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https://www.readbyqxmd.com/read/28935195/the-dimensionalities-of-lesion-deficit-mapping
#1
Tianbo Xu, Ashwani Jha, Parashkev Nachev
Lesion-deficit mapping remains the most powerful method for localising function in the human brain. As the highest court of appeal where competing theories of cerebral function conflict, it ought to be held to the most stringent inferential standards. Though at first sight elegantly transferable, the mass-univariate statistical framework popularized by functional imaging is demonstrably ill-suited to the task, both theoretically and empirically. The critical difficulty lies with the handling of the data's intrinsically high dimensionality...
September 18, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28934808/competency-based-teaching-in-radiology-implementation-and-evaluation-of-interactive-workstation-based-learning-to-apply-nklm-based-content
#2
Wolfgang Koestner, Wiebke Otten, Till Kaireit, Frank K Wacker, Sabine Dettmer
Purpose New teaching formats are required to implement competency-based teaching in radiology teaching. Therefore, we have established and evaluated two practical competency-based radiological courses. Materials and Methods The courses were held in a multimedia room with 25 computers and a professional DICOM viewer. Students were taught basic image analysis and presented clinical cases with a DICOM viewer under supervision of an instructor using desktop monitoring software. Two courses (elective course and obligatory course) were evaluated by the students (n = 160 and n = 100) and instructors (n = 9) using an anonymized online survey...
September 21, 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28934795/comparisons-of-lesion-volumes-and-shapes-produced-by-a-radiofrequency-system-with-a-cooled-a-protruding-or-a-monopolar-probe
#3
David L Cedeno, Alejandro Vallejo, Courtney A Kelley, Dana M Tilley, Nitesh Kumar
BACKGROUND: Radiofrequency (RF) ablation for denervation has been utilized for decades in chronic pain management. This relies on the proper targeting of the affected nerve which may be obtained by creating an ablation lesion with a shape and volume that optimizes targeting. Various systems designed to improve lesion size are available. These include cooling the active tip (cooled-RF) and protruding the RF electrode outside the active tip (PERF). OBJECTIVES: This study compares lesion volumes of 3 commercially available RF systems: cooled-RF, "V" shaped active cannula and protruding electrode (18 g and 20 g), and monopolar RF (MRF; 16 g, 18 g, and 20 g)...
September 2017: Pain Physician
https://www.readbyqxmd.com/read/28933331/-comparison-of-the-arthroscopic-finding-in-the-knee-joint-and-the-mri-retrospective-study
#4
K Šimeček, P Látal, J Duda, M Šimeček
PURPOSE OF THE STUDY Our retrospective study presents the comparison of the preoperative magnetic resonance imaging of the knee joint - MRI - and the arthroscopic finding - ASC. Its aim is to find out how a positive or a negative finding of MRI corresponds with the operative finding and how much the experience of radiologist contributes to the conformity. MATERIAL AND METHODS The MRI findings of knee joints treated surgically at two departments in 2013 and 2014 were assessed. The MRI was performed in a total of 470 patients who subsequently underwent an arthroscopic surgery...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28931265/diagnostic-and-interventional-optical-angioscopy-in-ex-vivo-carotid-arteries
#5
Luis E Savastano, Neeraj Chaudhary, Carlos Murga-Zamalloa, Michael Wang, Thomas Wang, B Gregory Thompson
BACKGROUND: Angioscopy - or endovascular endoscopy - is a catheter-based technique employing a flexible fiberoptic angioscope to directly visualize arterial lumen. Poor resolution and excessive stiffness of pre-existent angioscopes limited their use clinically. Recent advances resulted in novel fused optical fiber bundle angioscopes with improved flexibility and imaging resolution. Use of these devices in endovascular neurosurgery is still largely unexplored. OBJECTIVE: To evaluate image quality and feasibility of optical angioscopes for diagnostic and interventional neuro-angioscopy in carotid arteries of human cadavers...
