Having an Aortic Arch-Angiogram
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Endarterectomy Versus Stenting for Stroke Prevention
Open Access Review Stroke Vasc Neurol: first published as 10.1136/svn-2018-000146 on 24 February 2018. Downloaded from Endarterectomy versus stenting for stroke prevention A Ross Naylor To cite: Naylor AR. ABSTRACT stenosis,1 2 using the NASCET method for Endarterectomy versus stenting The European Society for Vascular Surgery (ESVS) has measuring carotid stenosis severity.2 Subgroup for stroke prevention. Stroke recently prepared updated guidelines for the management analyses suggested that it was possible to iden- and Vascular Neurology 2018;0: of patients with symptomatic and asymptomatic e000146. doi:10.1136/svn- tify certain imaging/clinical features that atherosclerotic carotid artery disease, with specific 2018-000146 were associated with a higher risk of stroke on reference to the roles of best medical therapy, carotid BMT.3 Clinical features of increased benefit endarterectomy (CEA) and carotid artery stenting (CAS). In conferred by CEA include: increasing age Received 15 January 2018 symptomatic patients, there is a drive towards performing Accepted 4 February 2018 carotid interventions as soon as possible after onset of (especially patients aged >75 years), recency symptoms. This is because it is now recognised that the of symptoms, male sex, hemispheric versus highest risk period for recurrent stroke is the first 7–14 ocular symptoms, cortical versus lacunar 3 days after onset of symptoms. The guidelines advise that stroke and increasing medical comorbidities. there is a role for both CEA and CAS, but the levels of Imaging -
Diagnostic Radiography Is the Production of High Quality Images for the Purpose of Diagnosis of Injury Or Disease
A Career in Medical Imaging What is Diagnostic Radiography / Medical Imaging? Diagnostic Radiography is the production of high quality images for the purpose of diagnosis of injury or disease. It is a pivotal aspect of medicine and a patient's diagnosis and ultimate treatment is often dependent on the images produced. Diagnostic Radiography uses both ionising and non-ionising radiation in the imaging process. The equipment used is at the high end of technology and computerisation within medicine. What does a Diagnostic Radiographer / Medical Imaging Technologist do? A Diagnostic Radiographer/Medical Imaging Technologist is a key member of the health care team. They are responsible for producing high quality medical images that assist medical specialists and practitioners to describe, diagnose, monitor and treat a patient’s injury or illness. Much of the medical equipment used to gain the images is highly technical and involves state of the art computerisation. A Diagnostic Radiographer/Medical Imaging Technologist needs to have the scientific and technological background to understand and use the equipment within a modern Radiology department as well as compassion and strong interpersonal skills. They need to be able to demonstrate care and understanding and have a genuine interest in a patient's welfare. The Diagnostic Radiographer/Medical Imaging Technologist will also need to be able to explain to the patient the need for the preparation and post examination care as well as the procedure to be undertaken. The Diagnostic Radiographer/Medical Imaging Technologist is able to work in a highly advanced technical profession that requires excellent people skills. It is an exciting and rewarding profession to embark on and great opportunities await the graduate. -
The Role of the GI Radiographer: a UK Perspective Nightingale, J and Hogg, P
The role of the GI radiographer: A UK perspective Nightingale, J and Hogg, P Title The role of the GI radiographer: A UK perspective Authors Nightingale, J and Hogg, P Type Article URL This version is available at: http://usir.salford.ac.uk/id/eprint/12543/ Published Date 2007 USIR is a digital collection of the research output of the University of Salford. Where copyright permits, full text material held in the repository is made freely available online and can be read, downloaded and copied for non-commercial private study or research purposes. Please check the manuscript for any further copyright restrictions. For more information, including our policy and submission procedure, please contact the Repository Team at: [email protected]. ...................................................................................................... PEER REVIEW The Role of the GI Radiographer: A United Kingdom Perspective JULIE NIGHTINGALE, M.Sc. PETER HOGG, M.Phil. Context Since the 1990s radiographers in the United Kingdom have expanded their role in gastrointestinal (GI) radiology, first by performing double-contrast barium enema (DCBE) examinations independently and later by interpreting and reporting the results of these exams. Objective This article will trace the evolution of GI radiographers in the United Kingdom, evaluate their success and explore how the U.K. experience could apply to American radiologist assistants. Methods The authors surveyed the professional literature to determine the historical context in which GI radiographers emerged and assess how their performance on DCBE exams compares with radiologists’ performance. Results DCBE exams performed by GI radiographers have been shown to be efficient, cost effective and safe. In addition, GI radiographers have helped reduce waiting and turnaround times for DCBE exams. -
