keyword
MENU ▼
Read by QxMD icon Read
search

Video fluoroscopy

keyword
https://www.readbyqxmd.com/read/28809633/the-potential-of-the-icuc%C3%A2-documentation-concept-to-improve-trauma-surgery
#1
P Regazzoni, A A Fernandez Dell'oca, S M Perren
Conventional documentation of surgical procedures using only pre- and postoperative X-ray images and possibly a few intra-operative pictures does not allow secondary analysis of the technical performance in detail. In particular, the quality of the handling of tissues and surgical tools cannot be judged «post hoc», i.e. after the end of the surgical procedure. The invasiveness of the surgical act cannot yet be quantified. Surrogate invasiveness indices have therefore been developed. Furthermore, conventional documentation does not allow evaluation of the proper use of the C-arm both technically and with regard to fluoroscopy time...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28780107/validation-of-2-noninvasive-markerless-reconstruction-techniques-in-biplane-high-speed-fluoroscopy-for-3-dimensional-research-of-bovine-distal-limb-kinematics
#2
M Weiss, E Reich, S Grund, C K W Mülling, S M Geiger
Lameness severely impairs cattle's locomotion, and it is among the most important threats to animal welfare, performance, and productivity in the modern dairy industry. However, insight into the pathological alterations of claw biomechanics leading to lameness and an understanding of the biomechanics behind development of claw lesions causing lameness are limited. Biplane high-speed fluoroscopic kinematography is a new approach for the analysis of skeletal motion. Biplane high-speed videos in combination with bone scans can be used for 3-dimensional (3D) animations of bones moving in 3D space...
August 2, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28735768/cervical-flexion-and-extension-includes-anti-directional-cervical-joint-motion-in-healthy-adults
#3
Xu Wang, René Lindstroem, Maciej Plocharski, Lasse Riis Østergaaard, Thomas Graven-Nielsen
BACKGROUND CONTEXT: Anti-directional cervical joint motion has previously been demonstrated. However, quantitative studies of anti-directional and pro-directional cervical flexion and extension motions have not been published. PURPOSE: Quantitative assessment of directional and anti-directional cervical joint motion in healthy subjects. STUDY DESIGN: Observational study. PATIENTS SAMPLE: Eighteen healthy subjects. OUTCOME MEASURES: Anti-directional and pro-directional cervical flexion and extension motion from each cervical joint in degrees...
July 20, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28703332/validation-of-biplane-high-speed-fluoroscopy-combined-with-two-different-non-invasive-tracking-methodologies-for-measuring-in-vivo-distal-limb-kinematics-of-the-horse
#4
S M Geiger, E Reich, P Böttcher, S Grund, J Hagen
BACKGROUND: Biplane high-speed fluoroscopy is a new method for gait analysis of the equine distal extremity. This is the first study validating the non-invasive tracking possibilities (Autoscoping and Scientific Rotoscoping) taking equine anatomy into account. OBJECTIVES: To determine the resolution with which Autoscoping and Scientific Rotoscoping depict motion of the equine phalanges in comparison to the invasive gold standard marker-based registration. STUDY DESIGN: Comparative ex vivo study...
July 13, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28697073/percutaneous-repair-of-a-schatzker-iii-tibial-plateau-fracture-assisted-by-arthroscopy
#5
Kenneth A Egol, Matthew Cantlon, Nina Fisher, Kari Broder, Aldo Reisgo
PURPOSE: Tibial plateau fractures are articular fractures that sometimes prove difficult to effectively manage and treat. Although fluoroscopy is frequently used to assess the articular reduction in the surgical repair of tibial plateau fractures, this video demonstrates the additional benefit of arthroscopy in assisting with the articular reconstruction of a Schatzker III tibial plateau fracture. METHODS: The goal of operative treatment of tibial plateau is reconstruction of the articular surface followed by reestablishment of tibial alignment...
