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https://www.readbyqxmd.com/read/28726074/error-performances-of-a-model-based-biplane-fluoroscopic-system-for-tracking-knee-prosthesis-during-treadmill-gait-task
#1
Arnaud Barré, Kamiar Aminian
Roentgen stereophotogrammetry analysis technique allows an accurate measurement of knee joint prosthesis position and orientation using two X-ray images. Although this technique is used generally during static procedure, it is possible to use it with a biplane fluoroscopic system to measure the prosthesis kinematics during functional tasks (e.g., gait, squat, jump) performed in a laboratory environment. However, the performance of the system in terms of errors for the measurements and the model-based matching algorithm are not well known for dynamic tasks such as walking...
July 18, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/28692625/a-new-craniothoracic-mattress-for-immobilization-of-the-cervical-spine-in-critical-care-patients
#2
Micha Holla, Mitchel Driessen, Thomas G E Eggen, Robin A Daanen, Allard J F Hosman, Nico Verdonschot, Gerjon Hannink
Current immobilization techniques of the cervical spine are associated with complications including pressure ulcers, discomfort, and elevated intracranial pressures with limited access to the thorax and airway. In this study, a newly developed craniothoracic immobilizer (Pharaoh mattress) for critical care patients with cervical injury was tested for its restriction of cervical movement, peak interface pressures, comfort, and radiolucency, and compared with headblocks strapped to a spineboard. Cervical movement was measured by roentgen stereophotogrammetric analysis in 5 fresh frozen cadavers...
July 2017: Journal of Trauma Nursing: the Official Journal of the Society of Trauma Nurses
https://www.readbyqxmd.com/read/28657561/total-knee-replacement-intraoperative-and-postoperative-kinematic-assessment
#3
M Bontempi, U Cardinale, L Bragonzoni, L Macchiarola, A Grassi, C Signorelli, G M Marcheggiani Muccioli, Stefano Zaffagnini
BACKGROUND AND AIM: The main goals of the total knee arthroplasty (TKA) is to reduce the perceived pain and  restore knee mobility and function in case of osteoarthritic knees joints. Literature shows how the three major causes of TKA failures are related to wear, loosening and instability and this is due to a problem of imbalance and malalignment. Intraoperative and postoperative kinematics analysis could be of benefit for improving surgery outcome. The aim of the present paper is to give an overview of the two set-up with the highest accuracy for intraoperative and postoperative TKA kinematics evaluation, currently in use at Istituto Ortopedico Rizzoli...
June 7, 2017: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/28639920/burnout-prevalence-and-associated-factors-among-radiology-residents-in-new-england-with-comparison-against-united-states-resident-physicians-in-other-specialties
#4
Jeffrey P Guenette, Stacy E Smith
OBJECTIVE: The objective of our study was to establish burnout prevalence, associated demographic and program-related factors, and degree of burnout in New England radiology residents relative to residents in other specialties. MATERIALS AND METHODS: A 31-item survey, including nine demographic and program-related questions and the 22-item Maslach Burnout Inventory-Health Services Survey, was sent to all resident members of the New England Roentgen Ray Society (20 programs, 472 residents)...
July 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28497067/the-influence-of-tribological-pairings-and-other-factors-on-migration-patterns-of-short-stems-in-total-hip-arthroplasty
#5
Thilo Floerkemeier, Michael Schwarze, Christof Hurschler, Jens Gronewold, Henning Windhagen, Gabriela von Lewinski, Stefan Budde
Over the last decade, the number of short stem total hip arthroplasty procedures has increased. Along with the possible benefits associated with short stems is a smaller implant-bone contact surface, which may have a negative influence on primary stability and impair osseointegration. Previous studies observed migration of short stems, especially within the first three months. The variables that influence migration in short stem hip implants remain unknown. Therefore, the purpose of this study was to associate the migration of short stems with its possible influencing variables...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28495213/breast-density-legislation-in-new-england-a-survey-study-of-practicing-radiologists
#6
Ana P Lourenco, Roberta M DiFlorio-Alexander, Priscilla J Slanetz
RATIONALE AND OBJECTIVES: This study aimed to assess radiologists' knowledge about breast density legislation as well as perceived practice changes resulting from the enactment of breast density legislation. MATERIALS AND METHODS: This is an institutional review board-exempt anonymous email survey of 523 members of the New England Roentgen Ray Society. In addition to radiologist demographics, survey questions addressed radiologist knowledge of breast density legislation, knowledge of breast density as a risk factor for breast cancer, recommendations for supplemental screening, and perceived practice changes resulting from density notification legislation...