Mammography Services Quality Assurance: Baseline Standards for Latin America and the Caribbean
MAMMOGRAPHY SERVICES QUALITY ASSURANCE: BASELINE STANDARDS FOR LATIN AMERICA AND THE CARIBBEAN MAMMOGRAPHY SERVICES QUALITY ASSURANCE: BASELINE STANDARDS FOR LATIN AMERICA AND THE CARIBBEAN Washington, D.C., 2016 Original versión in Spanish: Garantía de calidad de los servicios de mamografía; Normas básicas para América Latina y el Caribe ISBN: 978-92-75-31926-0 PAHO HQ Library Cataloguing-in-Publication Data ********************************************************************************* Pan American Health Organization Mammography Services Quality Assurance: Baseline Standards for Latin America and the Caribbean. Washington, D.C. : PAHO, 2016. 1. Mammography – standards. 2. Mammography – methods. 3. Human Resources. 4. Equipment and Supplies. 5. Health Care Quality, Access, and Evaluation. 6. Americas. I. Title. ISBN: 978-92-75-11926-6 (NLM Classification: WP 815) © Pan American Health Organization, 2016 All rights reserved. Publications of the Pan American Health Organization (PAHO) are available on the PAHO website (www.paho.org). Requests for permission to reproduce or translate PAHO publications should be addressed to the Publications Program through the PAHO website (www.paho.org/permissions). Publications of the Pan American Health Organization enjoy copyright protection in accordance with the provisions of Protocol 2 of the Universal Copyright Convention. All rights are reserved. The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever on the part of the Secretariat of the Pan American Health Organization concerning the status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. Dotted and dashed lines on maps represent approximate border lines for which there may not yet be full agreement. -
Your Computed Tomography (Ct) Examination
YOUR COMPUTED TOMOGRAPHY (CT) EXAMINATION DIRECTORATE OF MEDICAL IMAGING INFORMATION FOR PATIENTS The Radiology Department The Radiology Department, X-ray or Imaging Department, is the facility in the hospital which carries out the radiological examination of patients, using a range of X-ray equipment, together with computed tomography (CT scan) as well as ultrasound and magnetic resonance imaging (MRI). The radiologists are doctors specially trained to interpret the results and carry out some of the more complex examinations. They are supported by radiographers who are highly trained to carry out many of the X-ray and other imaging procedures. What is a CT scan? A CT (Computed Tomography) scanner is a special X-ray machine which produces an image of a cross-section, or slice, of the body. The scanner consists of a ‘doughnut’ shaped structure, or gantry, about two feet thick, through which you pass on a couch. A narrow fan-shaped beam of X-rays is produced from inside the gantry, and rotates in a complete circle around you. The X-rays pass through your body and are detected by electronic sensors on the other side of the gantry. The information passes to a computer which then produces a picture of the internal structure of the body. The pictures are displayed on a TV screen and can be examined by the radiologist. It takes less than a second to produce each slice, which can vary in thickness from one millimetre to one centimetre. Depending on how much of the body is being scanned, it will be necessary to produce images of up to 30 or 40 slices, or even much higher numbers with some scanners. -
Carotid Artery Stenting Initial Public Comments CAG-00085R June 18-July 18, 2004
Carotid Artery Stenting Initial Public Comments CAG-00085R June 18-July 18, 2004 Comment #1: Submitter: Peter Fail Organization: Cardiovascular Institute of the South Date: June 28, 2004 Comment: As an investigator of cartoid stenting in high risk patients, I feel that coverage of these patients will become a necesseity. The high risk patients not only has Carotid disease but usually a whole host of other vascular co- morbidiities that makes a surgical option "high risk". There are also those patients that the surgical option is non-existant due to anatomy weather a high or low lesions or because of prior radiation or surgery, etc. The proper training will difficult to access. Even those physicians in trial some of them have low numbers. (It is assumed that their numbers to get in to the trial was adequate). I am not sure what should be considered as an "adequate" number to be considered "trained". As the trials evolved the advent of embolic protection made the procedure "safer". There have been a number of times that I found debris in a filter and was thankful for it. The clinical event may not be that different with or without filters how ever I would argue that any debris in the brain is bad. It may not result in a clinically evident stroke, only a memory of a friend or something else that "can't" be tested for. I feel that using the current critera that were put forth as "high risk" by both SAPPHIRE and ARCHER some be atleast the baseline that can be used as a CAS requirement for "coverage". -
Investigating Signal Loss Due to a Carotid Artery Stent in 3D-TOF-MRA