August 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28692969/an-mr-based-model-for-cardio-respiratory-motion-compensation-of-overlays-in-x-ray-fluoroscopy
#6
Peter Fischer, Anthony Faranesh, Thomas Pohl, Andreas Maier, Toby Rogers, Kanishka Ratnayaka, Robert Lederman, Joachim Hornegger
In X-ray fluoroscopy, static overlays are used to visualize soft tissue. We propose a system for cardiac and respiratory motion compensation of these overlays. It consists of a 3-D motion model created from real-time MR imaging. Multiple sagittal slices are acquired and retrospectively stacked to consistent 3-D volumes. Slice stacking considers cardiac information derived from the ECG and respiratory information extracted from the images. Additionally, temporal smoothness of the stacking is enhanced. Motion is estimated from the MR volumes using deformable 3-D/3-D registration...
July 4, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28680727/surgical-management-of-symptomatic-ossified-anterior-longitudinal-ligament-a-case-report
#7
Maddala Sundeep, Yoshitaka Hirano, Susumu Iketani, Akiyoshi Konno
BACKGROUND: Ossified anterior longitudinal ligament (OALL) of the cervical spine can cause dysphagia, dyspnoea, and dysphonia, although these symptoms are rare. CASE DESCRIPTION: A 71-year-old male presented with gradually progressive dysphagia secondary to OALL. He underwent fiber optic endoscopy and lateral video fluoroscopy. The OALL extended from C4 to C7 and contributed to significant compression of the pharynx as demonstrated on plain cervical radiography, magnetic resonance (MR) imaging, and computed tomography (CT)...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28649951/video-motion-analysis-in-live-coronary-angiography-differentiates-levels-of-experience-and-provides-a-novel-method-of-skill-assessment
#8
Alexander Eric Rolls, Celia Riga, Sybghat Rahim, Danail Stoyanov, Isabelle Van Herzeele, Ghada Mikhail, Mohamad Hamady, Nick Cheshire, Colin Bicknell
AIMS: Video-motion analysis (VMA) uses fluoroscopic sequences to derive on catheter and guide-wire movement, and is able to calculate 2D catheter-tip path-length (PL) on the basis of frame-by-frame pixel coordinates. The objective of this study was to validate VMA in coronary angiography as a method of skill assessment. METHODS AND RESULTS: 47 coronary interventions performed by 10 low- (<1000 cases; group A), 5 medium- (1000-4000; group B) and 6 high- (>4000; group C) experience- volume cardiologists were prospectively recorded and analysed using this software...
June 27, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28641969/determining-3d-kinematics-of-the-hip-using-video-fluoroscopy-guidelines-for-balancing-radiation-dose-and-registration-accuracy
#9
Fabio D'Isidoro, Patrik Eschle, Thomas Zumbrunn, Christian Sommer, Stephan Scheidegger, Stephen J Ferguson
BACKGROUND: Video fluoroscopy is a technique currently used to retrieve the in vivo three-dimensional kinematics of human joints during activities of daily living. Minimization of the radiation dose absorbed by the subject during the measurement is a priority and has not been thoroughly addressed so far. This issue is critical for the motion analysis of the hip joint, because of the proximity of the gonads. The aims of this study were to determine the x-ray voltage and the irradiation angle that minimize the effective dose and to achieve the best compromise between delivered dose and accuracy in motion retrieval...
May 25, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28606890/how-to-plan-an-overlap-free-projection-on-cta-or-fluoroscopy-to-facilitate-quantitative-analysis
#10
Justin Teng, Vincent Nijenhuis, Martin Swaans, Gerald Yong, Carl Schultz
AIMS: Assessment of para-valvular aortic regurgitation remains challenging. Quantitative video-densitometry is an effective technique however overlap of the aorta and left ventricle (LV) limits feasibility. We aimed to develop and validate a method to determine an 'Overlap Free Projection' (OFP). METHODS AND RESULTS: 65 computed tomography scans of patients referred for transcatheter aortic valve implantation were analysed using 3D reconstruction to evaluate the OFP...
