AJNR Blog » Brain

Educational presentation: ALS

MCastillo — Tue, 25 May 2010 16:46:40 +0000

To continue with the education activities in our blog here is another Powerpoint presentation. The author of this one is a fellow here with us in Neuroradiology at UNC. Although short, I hope that all of you find it interesting and useful.

ALS (PPT)

Please help me with this case!

tangent — Wed, 28 Apr 2010 14:01:08 +0000

An 11-year-old boy was involved in a car accident and presented in a semicomatous state.

Clinically he was diagnosed as having sustained a diffuse axonal injury and was treated conservatively.

A brain MRI was performed one month following injury and a repeat one 1 year later.

Susceptibility WI at the one month interval showed multiple microhemorrhages in both frontal lobes.

The one year follow-up MRI showed diffuse, symmetric, confluent hyperintensities in the periventricular WM and these findings were not present on the initial MRI.

The question is whether the WM changes seen at the one-year follow up study are related to the diffuse axonal injury. The microbleeds seen on SWI did not coincide exactly with the WM changes.

AJNR’s New Special Collection and Podcast Survey Brain Tumor Imaging

MCastillo — Wed, 21 Apr 2010 14:54:35 +0000

“Brain Tumor Imaging, Volume 1: Pretherapy” is the latest Special Collection from the American Journal of Neuroradiology. Distilling the best of the many articles related to brain tumor imaging that appear in the pages of AJNR posed a daunting task, but Editor-in-Chief Mauricio Castillo knew that Collection Editor Soonmee Cha of the University of California, San Francisco would be successful. “Dr. Cha is a respected investigator, a contributor of high quality and clinically relevant articles to AJNR and other journals, and a member of our Editorial Board,” he explained. Dr. Cha chose to categorize and present this compilation of research in two volumes. “Brain tumors consist of a heterogeneous group of neoplasms numbering more than 120 different histologic types with a wide range of clinical, biologic, and prognostic behavior. Due to this breadth, I organized the articles by specific imaging modality and selected those that best utilized imaging to address disease-specific questions,” she said. The first volume covers essential anatomic and physiologic clinical imaging methods as well as highly innovative and potentially ground-breaking imaging that promises even greater progress in caring for brain tumor patients in the future. Volume 2 will include articles that focus on imaging of brain tumors aftertherapy. In the accompanying podcast, Dr. Cha and AJNR’s Podcast Editor C. Douglas Phillips discuss the collaborative role of the neuroradiologist in the treatment and prognosis of brain tumors and the benefits of advanced diagnostic imaging techniques. This special podcast, along with Dr. Phillips’ summaries of each issue’s most salient articles including the Editor’s Choices and Fellow’s Journal Club selections, are available to download on the AJNR Website and in the iTunes Store. AJNR Special Collections provide a comprehensive source of imaging-related articles on a single topic and are released biannually on an open-access basis. Previous Collections include “Imaging Acute Stroke and its Consequences,” edited by Pamela W. Schaefer and R. Gilberto GonzÃ¡lez, “Acute Stroke Intervention” edited by Colin P. Derdeyn and Avi Mazumdar, “Percutaneous Vertebroplasty,” edited by Mary E. Jensen and Joshua A. Hirsch, and “Radiation Dose in Neuroradiology CT Protocols,” edited by Max Wintermark and Michael H. Lev. All are available through AJNR’s print-on-demand service (Brightdoc), where readers can order a full-color hard copy for just US $50.00, plus shipping.

Educational presentation: CNS and head and neck teratomas

MCastillo — Mon, 22 Feb 2010 17:12:49 +0000

Teratomas (NXPowerLite)

Here is the next educational presentation. This was also done by some of my previous fellows. The topic is a bit unusual, but I think that the presentation is very good and should help our readers.

Mass in septum pellucidum

Impala — Wed, 17 Jun 2009 17:02:49 +0000

Does anyone know what this mass could be? It was biopsied 2 years ago and pathology reported it as “normal brain tissue”.

As you can see, the lesion is hyperintense on T2, hypointense on T1 and does not enhance. No calcifications are present and no there is no restricted diffusion .

The patient is 25 year old and has loss of short term memory and seizures.

Any input into the nature of the mass is welcome.

Incomplete ring sign?

karthik — Wed, 11 Feb 2009 14:34:13 +0000

How confidently can one diagnose demyelination with the incomplete ring sign? As opposed to infectious/inflammatory lesions?