May 8, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28471303/bone-marrow-derived-mesenchymal-stem-cells-as-autologous-therapy-in-dogs-with-naturally-occurring-intervertebral-disc-disease-feasibility-safety-and-preliminary-results
#7
Frank Steffen, Lucas Smolders, Anne Roentgen, Alessandro Bertolo, Jivko Stoyanov
The intradiscal application of mesenchymal stem cells (MSC) is considered a promising strategy for intervertebral disc (IVD) regeneration. Although many studies have been published, the feasibility and regenerative effects of intradiscal MSC application has not been evaluated in an animal model suffering from naturally occurring degenerative disc disease. Six German Shepherd Dogs suffering from naturally occurring degenerative IVD disease were included. Autologous MSC were isolated from bone marrow (iliac crest) and cultured for 3 weeks...
May 4, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28396224/-%C3%A3-tienne-destot-1864-1918-or-the-other-father-of-french-radiology
#8
N Foray, M Amiel, R Mornex
Étienne Destot is a French physician from Burgundy who benefited, during his studies in Lyon, from the quality of teaching of the best specialists of the time: Augagneur for hygiene, Testut for anatomy, Ollier for surgery, Lépine for the medical applications of electricity and the Lumière brothers for the technological development. During its experiments, he met Despeignes, the first radiation oncologist, Regaud pioneer of radiobiology and Bouchacourt who pointed out individual radiosensitivity. Less than two months after the X-rays discovery by Roentgen, he produced one of the first French radiographic views that were at the origin of our current knowledge in bone and cartilage anatomy and traumatology...
April 2017: Cancer Radiothérapie: Journal de la Société Française de Radiothérapie Oncologique
https://www.readbyqxmd.com/read/28247661/-internal-drainage-in-cancer-patients-optimizing-treatment-of-stent-related-symptoms
#9
A G Martov, D V Ergakov, A B Novikov, N G Muzhetskaya, G L Esen'yan
INTRODUCTION: The so-called stent-related symptoms caused mainly by detrusor overactivity due to distal ("cystic") curl of the internal stent are common among patients with this type of drainage. The need for long-term stenting makes the quality of life of cancer patients one of the challenging problems of modern urology. The aim of this study was to optimize treatment of stent-related symptoms in cancer patients with internal long-term stents by complementing the treatment regimen with m-anticholinergic solifenacin...
April 2016: Urologii︠a︡
https://www.readbyqxmd.com/read/28243371/prevalence-of-diffuse-idiopathic-skeletal-hyperostosis-in-patients-with-spinal-disorders
#10
Hiromitsu Toyoda, Hidetomi Terai, Kentaro Yamada, Akinobu Suzuki, Sho Dohzono, Tomiya Matsumoto, Hiroaki Nakamura
STUDY DESIGN: Retrospective cohort study. PURPOSE: The purpose of this study was to evaluate the prevalence of diffuse idiopathic skeletal hyperostosis (DISH) in patients with spinal diseases determined by roentgen images of the whole spine. OVERVIEW OF LITERATURE: Although several studies have investigated the prevalence of DISH in healthy subjects, no detailed data have been reported on the prevalence of DISH in patients with degenerative spinal disorders...
February 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/28203586/comparison-of-kinematics-and-tibiofemoral-contact-pressures-for-native-and-transplanted-lateral-menisci
#11
Patrick C McCulloch, Donald Dolce, Hugh L Jones, Andrea Gale, Michael G Hogen, Jason Alder, Jeremiah E Palmer, Philip C Noble
BACKGROUND: Lateral meniscus transplantation is a proven treatment option for the meniscus-deficient knee, yet little is known about meniscal kinematics, strain, and tibiofemoral contact pressure changes after transplantation or the effect of altered root position in lateral meniscus transplantation. PURPOSE: To compare the native lateral meniscal kinematics, strain, and tibiofemoral contact pressures to a best-case scenario meniscus transplant with perfectly matched size and position and to determine how sensitive these factors are to subtle changes in shape and position by using a nonanatomic meniscus transplant position...
December 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28201839/mr-imaging-in-patients-with-cardiac-pacemakers-and-implantable-cardioverter-defibrillators
#12
Torsten Sommer, Wolfgang Bauer, Katharina Fischbach, Christof Kolb, Roger Luechinger, Uwe Wiegand, Joachim Lotz, Ingo Eitel, Matthias Gutberlet, Holger Thiele, Hans H Schild, Malte Kelm, Harald H Quick, Jeanette Schulz-Menger, Jörg Barkhausen, Dietmar Bänsch
This joint consensus paper of the German Roentgen Society and the German Cardiac Society provides physical and electrophysiological background information and specific recommendations for the procedural management of patients with cardiac pacemakers (PM) and implantable cardioverter defibrillators (ICD) undergoing magnetic resonance (MR) imaging. The paper outlines the responsibilities of radiologists and cardiologists regarding patient education, indications, and monitoring with modification of MR sequences and PM/ICD reprogramming strategies being discussed in particular...
March 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28196331/trichobezoars-in-the-stomach-and-their-demonstration-by-roentgen-examination
#13
C M Rovsing
No abstract text is available yet for this article.
