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Source: Insights into Imaging
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Total 20 results found since Jan 2013.
Magnetic resonance imaging of arterial stroke mimics: a pictorial review
AbstractAcute ischaemic stroke represents the most common cause of new sudden neurological deficit, but other diseases mimicking stroke happen in about one-third of the cases. Magnetic resonance imaging (MRI) is the best technique to identify those ‘stroke mimics’. In this article, we propose a diagnostic approach of those stroke mimics on MRI according to an algorithm based on diffusion-weighted imaging (DWI), which can be abnormal or normal, followed by the results of other common additional MRI sequences, such as T2 with gradient recall ed echo weighted imaging (T2-GRE) and fluid-attenuated inversion recovery (FLAIR...
Source: Insights into Imaging - June 22, 2018 Category: Radiology Source Type: research
Mapping the ischemic penumbra and predicting stroke progression in acute ischemic stroke: the overlooked role of susceptibility weighted imaging
ConclusionA positive DWI-SWI mismatch is an indicator of the ischemic penumbra and a predictor of infarct expansion if left untreated.
Source: Insights into Imaging - January 12, 2020 Category: Radiology Source Type: research
Ultrasound elastography in the assessment of post-stroke muscle stiffness: a systematic review
ConclusionUltrasound elastography is a promising imaging technology for determining the muscle stiffness in stroke survivors with need for a standardized imaging protocol.
Source: Insights into Imaging - April 5, 2022 Category: Radiology Source Type: research
ASL and susceptibility-weighted imaging contribution to the management of acute ischaemic stroke
AbstractMagnetic resonance imaging (MRI) plays a central role in the early diagnosis of cerebral vascular events. Today, MRI is used not only for the detection of acute ischaemic lesions, but also to fine tune the diagnosis and improve patient selection for early therapeutic decision-making. In this perspective, new tools such as arterial spin labelling (ASL) and susceptibility-weighted imaging (SWI) sequences have been developed. These MRI sequences enable noninvasive assessment of brain damage, providing important diagnostic and prognostic information: evaluation of cerebral parenchymal perfusion; detection and aetiologi...
Source: Insights into Imaging - November 6, 2016 Category: Radiology Source Type: research
Cost-effectiveness of artificial intelligence aided vessel occlusion detection in acute stroke: an early health technology assessment
ConclusionsAI tools for LVO detection in emergency care have the potential to improve healthcare outcomes and save costs. We demonstrate how early HTA may be applied for the evaluation of clinically applied AI software for radiology.
Source: Insights into Imaging - September 25, 2021 Category: Radiology Source Type: research
Current concepts in imaging and endovascular treatment of acute ischemic stroke: implications for the clinician
AbstractDuring the last decade, the management of acute ischemic stroke has changed dramatically, from an expectant bedside “wait and see” attitude towards active treatment, thanks to the continuous improvement of new therapeutic options. In addition to the use of intravenous (IV) thrombolysis in emergent large vessel occlusion (ELVO), endovascular therapy (EVT) has proven to be very efficient in selected acute strok e patients. The indications for EVT have progressed from the era of thrombolysis to individual patient profiling. Recently, several indication parameters, e.g., “treatment time window” or “more dista...
Source: Insights into Imaging - June 12, 2019 Category: Radiology Source Type: research
Improving the diagnosis of acute ischemic stroke on non-contrast CT using deep learning: a multicenter study
ConclusionsWith the assistance of our proposed DL model, radiologists got better performance in the detection of AIS lesions on NCCT.
Source: Insights into Imaging - December 6, 2022 Category: Radiology Source Type: research
A clinical –radiomics model based on noncontrast computed tomography to predict hemorrhagic transformation after stroke by machine learning: a multicenter study
ConclusionThe proposed clinical –radiomics model is a dependable approach that could provide risk assessment of HT for patients who receive IVT after stroke.
