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https://www.readbyqxmd.com/read/28100525/transoesophageal-echocardiographic-evaluation-of-central-venous-catheter-positioning-using-peres-formula-or-a-radiological-landmark-based-approach-a-prospective-randomized-single-centre-study
#1
J H Ahn, I S Kim, J H Yang, I G Lee, D H Seo, S P Kim
BACKGROUND: The lower superior vena cava (SVC), near its junction with the right atrium (RA), is considered the ideal location for the central venous catheter tip to ensure proper function and prevent injuries. We determined catheter insertion depth with a new formula using the sternoclavicular joint and the carina as radiological landmarks, with a 1.5 cm safety margin. The accuracy of tip positioning with the radiological landmark-based technique (R) and Peres' formula (P) was compared using transoesophageal echocardiography...
February 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28099302/comparison-of-ultrasound-and-mri-for-the-diagnosis-of-glenohumeral-dysplasia-in-brachial-plexus-birth-palsy
#2
Kenneth W Donohue, Kevin J Little, John P Gaughan, Scott H Kozin, Brian D Norton, Dan A Zlotolow
BACKGROUND: In this study, we investigated the agreement between measurements made on ultrasound and those made on magnetic resonance imaging (MRI) in the assessment of glenohumeral dysplasia resulting from brachial plexus birth palsy. METHODS: Thirty-nine patients (14 male and 25 female) with brachial plexus birth palsy were evaluated at 2 tertiary care centers. All patients underwent ultrasonography and MRI for suspected glenohumeral dysplasia. Studies were obtained at an average of 2 months apart (range, 0 to 6 months)...
January 18, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28096320/streptococcus-gordonii-a-rare-cause-of-prosthetic-joint-infection-in-a-total-hip-replacement
#3
Christopher Fenelon, John G Galbraith, David M Dalton, Eric Masterson
A 69-year-old female with a history of bilateral total hip replacements presented with rigors, fever and sudden onset left groin pain. A pelvic X-ray showed well-fixed implants. Blood results revealed a leucocytosis (white cell count 22.3 × 10(9) l(-1)) and elevated C-reactive protein (211 mg/l). Ultrasound-guided aspiration of her left hip grew Streptococcus gordonii No source infection could be identified apart from a new chronic sinus infection in a left upper incisor. Following a discussion with the patient a 6-week course of intravenous ceftriaxone was started and was successful in normalizing her inflammatory markers...
January 16, 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/28094757/which-joints-and-why-do-rheumatologists-scan-in-rheumatoid-arthritis-by-ultrasonography-a-real-life-experience
#4
Sibel Zehra Aydin, Salih Pay, Nevsun Inanc, Sevil Kamali, Omer Karadag, Paul Emery, Maria-Antonietta D'Agostino
OBJECTIVES: Ultrasonography (US) has been demonstrated to improve assessment of synovitis and disease activity in rheumatoid arthritis (RA). However, the utility and feasibility of US in RA in clinical practice in real life is not known. We aimed to investigate: i) the indications for performing US in RA in daily practice; and ii) whether the number of scanned joints varies according to the purpose. METHODS: Consecutive patients who had a US scan either for diagnosis or follow-up for RA from 5 centres were recruited...
January 15, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28094412/ultrasound-guided-approach-to-the-cervical-articular-process-joints-in-horses-a-validation-of-the-technique-in-cadavers
#5
Jessica Purefoy Johnson, John David Stack, Conor Rowan, Ian Handel, John Mark O'Leary
OBJECTIVES: To compare accuracy of the ultrasound-guided craniodorsal (CrD) approach with the dorsal (D) approach to the cervical articular process joints, and to evaluate the effect of transducer, needle gauge, and operator experience. METHODS: Cervical articular process joints from 14 cadaveric neck specimens were injected using either a D or CrD approach, a linear (13 MHx) or microconvex transducer (10 MHz), and an 18 or 20 gauge needle, by an experienced or inexperienced operator...