Magn Reson Med Sci 2020; XX; XXX–XXX doi:10.2463/mrms.mp.2019-0083 Published Online: September 18, 2020 MAJOR PAPER Investigating Signal Loss due to a Carotid Artery Stent in 3D-TOF-MRA Hiroshi Kato*, Norio Ootani, Kentaro Abiru, and Mika Okahara Purpose: In this study, we investigated the factors of signal loss out because of the presence of a stent and optimized imaging parameters for improvement in depiction ability. Methods: We investigated the relationship between the stent type and magnetic susceptibility effect by mea- suring the signal value between the inside and outside of the stent with different Bw and TE for two different kinds of stents respectively. Similarly, flip angles were changed for two different kinds of stents respectively to the signal intensity between the inside and the outside of the stent was measured, in which examine the relationship between the stent type and the Ernst angles in RF-shielding effect. The conventional imaging parameters and the optimum imaging parameters for each stent obtained from the result of the phantom experiment were examined. Optimized 3D time-of-flight MR angiography (3D-TOF-MRA) was performed and compared with conventional 3D-TOF-MRA and computed tomography angiography (CTA). Results: The influence of the magnetic susceptibility effect is small in the central part of Carotid Wallstent and in PRECISE, and large in the Carotid Wallstent at the both ends. The influence of RF-shielding effect was large at PRECISE, where the Ernst angle was greatly shifted while the effect is no longer influenced at Carotid Wallstent. Both Carotid Wallstent and PRECISE made imaging capability improved by optimizing the imaging parameters. -
Detecting the Pulmonary Trunk in CT Scout Views Using Deep Learning Aydin Demircioğlu 1,3*, Magdalena Charis Stein2,3, Moon‑Sung Kim1, Henrike Geske1, Anton S
www.nature.com/scientificreports OPEN Detecting the pulmonary trunk in CT scout views using deep learning Aydin Demircioğlu 1,3*, Magdalena Charis Stein2,3, Moon‑Sung Kim1, Henrike Geske1, Anton S. Quinsten1, Sebastian Blex1, Lale Umutlu1 & Kai Nassenstein1 For CT pulmonary angiograms, a scout view obtained in anterior–posterior projection is usually used for planning. For bolus tracking the radiographer manually locates a position in the CT scout view where the pulmonary trunk will be visible in an axial CT pre‑scan. We automate the task of localizing the pulmonary trunk in CT scout views by deep learning methods. In 620 eligible CT scout views of 563 patients between March 2003 and February 2020 the region of the pulmonary trunk as well as an optimal slice (“reference standard”) for bolus tracking, in which the pulmonary trunk was clearly visible, was annotated and used to train a U‑Net predicting the region of the pulmonary trunk in the CT scout view. The networks’ performance was subsequently evaluated on 239 CT scout views from 213 patients and was compared with the annotations of three radiographers. The network was able to localize the region of the pulmonary trunk with high accuracy, yielding an accuracy of 97.5% of localizing a slice in the region of the pulmonary trunk on the validation cohort. On average, the selected position had a distance of 5.3 mm from the reference standard. Compared to radiographers, using a non‑inferiority test (one‑sided, paired Wilcoxon rank‑sum test) the network performed as well as each radiographer (P < 0.001 in all cases). -
Carotid Endarterectomy Compared with Angioplasty and Stenting: the Status of the Debate
Neurosurg Focus 5 (6):Article 2, 1998 Carotid endarterectomy compared with angioplasty and stenting: the status of the debate Felipe C. Albuquerque, M.D., George P. Teitelbaum, M.D., Donald W. Larsen, M.D., and Steven L. Giannotta, M.D. Department of Neurological Surgery, Los Angeles County and University of Southern California Medical Center, Los Angeles, California Endarterectomy is the treatment of choice for patients with symptomatic stenosis of the internal carotid artery. Recently, debate has arisen over the potential benefits of endovascular techniques. Although retrospective analyses of angioplasty and stenting procedures suggest comparable clinical efficacy to endarterectomy, prospective evaluation is pending. The authors review the status of the debate and discuss those issues on both sides that are particularly contentious and clinically relevant. Key Words * carotid endarterectomy * angioplasty * stenting Atherosclerotic disease of the common carotid artery bifurcation is associated with 20 to 30% of cerebrovascular accidents.[13,15,27] Stroke is the third leading cause of death in the United States and the most common and disabling neurological disorder among the elderly worldwide.[13,15,27] In light of these public health concerns, research in the last half of this century has been focused on the optimum treatment of carotid artery stenosis. Prospective analyses such as those performed by the North American Symptomatic Carotid Endarterectomy Trial (NASCET), the Asymptomatic Carotid Atherosclerosis Study (ACAS), and the European Carotid Surgery Trial have demonstrated superior reduction in stroke incidence among symptomatic and a select group of asymptomatic patients who undergo carotid endarterectomy (CEA).[17,18,36] In fact, these studies have established CEA as the "gold standard" for the treatment of carotid artery atherosclerosis. -
The Practice Standards for Medical Imaging and Radiation Therapy
