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David M Yousem
It is difficult to justify maintaining a clinical functional magnetic resonance imaging (fMRI) program based solely on revenue generation. The use of fMRI is, therefore, based mostly in patient care considerations, leading to better outcomes. The high costs of the top-of-the-line equipment, hardware, and software needed for state-of-the-art fMRI and the time commitment by multiple professionals are not adequately reimbursed at a representative rate by current payor schemes for the Current Procedure Terminology codes assigned...
November 2014: Neuroimaging Clinics of North America
Carolyn Prince, Maya E Bruhns
Awareness of mild traumatic brain injury (mTBI) and persisting post-concussive syndrome (PCS) has increased substantially in the past few decades, with a corresponding increase in research on diagnosis, management, and treatment of patients with mTBI. The purpose of this article is to provide a narrative review of the current literature on behavioral assessment and management of patients presenting with mTBI/PCS, and to detail the potential role of neuropsychologists and rehabilitation psychologists in interdisciplinary care for this population during the acute, subacute, and chronic phases of recovery...
August 17, 2017: Brain Sciences
Catherine V M Steinbusch, Caroline M van Heugten, Sascha M C Rasquin, Jeanine A Verbunt, Véronique R M Moulaert
BACKGROUND: Cardiac arrest can lead to hypoxic brain injury, which can affect cognitive functioning. OBJECTIVE: To investigate the course of objective and subjective cognitive functioning and their association during the first year after cardiac arrest. METHODS: A multi-centre prospective longitudinal cohort study with one year follow-up (measurements at two weeks, three months and one year). Cognitive functioning was measured with a neuropsychological test battery and subjective cognitive functioning with the Cognitive Failures Questionnaire...
August 14, 2017: Resuscitation
Luiza Chwiszczuk, Monica Haraldseid Breitve, Kolbjørn Brønnick, Michaela D Gjerstad, Minna Hynninen, Dag Aarsland, Arvid Rongve
OBJECTIVES: REM sleep behavior disorder (RBD) is associated with cognitive dysfunctions and is a risk factor for development of mild cognitive impairment and dementia. However, it is unknown whether RBD is associated with faster cognitive decline in already established dementia. The main goal of this study was to determine if patients with mild dementia with and without RBD differ in progression rate and in specific neuropsychological measures over 4-year follow-up. METHODS: This longitudinal, prospective study based on data from the DemVest study compares neuropsychological measures in a mild dementia cohort...
2017: Frontiers in Neurology
Jonathan M Grabyan, Robert L Collins, W Alexander Alverson, David K Chen
OBJECTIVE: Performance validity testing is an increasingly vital component of neuropsychological evaluation, though administration of stand-alone performance validity tests (PVTs) can be time-consuming. As the Test of Memory Malingering (TOMM) is among the most commonly used and researched PVTs, much work has focused on creating abbreviated versions while preserving diagnostic accuracy. A recent addition to this effort, errors on the first 10 items of Trial 1 (TOMMe10), was analyzed for its utility in predicting TOMM performance...
August 22, 2017: Clinical Neuropsychologist
Maoyu Li, Yao Meng, Minzhong Wang, Shuang Yang, Hui Wu, Bin Zhao, Guangbin Wang
INTRODUCTION: Subcortical vascular mild cognitive impairment (svMCI) is the predementia stage of subcortical vascular dementia (SVaD). The aim of this research is to explore and compare cerebral gray matter (GM) volume reduction in svMCI patients and SVaD patients, and to investigate the relationship between cerebral GM volume reduction and cognitive deficits. METHODS: Thirty one svMCI patients, 29 SVaD patients, and 31 healthy controls were recruited in our research...
August 2017: Brain and Behavior
Cara F Levitch, Molly E Zimmerman, Naomi Lubin, Namhee Kim, Richard B Lipton, Walter F Stewart, Mimi Kim, Michael L Lipton
OBJECTIVES: The present study examined the relative contribution of recent or long-term heading to neuropsychological function in amateur adult soccer players. PARTICIPANTS AND METHODS: Soccer players completed a baseline questionnaire (HeadCount-12m) to ascertain heading during the prior 12 months (long-term heading, LTH) and an online questionnaire (HeadCount-2w) every 3 months to ascertain heading during the prior 2 weeks (recent heading, RH). Cogstate, a battery of six neuropsychological tests, was administered to assess neuropsychological function...