January 17, 2017: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/28087089/point-of-care-ultrasound-diagnosis-of-posterior-sternoclavicular-joint-dislocation
#6
Rachel R Bengtzen, Ryan C Petering
BACKGROUND: Posterior sternoclavicular dislocations can be challenging diagnostically, as traumatic force often happens to the lateral shoulder rather than directly to the sternoclavicular joint. Shoulder radiographs do not illustrate the sternoclavicular joint well, and can miss the diagnosis. This injury, however, has the potential for life-threatening complications due to proximity of mediastinal structures that might also be injured. CASE REPORT: The following case illustrates a delayed diagnosis of posterior sternoclavicular dislocation...
January 10, 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28086960/the-relationship-between-synovitis-quantified-by-an-ultrasound-7-joint-inflammation-score-and-physical-disability-in-rheumatoid-arthritis-a-cohort-study
#7
Jakub Závada, Petra Hánová, Jana Hurňáková, Lenka Szczuková, Michal Uher, Šárka Forejtová, Martin Klein, Herman Mann, Marta Olejárová, Olga Růžičková, Olga Šléglová, Karel Hejduk, Karel Pavelka
BACKGROUND: Restoring normal physical functioning is a major therapeutic aim in the management of rheumatoid arthritis (RA). It is unknown, whether the extent of synovial inflammation quantified by musculoskeletal ultrasound (US) can predict current or future capacity for physical functioning. To answer this question we investigated the longitudinal relationship between physical function assessed by the health assessment questionnaire (HAQ) and the German 7-joint ultrasound score (US7S) in a prospective cohort of patients with RA...
January 13, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28069229/rapid-formation-of-ni3sn4-joints-for-die-attachment-of-sic-based-high-temperature-power-devices-using-ultrasound-induced-transient-liquid-phase-bonding-process
#8
Z L Li, H J Dong, X G Song, H Y Zhao, J C Feng, J H Liu, H Tian, S J Wang
High melting point Ni3Sn4 joints for the die attachment of SiC-based high temperature power devices was successfully achieved using an ultrasound-induced transient liquid phase (TLP) bonding process within a remarkably short bonding time of 8s. The formed intermetallic joints, which are completely composed of the refined equiaxial Ni3Sn4 grains with the average diameter of 2μm, perform the average shear strength of 26.7MPa. The sonochemical effects of ultrasonic waves dominate the mechanism and kinetics of the rapid formation of Ni3Sn4 joints...
May 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28069220/ultrasonic-promoted-rapid-tlp-bonding-of-fine-grained-7034-high-strength-aluminum-alloys
#9
Weibing Guo, Xuesong Leng, Tianmin Luan, Jiuchun Yan, Jingshan He
High strength aluminum alloys are extremely sensitive to the thermal cycle of welding. An ultrasonic-promoted rapid TLP bonding with an interlayer of pure Zn was developed to join fine-grained 7034 aluminum alloys at the temperature of lower 400°C. The oxide film could be successfully removed with the ultrasonic vibration, and the Al-Zn eutectic liquid phase generated once Al and Zn contacted with each other. Longer ultrasonic time can promote the diffusion of Zn into the base metal, which would shorten the holding time to complete isothermal solidification...
May 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28058962/short-term-effect-of-ultrasound-guided-low-molecular-weight-hyaluronic-acid-injection-on-clinical-outcomes-and-imaging-changes-in-patients-with-rheumatoid-arthritis-of-the-ankle-and-foot-joints-a-randomized-controlled-pilot-trial
#10
Chien-Chih Wang, Si-Huei Lee, Hsiao-Yi Lin, Fu-Wei Liu, Hong-Jen Chiou, Rai-Chi Chan, Chen-Liang Chou
To determine whether hyaluronic acid (HA) injection into rheumatoid arthritis ankles and feet can achieve improvement in foot function and reduce synovial hyper-vascularization. Forty-four patients with RA having unilateral or bilateral painful ankle and foot involvement (N = 75) were studied. All the patients were randomized to receive HA (N = 40) or lidocaine (LI) (N = 35) injection at 2-week intervals; Clinical assessments were performed using a visual analog scale (VAS) and foot function index (FFItotal) including subscales of pain (FFIpain) before injection at baseline, 4 weeks (first evaluation) and 12 weeks (secondary evaluation)...
