Author: jrgantenberg

Editorial Office • American Journal of Neuroradiology @TheAJNR

The American Journal of Neuroradiology (AJNR) publishes original articles pertaining to the clinical imaging, therapy, and basic science of the central and peripheral nervous system, including but not limited to the brain, spine, head and neck, interventional procedures, techniques in imaging and intervention, and related educational, socioeconomic, and medicolegal issues.

ASSR 2016 Gold Medal: Wade H. M. Wong


The American Society of Spine Radiology Presents 2016 Gold Medal to Wade H. M. Wong, D.O., FACR, FAOCR During 2016 Annual Symposium

Wade H. M. Wong, DO, FACR, FAOCR

The American Society of Spine Radiology (ASSR) presented the Society’s 2016 Gold Medal to Wade H. M. Wong, D.O., FACR, FAOCR on February 20 during the ASSR 2016 Annual Symposium, February 18-21 at the Hyatt Regency Coconut Point Resort & Spa in Bonita Springs, Florida. Dr. Wong is the fourth recipient of the ASSR Gold Medal, which was established in 2013.  The ASSR Gold Medal is awarded annually in recognition of outstanding contributions to the Society and to spine radiology.

Dr. Wong is a Past President of the American Society of Spine Radiology. He is also a Past President of the Western Neuroradiological Society (WNRS) and of the American Osteopathic College of Radiology (AOCR.)  Dr. Wong is a Fellow of the American College of Radiology (ACR) and a Fellow of the AOCR.  He is a Senior Member of the American Society of Neuroradiology (ASNR), WNRS, and the Society for Interventional Surgery (SNIS.)

Early in his involvement the ASSR, Dr. Wong initiated the hands-on training courses for the ASSR starting in 1999 at the Annual Symposium.  About the same time he also introduced similar hands-on spine interventional courses for the RSNA, which led to his becoming the Chairman of the How-to and Hands-On Refresher Courses.

Dr. Wong is Professor Emeritus of Radiology at the University of California, San Diego. His involvement in teaching has been his hallmark. He is a three-time recipient of the Silver Spoon and two-time recipient of the Teacher of the Year Award for Neurosciences at UCSD.  He is the recipient of the Trenery Medal for outstanding Lecturing. For 2015, Dr. Wong was selected to be the …

Register Now for ASNR’s 54th Annual Meeting

ASNR 54th Annual Meeting and The Foundation of the ASNR Symposium 2016…join us and be a part of the best ASNR Annual Meeting and Symposium.

There are lots of new and exciting things happening at the meeting in 2016!

The ASNR Advanced Registration and Housing deadline is Friday, April 8, 2016. Register today and book your housing!

Highlights of the Foundation of the ASNR and the ASNR 54th Annual Meeting:

The Foundation of the ASNR Symposium beginning at 10:30 AM Saturday and 8:00 AM Sunday morning.  The symposium will be on Emergency NeuroradiologyImmediately following these symposia join us for the Closing Reception of the Foundation of the ASNR Symposium (included in your registration fee), followed by a fun performance by the Capitol StepsA Washington D.C. – based comedy troupe guaranteed to leave you laughing!

The Annual Meeting will provide informative updates on general Neuroradiology and showcase specialty healthcare programming, Young Professional programming, parallel paper sessions, and evidence based medicine programming.  The heart of the meeting will be invited lectures, original presentations, scientific posters, and educational exhibits. New this year: Turbo Talks! Brief, oral presentations followed by an in-depth electronic poster tour by the authors.

  • Fourteen (14) Self-Assessment Module (SAM) Sessions Programming throughout the week.
  • Earn up to 46 AMA PRA Category 1 Credits™.
  • Make sure you plan to attend the Annual Meeting Welcome Reception with our technical exhibitors and enjoy a performance by ASNR physician members’ jazz quartet led by Drs. Bruce Wasserman and Jonathan Lewin on Monday, May 23 from 6:15 – 7:45pm followed by a Jam Session until 10:00pm.
  • Need to evaluate to receive your CME credits but no time to stop by the CME Pavilion? You can access the link remotely 24/7 at the center and at your hotel. 

24th Zurich Course on Diagnostic and Interventional Neuroradiology

The Department of Neuroradiology of the University Hospital of Zurich is sponsoring its 24th Zurich Course on Diagnostic and Interventional Neuroradiology on August 22 – 27, 2016.

The diagnostic part of the course will cover selected topics on fundamental and advanced clinical neuroimaging of the brain, including neuroanatomy, neurooncology, neuroimmunology and neurovascular disease with emphasis on hemorrhagic and ischemic stroke and neuroradiology of the skull base.

The interventional part of the course will cover almost the entire spectrum of endovascular interventional neuroradiology including acute ischemic stroke, intra- and extracranial atherosclerotic disease, vascular lesions of the head and neck, hypervascular skull base and intracranial tumors, dural arteriovenous fistulae, brain AVMs, spinal cord AVMs, and intracranial aneurysms.

