Abstract：
:Since acute stroke and transient ischemic attack (TIA) are disruptions of brain hemodynamics, perfusion neuroimaging might be of clinical utility. Recently, arterial spin labeling (ASL), a noncontrast perfusion method, has become clinically feasible. It has advantages compared to contrast bolus perfusion-weighted imaging (PWI) including lack of exposure to gadolinium, improved quantitation, and decreased sensitivity to susceptibility and motion. Drawbacks include reduced signal-to-noise and high sensitivity to arterial transit delays. However, this sensitivity can enable visualization of collateral flow. This article discusses ASL findings in patients with acute stroke and TIA, focusing on typical appearances, common artifacts, and comparisons with PWI.
journal_name
Neuroimaging Clin N Amjournal_title
Neuroimaging clinics of North Americaauthors
Zaharchuk Gdoi
10.1016/j.nic.2011.01.003subject
Has Abstractpub_date
2011-05-01 00:00:00pages
285-301, xissue
2eissn
1052-5149issn
1557-9867pii
S1052-5149(11)00004-9journal_volume
21pub_type
杂志文章,评审abstract：:The most feared complication after acute ischemic stroke is symptomatic or asymptomatic hemorrhagic conversion. Neuroimaging and clinical criteria are used to predict development of hemorrhage. Seizures after acute ischemic stroke or stroke-like symptoms from seizures are not common but may lead to confusion in the pe...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.nic.2018.06.007
更新日期：2018-11-01 00:00:00
abstract：:Functional MR imaging (fMRI) is being used increasingly to explore the human central auditory system. The considerable background noise produced by echo-planar imaging (EPI) and other fMRI sequences, however, interferes in an unpredictable way with the experimental stimuli. Several approaches exist to overcome this pr...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：2001-05-01 00:00:00
abstract：:The neuroimaging of hydrocephalus from the perspective of the pediatric neurosurgeon is discussed. Processes with new developments in therapy and imaging are described, including congenital causes of hydrocephalus, unilateral hydrocephalus, trapped fourth ventricle, and benign external hydrocephalus. ...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1999-02-01 00:00:00
abstract：:The salivary glands play an important role in digestion and oral hygiene, and give rise to a variety of benign and malignant pathologies. In suspected pathology, the goal of imaging is to confirm a lesion as being of salivary gland origin, narrow the list of differential considerations, define the extent of disease, a...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.nic.2018.01.001
更新日期：2018-05-01 00:00:00
abstract：:In addition to basic image-guided injections, there are many advanced procedures to address the challenges of spine pain. Patients with debilitating symptoms are offered relief, a shorter recovery period, and fewer potential complications. Pain arises from numerous sites along the spine, presenting as spine pain or ra...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.nic.2019.07.005
更新日期：2019-11-01 00:00:00
abstract：:Diffusion imaging is a functional MR imaging tool that creates tissue contrast representative of the random, microscopic translational motion of water molecules within human body tissues. Long considered a cornerstone MR imaging sequence for brain imaging, diffusion-weighted imaging (DWI) increasingly is used for head...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.nic.2020.04.001
更新日期：2020-08-01 00:00:00
abstract：:More studies on the natural history of carotid artery plaques are needed to predict more reliably which plaque types or features are the most dangerous (see Table 2). Studies on carotid and coronary endarterectomy specimens indicate a dynamic process of rupture, thrombus formation, healing, and remodeling of the plaqu...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/s1052-5149(02)00015-1
更新日期：2002-08-01 00:00:00
abstract：:Neuro-otologists rely on the expertise and judgment of a skilled neuroradiologist to identify radiographic abnormalities in the complicated regional anatomy of the temporal bone and middle and posterior fossa, and more importantly, to alert the surgeon to potential operative pitfalls. This article highlights some of t...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.nic.2018.09.008
更新日期：2019-02-01 00:00:00
abstract：:Imaging evaluation of the postoperative orbit remains challenging even for the expert neuroradiologist. This article provides a simplified framework for understanding the complex postoperative appearances of the orbit, in an attempt to enhance the diagnostic accuracy of postoperative computed tomography and MR imaging...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.nic.2015.05.008
更新日期：2015-08-01 00:00:00
abstract：:Fetal MR imaging is complementary to obstetric ultrasonography. The additional information provided by in utero MR imaging may alter prenatal, perinatal, or immediate postnatal management. For example, the MR imaging findings may affect the decision to continue the pregnancy, change the mode, timing, or location of de...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.nic.2004.03.006
更新日期：2004-05-01 00:00:00
abstract：:The strength duration relationship for peripheral nerve stimulation by MR imaging pulsed gradient magnetic fields was measured in 84 human subjects. The data were fitted to the hyperbolic strength-duration relationship: dB/dt=b(1 + c/d), where b is rheobase, c is chronaxie, and d is duration, and dB/dt is reported as ...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章
doi：
更新日期：1999-05-01 00:00:00
abstract：:Different types of malformations share a dilated vein of Galen, but only one of them is a true vein of Galen aneurysmal malformation (VGAM). The optimal window of opportunity for treatment is between 4 and 5 years of months [corrected], because this allows the child to grow and mature. Heart failure and hydrocephalus ...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.nic.2007.02.005
更新日期：2007-05-01 00:00:00
abstract：:This article reviews the scientific evidence behind the diagnostic tools available for the appropriate workup and management of patients with occult spinal dysraphism (OSD). The diagnostic tools include the use of detailed history and physical examination, plain films, ultrasound, MR imaging, and neurophysiologic test...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/s1052-5149(03)00028-5
更新日期：2003-05-01 00:00:00
abstract：:Pyogenic spondylitis and discitis are usually seen following a recent infection or surgery. A septic embolus causes an infarcted area within the bone. Pyogenic spondylitis is characterized by edema, vascular leakage, and supportive inflammatory reaction characterized with polymorphonuclear leukocytes. In tuberculosis ...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.nic.2015.01.011
