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Spinal Cord Herniation 10,723 views
This is a case for Prof. Dr. Dillon. It is in press by our neurosurgeons and us, for the use of Duragen. Idiopathic herniation of the thoracic spinal cord: a case report and technique note. U...
Neuro Protocols 8,067 views
Alisa Gean is doing a great job getting a group together to share and collaborate neuro protocols. This would be a great place from members to share protocols, and open a discussion about the best ima...
Possible SIH with Spinal Subdural Hygroma, What Next? 6,657 views
[caption id="attachment_602" align="aligncenter" width="407" caption="Sag T1. Tonsils are not particularly low and no sagging of the base of the brain."][/caption] [caption id="attachment_603" alig...
Brachial Plexus MRI Protocol 5,347 views
BP MRI Protocol Fall is upon us and so is the lecturing season! Like years before, this Fall I will be giving my brachial plexus lecture several times and the most commonly asked question by the au...
Cervical Spine Nomenclature 5,217 views
The ASNR/ASSR nomenclature document was specific for the lumbar spine. I would be interested in your opinion on the correct terminology for cervical spondylosis: what terms and why. Specifically, t...
Intracranial Hypotension: Advice on Best Treatment 5,039 views
Middle age female patient diagnosed with Spontaneous intracranial hypotension. Has multiple (approx 23) perineural cysts. Has undergone several blood patches and artificial CSF infusions without rel...
Embolization of Brain Arteriovenous Malformations for Cure 4,239 views
The editorial comment in the AJNR of Jan 09 by Jayaraman and Cloft is worthy of careful scrutiny, I believe. Although in my personal experience with Onyx and NBCA, final cure rates of brain AVMs from ...
Liver Hemangiomas and Vascular Lesions of the Brain 4,212 views
[gallery] I have a patient with 15 large liver hemangiomas and two partly calcified lesions in brain. Does anyone know of associated liver hemangiomas and vascular lesions in the brain?
Aunt Mickey (They Look the Same until You Undress Them). Internal Capsule Infarct or Something Else? 4,144 views
This 30 year old hypertensive female smoker presented with acute onset of right hemiparesis. Her history also included OCP use and dyslipidemia. MRI demonstrated an acute infarct in the posterior limb...
More on DWI of Head and Neck Lesions 3,979 views
Yesterday I wrote a short comment in the utility of DWI in the evaluation of head and neck lesions. While reading cases in the afternoon I came across a new patient with a retinoblastoma. This pa...
Category Archives: Letters to the Editor
Endovascular Treatment of Ruptured Vertebral Artery Dissecting Aneurysms Involving the Posterior Inferior Cerebellar Artery
Published online before print January 26, 2012, doi: 10.3174/ajnr.A3007
AJNR 2012 33: E38
F. Xua and D. Songa
aDepartment of Neurosurgery
Huashan Hospital
Fudan University
Shanghai, China
We read the article of Kim et al entitled “Stenting from the Vertebral Artery to the Posterior Inferior Cerebellar Artery” with special interest.1 In their series, 2 patients had vertebral artery (VA) dissecting aneurysms involving the posterior inferior cerebellar artery (PICA) origin. The authors used VA-to-PICA stent placement with occlusion of the VA by coil embolization. They provided a new treatment option for VA dissecting aneurysms involving the origin of PICA. In this … Continue reading >>
Unclear Value of Positional MR Angiography in Evaluating Cerebral Venous Outflow Hemodynamics
Published online before print January 26, 2012, doi: 10.3174/ajnr.A2991
AJNR 2012 33: E30
K. Dolica and K. Marra
aBuffalo Neuroimaging Analysis Center
State University of New York
R. Zivadinovb,c
bBuffalo Neuroimaging Analysis Center
State University of New York
cThe Jacobs Neurological Institute, Department of Neurology
University at Buffalo, State University of New York
Buffalo, New York
We read with interest the article entitled “Positional Venous MR Angiography: An Operator-Independent Tool to Evaluate Cerebral Venous Outflow Hemodynamics,” originally published in the American Journal of Neuroradiology on-line on November 3, 2011.1
We believe that the … Continue reading >>
Stent-Assisted Coiling in Acutely Ruptured Intracranial Aneurysms
Published online before print January 26, 2012, doi: 10.3174/ajnr.A2989
AJNR 2012 33: E28
F. Xua and D. Songa
aDepartment of Neurosurgery
Huashan Hospital
Fudan University
Shanghai, China
We read with interest the recent article entitled “Stent-Assisted Coiling in Acutely Ruptured Intracranial Aneurysms: A Qualitative, Systematic Review of the Literature” by Bodily et al.1 The authors reviewed the literature to evaluate the safety and efficacy of stent-assisted coil embolization of acutely ruptured intracranial aneurysms. They collected 17 articles that included at least 5 patients each with ruptured aneurysms who were treated acutely with stents or stent-assisted coiling. … Continue reading >>
Uncommon Presentation of Intracranial Cryptococcoma in an Immunocompetent Patient
Published online before print January 26, 2012, doi: 10.3174/ajnr.A2988
AJNR 2012 33: E26
R.R. Batistaa
aCDPI and Multi-Imagem Clinics
Santa Casa da Misericóirdia do Rio de Janeiro and
University Federal of Rio de Janeiro
E.L. Gasparettob
bCDPI and Multi-Imagem Clinics and
University of Rio de Janeiro
Brazil
We read with special interest the article by Saigal et al,1 who described unusual brain MR imaging findings in an immunocompetent patient with cryptococcosis. The authors emphasized that the imaging findings of cryptococcosis affecting the brain in immunocompetent patients can be different from the more commonly described findings in immunocompromised patients.
