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Interventional neuroradiologist

Yin Ting Cheung, Noah D Sabin, Wilburn E Reddick, Deepa Bhojwani, Wei Liu, Tara M Brinkman, John O Glass, Scott N Hwang, Deokumar Srivastava, Ching-Hon Pui, Leslie L Robison, Melissa M Hudson, Kevin R Krull
BACKGROUND: Leukoencephalopathy is observed in some children undergoing chemotherapy for acute lymphoblastic leukaemia, although its effects on long-term outcomes is unknown. This study examines the associations between acute leukoencephalopathy and neurobehavioural, neurocognitive, and brain white matter imaging outcomes in long-term survivors of childhood acute lymphoblastic leukaemia treated with chemotherapy without cranial radiation. METHODS: In this longitudinal analysis, we used data of children with acute lymphoblastic leukaemia at St Jude Children's Research Hospital (Memphis, TN, USA) who had been treated between June 1, 2000, and Oct 31, 2010...
October 2016: Lancet Haematology
Maria Braileanu, Wuyang Yang, Justin M Caplan, Li-Mei Lin, Martin G Radvany, Rafael J Tamargo, Judy Huang
BACKGROUND: Arteriovenous malformation (AVM) diffuseness has been shown to be prognostic of treatment outcomes. We assessed inter-observer agreement of AVM diffuseness among physicians of different specialty and training backgrounds using digital subtraction angiography (DSA). METHODS: All research protocols were approved by the Institutional Review Board for this retrospective chart review. Two attending neurosurgeons, one attending interventional neuroradiologist, and one senior neurosurgical resident rated 80 DSA views of 36 AVMs as either compact or diffuse in a single-blinded setting...
August 23, 2016: World Neurosurgery
Mohamed Zidan, Matthias Gawlitza, Georgios Metaxas, Cédric Foussier, Sébastien Soize, Laurent Pierot
BACKGROUND AND PURPOSE: The safety of bare platinum coils has been widely described in the literature. This study aimed to report the first series of intracranial aneurysms treated with Barricade bare platinum coils with a comprehensive evaluation of their procedural safety and postprocedural anatomical results. METHODS: Patients with intracranial aneurysms treated between October 2013 and December 2015 by simple coiling or balloon-assisted coiling with Barricade coils (Blockade Medical, Irvine, California, USA) were prospectively included in a database and retrospectively studied...
October 2016: Journal of Neuroradiology. Journal de Neuroradiologie
Stephanie A Kenny, Nevin Majeed, Naista Zhand, Rafael Glikstein, Ronit Agid, Marlise P Dos Santos
PURPOSE: The aim of this study was to assess qualitatively the psychological stressors affecting patients with cutaneous vascular malformations and hemangiomas (CVM-H) and their impact on compliance to interventional treatment. METHODS: A retrospective chart review was conducted of all patients with CVM-H treated by interventional neuroradiology at a single academic institution during a five-year period (2009-2014). Psychological complaints were documented during each clinic visit by a neuroradiologist...
August 2016: Interventional Neuroradiology
Bharathi D Jagadeesan, Haralabos Zacharatos, David R Nascene, Andrew W Grande, Daniel J Guillaume, Ramachandra P Tummala
A 5-month-old infant was to be treated with elective transarterial embolization for a vein of Galen aneurysmal malformation (VGAM). A team of endovascular surgical neuroradiologists, pediatric interventional radiologists, and pediatric cardiologists attempted conventional femoral arterial access, which was unsuccessful given the small caliber of the femoral arteries and superimposed severe vasospasm. Thereafter, eventual arterial access was achieved by navigating from the venous to the arterial system across the patent foramen ovale following a right femoral venous access...
August 2016: Journal of Neurosurgery. Pediatrics
Marielle Ernst, Levente Kriston, Javier M Romero, Andreas M Frölich, Olav Jansen, Jens Fiehler, Jan-Hendrik Buhk
PURPOSE: We sought to develop a standardized curriculum capable of assessing key competencies in Interventional Neuroradiology by the use of models and simulators in an objective, quantitative, and efficient way. In this evaluation we analyzed the associations between the practical experience, theoretical knowledge, and the skills lab performance of interventionalists. MATERIALS AND METHODS: We evaluated the endovascular skills of 26 participants of the Advanced Course in Endovascular Interventional Neuroradiology of the European Society of Neuroradiology with a set of three tasks (aneurysm coiling and thrombectomy in a virtual simulator and placement of an intra-aneurysmal flow disruptor in a flow model)...
