keyword
MENU ▼
Read by QxMD icon Read
search

Functional magnetic resonance imaging

keyword
https://www.readbyqxmd.com/read/28635336/new-advances-in-focal-therapy-for-early-stage-prostate-cancer
#1
Kae Jack Tay, Ariel A Schulman, Christina Sze, Efrat Tsivian, Thomas J Polascik
Prostate focal therapy offers men the opportunity to achieve oncological control while preserving sexual and urinary function. The prerequisites for successful focal therapy are to accurately identify, localize and completely ablate the clinically significant cancer(s) within the prostate. We aim to evaluate the evidence for current and upcoming technologies that could shape the future of prostate cancer focal therapy in the next five years. Areas Covered: Current literature on advances in patient selection using imaging, biopsy and biomarkers, ablation techniques and adjuvant treatments for focal therapy are summarized...
June 21, 2017: Expert Review of Anticancer Therapy
https://www.readbyqxmd.com/read/28634696/prominent-midfoot-involvement-in-children-with-enthesitis-related-arthritis-category-of-juvenile-idiopathic-arthritis
#2
Sanat Phatak, Namita Mohindra, Abhishek Zanwar, Amita Aggarwal
Foot involvement is common in juvenile idiopathic arthritis (JIA) but is often unrecognized and difficult to treat. This study was done to assess clinical and radiological involvement of the feet and its impact on function in Indian children with enthesitis-related arthritis (ERA). We enrolled consecutive children with ERA with disease duration of less than 5 years. All patients underwent clinical examination of the feet and filled the juvenile arthritis foot index (JAFI) questionnaire. Ultrasound (US) of foot joints and entheses and extremity magnetic resonance imaging (MRI) scan of one foot were done...
June 20, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28634448/from-behavioral-facilitation-to-inhibition-the-neuronal-correlates-of-the-orienting-and-reorienting-of-auditory-attention
#3
Faith M Hanlon, Andrew B Dodd, Josef M Ling, Juan R Bustillo, Christopher C Abbott, Andrew R Mayer
Successful adaptive behavior relies on the ability to automatically (bottom-up) orient attention to different locations in the environment. This results in a biphasic pattern in which reaction times (RT) are faster for stimuli that occur in the same spatial location (valid) for the first few hundred milliseconds, which is termed facilitation. This is followed by faster RT for stimuli that appear in novel locations (invalid) after longer delays, termed inhibition of return. The neuronal areas and networks involved in the transition between states of facilitation and inhibition remain poorly understood, especially for auditory stimuli...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28634390/increased-glutamate-in-somatosensory-cortex-in-functional-dyspepsia
#4
Arthur D P Mak, Georg Northoff, David K W Yeung, Winnie C W Chu, Steve C N Hui, Cynthia Cheung, Jessica Ching, Linda Lam, Sing Lee, Justin Wu
Functional Dyspepsia-Post-prandial Distress Syndrome (FD-PDS) was associated with mood-related increases in resting activity and lowered activation threshold in the somatosensory cortex (SSC), insula and perigenual anterior cingulate cortex(pgACC) in functional imaging studies. The underlying cortical neurochemical changes are unknown. We performed proton Magnetic Resonance Spectroscopy (1H-MRS) on 17 consecutive tertiary clinic-recruited psychotropic-naïve Rome III FD-PDS female and 17 age-sex matched healthy controls...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28633971/manganese-enhanced-magnetic-resonance-imaging-depicts-brain-activity-in-models-of-acute-and-chronic-pain-a-new-window-to-study-experimental-spontaneous-pain
#5
I M Devonshire, J J Burston, L Xu, A Lillywhite, M J Prior, D J G Watson, C M Greenspon, S J Iwabuchi, D P Auer, V Chapman
Application of functional imaging techniques to animal models is vital to understand pain mechanisms, but is often confounded by the need to limit movement artefacts with anaesthesia, and a focus on evoked responses rather than clinically relevant spontaneous pain and related hyperalgesia. The aim of the present study was to investigate the potential of manganese-enhanced magnetic resonance imaging (MEMRI) to measure neural responses during on-going pain that underpins hyperalgesia in pre-clinical models of nociception...