Course Directors: Professor Anton Valavanis, Zurich & Professor Scott W. Atlas, Stanford. For further information, contact Prof. A. Valavanis, Department of Neuroradiology, University Hospital of Zurich, 8091 Zurich, Switzerland; Website: Phone +41-44-255 56 00, Fax +41-44-255 45 04, email:


Atlas of Neurosurgical Techniques (2-Volume Set)

Sekhar LN, Fessler RG, eds. Atlas of Neurosurgical Techniques. Vols 1 and 2. 2nd ed. Thieme; 2015; 1566 pp; 2775 ill; $449.99

sekhar-fessler_atlas-neurosurg-techniques_coverWhile a majority of neuroradiologists, except those in interventional neuroradiology, may not be enticed to purchase their own personal copy of the 2-volume set Atlas of Neurosurgical Techniques: Brain, it should be recognized by all those in the clinical neurosciences that this deals with for more than “techniques”. Edited by Drs. Sekhar (University of Washington) and Fessler (Rush University Medical Center), this 1566-page book set is the second edit (prior publication 2006) of this authoritative text, and it fulfills all expectations.

Volume 1 covers in great detail General Principles and Basic Techniques (8 chapters), Aneurysms (19 chapters), AVMs (13 chapters), Occlusive and Hemorrhagic Vascular Disease (6 chapters), Intraventricular Tumors (2 chapters), Pineal Region Lesions (4 chapters), Cranial Base Lesions (27 chapters), Epilepsy and Functional Pain Disorders (3 chapters), Cranial Nerve Compression Syndromes (8 chapters), Cranio-Cerebral Trauma (2 chapters), Hydrocephalus (2 chapters), CNS Infections (1 chapter), Stereotatic Radiosurgery (5 chapters). A multitude of video clips (over 150) accompany the 2 volumes. One accesses those videos via codes given with the book (separate code for each volume). As one reads material in each section, they are referred back to an appropriate video.

Considerable space (310 page) is devoted to aneurysms and their treatment, and with the drawings, the associated angiograms, and the pre/postoperative imaging, one develops an understanding of the techniques (open and endovascular) used in both common and complex aneurysms. Each chapter in this section (and, in fact, throughout the entire set of books) follows about the same—but not identical—outline, with items of interest to radiologists, such as case material (history, imaging, procedure), patient selection, choices for approach, vivid intraoperative photographs (where applicable), operative approaches, drawings as …

ASNR Seeks Editors to Bolster Content on New Website

Originally posted February 14, 2016 at

The ASNR is revamping its website and is looking for 11 website editors to help with creating content and working with ASNR members to create content. The website editors will each be in charge of different sections of the website (MOC portal, fellowship portal, neurocurriculum live, patient portal, PQIs, advocacy/health policy, research, study groups and 3 editors for social media). The website editors will work closely with the members of the ASNR Executive Committee responsible for these respective areas. Editors are expected to ensure that their website sections are up-to-date and that new content is continuously being created. New content should be added typically on at least a monthly frequency to keep ASNR members engaged. Web content will also populate ASNR social media, including Facebook and Twitter sites.

The website editors will be official members of the ASNR website content task force and can list the title of ASNR website editor on their CV. They will receive nominal financial compensation. Initial appointment will be for one year, and appointment can be renewed based on productivity as assessed by the ASNR Website and Social Media Committee. Interested candidates should email their CV along with a statement explaining their qualifications and interest in this role to Max Wintermark at Junior ASNR members are strongly encouraged to apply.…

We Are Retiring the Clinical Correlation

12-dec-aThe Clinical Correlation, one of several features within the AJNR‘s Case Collections section, is being retired.

Originally envisioned by Section Editor Dr. Christine Glastonbury (from the University of California, San Francisco) as a way to stoke collaboration between neuroradiologists, pathologists, and clinicians, the Clinical Correlation ran from October 2013 through December 2015. In that time, Dr. Glastonbury — with the help of Associate Editors Drs. Matthew S. Russell, Tarik Tihan, S. Andrew Josephson, and Phiroz Tarapore, all of whom also hail from UCSF — amassed a collection of cases matching imaging with pathology, often featuring video and audio components to help demonstrate these correlations. We hope our readers have found the Clinical Correlation to be a useful series of cases for learning how neuroradiologic information contributes to and corresponds with important clinicopathologic findings in a number of disease entities.

The AJNR would like to thank Dr. Glastonbury and her Associate Editors for the time and effort they devoted to producing this feature. The case archive will be accessible from the About page at, where site visitors will be able to browse installments either by date or by diagnosis.…

Event: Fetal Brain Conference, Children’s National Health System

Featuring a 360-degree review of advances in understanding of the fetal brain – the road to here and now, and the road going forward – presented by a multidisciplinary panel of world-renowned experts in the fields of maternal-fetal medicine, developmental neuroscience, neurogenetics, fetal and neonatal neurology, and imaging, the International Symposium on the Fetal Brain is a two-day, CME-accredited event that will provide a comprehensive, holistic review of both genetic and environmental aspects of normal and abnormal brain development on the fetus as well as a framework for understanding the effects of a failing or hostile intrauterine environment, or premature loss of intrauterine support, on brain development.



