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Neuroimaging Clinics of North America

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https://read.qxmd.com/read/30466648/hear-and-now
#1
EDITORIAL
Gul Moonis, Amy Fan-Yee Juliano
No abstract text is available yet for this article.
February 2019: Neuroimaging Clinics of North America
https://read.qxmd.com/read/30466647/update-on-temporal-bone-imaging-with-emphasis-on-clinical-and-surgical-perspectives
#2
EDITORIAL
Suresh K Mukherji
No abstract text is available yet for this article.
February 2019: Neuroimaging Clinics of North America
https://read.qxmd.com/read/30466646/arterial-anomalies-of-the-middle-ear-a-pictorial-review-with-clinical-embryologic-and-imaging-correlation
#3
REVIEW
Anne Marie Sullivan, Hugh D Curtin, Gul Moonis
The differential diagnosis of a red and/or pulsatile retrotympanic mass includes aberrant internal carotid artery, persistent stapedial artery (PSA), glomus tympanicum, and dehiscent jugular bulb. By recognizing the features of aberrant internal carotid artery and PSA on high-resolution computed tomography, these entities can be assessed by the radiologist. PSA is further classified by type because each type demonstrates a unique set of imaging features in addition to features common to all types. Although rarely encountered, it is important to reliably and consistently detect these anomalies because failure to do so can lead to disastrous surgical outcomes...
February 2019: Neuroimaging Clinics of North America
https://read.qxmd.com/read/30466645/third-window-lesions
#4
REVIEW
Mai-Lan Ho
Third window abnormalities are bony defects of the inner ear that enable abnormal communication with the middle ear and/or cranial cavity. Vestibular symptoms include vertigo and nystagmus induced by loud noises or increases in pressure. Auditory symptoms involve "pseudo-conductive" hearing loss with a low-frequency air-bone gap at audiometry, resulting from decreased air and increased bone conduction. High-resolution temporal bone computed tomography is the first-line imaging modality for evaluation of third window pathology and is critical for accurate diagnosis and management...
February 2019: Neuroimaging Clinics of North America
https://read.qxmd.com/read/30466644/imaging-of-tinnitus
#5
REVIEW
Mary Beth Cunnane
Although not all patients with tinnitus require imaging, patients with tinnitus and asymmetric hearing loss, additional neurologic findings, or pulsatile tinnitus should be evaluated with an appropriately tailored imaging study. Choice of imaging study should be guided by type of hearing loss and additional physical examination findings, such as middle ear lesion, presence of carotid bruit, or pulsatile tinnitus extinguished by jugular compression.
February 2019: Neuroimaging Clinics of North America
https://read.qxmd.com/read/30466643/otosclerosis-and-dysplasias-of-the-temporal-bone
#6
REVIEW
Vanesa Carlota Andreu-Arasa, Edward K Sung, Akifumi Fujita, Naoko Saito, Osamu Sakai
Many bone dysplasias, some common and others rare, may involve the temporal bone causing conductive, sensorineural, or mixed hearing loss, vestibular dysfunction, or skull base foraminal narrowing, potentially affecting quality of life. Some conditions may affect only the temporal bone, whereas others may be more generalized, involving different regions of the body. High-resolution computed tomography may detect subtle osseous changes that can help define the type of dysplasia, and MR imaging can help define the degree of activity of lesions and potential associated complications...
February 2019: Neuroimaging Clinics of North America
https://read.qxmd.com/read/30466642/advanced-mr-imaging-of-the-temporal-bone
#7
REVIEW
Sachin Jambawalikar, Michael Z Liu, Gul Moonis
Temporal bone pathologies are challenging to discern because of their small size and subtle contrast. MR imaging is one of the key modalities in evaluating otologic diseases. Current advancement in MR techniques provide multiparametric information for evaluation of these pathologies. The aim of this article is to review state-of-the-art 3-dimensional morphologic and diffusion sequences for otologic MR imaging.