August 22, 2017: Journal of the International Neuropsychological Society: JINS
Andrea S Vincent, Tresa M Roebuck-Spencer, Eugenia Fuenzalida, Kirby Gilliland
OBJECTIVE: As the use of computer-based neurocognitive assessment is rapidly expanding, the need to systematically study and document key psychometric properties of these measures has become increasingly more salient. To meet this aim, this study examined test-retest reliability and practice effects for the Automated Neuropsychological Assessment Metrics General Neuropsychological Screening battery (ANAM GNS) in a sample of 94 community dwelling adults. METHOD: ANAM GNS was administered and then repeated (alternate form) after 30 days...
August 23, 2017: Clinical Neuropsychologist
B Lemesle, M Planton, B Pagès, J Pariente
Temporal lobe epilepsy (TLE) is a type of epilepsy that often has a negative impact on patients' memory. Despite the importance of patients' complaints in this regard, the difficulties described by these patients are often not easy to demonstrate through a standard neuropsychological assessment. Accelerated long-term forgetting and autobiographical memory disorders are the two main memory impairments reported in the literature in patients with TLE. However, the methods used by different authors to evaluate long-term memory and autobiographical memory are heterogeneous...
August 23, 2017: Revue Neurologique
Gaurav Shukla, Gregory S Alexander, Spyridon Bakas, Rahul Nikam, Kiran Talekar, Joshua D Palmer, Wenyin Shi
Glioblastoma, the most common and most rapidly progressing primary malignant tumor of the central nervous system, continues to portend a dismal prognosis, despite improvements in diagnostic and therapeutic strategies over the last 20 years. The standard of care radiographic characterization of glioblastoma is magnetic resonance imaging (MRI), which is a widely utilized examination in the diagnosis and post-treatment management of patients with glioblastoma. Basic MRI modalities available from any clinical scanner, including native T1-weighted (T1w) and contrast-enhanced (T1CE), T2-weighted (T2w), and T2-fluid-attenuated inversion recovery (T2-FLAIR) sequences, provide critical clinical information about various processes in the tumor environment...
August 2017: Chinese Clinical Oncology
Alison Montagrin, Catarina Saiote, Daniela Schiller
The concept of cognitive map has been proposed as a way to organize our experiences and guide behavior across all domains of cognition. The hippocampus has been identified as the neural substrate supporting cognitive maps for navigating physical space. Recent evidence is broadening the role of the hippocampus to mapping other manner of spaces. Here we focus on the case of social space as a candidate for hippocampal representation, because it combines multiple continuous dimensions and requires dynamic navigation through social contexts...
August 26, 2017: Hippocampus
Kirsty E Bortnik, Guy M McKhann, Marla J Hamberger
Electrical stimulation mapping (ESM) is considered the gold standard for identification of essential language cortex and is especially important in patients for whom classic language landmarks are less useful because of reorganization in response to epileptogenic or neoplastic cortex. However, little is known regarding the reliability of the procedure, particularly over extended time intervals. The authors present the case of a young man with refractory left temporal lobe epilepsy in the setting of a low-grade left temporal tumor who had undergone intraoperative language mapping at age 14 years and repeat mapping at age 25...
May 26, 2017: Journal of Neurosurgery
Melanie R F Greenway, John A Lucas, Anteneh M Feyissa, Sanjeet Grewal, Robert E Wharen, William O Tatum
OBJECTIVE: The objective was to analyze neuropsychological testing data from 15 patients before and after stereotactic laser ablation surgery for temporal lobe epilepsy and to describe the seizure outcomes after stereotactic laser ablation surgery. METHODS: A retrospective review of 15 patients who underwent stereotactic laser ablation and who also underwent neuropsychological testing before and after surgery was performed. Verbal and visual memory was assessed in all 15 patients using California Verbal Learning Test and Wechsler Memory Scale IV...
August 22, 2017: Epilepsy & Behavior: E&B
Satoshi Ookawa, Rei Enatsu, Aya Kanno, Satoko Ochi, Yukinori Akiyama, Tamaki Kobayashi, Yukihiro Yamao, Takayuki Kikuchi, Riki Matsumoto, Takeharu Kunieda, Nobuhiro Mikuni
BACKGROUND: The frontal aslant tract (FAT) is a deep frontal pathway connecting the superior frontal gyrus (SFG) to Broca's area. This fiber is assumed to be associated with language functions, especially speech initiation and spontaneity. OBJECTIVE: The aim of this study was to electrophysiologically investigate this network using cortico-cortical evoked potentials (CCEPs). METHOD: Eight patients with brain tumors or medically intractable focal epilepsies who underwent frontal craniotomy over the language dominant side were enrolled in this study...