February 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28931257/morphometric-analysis-of-the-middle-clinoid-process-using-maxillofacial-computed-tomography-scans
#6
Christopher Miller, Roukoz Chamoun, David Beahm
BACKGROUND: The interest in detailed anatomy of the sella and parasellar regions has resurged recently due to the wide clinical applications of the expanded endoscopic approaches to the skull base. The middle clinoid process (MCP) is a bony structure that can affect wide endoscopic exposure of the sella and parasellar region. OBJECTIVE: To study and analyze the anatomic variations of the MCP in the general population using computed tomography scans. METHODS: A total of 150 maxillofacial computed tomography scans were reviewed to characterize the MCP...
February 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28929695/-effects-of-mongolia-astragali-radix-in-protecting-early-cardiac-and-nephritic-functions-of-patients-of-hypertension-with-metabolic-syndrome
#7
Ning-Yin Li, Xiu-Li Li, Xiao-Ping Zhai, Qiong-Ying Wang, Xiao-Wei Zhang, Feng Zhao, Xiao-Feng Wang, Jian-Yun Fan, Feng Bai, Jing Yu
To explore the effect of Mongolia Astragali Radix produced in Longxi of Gansu province in protecting cardiac and nephritic functions of patients of essential hypertension(EH) with metabolic syndrome(MetS). A total of two hundred and twenty-six EH patients with MetS aged above 18 were selected. Patients were randomly divided to control group(adopted conventional medical treatment), Astragali Radix group 1(added Astragali Radix capsules 10 g•d⁻¹ besides conventional medical treatment) and Astragali Radix group 2(added Astragali Radix capsules 5 g•d⁻¹ besides conventional medical treatment)...
November 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28929425/medium-term-outcomes-after-reversal-of-roux-en-y-gastric-bypass
#8
Gustavo Andrés Arman, J Himpens, R Bolckmans, D Van Compernolle, R Vilallonga, G Leman
BACKGROUND: Roux-en-Y gastric bypass (RYGB) can be reversed into normal anatomy (NA) or into sleeve gastrectomy (NASG) to address undesired side effects. Concomitant hiatal hernia repair (HHR) may be required. Before reversal, some patients benefit from placement of a gastrostomy, mostly to predict the result of recreating the native anatomy. METHODS: Retrospective study on mid-term effects of RYGB reversal to NA and NASG, including clinical and weight evolution, surgical complications, and incidence of gastro-esophageal reflux (GERD)...
September 19, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28928619/percutaneous-management-of-complex-acquired-aortic-coarctation-in-an-adult-with-tetralogy-of-fallot-and-pulmonary-atresia
#9
Michael D Seckeler, Emily Lawson, Brent J Barber, Scott E Klewer
We present the case of a female adult with complex cyanotic congenital heart disease who had long-standing thoracic aortic obstruction due to scarring from earlier surgical procedures. She was symptomatic but felt to be too high risk for surgical intervention. With careful planning, she was able to undergo successful stenting of her aorta with subsequent clinical improvement. This case highlights some of the complexities of caring for adults with congenital heart disease and the importance of a thorough understanding of their anatomy and physiology and prior interventions before undertaking interventions...
September 2017: Annals of Pediatric Cardiology
https://www.readbyqxmd.com/read/28928608/intraocular-pressure-in-children-after-congenital-heart-surgery-a-single-center-study
#10
Sunali Goyal, Paul H Phillips, Lamonda A Corder, Michael J Robertson, Xiomara Garcia, Michael L Schmitz, Punkaj Gupta
BACKGROUND: The impact of varied cardiac physiologies on intraocular pressure (IOP) among children undergoing heart operations is unknown. AIM: The aim of this study was to determine the IOP among children with varying cardiovascular physiologies and varying hemodynamics after their heart operation. SETTING AND DESIGN: This was a prospective, observational study. MATERIALS AND METHODS: Patients ≤18 years undergoing congenital heart surgery were included in this study...