For more information or to register, please visit

AJNR Welcomes New Statistical Senior Editor

Bryan Comstock, MS
Bryan Comstock, MS

The AJNR would like to welcome Bryan Comstock, MS, who joined us as our first Statistical Senior Editor on October 1. Manuscripts submitted to AJNR now undergo separate statistical review, during which they are assessed for the statistical validity of their findings and for study design. We hope this added level of scrutiny will further improve the quality of papers we publish and also help authors to revise and refine their work during review.

Bryan is Senior Biostatistician at the Center for Biomedical Statistics at the University of Washington in Seattle, where he develops and supports grant applications for extramural funding in the areas of health services research, radiology, neonatology, nephrology, and surgery. He has served as the primary biostatistician for numerous randomized clinical trials and observational cohort studies and has developed electronic data capture systems for multisite randomized studies. He is a member of the Society of Clinical Trials and the co-author of more than 50 peer-reviewed articles indexed on MEDLINE.…

In Memoriam – Georges Salamon

salamon_obitGeorges Salamon, one of neuroradiology’s pioneers, early thought leaders, and international spokesmen died on October 10, 2015, at age 84. Born in Montpellier, France to a Russian father and a Polish mother of Jewish descent, he acutely experienced the traumas of World War II, but kept throughout his life a unique, optimistic spirit of adventure. Knowing the costs and benefits of the vicissitudes of life, Georges maintained an exceptional open-mindedness and a zest for change and new opportunities.

Receiving his Doctor of Medicine from the Faculty of Aix-Marseille in 1958, he was spurred into specialty training by his teachers, Herman Fischgold, Henri Gastaut, and Robert Naquet, graduating in radiology in 1962 and neurology in 1965. This dual experience in imaging and neuroscience provided the stimulus for Georges to enter the nascent field of Neuroradiology and the basis of a prestigious career bridging these disciplines. Post training, Georges quickly joined the Hôpital de la Timone in that “considerable town,” Marseille, first as assistant professor in 1964, and then as head of the Department of Neuroradiology from 1972 to 1996.

Though broadly curious and an eclectic thinker, Georges’ first scientific love was neuroanatomy. Between 1965 and 1970 his students’ numerous theses on cerebral vasculature formed the basis of and culminated in the publication of the Atlas of Arteries of the Human Brain in 1974, of Radiologic Anatomy of the Brain in collaboration with Y.P. Huang in 1978, and Vascularization and Cerebral Circulation with G. Lazorthes and A. Gill that same year. This work became the anatomic bible for a whole generation of neuroradiologists and neurosurgeons. It also served as a basis for the subsequent development of therapeutic angiography and the emergence in France of a new generation of vascular neuroradiologists under the joint stimulus of Georges Salamon and René Djindjian.

The cross-sectional …

Differentiation between Cystic Pituitary Adenomas and Rathke Cleft Cysts: A Diagnostic Model Using MRI

Fellows’ Journal Club

Editor’s Comments

This is a retrospective study that included 54 patients with a cystic pituitary adenoma and 28 patients with a Rathke cleft cyst who underwent MR imaging followed by surgery. Regression analysis showed that cystic pituitary adenomas and Rathke cleft cysts could be distinguished on the basis of the presence of a fluid-fluid level, septation, an off-midline location, and the presence of an intracystic nodule.


Diagnostic decision tree for the differentiation of cystic pituitary adenomas and RCCs using MR imaging.
Diagnostic decision tree for the differentiation of cystic pituitary adenomas and RCCs using MR imaging.


Cystic pituitary adenomas may mimic Rathke cleft cysts when there is no solid enhancing component found on MR imaging, and preoperative differentiation may enable a more appropriate selection of treatment strategies. We investigated the diagnostic potential of MR imaging features to differentiate cystic pituitary adenomas from Rathke cleft cysts and to develop a diagnostic model.


This retrospective study included 54 patients with a cystic pituitary adenoma (40 women; mean age, 37.7 years) and 28 with a Rathke cleft cyst (18 women; mean age, 31.5 years) who underwent MR imaging followed by surgery. The following imaging features were assessed: the presence or absence of a fluid-fluid level, a hypointense rim on T2-weighted images, septation, an off-midline location, the presence or absence of an intracystic nodule, size change, and signal change. On the basis of the results of logistic regression analysis, a diagnostic tree model was developed to differentiate between cystic pituitary adenomas and Rathke cleft cysts. External validation was performed for an additional 16 patients with a cystic pituitary adenoma and 8 patients with a Rathke cleft cyst.


The presence of a fluid-fluid level, a hypointense rim on T2-weighted images, septation, and an off-midline location were more common with pituitary adenomas, whereas the presence of an intracystic nodule was