2016: PloS One
J B Tavares, E Sacadura-Leite, T Matoso, L L Neto, L Biscoito, J Campos, A Sousa-Uva
BACKGROUND: In interventional neuroradiology, few operators routinely use radiation protection glasses. Moreover, in most centers, radiation dose data only accounts for whole body dose without specific information on lens dose. In 2012, the International Commission on Radiological Protection advised that the threshold limit value for the lens should be 20 mSv/year instead of the previous 150 mSv/year limit. The purpose of this study was to compare the radiation dose in the operator's lens during real diagnostic and interventional neuroangiographies, either using or without lead protection glasses...
June 2016: Interventional Neuroradiology
Fan Li, Olena Tankyevych, Yasmina Chenoune, Raphael Blanc, Eric Petit
Vascular imaging is crucial in the treatment of many diseases. In the case of cerebral ArterioVenous Malformation (AVM), where the vascular network can be deeply altered, an accurate knowledge of its topology is required. For this purpose, after a vessels segmentation and skeletization applied on 3D rotational angiographic images (3DRA), we build a symbolic tree representation of the vascular network thanks to topological descriptors, such as end points, junctions and branches. This leads to an efficient tool to assist the neuroradiologist to understand the feeding and the draining of the AVM and to apprehend its complex architecture in order to determine the best therapeutic strategy before and during embolization interventions...
August 2015: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Anna Steklacova, Ondrej Bradac, Frantisek Charvat, Patricia De Lacy, Vladimir Benes
BACKGROUND: The results of microsurgical treatment for middle cerebral artery (MCA) aneurysms (ANs) have been highly satisfying for decades, notoriously posing a challenge for interventional neuroradiologists. Following the International Subarachnoid Aneurysm Trial (ISAT) study results, most centres across Europe and the USA switched to a "coil first" policy. The purpose of this study is to evaluate and critically review the substantiation of this change. METHODS: The authors conducted a single-institution retrospective study of MCA AN treatment between January 2000 and December 2013 maintaining a "clip first" policy...
March 2016: Acta Neurochirurgica
Elizabeth M Sweeney, Russell T Shinohara, Blake E Dewey, Matthew K Schindler, John Muschelli, Daniel S Reich, Ciprian M Crainiceanu, Ani Eloyan
The formation of multiple sclerosis (MS) lesions is a complex process involving inflammation, tissue damage, and tissue repair - all of which are visible on structural magnetic resonance imaging (MRI) and potentially modifiable by pharmacological therapy. In this paper, we introduce two statistical models for relating voxel-level, longitudinal, multi-sequence structural MRI intensities within MS lesions to clinical information and therapeutic interventions: (1) a principal component analysis (PCA) and regression model and (2) function-on-scalar regression models...
2016: NeuroImage: Clinical
Carl M Truesdale, Ryan B Peterson, Patricia A Hudgins, Esther X Vivas
The case of a 17-year-old patient with progressive unilateral sensorineural hearing loss and temporal bone malformations concerning for internal auditory canal meningocele with translabyrinthine/perilabyrinthine cerebrospinal fluid fistula is presented with associated computed tomography and magnetic resonance imaging. As the second reported case of an unruptured internal auditory canal meningocele with translabyrinthine/perilabyrinthine fistula, the case presents several clinically relevant points for otologists, neurotologists, and neuroradiologists...
August 2016: Laryngoscope
Brendan W Davis, Michael J Stuart, Pravitha Jayapratap, Bruce I Hall
BACKGROUND: Structured multidisciplinary care is an increasingly popular tool in the management of many complex disease processes; however, there is little published data regarding the effects of such a process on management of intracranial aneurysms and neurosurgical case loads. There is some resistance in the neurosurgical community to routine involvement of interventional neuroradiologists in the care of patients with intracranial aneurysms due to concerns regarding maintenance of neurosurgical case loads and training capabilities...
July 2016: ANZ Journal of Surgery
Michael Crimmins, Y Pierre Gobin, Athos Patsalides, Jared Knopman
The therapeutic management of cerebral arteriovenous malformations has undergone significant change over the past 40 years. Embolization, radiosurgery, advanced imaging modalities, neuropsychological testing and advances in surgical technique has both significantly improved our ability to treat patients, as well as confounding the landscape as to what constitutes best medical practice. Variability in natural history provides additional challenges in that it is challenging to determine an accurate estimate of the risk of hemorrhage, morbidity and mortality...