June 17, 2017: NeuroImage
https://www.readbyqxmd.com/read/28633773/magnetic-resonance-imaging-and-clinical-outcomes-of-laser-therapy-ultrasound-therapy-and-extracorporeal-shock-wave-therapy-for-treatment-of-plantar-fasciitis-a-randomized-controlled-trial
#6
Aslihan Ulusoy, Lale Cerrahoglu, Sebnem Orguc
We determined and compared the effectiveness of low-level laser therapy (LLLT), therapeutic ultrasound (US) therapy, and extracorporeal shock wave therapy (ESWT) using magnetic resonance imaging (MRI). We performed a randomized, prospective, comparative clinical study. A total of 60 patients with a diagnosis of chronic plantar fasciitis were divided randomly into 3 treatment groups: group 1 underwent 15 sessions of LLLT (8 J/cm(2); 830 nm); group 2 underwent 15 sessions of continuous US (1 mHz; 2 W/cm(2)); and group 3 underwent 3 sessions of ESWT (2000 shocks)...
July 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28633562/advances-in-imaging-brain-metabolism
#7
Fahmeed Hyder, Douglas L Rothman
Metabolism is central to neuroimaging because it can reveal pathways by which neuronal and glial cells use nutrients to fuel their growth and function. We focus on advanced magnetic resonance imaging (MRI) and magnetic resonance spectroscopy (MRS) methods used in brain metabolic studies. (17)O-MRS and (31)P-MRS, respectively, provide rates of oxygen use and ATP synthesis inside mitochondria, whereas (19)F-MRS enables measurement of cytosolic glucose metabolism. Calibrated functional MRI (fMRI), an advanced form of fMRI that uses contrast generated by deoxyhemoglobin, provides maps of oxygen use that track neuronal firing across brain regions...
June 21, 2017: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/28633363/development-initial-testing-and-challenges-of-an-ecologically-valid-reward-prediction-error-fmri-task-for-alcoholism
#8
Anita Cservenka, Kelly E Courtney, Dara G Ghahremani, Kent E Hutchison, Lara A Ray
Aims: To advance translational studies of the role of reward prediction error (PE) in alcohol use disorder, the present study sought to develop and conduct an initial test of an alcohol-specific PE task paradigm using functional magnetic resonance imaging in humans. Methods: Alcohol dependent or social drinkers received small tastes of their preferred alcohol beverage or control beverage, with preceding visual cues indicating whether alcohol (or water) would be delivered...
June 14, 2017: Alcohol and Alcoholism: International Journal of the Medical Council on Alcoholism
https://www.readbyqxmd.com/read/28633321/places-in-the-brain-bridging-layout-and-object-geometry-in-scene-selective-cortex
#9
Moira R Dillon, Andrew S Persichetti, Elizabeth S Spelke, Daniel D Dilks
Diverse animal species primarily rely on sense (left-right) and egocentric distance (proximal-distal) when navigating the environment. Recent neuroimaging studies with human adults show that this information is represented in 2 scene-selective cortical regions-the occipital place area (OPA) and retrosplenial complex (RSC)-but not in a third scene-selective region-the parahippocampal place area (PPA). What geometric properties, then, does the PPA represent, and what is its role in scene processing? Here we hypothesize that the PPA represents relative length and angle, the geometric properties classically associated with object recognition, but only in the context of large extended surfaces that compose the layout of a scene...
June 13, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28633076/resting-state-functional-connectivity-of-anterior-and-posterior-hippocampus-in-posttraumatic-stress-disorder
#10
Amit Lazarov, Xi Zhu, Benjamin Suarez-Jimenez, Bret R Rutherford, Yuval Neria
Posttraumatic stress disorder (PTSD) has been associated with altered resting-state functional connectivity (rs-FC) of several brain regions within the salience (SN) and default-mode (DMN) networks, including the hippocampus. However, most rs-FC studies have not focused primarily on the hippocampus, nor have they appreciated its structural heterogeneity, despite clear evidence for a dissociation between posterior and anterior hippocampal connectivity. Here, we examine rs-FC of anterior and posterior hippocampus with key regions in the SN (amygdala, insula, and dorsal anterior cingulate cortex/pre-supplementary motor area) and DMN (ventromedial prefrontal cortex, posterior cingulate cortex, and precuneus) previously implicated in PTSD, using a seed-based approach...
