Topics in Magnetic Resonance Imaging最新文献_第4页

Definitive Diagnostic Evaluation of the Child With Arterial Ischemic Stroke and Approaches to Secondary Stroke Prevention. 儿童动脉缺血性脑卒中的明确诊断评价及二级脑卒中预防方法。

Topics in Magnetic Resonance Imaging Pub Date : 2021-10-01 DOI: 10.1097/RMR.0000000000000272

Sarah Lee, Prakash Muthusami, Bruce A Wasserman, Jeremy J Heit, Ronil V Chandra, Ferdinand Hui, Matias Negrotto, Todd A Abruzzo

引用次数: 1

Endovascular Thrombectomy Treatment: Beyond Early Time Windows and Small Core. 血管内取栓治疗:超越早期窗口和小核心。

Topics in Magnetic Resonance Imaging Pub Date : 2021-08-01 DOI: 10.1097/RMR.0000000000000291

Jayson Lavie, Ananth K Vellimana, Arindam Rano Chatterjee

引用次数: 0

MR Perfusion in the Evaluation of Mechanical Thrombectomy Candidacy. MR灌注评价机械性血栓切除术的可行性。

Topics in Magnetic Resonance Imaging Pub Date : 2021-08-01 DOI: 10.1097/RMR.0000000000000277

Varsha Muddasani, Adam de Havenon, J Scott McNally, Hediyeh Baradaran, Matthew D Alexander

{"title":"MR Perfusion in the Evaluation of Mechanical Thrombectomy Candidacy.","authors":"Varsha Muddasani, Adam de Havenon, J Scott McNally, Hediyeh Baradaran, Matthew D Alexander","doi":"10.1097/RMR.0000000000000277","DOIUrl":"10.1097/RMR.0000000000000277","url":null,"abstract":"Abstract: Stroke is a leading cause of disability and mortality, and the incidence of ischemic stroke is projected to continue to rise in coming decades. These projections emphasize the need for improved imaging techniques for accurate diagnosis allowing effective treatments for ischemic stroke. Ischemic stroke is commonly evaluated with computed tomography (CT) or magnetic resonance imaging (MRI). Noncontrast CT is typically used within 4.5 hours of symptom onset to identify candidates for thrombolysis. Beyond this time window, thrombolytic therapy may lead to poor outcomes if patients are not optimally selected using appropriate imaging. MRI provides an accurate method for the earliest identification of core infarct, and MR perfusion can identify salvageable hypoperfused penumbra. The prognostic value for a better outcome in these patients lies in the ability to distinguish between core infarct and salvageable brain at risk-the ischemic penumbra-which is a function of the degree of ischemia and time. Many centers underutilize MRI for acute evaluation of ischemic stroke. This review will illustrate how perfusion-diffusion mismatch calculated from diffusion-weighted MRI and MR perfusion is a reliable approach for patient selection for stroke therapy and can be performed in timeframes that are comparable to CT-based algorithms while providing potentially superior diagnostic information.","PeriodicalId":39381,"journal":{"name":"Topics in Magnetic Resonance Imaging","volume":"30 4","pages":"197-204"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8371677/pdf/nihms-1671477.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39327607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving Ischemic Stroke Care With MRI and Deep Learning Artificial Intelligence. 利用MRI和深度学习人工智能改善缺血性脑卒中护理。

Topics in Magnetic Resonance Imaging Pub Date : 2021-08-01 DOI: 10.1097/RMR.0000000000000290

Yannan Yu, Jeremy J Heit, Greg Zaharchuk

引用次数: 7

Rethinking the Collateral Vasculature Assessment in Acute Ischemic Stroke: The Comprehensive Collateral Cascade. 急性缺血性卒中侧枝血管评价的再思考:综合侧枝级联。

Topics in Magnetic Resonance Imaging Pub Date : 2021-08-01 DOI: 10.1097/RMR.0000000000000274

Tobias Djamsched Faizy, Jeremy Josef Heit

{"title":"Rethinking the Collateral Vasculature Assessment in Acute Ischemic Stroke: The Comprehensive Collateral Cascade.","authors":"Tobias Djamsched Faizy, Jeremy Josef Heit","doi":"10.1097/RMR.0000000000000274","DOIUrl":"https://doi.org/10.1097/RMR.0000000000000274","url":null,"abstract":"Abstract: Occlusion of a cervical or cerebral artery results in disruption of blood flow to the brain and may result in irreversible infarction. Intracranial pial collaterals are a network of arteries that may preserve blood flow to otherwise critically hypoperfused brain areas until vessel recanalization is achieved. The robustness of these arterial collaterals is pivotal for the survivability of ischemic brain tissue and is associated with treatment success and long-term clinical outcome. More recently, the importance of venous outflow from ischemic brain tissue has been appreciated. Arterial collaterals and venous outflow are evaluated by neuroimaging parameters, and recent imaging advances have enabled a more comprehensive assessment of the entire collateral cascade in patients with acute ischemic stroke. Here we review novel imaging biomarkers for the assessment of arterial collaterals, tissue-level collateral blood flow, and venous outflow. We also summarize how a more comprehensive assessment of the cerebral blood flow leads to a better prediction of treatment efficacy and improved clinical outcomes.","PeriodicalId":39381,"journal":{"name":"Topics in Magnetic Resonance Imaging","volume":"30 4","pages":"181-186"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39327605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Cerebral Perfusion Imaging for Intravenous Thrombolysis Treatment. 脑灌注成像在静脉溶栓治疗中的应用。