February 2019: Neuroimaging Clinics of North America
https://read.qxmd.com/read/30466641/imaging-of-m%C3%A3-ni%C3%A3-re-disease
#8
REVIEW
Anja Bernaerts, Bert De Foer
Visualization of the morphologic substrate of Ménière disease, the endolymphatic hydrops, can be performed using noncontrast or contrast-enhanced MR imaging techniques. Noncontrast MR imaging uses a heavily T2-weighted sequence; however, its reproducibility remains to be confirmed. Contrast-enhanced MR imaging techniques mainly use a 3-dimensional fluid-attenuated inversion recovery sequence after intratympanic gadolinium administration or after a 4-hour delayed intravenous gadolinium administration. The latter technique is most frequently used and is able to detect and grade Ménière disease...
February 2019: Neuroimaging Clinics of North America
https://read.qxmd.com/read/30466640/common-otologic-surgical-procedures-clinical-decision-making-pearls-and-the-role-of-imaging
#9
REVIEW
Tiffany Peng, Apoorva T Ramaswamy, Ana H Kim
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 the common otologic surgical procedures that stress this important dynamic. The surgical perspective on quick and effective clinical decision-making pearls to keep in mind during a thorough radiographic analysis of the ear and lateral skull base is presented...
February 2019: Neuroimaging Clinics of North America
https://read.qxmd.com/read/30466639/management-of-vestibular-schwannomas-for-the-radiologist
#10
REVIEW
Apoorva T Ramaswamy, Justin S Golub
Vestibular schwannomas are the most common tumor of the cerebellopontine angle. The history of their management has driven advances in imaging, lateral skull base surgery, as well as radiosurgery. With these advances, a shift has occurred from life-saving treatment for late-stage disease to quality of life focused management of smaller tumors. The complicated treatment paradigms involving observation, stereotactic radiosurgery and surgery require close communication between the treatment and neuroradiology teams...
February 2019: Neuroimaging Clinics of North America
https://read.qxmd.com/read/30466638/temporal-bone-tumors-an-imaging-update
#11
REVIEW
Philip Touska, Amy Fan-Yee Juliano
In their variety, temporal bone tumors mirror the complexity of the structure from which they arise. They include more familiar lesions, such as vestibular schwannomas and paragangliomas, and also rarer neoplasms, such as nonvestibular schwannomas, sarcomas, giant cell tumors, Schneiderian papillomas, and endolymphatic sac tumors. Diagnostic imaging is invaluable in evaluating such lesions because they are typically challenging to access surgically and monitor clinically. The ability to differentiate tumors from benign ('don't touch') or indolent lesions can prevent unnecessary morbidity...
February 2019: Neuroimaging Clinics of North America
https://read.qxmd.com/read/30466637/imaging-of-temporal-bone-trauma-a-clinicoradiologic-perspective
#12
REVIEW
Joshua E Lantos, Kristen Leeman, Elizabeth K Weidman, Kathryn E Dean, Tiffany Peng, Aaron N Pearlman
Imaging plays an important role in the evaluation of temporal bone trauma. Certain imaging findings can significantly change patient management or change surgical approach. Precise knowledge of clinical or surgical management can guide the review of imaging to detect these key findings. This article reviews the clinical and imaging findings as well as management of complications from temporal bone trauma, including hearing loss, vertigo, perilymphatic fistula, cerebrospinal fluid leak, facial nerve injury and vascular injury...
February 2019: Neuroimaging Clinics of North America
https://read.qxmd.com/read/30466636/imaging-findings-in-syndromes-with-temporal-bone-abnormalities
#13
REVIEW
Daniel Thomas Ginat
There is a wide variety of congenital syndromes that can involve the temporal bone. Many of these have overlapping features due to common embryologic abnormalities, such as first and second branchial anomalies. Diagnostic imaging is often important in the workup of hearing deficits related to congenital syndromes. This article reviews the imaging features of selected congenital syndromes with temporal bone abnormalities, including Treacher Collins syndrome, oculo-auriculo-vertebral dysplasia spectrum, Klippel-Feil syndrome, branchio-oto-renal syndrome, Pierre Robin sequence, CHARGE syndrome, Pendred syndrome, Down syndrome, Trisomy 18, Turner syndrome, and neurofibromatosis type 2...