June 13, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28632652/utility-of-cardiac-magnetic-resonance-imaging-in-the-management-of-adult-congenital-heart-disease
#11
Giuseppe Muscogiuri, Aurelio Secinaro, Paolo Ciliberti, Megan Fuqua, Arni Nutting
The increasing number of patients with adult congenital heart disease (ACHD) calls for the development of noninvasive imaging techniques that allow a long-term evaluation of native and postsurgical anatomy and function. Echocardiography remains the imaging modality of choice for congenital heart disease, but it is affected by limited acoustic windows and poor tissue characterization. Cardiac computed tomography and cardiac catheter angiography are 2 valid alternatives for the anatomic and functional assessment of ACHD; however, both use ionizing radiation, and cardiac catheter angiography requires an invasive approach...
July 2017: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/28632651/imaging-in-adult-congenital-heart-disease
#12
Stephanie S Gaydos, Akos Varga-Szemes, Rochelle N Judd, Pal Suranyi, David Gregg
There has been tremendous growth in the population of adults with congenital heart disease (CHD) over the last few decades because of advances in medical care. Whereas some cases are cured during childhood, most patients instead undergo palliation, which leaves them at risk for late complications. Lifelong clinical follow-up involving serial multimodality imaging is helpful to monitor and guide the treatment of late complications. Imaging of these individuals is challenging because of their unique anatomy and therefore requires careful consideration on a case-by-case basis...
July 2017: Journal of Thoracic Imaging
https://www.readbyqxmd.com/read/28632558/the-long-term-clinical-effect-of-minimal-invasive-tlif-technique-in-1-segment-lumbar-disease
#13
Yi-Bing Li, Xiao-Dong Wang, Hong-Wei Yan, Ding-Jun Hao, Zheng-Hua Liu
STUDY DESIGN: A prospective cohort double-center study. OBJECTIVE: To assess the clinical effect of minimally invasive transforaminal lumbar interbody fusion (miTLIF) using the tunnel technique. SUMMARY OF BACKGROUND DATA: A series of short-term studies have indicated that miTLIF could reduce blood loss and improve clinical results. However, long-term clinical study and magnetic resonance imaging research are still scare. METHODS: From January 2008 to January 2009, 187 patients with 1-segment lumbar disease requiring intervertebral fusion were enrolled in this study...
July 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28632557/vertebral-end-plate-perforation-for-intervertebral-disc-height-preservation-after-single-level-lumbar-discectomy-a-randomized-controlled-trial
#14
Miha Vodičar, Robert Košak, Matevž Gorenšek, Robert Korez, Tomaž Vrtovec, Jadran Koder, Vane Antolič, Rok Vengust
STUDY DESIGN: Pilot single-centre, stratified, prospective, randomized, double-blinded, parallel-group, controlled study. OBJECTIVE: To determine whether vertebral end-plate perforation after lumbar discectomy causes annulus reparation and intervertebral disc volume restoration. To determine that after 6 months there would be no clinical differences between the control and study group. SUMMARY OF BACKGROUND DATA: Low back pain is the most common long-term complication after lumbar discectomy...