September 2017: Annals of Pediatric Cardiology
https://www.readbyqxmd.com/read/28928031/effect-of-curriculum-changes-on-student-performance-during-general-surgical-clerkship
#11
Elizabeth A Hagan, Bernard M Jaffe
INTRODUCTION: Good clinical knowledge of anatomy, taught in medical school, is necessary for practicing physicians. It is a key feature of performance on the United States Medical Licensing Examination Step 1 score. Student performance on anatomy is also an early indicator of overall medical student performance. Unfortunately, curricular time provided for the teaching of anatomy has declined significantly over the last 30 years, leading to growing concerns that the anatomical knowledge of new medical graduates may not be adequate...
September 15, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28927909/monolateral-pterional-keyhole-approaches-to-bilateral-cerebral-aneurysms-anatomy-and-clinical-application
#12
Liang-Hong Yu, Huang-Cheng Shang-Guan, Guo-Rong Chen, Shu-Fa Zheng, Yuan-Xiang Lin, Zhang-Ya Lin, Pei-Sen Yao, De-Zhi Kang
OBJECTIVE: To study the anatomy and clinical application of monolateral pterional keyhole approach for treating bilateral cerebral aneurysms. MATHERIAL AND METHODS: 12 alcohol-preserved cadaveric heads underwent right pterional keyhole approaches for management of simulative contralateral aneurysms. Length of the contralateral middle cerebral artery (MCA), distal internal carotid artery (DICA), anterior cerebral artery (ACA), and ophthalmic segment of internal carotid artery (OICA) was recorded...
September 16, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28927207/surgical-approaches-to-the-temporal-horn-an-anatomic-analysis-of-white-matter-tract-interruption
#13
Paulo A S Kadri, Jean G de Oliveira, Niklaus Krayenbühl, Ugur Türe, Evandro P L de Oliveira, Ossama Al-Mefty, Guilherme C Ribas
BACKGROUND: Surgical access to the temporal horn is necessary to treat tumors and vascular lesions, but is used mainly in patients with mediobasal temporal epilepsy. The surgical approaches to this cavity fall into 3 primary categories: lateral, inferior, and transsylvian. The current neurosurgical literature has underestimated the interruption of involved fiber bundles and the correlated clinical manifestations. OBJECTIVE: To delineate the interruption of fiber bundles during the different approaches to the temporal horn...
April 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28926610/image-similarity-evaluation-of-the-bulk-density-assigned-synthetic-ct-derived-from-mri-of-intracranial-regions-for-radiation-treatment
#14
Shin-Wook Kim, Hun-Joo Shin, Jin-Ho Hwang, Jin-Sol Shin, Sung-Kwang Park, Jin-Young Kim, Ki-Jun Kim, Chul-Seung Kay, Young-Nam Kang
OBJECTIVE: Various methods for radiation-dose calculation have been investigated over previous decades, focusing on the use of magnetic resonance imaging (MRI) only. The bulk-density-assignment method based on manual segmentation has exhibited promising results compared to dose-calculation with computed tomography (CT). However, this method cannot be easily implemented in clinical practice due to its time-consuming nature. Therefore, we investigated an automatic anatomy segmentation method with the intention of providing the proper methodology to evaluate synthetic CT images for a radiation-dose calculation based on MR images...
2017: PloS One
https://www.readbyqxmd.com/read/28926210/clinical-relevance-of-retinal-structure-in-children-with-laser-treated-retinopathy-of-prematurity-versus-controls-using-optical-coherence-tomography
#15
Florina Stoica, Adela Chirita-Emandi, Nicoleta Andreescu, Alina Stanciu, Cristian G Zimbru, Maria Puiu
PURPOSE: We aimed to assess the macular anatomy using spectral domain optical coherence tomography (SD-OCT), in children born preterm who had laser-treated retinopathy of prematurity (ROP), and to investigate the relationship between structural changes in macula and visual function. METHODS: Thirty-seven 3-8 years old children were included in the study in two groups: 20 children born preterm [(<34 weeks of gestation, birthweight (BW) <2000 g)] who had laser-treated ROP in the Neonatology Department, Municipal Clinical Emergency Hospital of Timisoara, Romania; and 17 controls (children born at term, without eye disease, matched for age and gender)...