February 2019: Neuroimaging Clinics of North America
https://read.qxmd.com/read/30466635/imaging-of-pediatric-hearing-loss
#14
REVIEW
Karuna V Shekdar, Larissa T Bilaniuk
Temporal bone high-resolution computed tomography (HRCT) and magnetic resonance (MR) imaging are valuable tools in the evaluation of pediatric hearing loss. Computed tomography is important in the evaluation of pediatric conductive hearing loss and is the imaging modality of choice for evaluation of osseous abnormalities. MR imaging is the modality of choice for evaluation of sensorineural hearing loss. A broad spectrum of imaging findings can be seen with hearing loss in children. HRCT and MR imaging provide complementary information and are often used in conjunction in the preoperative evaluation of pediatric candidates for cochlear implantation...
February 2019: Neuroimaging Clinics of North America
https://read.qxmd.com/read/30466634/inflammation-of-the-temporal-bone
#15
REVIEW
Ravi Kumar Lingam, Raekha Kumar, Ram Vaidhyanath
Temporal bone and ear structure inflammation is commonly due to infection. It can be associated with a variety of complications and postinflammatory sequelae. Where the ear is easily inspected, clinical evaluation suffices. At the deeper aspect of the temporal bone, clinical evaluation is limited. High-resolution computed tomography scanning is suited for temporal bone imaging and is the modality of choice. MR imaging is useful to characterize disease, define the extent and spread of disease, or as a surveillance tool...
February 2019: Neuroimaging Clinics of North America
https://read.qxmd.com/read/30322605/preface
#16
EDITORIAL
Lotfi Hacein-Bey
No abstract text is available yet for this article.
November 2018: Neuroimaging Clinics of North America
https://read.qxmd.com/read/30322604/ischemic-stroke
#17
EDITORIAL
Suresh K Mukherji
No abstract text is available yet for this article.
November 2018: Neuroimaging Clinics of North America
https://read.qxmd.com/read/30322603/health-care-organization-for-the-management-of-stroke-the-french-perspective
#18
REVIEW
Jean-Pierre Pruvo, Jerome Berge, Gregory Kuchcinski, Martin Bretzner, Xavier Leclerc, Lotfi Hacein-Bey
Stroke, a major burden to society, can now be treated in increasingly larger numbers of patients. Intravenous thrombolysis and mechanical thrombectomy are both now standard of care with class I, level of evidence A. Various local, regional, and national challenges are present, preventing equality in access to care for many patients. France is a developed country with a centralized national health care system accessible for all citizens. This article discusses current challenges in the implementation of the delivery of stroke care and some solutions that are being evaluated by the medical community...
November 2018: Neuroimaging Clinics of North America
https://read.qxmd.com/read/30322602/economic-and-societal-aspects-of-stroke-management
#19
REVIEW
Govind Mukundan, David J Seidenwurm
Stroke is a major health burden worldwide with attendant mortality, morbidity, and cost. In 2010, there were approximately 16.9 million strokes and an estimated 33 million stroke survivors worldwide. Also, in the United States, stroke is the third leading cause of death, with ischemic stroke resulting in 8% 30-day mortality (20% for hemorrhagic stroke). The staggering economic cost of the disease is driven largely by disability and long term care. Efforts in stroke healthcare delivery are focusing on performance, efficiency and value to better serve the consumer...
November 2018: Neuroimaging Clinics of North America
https://read.qxmd.com/read/30322601/reperfusion-changes-after-stroke-and-practical-approaches-for-neuroprotection
#20
REVIEW
Jae H Choi, John Pile-Spellman
Reperfusion is the first line of care in a growing number of eligible acute ischemic stroke patients. Early reperfusion with thrombolytic drugs and endovascular mechanical devices is associated with improved outcome and lower mortality rates compared with natural history. Reperfusion is not without risk, however, and may result in reperfusion injury, which manifests in hemorrhagic transformation, brain edema, infarct progression, and neurologic worsening. In this article, the functional and structural changes and underlying molecular mechanisms of ischemia and reperfusion are reviewed...
November 2018: Neuroimaging Clinics of North America
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