Source: Insights into Imaging - March 29, 2023 Category: Radiology Source Type: research
Beyond the embolus: “do not miss” diffusion abnormalities of ischaemic and non-ischaemic neurological disease
AbstractGiven the rapid evolution and technological advances in the diagnosis and treatment of acute ischaemic stroke (AIS), including the proliferation of comprehensive stroke centres and increasing emphasis on interventional stroke therapies, the need for prompt recognition of stroke due to acute large vessel occlusion has received significant attention in the recent literature. Diffusion-weighted imaging (DWI) is the gold standard for the diagnosis of acute ischaemic stroke, as images appear positive within minutes of ischaemic injury, and a high signal-to-noise ratio enables even punctate infarcts to be readily detecte...
Source: Insights into Imaging - October 6, 2017 Category: Radiology Source Type: research
Clinical applications of diffusion weighted imaging in neuroradiology
AbstractDiffusion-weighted imaging (DWI) has revolutionised stroke imaging since its introduction in the mid-1980s, and it has also become a pillar of current neuroimaging. Diffusion abnormalities represent alterations in the random movement of water molecules in tissues, revealing their microarchitecture, and occur in many neurological conditions. DWI provides useful information, increasing the sensitivity of MRI as a diagnostic tool, narrowing the differential diagnosis, providing prognostic information, aiding in treatment planning and evaluating response to treatment. Recently, there have been several technical improve...
Source: Insights into Imaging - May 30, 2018 Category: Radiology Source Type: research
Imaging adults on extracorporeal membrane oxygenation (ECMO)
This article will describe the imaging appearance of different ECMO circuits in adults as well as commonly encountered complications. If a CT (computed tomography) angiogram is being performed on these patients to evaluate for pulmonary embolism, the scan may be suboptimal from siphoning off of the contrast by the ECMO. In such cases, an optimal image can be obtained by lowering the flow rate of the ECMO circuit or by disabling the circuit for the duration of image acquisition.
Key Points
• Femoroatrial VV ECMO: femoral vein drainage cannula and right atrial return cannula.
...
Source: Insights into Imaging - October 9, 2014 Category: Radiology Source Type: research
Imaging of the ulcerated carotid atherosclerotic plaque: a review of the literature
AbstractCarotid atherosclerotic disease constitutes a major modern health problem whose diagnosis primarily relies on imaging. Grading of stenosis has been long used as the main factor for risk stratification and guiding of management. Nevertheless, increasing evidence has shown that additional plaque characteristics such as plaque composition and surface morphology play an important role in the occurrence of symptoms, justifying the term “vulnerable plaque”. Carotid plaque surface characteristics either in the form of surface irregularities or ulceration represent an important factor of vulnerability and are associate...
Source: Insights into Imaging - February 2, 2017 Category: Radiology Source Type: research
Clinical evaluation of left ventricular function and morphology using an accelerated k-t sensitivity encoding method in cardiovascular magnetic resonance
ConclusionThe accelerated k-t SENSE CMR sequence is clinically feasible and accurately quantifies LV volumes, function, and mass, with short acquisition time and good image quality.
Source: Insights into Imaging - June 12, 2019 Category: Radiology Source Type: research
Diagnostic value of alternative techniques to gadolinium-based contrast agents in MR neuroimaging—a comprehensive overview
AbstractGadolinium-based contrast agents (GBCAs) increase lesion detection and improve disease characterization for many cerebral pathologies investigated with MRI. These agents, introduced in the late 1980s, are in wide use today. However, some non-ionic linear GBCAs have been associated with the development of nephrogenic systemic fibrosis in patients with kidney failure. Gadolinium deposition has also been found in deep brain structures, although it is of unclear clinical relevance. Hence, new guidelines from the International Society for Magnetic Resonance in Medicine advocate cautious use of GBCA in clinical and resea...
Source: Insights into Imaging - August 22, 2019 Category: Radiology Source Type: research
Imaging methods used in the assessment of environmental disease networks: a brief review for clinicians
ConclusionsEnvironmental epidemiology has revealed that several organs and systems in the human body are targets of air pollutants. Current imaging methods that can assess the deleterious effects of pollutants includes a whole spectrum: radiography, US, CT and MRI. Future studies will help to reveal additional links among environmental disease networks.
Source: Insights into Imaging - February 6, 2020 Category: Radiology Source Type: research