September 19, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28926197/epiretinal-membrane-surgery-an-analysis-of-2-step-sequential-or-combined-phacovitrectomy-surgery-on-refraction-and-macular-anatomy-in-a-prospective-trial
#16
Hassan Hamoudi, Ulrik Correll Christensen, Morten La Cour
PURPOSE: To assess the impact of combined phacoemulsification-vitrectomy and sequential surgery for idiopathic epiretinal membrane (ERM) on refractive error (RE) and macular morphology. METHODS: In this prospective clinical trial, we allocated phakic eyes with ERM to (1) cataract surgery and subsequent pars plana vitrectomy (PPV) (CAT group), (2) PPV and subsequent cataract surgery (VIT group) or (3) phaco-vitrectomy (COMBI group). Examinations were at baseline, one month after each surgery, and at 3 months and 12 months of follow-up...
September 19, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28924737/contribution-to-the-anatomical-nomenclature-concerning-lower-limb-anatomy
#17
David Kachlik, Vladimir Musil, Vaclav Baca
PURPOSE: The aim of this article is to extend and revise the sections of Terminologia Anatomica (TA) dealing with the lower limb structures and to justify the use of newly proposed anatomical terms in clinical medicine, education, and research. METHODS: Anatomical terms were gathered during our educational experience from anatomical textbooks and journals and compared with the four previous editions of the official Latin anatomical nomenclature. RESULTS: The authors summarise 270 terms with their definitions and explanations for both constant and variable morphological structures (bones, joints, muscles, vessels, nerves and superficial structures) of the hip, thigh, knee, leg, ankle, and foot completed with several grammatical remarks and some general anatomical terms...
September 18, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28923273/surgeon-s-guide-to-facial-soft-tissue-filler-injections-relevant-anatomy-and-safety-considerations
#18
REVIEW
Elie M Ferneini, Steven Hapelas, James Watras, Antoine M Ferneini, Drew Weyman, Jenna Fewins
The purpose of this study is to provide a review of the relevant facial anatomy related to soft tissue filler injections. Facial fillers are used daily in our clinical practice. Although their use is safe and predictable, adverse events do occur. Some of these dire events include vascular complications leading to blindness, ischemia, and even stroke. Proper knowledge and understanding of the anatomic landmarks can minimize the risk of these vascular events. In addition, early recognition and treatment are necessary to prevent permanent complications...
August 24, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28922705/from-ancient-to-avant-garde-a-review-of-traditional-and-modern-multimodal-approaches-to-surgical-anatomy-education
#19
REVIEW
Minhao Hu, David Wattchow, Dayan de Fontgalland
The landscape of surgical anatomy education is progressively changing. Traditional methods, such as cadaveric dissection and didacticism are being increasingly phased out in undergraduate courses for multimodal approaches incorporating problem-based learning, radiology and computer-based simulations. Although effective at clinically contextualizing and integrating anatomical information, these approaches may be a poor substitute for fostering a grasp of foundational 'pure' anatomy. Dissection is ideal for this purpose and hence remains the cornerstone of anatomical education...
September 18, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28922191/acr-spr-str-practice-parameter-for-the-performance-of-cardiac-positron-emission-tomography-computed-tomography-pet-ct-imaging
#20
Rathan M Subramaniam, Warren R Janowitz, Geoffrey B Johnson, Martin A Lodge, Marguerite T Parisi, Mark R Ferguson, Jeffrey C Hellinger, Gregory W Gladish, Narainder K Gupta
This clinical practice parameter has been developed collaboratively by the American College of Radiology (ACR), the Society for Pediatric Radiology (SPR), and the Society of Thoracic Radiology (STR). This document is intended to act as a guide for physicians performing and interpreting positron emission tomography-computed tomography (PET/CT) of cardiac diseases in adults and children. The primary value of cardiac PET/CT imaging include evaluation of perfusion, function, viability, inflammation, anatomy, and risk stratification for cardiac-related events such as myocardial infarction and death...
September 15, 2017: Clinical Nuclear Medicine
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