Topics in Magnetic Resonance Imaging Pub Date : 2021-08-01 DOI: 10.1097/RMR.0000000000000284

Diana E Slawski Md, Gregory W Albers Md

引用次数: 0

Doing Great With DOTATATE: Update on GA-68 DOTATATE Positron Emission Tomography/Computed Tomography and Magnetic Resonance Imaging for Evaluation of Sinonasal Tumors. 用DOTATATE做得很好:GA-68 DOTATATE正电子发射断层扫描/计算机断层扫描和磁共振成像评估鼻窦肿瘤的最新进展。

Topics in Magnetic Resonance Imaging Pub Date : 2021-06-01 DOI: 10.1097/RMR.0000000000000289

Avraham B Zlochower, Jared M Steinklein

{"title":"Doing Great With DOTATATE: Update on GA-68 DOTATATE Positron Emission Tomography/Computed Tomography and Magnetic Resonance Imaging for Evaluation of Sinonasal Tumors.","authors":"Avraham B Zlochower, Jared M Steinklein","doi":"10.1097/RMR.0000000000000289","DOIUrl":"https://doi.org/10.1097/RMR.0000000000000289","url":null,"abstract":"Abstract: Sinonasal tumors are relatively rare and radiographically challenging to evaluate due to their wide variety of pathologies and imaging features. However, sinonasal tumors possessing somatostatin receptor overexpression have the benefit of utilizing a multimodality anatomic and functional imaging for a more comprehensive evaluation. This is particularly evident with esthesioneuroblastoma, with computed tomography and magnetic resonance imaging defining the anatomic extent of the tumor, whereas somatostatin receptor imaging, particularly with gallium-68 DOTATATE positron emission tomography/computed tomography, is used to assess the presence of metastatic disease for staging purposes as well as in the surveillance for tumor recurrence. In addition, areas which accumulate gallium-68 DOTATATE are potentially amenable to treatment with peptide receptor radionuclide therapy. In this manner, a combined approach of anatomic and functional imaging is critical for optimal imaging evaluation and treatment strategy of patients with sinonasal tumors.","PeriodicalId":39381,"journal":{"name":"Topics in Magnetic Resonance Imaging","volume":"30 3","pages":"151-158"},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39068164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Olfactory Dysfunction in Neurodegenerative Disease. 神经退行性疾病中的嗅觉功能障碍。

Topics in Magnetic Resonance Imaging Pub Date : 2021-06-01 DOI: 10.1097/RMR.0000000000000271

Israel Saramago, Ana M Franceschi

引用次数: 6

MRI of the Sinonasal Cavity. 鼻腔MRI。

Topics in Magnetic Resonance Imaging Pub Date : 2021-06-01 DOI: 10.1097/RMR.0000000000000286

Claudia Francoise Eve Kirsch

引用次数: 0

MRI of Sinonasal Malignancies. 鼻腔恶性肿瘤的MRI。

Topics in Magnetic Resonance Imaging Pub Date : 2021-06-01 DOI: 10.1097/RMR.0000000000000288

Akinrinola Famuyide, Amy Juliano, Gul Moonis

{"title":"MRI of Sinonasal Malignancies.","authors":"Akinrinola Famuyide, Amy Juliano, Gul Moonis","doi":"10.1097/RMR.0000000000000288","DOIUrl":"10.1097/RMR.0000000000000288","url":null,"abstract":"Abstract: Sinonasal cavity is an important subsite in head and neck tumors. There are a myriad of malignancies that present within this area. Adequate staging for treatment planning requires multimodality evaluation. Magnetic resonance imaging (MRI) forms an important component in the evaluation of sinonasal tumors. We sought to review the most common sinonasal tumors, including sinonasal anatomy, clinical features, and common imaging features. A literature review was performed to evaluate common sinonasal tumors. Owing to the different tissue types within the sinonasal cavity, there are multiple different tumor pathologies within the sinonasal compartment. Most present in adults although some present in the young. Many of these tumor types have imaging overlaps, although some have a characteristic appearance. MRI can aid in soft tissue delineation, evaluation of multicompartmental extension, intracranial spread, and perineural spread. Sinonasal tumors are a heterogeneous group for which soft tissue delineation via MRI forms an important role in ensuring adequate treatment planning to improve outcomes, decreasing morbidity, and improve functional outcomes.","PeriodicalId":39381,"journal":{"name":"Topics in Magnetic Resonance Imaging","volume":"30 3","pages":"139-149"},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39001706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6