June 13, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28580260/posterolateral-rotatory-instability-of-the-elbow-part-ii-supplementary-examination-and-dynamic-imaging-techniques
#11
Christopher L Camp, Jay Smith, Shawn W O'Driscoll
Currently, a number of examination and imaging techniques exist for diagnosing posterolateral rotatory instability of the elbow. Although the posterolateral rotatory drawer is the primary examination maneuver, other special tests include the lateral pivot-shift test, prone push-up test, chair push-up test, and tabletop push-up test. In addition, posterolateral rotatory instability can be evaluated using radiography, magnetic resonance imaging, dynamic fluoroscopy, or dynamic ultrasound. In this Technical Note, each of these tests is described in detail...
April 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28495056/a-novel-minimally-invasive-near-infrared-thoracoscopic-localization-technique-of-small-pulmonary-nodules-a-phase-i-feasibility-trial
#12
Hideki Ujiie, Tatsuya Kato, Hsin-Pei Hu, Priya Patel, Hironobu Wada, Kosuke Fujino, Robert Weersink, Elsie Nguyen, Marcelo Cypel, Andrew Pierre, Marc de Perrot, Gail Darling, Thomas K Waddell, Shaf Keshavjee, Kazuhiro Yasufuku
OBJECTIVES: Localization and resection of nonvisible, nonpalpable pulmonary nodules during video-assisted thoracoscopic surgery are challenging. Our study was to determine the feasibility and safety of indocyanine green fluorescence localization and resection of small nodules using a near-infrared fluorescence thoracoscope. METHODS: Twenty patients with undiagnosed peripheral nodules smaller than 3 cm scheduled for computed tomography-guided microcoil placement followed by video-assisted thoracoscopic surgery wedge resection were enrolled...
August 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28437028/european-section-of-urotechnology-educational-video-on-fluoroscopic-guided-puncture-in-percutaneous-nephrolithotomy-all-techniques-step-by-step
#13
Iason Kyriazis, Evangelos Liatsikos, Odysseas Sopilidis, Panagiotis Kallidonis, Andreas Skolarikos
OBJECTIVE: To describe the most common fluoroscopic-guided access techniques during percutaneous nephrolithotomy (PCNL) in a step-by-step manner and to assist in the standardisation of their technique and terminology. METHODS: A high-quality animation video was created for each of the respective fluoroscopic techniques, focusing into the parallel projection of external surgical manoeuvres and their effect in the three-dimensional space of the kidney. RESULTS: Four predominant fluoroscopic-guided percutaneous access techniques are available, each with different advantages and limitations...
April 24, 2017: BJU International
https://www.readbyqxmd.com/read/28382486/-guideline-conform-diagnostics-for-dysphagia-a%C3%A2-representative-survey-of-speech-therapists-at-certified-stroke-units-in-germany
#14
C M Flader, C Rosendahl, T Günther
BACKGROUND: Almost 260,000 people in Germany suffer from a stroke each year. As a consequence, for more than 60% this leads to dysphagia. In order to prevent secondary diseases, such as pneumonia, malnutrition and dehydration, a differentiated diagnosis by a multiprofessional team in a stroke unit is required. The guidelines in 2015 for diagnosing neurologic dysphagia by the German Society of Neurology recommend a detailed anamnesis, a standardized screening, a clinical swallowing examination and additional instrumental diagnostics...
April 5, 2017: Der Nervenarzt
https://www.readbyqxmd.com/read/28344982/transbronchial-cryobiopsy-in-interstitial-lung-disease-experience-in-106-cases-how-to-do-it
#15
Antonio Bango-Álvarez, Miguel Ariza-Prota, Hector Torres-Rivas, Luis Fernández-Fernández, Amador Prieto, Inmaculada Sánchez, Maria Gil, Ana Pando-Sandoval
Transbronchial biopsy using forceps (TBB) is the first diagnostic technique performed on patients with interstitial lung disease (ILD). However, the small size of the samples and the presence of artefacts in the tissue obtained make the yield variable. Our objectives were 1) to attempt to reproduce transbronchial cryobiopsy under the same conditions with which we performed conventional TBB, that is, in the bronchoscopy unit without intubating the patient and without fluoroscopy or general anaesthesia; 2) to describe the method used for its execution; and 3) to analyse the diagnostic yield and its complications...
