 22, 2019 Category: Radiology Authors: Leslie M. Scoutt, Gowthaman Gunabushanam Source Type: research