更新日期：2015-05-01 00:00:00
abstract：:It is difficult to justify maintaining a clinical functional magnetic resonance imaging (fMRI) program based solely on revenue generation. The use of fMRI is, therefore, based mostly in patient care considerations, leading to better outcomes. The high costs of the top-of-the-line equipment, hardware, and software need...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.nic.2014.07.007
更新日期：2014-11-01 00:00:00
abstract：:Only through a combined understanding of contrast agent properties and fundamental contrast mechanisms, optimal administration and imaging techniques can be applied to contrast-enhanced MR imaging. It is impossible to cover all aspects of the physics of paramagnetic contrast agents in a short review. The basic theorie...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1994-02-01 00:00:00
abstract：:Neoplastic and non-neoplastic lesions may involve the minor salivary glands. Tumors of minor salivary glands are commonly seen in the oral cavity. Malignant tumors are more common than benign minor salivary gland tumors. The most common malignant tumors are adenoid cystic carcinoma and mucoepidermoid carcinoma, and th...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.nic.2018.01.008
更新日期：2018-05-01 00:00:00
abstract：:Pulsatile tinnitus from intracranial venous abnormalities is an uncommon cause of pulse synchronous tinnitus. Endovascular therapies may have applications in many of these disease conditions. They have the advantage of being minimally invasive and may selectively eliminate the site of turbulence. Venous stenting has b...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.nic.2015.12.007
更新日期：2016-05-01 00:00:00
abstract：:Oral cavity cancer comprises nearly 30% of all malignant tumors of the head and neck. After a definitive diagnosis has been made, imaging is essential for staging the primary tumor by evaluating submucosal spread and invasion of adjacent structures, and to identify nodal or distant metastasis. Oral cavity anatomy is o...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.nic.2012.08.004
更新日期：2013-02-01 00:00:00
abstract：:Cerebral aneurysms can present in a variety of special circumstances. Aneurysmal subarachnoid hemorrhage (SAH) can complicate systemic or neoplastic disease, head injuries, arterial dissection, and other cerebrovascular conditions. Aneurysms associated with non-saccular configuration or giant size can make surgical or...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1997-11-01 00:00:00
abstract：:The etiology and types of intracranial vasculitis are described, along with a neuroimaging-oriented classification system. Specific entities are discussed in detail. The role of various modalities is defined, as well as a practical approach to diagnosis. ...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1994-11-01 00:00:00
abstract：:Classical descriptions of the temporal bone are based on its five embryologically distinct osseous components: the petrous, tympanic, mastoid, squamous, and styloid portions. ...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章
doi：10.1016/j.nic.2004.07.008
更新日期：2004-11-01 00:00:00
abstract：:The cerebral cortex develops in several stages from a pseudostratified epithelium at 5 weeks to an essentially complete cortex at 47 weeks. Cortical connectivity starts with thalamocortical connections in the 3rd trimester only and continues until well after birth. Vascularity adapts to proliferation and connectivity....
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.nic.2011.05.014
更新日期：2011-08-01 00:00:00
abstract：:Data from intravenous tissue plasminogen activator studies have shown rapidly diminishing clinical benefit beyond 3 hours when noncontrast CT is used for treatment triage. Newer trials, such as the Desmoteplase in Acute Ischemic Stroke trial, have now successfully pushed the time window out to 9 hours using the concep...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.nic.2005.08.002
更新日期：2005-08-01 00:00:00
abstract：:This article focuses on the indications for anterior cervical surgery, relevant surgical anatomy, a brief description of the technique of anterior surgery followed by a discussion of results and complications. It is hoped that the reader will achieve a better understanding for the clinical syndrome of cervical disc de...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：
更新日期：1995-08-01 00:00:00
abstract：:By harnessing the versatility and soft tissue imaging capabilities of MR imaging alongside the unmatched sensitivity and biomolecular flexibility of PET, the potential to provide detailed multiparametric plaque characterization in the carotid arteries is clear. The ability to acquire simultaneous, and dynamic multimod...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.nic.2015.09.005
更新日期：2016-02-01 00:00:00
abstract：:This article discusses the normal anatomy of the posterior fossa structures followed by a discussion of the characteristic neuroimaging features of a variety of cerebellar and brainstem malformations. In this context, the authors classify posterior fossa malformations based on the neuroimaging pattern into (1) predomi...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.nic.2019.03.008
更新日期：2019-08-01 00:00:00
abstract：:The use of biomarkers of microvascular structure and function from perfusion and permeability imaging is now well established in neuro-oncological research. There remain significant challenges to be overcome before these techniques and related biomarkers can find general clinical acceptance. Core to this is the standa...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.nic.2010.04.008
更新日期：2010-08-01 00:00:00
abstract：:This article reviews the essential primary and secondary injuries attributable to traumatic brain injury (TBI) which causes one third of all injury deaths in the United States. Motor vehicle crashes, falls, assaults, guns, sports, and recreational activities are the major causes of TBI. Secondary peak incidences of TB...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/s1052-5149(02)00009-6
更新日期：2002-05-01 00:00:00
abstract：:Pyomyositis is the primary infection of the skeletal muscle. It is common in the tropics, but is increasingly being reported worldwide. It can affect immunocompromised and immunocompetent individuals. Staphylococcus aureus is the most common causative organism. Muscle histology and its culture remain the gold standard...
journal_title：Neuroimaging clinics of North America
pub_type： 杂志文章,评审
doi：10.1016/j.nic.2011.07.011
更新日期：2011-11-01 00:00:00