December 2016: Acta Radiologica
https://www.readbyqxmd.com/read/28154993/outcome-of-extensive-varus-and-valgus-stem-alignment-in-short-stem-tha-clinical-and-radiological-analysis-using-ebra-fca
#14
Karl Philipp Kutzner, Tobias Freitag, Stefanie Donner, Mark Predrag Kovacevic, Ralf Bieger
INTRODUCTION: The principle of implanting a calcar-guided short stem consists of an individual alignment alongside the medial calcar providing the ability of reconstructing varus and valgus anatomy in a great variety. However, still, there are broad concerns about the safety of extensive varus and valgus positioning in regard to stability, bony alterations, and periprosthetic fractures. MATERIALS AND METHODS: 216 total hip arthroplasties using a calcar-guided short stem (optimys, Mathys Ltd...
March 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28048283/we-h-204-03-part-2-history-and-archives-resources-at-aip-for-aapm-and-its-members
#15
M Mueller
"William D. Coolidge, Inventor of the Modern X-ray Tube" David J. Allard, M.S., CHP - Director, PA DEP Bureau of Radiation Protection William David Coolidge 1873-1975 was a research scientist and inventor of the modern X-ray tube. Besides Roentgen, with his 1895 discovery and subsequent studies of X-rays, perhaps no other individual contributed more to the advancement of X-ray technology than did Coolidge. He was born in Hudson, MA and received his Bachelor of Science degree from MIT in 1896. That same year he went to Europe to study under renowned physicists of the time...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047523/we-h-204-00-history-committee-symposium
#16
Michael Gossman
"William D. Coolidge, Inventor of the Modern X-ray Tube" David J. Allard, M.S., CHP - Director, PA DEP Bureau of Radiation Protection William David Coolidge 1873-1975 was a research scientist and inventor of the modern X-ray tube. Besides Roentgen, with his 1895 discovery and subsequent studies of X-rays, perhaps no other individual contributed more to the advancement of X-ray technology than did Coolidge. He was born in Hudson, MA and received his Bachelor of Science degree from MIT in 1896. That same year he went to Europe to study under renowned physicists of the time...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046866/we-h-204-01-william-d-coolidge-inventor-of-the-modern-x-ray-tube
#17
D Allard
"William D. Coolidge, Inventor of the Modern X-ray Tube" David J. Allard, M.S., CHP - Director, PA DEP Bureau of Radiation Protection William David Coolidge 1873-1975 was a research scientist and inventor of the modern X-ray tube. Besides Roentgen, with his 1895 discovery and subsequent studies of X-rays, perhaps no other individual contributed more to the advancement of X-ray technology than did Coolidge. He was born in Hudson, MA and received his Bachelor of Science degree from MIT in 1896. That same year he went to Europe to study under renowned physicists of the time...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046206/we-h-204-02-part-1-history-and-archives-resources-at-aip-for-aapm-and-its-members
#18
G Good
"William D. Coolidge, Inventor of the Modern X-ray Tube" David J. Allard, M.S., CHP - Director, PA DEP Bureau of Radiation Protection William David Coolidge 1873-1975 was a research scientist and inventor of the modern X-ray tube. Besides Roentgen, with his 1895 discovery and subsequent studies of X-rays, perhaps no other individual contributed more to the advancement of X-ray technology than did Coolidge. He was born in Hudson, MA and received his Bachelor of Science degree from MIT in 1896. That same year he went to Europe to study under renowned physicists of the time...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28027161/fortieth-lauriston-s-taylor-lecture-radiation-protection-and-regulatory-science
#19
John W Poston
It took about 30 y after Wilhelm Konrad Roentgen's discovery of x rays and Henri Becquerel's discovery of natural radioactivity for scientists in the civilized world to formulate recommendations on exposure to ionizing radiation. We know of these efforts today because the organizations that resulted from the concerns raised in 1928 at the Second International Congress of Radiology still play a role in radiation protection. The organizations are known today as the International Commission on Radiological Protection and, in the United States, the National Council on Radiation Protection and Measurements (NCRP)...
February 2017: Health Physics
https://www.readbyqxmd.com/read/28002857/mri-of-the-prostate-recommendations-on-patient-preparation-and-scanning-protocol
#20
REVIEW
Tobias Franiel, Michael Quentin, Ullrich Gerd Mueller-Lisse, Lars Schimmoeller, Patrick Asbach, Stefan Rödel, Winfried Willinek, Katja Hueper, Dirk Beyersdorff, Matthias Röthke
The Working Group Uroradiology and Urogenital Diagnosis of the German Roentgen Society has developed uniform recommendations for the preparation and implementation of prostate MRI. In the first part detailed recommendations are given in tabular form regarding 1. anamnestic data before prostate MRI, 2. termination of examinations and preparation of examinations, 3. examination protocol and 4. MRI-guided in-bore biopsy. In the second part, the recommendations are discussed in detail and relevant background information is provided...
January 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
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