January 2017: ERJ Open Research
https://www.readbyqxmd.com/read/28288610/cervical-spine-reposition-errors-after-cervical-flexion-and-extension
#16
Xu Wang, René Lindstroem, Niels Peter Bak Carstens, Thomas Graven-Nielsen
BACKGROUND: Upright head and neck position has been frequently applied as baseline for diagnosis of neck problems. However, the variance of the position after cervical motions has never been demonstrated. Thus, it is unclear if the baseline position varies evenly across the cervical joints. The purpose was to assess reposition errors of upright cervical spine. METHODS: Cervical reposition errors were measured in twenty healthy subjects (6 females) using video-fluoroscopy...
March 13, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28268924/modeling-of-pharyngoesophageal-segment-during-tracheoesophageal-phonation-in-total-laryngectomy-patients-with-preliminary-validation
#17
Teng Zhang, Siwei Bai, Ian Cook, Michal Szczesniak, Julia Maclean, Socrates Dokos
For patients with large or recurrent laryngeal cancer, total laryngectomy surgery is usually performed. In the absence of a larynx, tracheoesophageal (TE) voice is the gold standard for alaryngeal phonation. The mechanisms underlying TE voice are unknown, but pharyngoesophageal (PE) segment vibration has been shown to play a key role. The aim of this study was to systematically explore the mechanics of PE segment vibration during TE phonation. A 2D axisymmetric finite-element model with two domains representing the air and PE wall was developed...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227129/modeling-of-pharyngoesophageal-segment-during-tracheoesophageal-phonation-in-total-laryngectomy-patients-with-preliminary-validation
#18
Teng Zhang, Siwei Bai, Ian Cook, Michal Szczesniak, Julia Maclean, Socrates Dokos, Teng Zhang, Siwei Bai, Ian Cook, Michal Szczesniak, Julia Maclean, Socrates Dokos, Siwei Bai, Michal Szczesniak, Socrates Dokos, Ian Cook, Julia Maclean, Teng Zhang
For patients with large or recurrent laryngeal cancer, total laryngectomy surgery is usually performed. In the absence of a larynx, tracheoesophageal (TE) voice is the gold standard for alaryngeal phonation. The mechanisms underlying TE voice are unknown, but pharyngoesophageal (PE) segment vibration has been shown to play a key role. The aim of this study was to systematically explore the mechanics of PE segment vibration during TE phonation. A 2D axisymmetric finite-element model with two domains representing the air and PE wall was developed...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28131426/preoperative-localization-of-lung-nodules-with-fiducial-markers-feasibility-and-technical-considerations
#19
Amita Sharma, Shaunagh McDermott, Douglas J Mathisen, Jo-Anne O Shepard
BACKGROUND: The purpose of this study was to determine whether computed tomography-guided fiducial placement is a feasible and safe localization procedure to aid resection of small pulmonary nodules. METHODS: A retrospective review was performed of 20 nodules (mean size 11 mm; range, 6 to 19 mm) referred for preoperative computed tomography-guided fiducial placement in 19 patients (average age 64 ± 11 years; 13 women and 6 men). RESULTS: The technical success rate for the placement of fiducials was 95%, with deployment of fiducials into the pleural space in 1 case...
April 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28100474/regional-diaphragm-volume-displacement-is-heterogeneous-in-dogs
#20
Brooke Greybeck, Raymond Lu, Arvind Ramanujam, Mary Adeyeye, Matthew Wettergreen, Shari Wynd, Aladin M Boriek
Muscle shortening and volume displacement (VD) are critical determinants of the pressure-generating capacity of the diaphragm. The present study was designed to test the hypothesis that diaphragm VD is heterogeneous and that distribution of VD is dependent on regional muscle shortening, posture, and the level of muscle activation. Radioopaque markers were sutured along muscle bundles of the peritoneal surface of the crural, dorsal costal, midcostal, and ventral costal regions of the left hemidiaphragm in four dogs...
March 1, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
keyword
keyword
15806
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"