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MRI GUIDELINES

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https://www.readbyqxmd.com/read/28637110/guidelines-for-cauda-equina-syndrome-red-flags-and-white-flags-systematic-review-and-implications-for-triage
#1
Nicholas V Todd
INTRODUCTION: Patients with cauda equina syndrome (CES) are frequently referred late when neurological damage cannot be reversed. National Guidelines for emergency referral, imaging and treatment of CES contain symptoms and/or signs that are those of late often, irreversible CES. Referral at this stage may be too late for that patient. METHODS: Seven sources were reviewed. Advice re emergency referral/imaging/treatment were reviewed. Symptoms/signs were compared with a standard classification of CES...
March 2, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/28630757/the-patellofemoral-joint-from-dysplasia-to-dislocation
#2
Stefano Zaffagnini, Alberto Grassi, Gianluca Zocco, Michele Attilo Rosa, Cecilia Signorelli, Giulio Maria Marcheggiani Muccioli
Patellofemoral dysplasia is a major predisposing factor for instability of the patellofemoral joint. However, there is no consensus as to whether patellofemoral dysplasia is genetic in origin, caused by imbalanced forces producing maltracking and remodelling of the trochlea during infancy and growth, or due to other unknown and unexplored factors.The biomechanical effects of patellofemoral dysplasia on patellar stability and on surgical procedures have not been fully investigated. Also, different anatomical and demographic risk factors have been suggested, in an attempt to identify the recurrent dislocators...
May 2017: EFORT open reviews
https://www.readbyqxmd.com/read/28630592/the-role-of-different-pi-rads-versions-in-prostate-multiparametric-magnetic-resonance-tomography-assessment
#3
Paulius Aliukonis, Tadas Letauta, Rūta Briedienė, Ieva Naruševičiūtė, Simona Letautienė
Background. Standardised Prostate Imaging Reporting and Data System (PI-RADS) guidelines for the assessment of prostate alterations were designed for the assessment of prostate pathology. Published by the ESUR in 2012, PI-RADS v1 was based on the total score of different MRI sequences with subsequent calculation. PI-RADS v2 was published by the American College of Radiology in 2015 and featured different assessment criteria for prostate peripheral and transitory zones. Aim. To assess the correlations of PI-RADS v1 and PI-RADS v2 with Gleason score values and to define their predictive values of the diagnosis of prostate cancer...
2017: Acta medica Lituanica
https://www.readbyqxmd.com/read/28629720/exploring-connectivity-with-large-scale-granger-causality-on-resting-state-functional-mri
#4
Adora M DSouza, Anas Z Abidin, Lutz Leistritz, Axel Wismüller
BACKGROUND: Large-scale Granger causality (lsGC) is a recently developed, resting-state functional MRI (fMRI) connectivity analysis approach that estimates multivariate voxel-resolution connectivity. Unlike most commonly used multivariate approaches, which establish coarse-resolution connectivity by aggregating voxel time-series avoiding an underdetermined problem, lsGC estimates voxel-resolution, fine-grained connectivity by incorporating an embedded dimension reduction. NEW METHOD: We investigate application of lsGC on realistic fMRI simulations, modeling smoothing of neuronal activity by the hemodynamic response function and repetition time (TR), and empirical resting-state fMRI data...
June 16, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28625903/the-need-for-clinical-practice-guidelines-in-assessing-and-managing-perioperative-neurologic-deficit-results-from-a-survey-of-the-aospine-international-community
#5
A Nater, J C Murray, A R Martin, A Nouri, L Tetreault, M G Fehlings
OBJECTIVES: There is no standardized approach to assess and manage perioperative neurologic deficit (PND) in patients undergoing spinal surgery. This survey aimed to evaluate the awareness and usage of clinical practice guidelines (CPGs) as well as investigate how surgeons performing spine surgeries feel about and manage PND, and how they perceive the value of developing CPGs for the management of PND. METHODS: An invitation to participate was sent to the AOSpine International community...