January 6, 2017: Modern Rheumatology
https://www.readbyqxmd.com/read/28053262/functional-outcomes-of-conservatively-managed-acute-ruptures-of-the-achilles-tendon
#11
J E Lawrence, P Nasr, D M Fountain, L Berman, A H N Robinson
AIMS: This prospective cohort study aims to determine if the size of the tendon gap following acute rupture of the Achilles tendon shows an association with the functional outcome following non-operative treatment. PATIENTS AND METHODS: All patients presenting within two weeks of an acute unilateral rupture of the Achilles tendon between July 2012 and July 2015 were considered for the study. In total, 38 patients (nine female, 29 male, mean age 52 years; 29 to 78) completed the study...
January 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28047660/we-de-bra-02-best-in-physics-joint-imaging-therapy-prototype-for-an-in-room-supercompounded-3d-volumetric-ultrasound-image-guidance-system-for-prone-breast-sbrt
#12
T Chiu, Y Zhang, B Hrycushko, B Zhao, R Chopra, S Jiang, X Gu
PURPOSE: SBRT requires both substantial positioning precision and accuracy. However, accurate dose delivery is challenging for prone breast SBRT due to breast deformation, lumpectomy cavity shrinkage and ineffective CT/CBCT on soft tissue. We developed a prototype in-room 3D volumetric ultrasound (US) image guidance system for prone breast SBRT. METHODS: The designed system, set beneath a prone breast board, consists of a customized breast cup, rotational scanning water container, and a portable US scanner...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047228/th-ab-202-05-best-in-physics-joint-imaging-therapy-first-online-ultrasound-guided-mlc-tracking-for-real-time-motion-compensation-in-radiotherapy
#13
S Ipsen, R Bruder, R O'Brien, P Keall, A Schweikard, P Poulsen
PURPOSE: While MLC tracking has been successfully used for motion compensation of moving targets, current real-time target localization methods rely on correlation models with x-ray imaging or implanted electromagnetic transponders rather than direct target visualization. In contrast, ultrasound imaging yields volumetric data in real-time (4D) without ionizing radiation. We report the first results of online 4D ultrasound-guided MLC tracking in a phantom. METHODS: A real-time tracking framework was installed on a 4D ultrasound station (Vivid7 dimension, GE) and used to detect a 2mm spherical lead marker inside a water tank...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28045415/percutaneous-thrombin-injection-treatment-of-a-femoral-artery-pseudoaneurysm-with-simultaneous-arterial-balloon-occlusion-case-report-and-review-of-the-literature
#14
Onur Ergun, Pınar Çeltikçi, İdil Güneş Tatar, Metin Yılmaz, Baki Hekimoğlu
Iatrogenic femoral artery pseudoaneurysm at the level of the hip joint in a 52-year-old patient was treated by ultrasound-guided percutaneous thrombin injection, while a balloon was inflated at the neck of the pseudoaneurysm under fluoroscopy, to prevent thrombin leakage to the arterial system.
December 2016: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28044199/muscle-fascicle-shortening-behaviour-of-vastus-lateralis-during-a-maximal-force-velocity-test
#15
Hugo Hauraix, Sylvain Dorel, Giuseppe Rabita, Gaël Guilhem, Antoine Nordez
PURPOSE: Muscle fascicles-tendon interactions are the main determinant in production of high joint velocity. Currently, no study has investigated the muscle fascicles behaviour of knee extensor muscles until the highest reachable velocity (e.g., unloaded knee extension). We aimed to track the changes in vastus lateralis fascicles length during knee extensions to quantify muscle fascicles and tendinous tissues contributions to muscle-tendon unit shortening and to determine maximal muscle fascicles shortening velocity...