We present … Continue reading >>
Spectrum Bias: Patient Selection May Affect Performance of Calcium Volume in Detecting Carotid Stenosis
Published online before print December 8, 2011, doi: 10.3174/ajnr.A2937
AJNR 2012 33: E13-E14
Basar Sarikayaa and Alexander M. McKinneya
aDepartment of Radiology/Neuroradiology
University of Minnesota and Hennepin County Medical Centers
Minneapolis, Minnesota
We read the article recently published on-line in the American Journal of Neuroradiology by Marquering et al1 with great interest, and we appreciate the authors’ efforts to test the hypothesis suggested in one of the articles published by our group in 2005,2 by reproducing the same methods, albeit on a different subject population. In that particular regard, we would like to note several … Continue reading >>
Forniceal Involvement in Wernicke Encephalopathy
Published online before print November 17, 2011, doi: 10.3174/ajnr.A2888
AJNR 2011 32: E209
R.S. Borgesa, N. Venturaa, E.L. Gasparettoa and M.V.R. Pintob
aDepartment of Radiology
bDepartment of Neurology
University Federal of Rio de Janeiro
Rio de Janeiro, Brazil
We read with special interest the article of Zuccoli et al1 entitled “MR Imaging Findings in 56 Patients with Wernicke Encephalopathy: Nonalcoholics May Differ from Alcoholics.” The authors reported the imaging features of Wernicke encephalopathy (WE), which include symmetric alterations in the thalami, mammillary bodies, tectal plate, and periaqueductal area, and other less … Continue reading >>
The New Standard for Performance of Intracranial Angioplasty and Stent Placement after Stenting versus Aggressive Medical Therapy for Intracranial Arterial Stenosis (SAMMPRIS) Trial
Published online before print November 17, 2011, doi: 10.3174/ajnr.A2919
AJNR 2011 32: E214
S.A. Chaudhrya, M. Watanabea and A.I. Qureshia
aZeenat Qureshi Stroke Research Center
University of Minnesota
Minneapolis, Minnesota
Percutaneous transluminal angioplasty and stent placement (PTAS) has become a treatment option for selected patients with symptomatic intracranial arterial stenosis.1The Stent Placement versus Aggressive Medical Management for Preventing Recurrent Stroke in Intracranial Stenosis (SAMMPRIS) trial was initiated in October of 20082 to compare PTAS with aggressive medical managements. The intent of the PTAS treatment was to prevent the primary end point (any … Continue reading >>
The Lumbar Multifidus Muscles are Affected by Medial Branch Interventions for Facet Joint Syndrome: Potential Problems and Proposal of a Pericapsular Infiltration Technique
Published online before print November 3, 2011, doi: 10.3174/ajnr.A2901
AJNR 2011 32: E213
J. Gossnera
aDepartment of Clinical Radiology
Weende Hospital
Göttingen, Germany
Low back pain is a major health problem. Like any structure of the spine and its adjacent musculature, the facet joints can be a source of pain. It has been proposed that in 15%–52% of patients with chronic low back pain, the facet joints are involved, but isolated facet joint pain is exceedingly rare.1 This is in accordance with the proposed biomechanical pathophysiology of facet joint syndrome. In the course of degenerative disk disease, … Continue reading >>
Is the Wingspan Stent More Dangerous Than Natural History in Intracranial Stenosis?
Published online before print November 17, 2011, doi: 10.3174/ajnr.A2900
AJNR 2011 32: E211
M. Berguia
aNeuroradiology
University of Turin
Turin, Italy
In the August issue of the American Journal of Neuroradiology, Al-Ali et al1 compared the results of percutaneous angioplasty (PTA), balloon-mounted stent (BMS), and the Wingspan system (Boston Scientific, Natick, Massachusetts) in the treatment of intracranial stenoses.1 Both short- and long-term results strongly favored PTA over BMS and Wingspan. The latter, in particular, compared unfavorably with the natural history of the disease in the first year after intervention. The choice of the intervention was … Continue reading >>
MR Imaging Findings in Intracranial Dural Arteriovenous Fistula Shunt with Retrograde Cortical Venous Drainage Using Susceptibility-Weighted Angiography
Published online before print October 13, 2011, doi: 10.3174/ajnr.A2875
AJNR 2011 32: E196-E197
J. Hodela, S. Gerbera and M. Zinsa
aDepartment of Radiology
Fondation Hôpital Saint Joseph
Paris, France
M. Rodallecb
bDepartment of Radiology
Centre Cardiologique du Nord
Saint Denis, France
X. Leclercc
cDepartment of Neuroradiology
Hôpital Roger Salengro
Lille, France
R. Blancd
dFondation Ophtalmologique Adolphe de Rothschild
Paris, France
A. Rahmounie
eDepartment of Radiology
Hôpital Henri Mondor
Créteil, France
We read with special interest the article of Noguchi et al entitled “Intracranial Dural Arteriovenous Fistula with … Continue reading >>