August 7, 2017: World Neurosurgery
Bo Gao, Xudong Shen, Mark S Shiroishi, Mingfan Pang, Zhiqian Li, Benxia Yu, Guiquan Shen
BACKGROUND AND PURPOSE: Brain tumors in the corticospinal tract (CST) region are more likely to cause motor dysfunction. The aim of this study is to evaluate the effect of gliomas located in the CST region on motor function with diffusion tensor imaging (DTI) preoperatively. MATERIALS AND METHODS: Forty-five patients with histopathologically confirmed gliomas were included in this pilot study, in all cases (low-grade n = 13, high-grade n = 32) CST but not the motor cortex were involved by the tumor...
2017: PloS One
Nobuyuki Izutsu, Manabu Kinoshita, Takufumi Yanagisawa, Katsuhiko Nakanishi, Mio Sakai, Haruhiko Kishima
Intra-axial brain tumors located at anatomically eloquent areas are challenging conditions. It is often difficult to pursue maximum extent of resection of the tumor in these locations. On the other hand, neuroplasticity takes place in some patients with low-grade glioma and the primary neural functions are known to sometimes shift from conventional "eloquent cortices". In the presented case, the authors detected shift of primary motor function from the precentral gyrus to the postcentral gyrus on magnetoencephalography and functional magnetic resonance imaging in a patient suffering from a lower-grade glioma located at the precentral gyrus...
August 4, 2017: World Neurosurgery
Antonella Castellano, Sara Cirillo, Lorenzo Bello, Marco Riva, Andrea Falini
PURPOSE OF REVIEW: Advanced neuroimaging techniques such as functional MRI (fMRI) and diffusion MR tractography have been increasingly used at every stage of the surgical management of brain gliomas, as a means to improve tumor resection while preserving brain functions. This review provides an overview of the last advancements in the field of functional MRI techniques, with a particular focus on their current clinical use and reliability in the preoperative and intraoperative setting, as well as their future perspectives for personalized multimodal management of patients with gliomas...
August 23, 2017: Current Treatment Options in Neurology
S Fang, J Liang, T Qian, Y Wang, X Liu, X Fan, S Li, Y Wang, T Jiang
BACKGROUND AND PURPOSE: The accuracy of preoperative blood oxygen level-dependent fMRI remains controversial. This study assessed the association between the anatomic location of a tumor and the accuracy of fMRI-based motor function mapping in diffuse lower-grade gliomas. MATERIALS AND METHODS: Thirty-five patients with lower-grade gliomas involving motor areas underwent preoperative blood oxygen level-dependent fMRI scans with grasping tasks and received intraoperative direct cortical stimulation...
August 24, 2017: AJNR. American Journal of Neuroradiology
Kapil Chaudhary, Bhargavi Ramanujam, S Senthil Kumaran, P Sarat Chandra, Ashima Nehra Wadhawan, Ajay Garg, Manjari Tripathi
OBJECTIVES: Patients with drug refractory epilepsy (DRE) and a high level of education may differ in their language recovery after surgery. Our aim was to determine whether there were differences in the extent of improvement and pattern of reorganization of language functions on functional magnetic resonance imaging (fMRI) after surgery to treat refractory temporal lobe epilepsy (TLE) between patients with more than 12 years of formal education versus those with a shorter period of regular schooling...
October 2017: Epilepsy Research
Jun Hua, Xinyuan Miao, Shruti Agarwal, Chetan Bettegowda, Alfredo Quiñones-Hinojosa, John Laterra, Peter C M Van Zijl, James J Pekar, Jay J Pillai
At present, presurgical functional mapping is the most prevalent clinical application of functional magnetic resonance imaging (fMRI). Signal dropouts and distortions caused by susceptibility effects in the current standard echo planar imaging (EPI)-based fMRI images are well-known problems and pose a major hurdle for the application of fMRI in several brain regions, many of which are related to language mapping in presurgical planning. Such artifacts are particularly problematic in patients with previous surgical resection cavities, craniotomy hardware, hemorrhage, and vascular malformation...
June 2017: Tomography: a Journal for Imaging Research
2017-08-28 22:05:10
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