June 15, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28624970/cardiovascular-implantable-electronic-devices-a-review-of-the-dangers-and-difficulties-in-mr-scanning-and-attempts-to-improve-safety
#6
REVIEW
Pei Ghim Poh, Charlene Liew, Colin Yeo, Le Roy Chong, Andrew Tan, Angeline Poh
An increasing number of patients are being treated with cardiovascular implantable electronic devices (CIEDs), many of which are MR conditional. There is a lack of literature on the safe scanning of MR conditional CIEDs. This review article discusses MR imaging safety in patients with implanted CIEDs. Guidelines on safe use and indications of imaging patients with MR conditional CIEDs are described, followed by a pictorial essay of the radiographic features of these devices. We also discuss the challenges of monitoring the patient in the MR environment, advances in MRI conditional imaging of devices, availability, limitations and workflow including vendor-specific and other collaborative efforts to simplify the scanning process...
June 17, 2017: Insights Into Imaging
https://www.readbyqxmd.com/read/28624528/derivation-of-an-occupational-exposure-level-for-manganese-in-welding-fumes
#7
Lisa A Bailey, Laura E Kerper, Julie E Goodman
Exposure to high levels of manganese (Mn) in occupational settings is known to lead to adverse neurological effects. Since Mn is an essential nutrient, there are mechanisms that maintain its homeostatic control in the body, and there is some level of Mn in air that does not perturb Mn homeostasis. However, the Mn exposure concentrations at which no adverse effects are expected in occupational settings vary considerably across regulatory agencies. We set out to derive a Mn Occupational Exposure Level (OEL) for welders based on a review of studies that evaluated Mn exposure concentrations from welding fumes and: (1) neurological effects in welders; (2) levels of Mn in the brains of welders (via pallidal index [PI] estimated from magnetic resonance imaging [MRI]); (3) other biomarkers of Mn exposure in welders (i...
June 14, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/28622797/making-the-best-value-of-clinical-radiology-irefer-guidelines-8th-edition
#8
D Remedios, B France, M Alexander
New uses of medical imaging as well as over-diagnosis and wasteful imaging have led to a 10% per annum growth in computed tomography (CT) and magnetic resonance imaging (MRI). Personalised value to the patient will be helped by referral guidelines for the best test first, adding evidence-based technical value to the investigation to answer the clinical question, thus providing allocative value to the commissioners of medical imaging. Appropriate imaging is driven by the need for effective decisions, radiation safety, and cost awareness...
June 13, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28617686/imaging-adult-patients-with-coarctation-of-the-aorta
#9
Akanksha N Thakkar, Ponraj Chinnadurai, C Huie Lin
PURPOSE OF REVIEW: To provide an overview of current recommendations and techniques used to image coarctations of the aorta. RECENT FINDINGS: Imaging of coarctation of the aorta in adults is moving away from conventional techniques such as echocardiography and invasive angiography. Echocardiography may assist in making the diagnosis but is limited in its ability to quantify the severity of coarctations. Current guidelines recommend that every patient with a coarctation must undergo a computed tomography (CT) or MRI scan for accurate delineation of morphology...
June 15, 2017: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/28615334/diffusion-weighted-tractography-in-the-common-marmoset-monkey-at-9-4-t
#10
David J Schaeffer, Ramina Adam, Kyle M Gilbert, Joseph S Gati, Alex X Li, Ravi S Menon, Stefan Everling
The common marmoset (Callithrix jacchus) is a small New World primate that is becoming increasingly popular in the neurosciences as an animal model of preclinical human disease. With several major disorders characterized by alterations in neural white matter (e.g., multiple sclerosis, Alzheimer's, schizophrenia) proposed to be transgenically modelled using marmosets, the ability to reliably isolate and characterize major white matter fiber tracts with MRI will be of utility for evaluating structural brain changes related to disease processes and symptomatology...
June 14, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28610905/anal-cancer-french-intergroup-clinical-practice-guidelines-for-diagnosis-treatment-and-follow-up
#11
REVIEW
Laurence Moureau-Zabotto, Veronique Vendrely, Laurent Abramowitz, Christophe Borg, Eric Francois, Diane Goere, Florence Huguet, Didier Peiffert, Laurent Siproudhis, Michel Ducreux, Olivier Bouché
INTRODUCTION: This document is a summary of the French Intergroup guidelines regarding the management of anal carcinomas, published in November 2016. METHODS: It is a collaborative work produced under the auspices of the majority of the French medical societies involved in the management of anal cancer. It is based on the previous guidelines published in 2010. Recommendations are graded in three categories, according to the amount of evidence found in the literature...