January 3, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28039006/pilot-study-to-show-the-feasibility-of-high-resolution-sagittal-ultrasound-imaging-of-the-temporomandibular-joint
#16
Richard W Katzberg, William F Conway, Susan J Ackerman, Theresa S Gonzales, Valeriy Kheyfits, Michael S Cronan
PURPOSE: To show the feasibility of acquiring high-resolution sagittal ultrasound (US) images of the temporomandibular joint (TMJ). PATIENTS AND METHODS: We used commercially available US probes to assess the TMJ via a transoral soft tissue window to acquire sagittal images. Magnetic resonance imaging and clinical correlation were compared with the US findings by the consensus assessment of 2 of the senior investigators. RESULTS: The sample was composed of 10 TMJs (6 participants) with an age range of 34 to 71 years and a male-female ratio of 3:1...
December 12, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28031953/ultrasound-with-mineral-water-or-aqua-gel-to-reduce-pain-and-improve-the-womac-of-knee-osteoarthritis
#17
Sahar Ahmed Abdalbary
AIMS: Osteoarthritis is the most degenerative joint disease. The aim was to investigate the effects of ultrasound using mineral water or aqua sonic gel on severity of knee pain, measured by the visual analog scale and the Western Ontario and McMaster Universities Arthritis Index (WOMAC). MATERIALS AND METHODS: Thirty women with bilateral osteoarthritis of the knee were assigned to two groups: ultrasound with mineral water (group 1, n = 15) or with aqua sonic gel (group 2, n = 15)...
March 2016: Future Science OA
https://www.readbyqxmd.com/read/28028155/abatacept-reduces-disease-activity-and-ultrasound-power-doppler-in-acpa-negative-undifferentiated-arthritis-a-proof-of-concept-clinical-and-imaging-study
#18
Maya H Buch, Elizabeth M A Hensor, Chadi Rakieh, Jane E Freeston, Edward Middleton, Sarah Horton, Sudipto Das, Charles Peterfy, Ai Lyn Tan, Richard J Wakefield, Paul Emery
OBJECTIVES: No proven treatment exists for ACPA-negative undifferentiated arthritis (UA). The aim of this study was to evaluate whether abatacept is effective in treating poor prognosis, ACPA-negative UA, including its effect on power Doppler on US (PDUS). METHODS: A proof-of-concept, open-label, prospective study of 20 patients with DMARD-naïve, ACPA-negative UA (⩾2 joint synovitis) and PDUS ⩾ 1 with clinical and 20-joint US (grey scale/PDUS) assessments at baseline, 6, 12, 18 and 24 months...
January 2017: Rheumatology
https://www.readbyqxmd.com/read/28027386/paresis-of-the-peroneal-nerve-a-rare-but-severe-long-term-complication-of-polyethylene-wear-in-knee-arthroplasty
#19
Matthias Aurich, Mark Lenz, Norman Best
One of the most important limiting factors in the long-term success of total knee arthroplasty is polyethylene wear. Particles of the polyethylene inserts have been shown to elicit a foreign body response, which produces bone resorption and osteolysis, ultimately leading to loosening and component failure. The authors report on a case of an elderly patient who underwent a total knee arthroplasty almost 2 decades ago. Clinical and radiological checkups of the knee had not been performed recently. He now presented with a painful and swollen knee, recurrent joint effusion and swelling of the lower leg, and paresis of the peroneal nerve...
December 27, 2016: Orthopedics
https://www.readbyqxmd.com/read/28024659/diagnosis-of-complex-pulley-ruptures-using-ultrasound-in%C3%A2-cadaver-models
#20
Isabelle Schöffl, Arnica Hugel, Volker Schöffl, Wolfgang Rascher, Jörg Jüngert
Pulley ruptures are common in climbing athletes. The purposes of this study were to determine the specific positioning of each pulley with regards to the joint, and to evaluate the ultrasound diagnostics of various pulley rupture combinations. For this, 34 cadaver fingers were analyzed via ultrasound, the results of which were compared to anatomic measurements. Different pulley ruptures were then simulated and evaluated using ultrasound in standardized dynamic forced flexion. Visualization of the A2 and A4 pulleys was achieved 100% of the time, while the A3 pulley was visible in 74% of cases...
December 23, 2016: Ultrasound in Medicine & Biology
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