July 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28631696/-ankylosing-spondylitis-and-non-radiographic-axial-spondyloarthritis-two-stages-of-disease
#15
D G Rumyantseva, T V Dubinina, A B Demina, O A Rumyantseva, E M Agafonova, A V Smirnov, Sh F Erdes
AIM: To compare the clinical manifestations of ankylosing spondylitis (AS) and non-radiographic axial spondyloarthritis (nrAxSpA). SUBJECTS AND METHODS: A Moscow early spondyloarthritis cohort has now included 132 patients with axial spondyloarthritis, of whom 69 patients who have been followed up at least 12 months are to be involved in a preliminary analysis. The mean age at the time of inclusion in the study was 28.1±5.5 years; the mean disease duration was 24...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28631336/a-neuroimaging-approach-to-capture-cognitive-reserve-application-to-alzheimer-s-disease
#16
Anna C van Loenhoud, Alle Meije Wink, Colin Groot, Sander C J Verfaillie, Jos Twisk, Frederik Barkhof, Bart van Berckel, Philip Scheltens, Wiesje M van der Flier, Rik Ossenkoppele
Cognitive reserve (CR) explains interindividual differences in the ability to maintain cognitive function in the presence of neuropathology. We developed a neuroimaging approach including a measure of brain atrophy and cognition to capture this construct. In a group of 511 Alzheimer's disease (AD) biomarker-positive subjects in different stages across the disease spectrum, we performed 3T magnetic resonance imaging and predicted gray matter (GM) volume in each voxel based on cognitive performance (i.e. a global cognitive composite score), adjusted for age, sex, disease stage, premorbid brain size (i...
June 20, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28631281/detecting-large-scale-networks-in-the-human-brain-using-high-density-electroencephalography
#17
Quanying Liu, Seyedehrezvan Farahibozorg, Camillo Porcaro, Nicole Wenderoth, Dante Mantini
High-density electroencephalography (hdEEG) is an emerging brain imaging technique that can be used to investigate fast dynamics of electrical activity in the healthy and the diseased human brain. Its applications are however currently limited by a number of methodological issues, among which the difficulty in obtaining accurate source localizations. In particular, these issues have so far prevented EEG studies from reporting brain networks similar to those previously detected by functional magnetic resonance imaging (fMRI)...
June 20, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28631080/comparison-of-volumetric-and-functional-parameters-in-simultaneous-cardiac-pet-mr-feasibility-of-volumetric-assessment-with-residual-activity-from-prior-pet-ct
#18
C Lücke, B Oppolzer, P Werner, B Foldyna, P Lurz, T Jochimsen, B Brenneis, L Lehmkuhl, B Sattler, M Grothoff, H Barthel, O Sabri, M Gutberlet
OBJECTIVE: To compare cardiac left ventricular (LV) parameters in simultaneously acquired hybrid fluorine-18-fluorodeoxyglucose ([18F] FDG) positron emission tomography/magnetic resonance imaging (PET/MRI) in patients with residual tracer activity of upstream PET/CT. METHODS: Twenty-nine patients (23 men, age 58±17 years) underwent cardiac PET/MRI either directly after a non-cardiac PET/CT with homogenous cardiac [18F] FDG uptake (n=20) or for viability assessment (n=9)...
June 19, 2017: European Radiology
https://www.readbyqxmd.com/read/28631005/phonological-working-memory-for-words-and-nonwords-in-cerebral-cortex
#19
Tyler K Perrachione, Satrajit S Ghosh, Irina Ostrovskaya, John D E Gabrieli, Ioulia Kovelman
Purpose: The primary purpose of this study was to identify the brain bases of phonological working memory (the short-term maintenance of speech sounds) using behavioral tasks analogous to clinically sensitive assessments of nonword repetition. The secondary purpose of the study was to identify how individual differences in brain activation were related to participants' nonword repetition abilities. Method: We used functional magnetic resonance imaging to measure neurophysiological response during a nonword discrimination task derived from standard clinical assessments of phonological working memory...
June 19, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28629974/the-effects-of-changes-in-object-location-on-object-identity-detection%C3%AF-a-simultaneous-eeg-fmri-study
#20
Ping Yang, Chenggui Fan, Min Wang, Noa Fogelson, Ling Li
Object identity and location are bound together to form a unique integration that is maintained and processed in visual working memory (VWM). Changes in task-irrelevant object location have been shown to impair the retrieval of memorial representations and the detection of object identity changes. However, the neural correlates of this cognitive process remain largely unknown. In the present study, we aim to investigate the underlying brain activation during object color change detection and the modulatory effects of changes in object location and VWM load...
June 16, 2017: NeuroImage
keyword
keyword
76218
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"