May 23, 2017: Digestive and Liver Disease
https://www.readbyqxmd.com/read/28609188/subtraction-images-of-gadoxetic-acid-enhanced-mri-effect-on-the-diagnostic-performance-for-focal-hepatic-lesions-in-patients-at-risk-for-hepatocellular-carcinoma
#12
Sang Hyun Choi, So Yeon Kim, Seung Soo Lee, Ju Hyun Shim, Jae Ho Byun, Seunghee Baek, Moon-Gyu Lee
OBJECTIVE: The purpose of this study is to evaluate the effect of subtraction images of gadoxetic acid-enhanced MRI on the image interpretation of focal hepatic lesions in patients at risk for hepatocellular carcinoma (HCC). MATERIALS AND METHODS: We retrospectively analyzed 255 malignant nodules from 233 patients with chronic hepatitis or liver cirrhosis (187 men and 46 women; mean age, 55.2 years) who underwent preoperative gadoxetic acid-enhanced MRI and surgical resection...
June 13, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28608184/assessment-of-left-ventricular-contraction-patterns-using-gated-spect-mpi-to-predict-cardiac-resynchronization-therapy-response
#13
Ningchao Tao, Yuanhao Qiu, Haipeng Tang, Zhiyong Qian, Hongping Wu, Rui Zhu, Yao Wang, Xiaofeng Hou, Weihua Zhou, Jiangang Zou
BACKGROUND: The U-shaped left ventricular (LV) contraction pattern, identified by MRI or echocardiography, is associated with improved CRT response. Gated SPECT MPI can measure both myocardial viability and mechanical dyssynchrony in a single scan. The aim of this study is to examine the relationship of the LV contraction pattern and the response of CRT in patients with left bundle branch block (LBBB). METHODS: Fifty-eight patients who met CRT guidelines and who had pre-CRT MPI were enrolled...
June 12, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28606654/management-of-marfan-syndrome-during-pregnancy-a-real-world-experience-from-a-joint-cardiac-obstetric-service
#14
Joanna C E-S Lim, Matthew Cauldwell, Roshni R Patel, Anselm Uebing, Ruth A Curry, Mark R Johnson, Michael A Gatzoulis, Lorna Swan
BACKGROUND: Pregnancy in Marfan Syndrome (MFS) is associated with increased maternal risk of cardiovascular events. Given the maternal and genetic risks, pre-conception counselling is essential to facilitate informed choices. Multidisciplinary antenatal care with regular imaging is mandatory and best delivered through a Joint Cardiac Obstetric Service (JCOS). The aim of this study was to compare the care delivered in a JCOS against recognised international standards (European Society of Cardiology (ESC))...
May 22, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28594706/diagnosis-of-tuberous-sclerosis-complex-in-a-patient-referred-for-uncontrolled-hypertension-and-renal-dysfunction-a-case-highlighting-the-importance-of-proper-diagnostic-work-up-of-hypertensive-patients
#15
Pantelis A Sarafidis, Athanasios Bikos, Charalampos Loutradis, Stergios Tzikas, Efstratios Vakirlis, Eugenia Avdelidou, Dimitrios Zafeiriou, Aikaterini Papagianni, Vasileios Vassilikos
: We report a case of a 39-year-old woman with resistant hypertension and renal dysfunction. The patient was hospitalized 3 months earlier for dyspnea at the Department of Cardiology, where she was diagnosed with heart failure (left ventricle injection fraction: 25-30%), pulmonary hypertension, chronic kidney disease (serum creatinine: 1.58 mg/dl), and resistant hypertension and discharged with optimal heart failure treatment. At presentation to our clinic, apart from uncontrolled hypertension for more than 10 years and history of pre-eclampsia and fetal loss, the patient had obesity (BMI: 38 kg/m) and facial fibromas...