The Practice Standards for Medical Imaging and Radiation Therapy Radiography Practice Standards ©2017 American Society of Radiologic Technologists. All rights reserved. Reprinting all or part of this document is prohibited without advance written permission of the ASRT. Send reprint requests to the ASRT Communications Department, 15000 Central Ave. SE, Albuquerque, NM 87123-3909. Effective June 25, 2017 Preface to Practice Standards A profession’s practice standards serve as a guide for appropriate practice. The practice standards define the practice and establish general criteria to determine compliance. Practice standards are authoritative statements established by the profession for evaluating the quality of practice, service and education provided by individuals who practice in medical imaging and radiation therapy. Practice Standards can be used by individual facilities to develop job descriptions and practice parameters. Those outside the imaging, therapeutic and radiation science community can use the standards as an overview of the role and responsibilities of the individual as defined by the profession. The individual must be educationally prepared and clinically competent as a prerequisite to professional practice. Federal and state laws, accreditation standards necessary to participate in government programs, and lawful institutional policies and procedures supersede these standards. Format The Practice Standards are divided into six sections: introduction, scope of practice, clinical performance, quality performance, professional performance and advisory opinion statements. Introduction. The introduction provides definitions for the practice and the minimum qualifications for the education and certification of individuals in addition to an overview of the specific practice. Scope of Practice. The scope of practice delineates the parameters of the specific practice. -
The Role of the Radiographer in Magnetic Resonance Imaging
The role of the radiographer in Magnetic Resonance Imaging Introduction Magnetic Resonance Imaging (MRI) is an ever-advancing technology. Since its The radiography workforce delivers diagnostic introduction into mainstream imaging departments in the UK in the late 1980s, the imaging and radiotherapy services in a range of health and social care settings across the growth in MRI has been rapid culminating in it becoming the preferred imaging UK. Radiographers are pivotal to delivering modality for many investigations. Advances in magnet design, Radio Frequency (RF) fast and reliable diagnoses of disease, as well technology and the increasing availability of high field strength systems means that as curative and palliative treatment and care techniques such as cardiac, functional and interventional MRI to name a few are for patients with cancer. A large majority of patients will be referred for imaging during available in many imaging departments. The scope of radiographic practice within their treatment and radiographers are key to MRI continues to broaden, with highly specialised and knowledgeable radiographers the delivery of successful clinical outcomes. providing this essential imaging service. The Society and College of Radiographers (SCoR) is a professional body and trade union. With more than 90% of the radiography workforce in membership, it represents the Clinical applications of MRI entire profession. It shapes the healthcare MRI produces extremely detailed images of soft tissue and anatomical structures agenda and leads opinion on a wide range making it ideal for imaging the brain, spine, and joints. It plays an important role of professional issues, setting standards and developing policies that are adopted in imaging patients with conditions such as stroke, epilepsy , dementia and brain and acclaimed by governments and health tumours, and the development of functional MRI which assesses brain function has professionals worldwide. -
Principles and Practice of PET/CT Part 1 a Technologist’S Guide
EANM® Eu ne rope edici an Association of Nuclear M Publications · Brochures Principles and Practice of PET/CT Part 1 A Technologist‘s Guide Produced with the kind Support of Editors Peter Hogg Giorgio Testanera Head of Diagnostic Imaging Research Istituto Clinico Humanitas University of Salford Department of Nuclear Medicine Salford, UK Rozzano, Italy Contributors Suzanne Dennan Ann Heathcote Department of Diagnostic Imaging Regional Manger St. James Hospital, Dublin, Ireland Alliance Medical Limited Warwick, UK Thomas Kane Consultant in Radiology & Nuclear Medicine Amy Wareing Victoria Hospital, Blackpool Senior PET CT Technologist and Lancashire PETCT Centre, Preston, UK Preston PET CT Centre Royal Preston Hospital Jean-Marc Vrigneaud Lancashire Teaching Hospitals, UK Medical Physicist Nuclear Medicine Department Peter Julyan Centre Georges-François Leclerc Clinical Scientist Dijon, France North Western Medical Physics The Christie NHS Foundation Trust, UK Sylvianne Prevot Radiation Safety Officer Katy Szczepura Centre Georges-Francois Leclerc Medical Physics Lecturer Dijon, France Department of Diagnostic Radiography University of Salford Angela Meadows Greater Manchester, UK Unit Manager Preston PET/CT Centre Simona Cola Alliance Medical Technologist of the Department of Nuclear Royal Preston Hospital Medicine Lancashire Teaching Hospitals NHS Trust, UK S. Maria Nuova Hospital Reggio Emilia, Italy Ronald Boellaard Associate Professor and Head of Physics Department of Nuclear Medicine and PET Research VU University Medical Centre Amsterdam,