2015: Expert Review of Neurotherapeutics
Marcelo Magaldi Ribeiro de Oliveira, Arthur Nicolato, Marcilea Santos, Joao Victor Godinho, Rafael Brito, Alexandre Alvarenga, Ana Luiza Valle Martins, André Prosdocimi, Felipe Padovani Trivelato, Abdulrahman J Sabbagh, Augusto Barbosa Reis, Rolando Del Maestro
OBJECT The development of neurointerventional treatments of central nervous system disorders has resulted in the need for adequate training environments for novice interventionalists. Virtual simulators offer anatomical definition but lack adequate tactile feedback. Animal models, which provide more lifelike training, require an appropriate infrastructure base. The authors describe a training model for neurointerventional procedures using the human placenta (HP), which affords haptic training with significantly fewer resource requirements, and discuss its validation...
May 2016: Journal of Neurosurgery
P Aulbach, D Mucha, K Engellandt, K Hädrich, M Kuhn, R von Kummer
BACKGROUND AND PURPOSE: Detection and evaluation of ruptured aneurysms is critical for choosing an appropriate endovascular or neurosurgical intervention. Our aim was to assess whether bone-subtraction CTA is capable of guiding treatment for cerebral aneurysms in patients with acute SAH and could replace DSA. MATERIALS AND METHODS: We prospectively studied 116 consecutive patients with SAH with 16-detector row bone-subtraction CTA and DSA before intracranial aneurysm treatment...
February 2016: AJNR. American Journal of Neuroradiology
M Grade, J A Hernandez Tamames, F B Pizzini, E Achten, X Golay, M Smits
Arterial spin labeling (ASL) is a non-invasive MRI technique to measure cerebral blood flow (CBF). This review provides a practical guide and overview of the clinical applications of ASL of the brain, as well its potential pitfalls. The technical and physiological background is also addressed. At present, main areas of interest are cerebrovascular disease, dementia and neuro-oncology. In cerebrovascular disease, ASL is of particular interest owing to its quantitative nature and its capability to determine cerebral arterial territories...
December 2015: Neuroradiology
Jillian R Gunther, Mariko Sato, Murali Chintagumpala, Leena Ketonen, Jeremy Y Jones, Pamela K Allen, Arnold C Paulino, M Fatih Okcu, Jack M Su, Jeffrey Weinberg, Nicholas S Boehling, Soumen Khatua, Adekunle Adesina, Robert Dauser, William E Whitehead, Anita Mahajan
PURPOSE: The clinical significance of magnetic resonance imaging (MRI) changes after radiation therapy (RT) in children with ependymoma is not well defined. We compared imaging changes following proton beam radiation therapy (PBRT) to those after photon-based intensity modulated RT (IMRT). METHODS AND MATERIALS: Seventy-two patients with nonmetastatic intracranial ependymoma who received postoperative RT (37 PBRT, 35 IMRT) were analyzed retrospectively. MRI images were reviewed by 2 neuroradiologists...
September 1, 2015: International Journal of Radiation Oncology, Biology, Physics
Lucia Patriarca, Mayla Letteriello, Ernesto Di Cesare, Antonio Barile, Massimo Gallucci, Alessandra Splendiani
OBJECTIVES: We aimed to evaluate interobserver agreement in the definition of spine instability among spine neuroradiologists with or without experience in dynamic magnetic resonance imaging (MRI). MATERIAL AND METHODS: Two expert neuroradiologists and two residents retrospectively evaluated the pre-operative dynamic MRI examinations of patients with vertebral instability. Segmental motion, defined as excessive (more than 3 mm) translational motion from supine to upright, was investigated in 103 subjects (309 segments) using kinetic MRI...
June 2015: Neuroradiology Journal
L Pierot, J Klisch, T Liebig, J-Y Gauvrit, M Leonardi, N P Nuzzi, F Di Paola, V Sychra, B Mine, B Lubicz
BACKGROUND AND PURPOSE: Flow disruption with the WEB-DL device has been used safely for the treatment of wide-neck bifurcation aneurysms. The stability of aneurysm occlusion after this treatment was evaluated in the short and midterm, but not in the long term. This retrospective multicenter European study is the continuation of an already published series dealing with short- and midterm anatomic results and analyzes long-term data in patients treated with the WEB-DL. MATERIALS AND METHODS: Twelve European neurointerventional centers initially participated in the study...
December 2015: AJNR. American Journal of Neuroradiology
Amir Abdolahi, Geoffrey C Williams, Curtis G Benesch, Henry Z Wang, Eric M Spitzer, Bryan E Scott, Robert C Block, Edwin van Wijngaarden
BACKGROUND: Recent evidence suggests that the insular cortex may play an important role in cognitive and emotional processes that facilitate drug use but it is unclear whether changes to the insula would result in sustained abstinence. To better understand the role of the insula in maintaining abstinence, we examined quitting patterns in smokers with acute damage to their insula relative to other regions. DESIGN: Prospective cohort study with 3month follow-up, beginning June 2013 and ending May 2014...
December 2015: Addictive Behaviors
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