June 7, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28583279/pet-in-benign-bone-marrow-disorders
#16
REVIEW
Wouter van der Bruggen, Andor W J M Glaudemans, Edo Vellenga, Riemer H J A Slart
This review aims to describe the current status of benign bone marrow (BM) imaging using PET. BM imaging is important as the BM is not only involved in poiesis of different vital cell lines and can be affected by primary BM disorders, but it is also frequently affected by several extramedullary diseases. Indications for the use of PET in benign BM disorders are the detection of extramedullary hematopoiesis, evaluation of patients with a discrepancy between BM histology and clinical status, visualizing BM infarctions, location of the optimal site for BM biopsy, diagnosing and staging of other hematological BM disorders, evaluation of radiotherapy effect on BM, and evaluation of BM transplantation...
July 2017: Seminars in Nuclear Medicine
https://www.readbyqxmd.com/read/28572489/head-to-head-comparison-of-chest-x-ray-head-and-neck-mri-chest-ct-head-and-neck-mri-and-18-f-fdg-pet-ct-for-detection-of-distant-metastases-and-synchronous-cancer-in-oral-pharyngeal-and-laryngeal-cancer
#17
Max Rohde, Anne L Nielsen, Jørgen Johansen, Jens A Sørensen, Anabel Diaz, Jon T Asmussen, Mie K Nielsen, Anders Thomassen, Janus M Christiansen, Nina Nguyen, Oke Gerke, Abass Alavi, Poul Flemming Høilund-Carlsen, Christian Godballe
Purpose: To determine the detection rate of distant metastasis and synchronous cancer comparing clinically used imaging strategies based on a) chest X-ray + head and neck magnetic resonance imaging (CXR/MRI) and b) chest computed tomography + head and neck MRI (CHCT/MRI) to c) (18)F-fluoro-deoxy-glucose-positron emission tomography/computed tomography (PET/CT) upfront in the diagnostic work-up of patients with oral, pharyngeal, or laryngeal cancer. Methods: A prospective cohort study based on paired data. Consecutive patients with histologically verified primary head and squamous cell carcinoma (HNSCC) at Odense University Hospital from September 2013 to March 2016 were offered participation...
June 1, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28572262/pediatric-cancer-predisposition-imaging-focus-on-whole-body-mri
#18
REVIEW
Mary-Louise C Greer, Stephan D Voss, Lisa J States
The American Association for Cancer Research convened a meeting of international pediatric oncologists, geneticists, genetic counselors, and radiologists expert in childhood cancer predisposition syndromes (CPS) in October 2016 to propose consensus surveillance guidelines. Imaging plays a central role in surveillance for most, though not all, syndromes discussed. While encompassing the full gamut of modalities, there is increasing emphasis on use of nonionizing radiation imaging options such as magnetic resonance imaging (MRI) in children and adolescents, especially in the pediatric CPS population...
June 1, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28567429/are-the-current-little-league-pitching-guidelines-adequate-a-single-season-prospective-mri-study
#19
Andrew V Pytiak, Phillip Stearns, Tracey P Bastrom, Jerry Dwek, Peter Kruk, Joanna H Roocroft, Andrew T Pennock
BACKGROUND: Little League throwing guidelines have recently been implemented in an attempt to lessen the growing number of elbow injuries occurring in youth baseball players. HYPOTHESIS/PURPOSE: The purpose of this study was to examine pre- and postseason changes seen on magnetic resonance imaging (MRI) in youth baseball players' elbows in an attempt to identify risk factors for pain and MRI abnormalities, with a particular focus on the current Little League guidelines...
May 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28555500/updates-on-the-diagnosis-and-treatment-of-prostate-cancer
#20
Anne Gasnier, Nassim Parvizi
Prostate cancer is the second most prevalent cancer in men worldwide and the commonest cancer in men in the United Kingdom. The recent updates on the diagnosis and treatment of prostate cancer were discussed at a multidisciplinary day event organised by the British Institute of Radiology and held in London in November 2016. This day covered the use of the Prostate Specific Antigen (PSA) biomarker and of advanced imaging techniques such as Multi-parametric and whole body MRI, choline-PET/CT and gallium-labelled prostate specific membrane antigen for the detection of prostate cancer...
May 30, 2017: British Journal of Radiology
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