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https://www.readbyqxmd.com/read/28097523/intravascular-ultrasound-characterization-of-a-tissue-engineered-vascular-graft-in-an-ovine-model
#1
Victoria K Pepper, Elizabeth S Clark, Cameron A Best, Ekene A Onwuka, Tadahisa Sugiura, Eric D Heuer, Lilamarie E Moko, Shinka Miyamoto, Hideki Miyachi, Darren P Berman, Sharon L Cheatham, Joanne L Chisolm, Toshiharu Shinoka, Christopher K Breuer, John P Cheatham
Patients who undergo implantation of a tissue-engineered vascular graft (TEVG) for congenital cardiac anomalies are monitored with echocardiography, followed by magnetic resonance imaging or angiography when indicated. While these methods provide data regarding the lumen, minimal information regarding neotissue formation is obtained. Intravascular ultrasound (IVUS) has previously been used in a variety of conditions to evaluate the vessel wall. The purpose of this study was to evaluate the utility of IVUS for evaluation of TEVGs in our ovine model...
January 17, 2017: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/28095914/vascular-mapping-of-the-retroauricular-skin-proposal-for-a-posterior-superior-surgical-incision-for-transcutaneous-bone-conduction-hearing-implants
#2
Adam Perenyi, Zsofia Bere, Janos Jarabin, Balazs Sztano, Edit Kukla, Ziad Bikhazi, Laszlo Tiszlavicz, Ferenc Toth, Jozsef Geza Kiss, Laszlo Rovo
BACKGROUND: Passive transcutaneous osseointegrated hearing implant systems have become increasingly popular more recently. The area over the implant is vulnerable due to vibration and pressure from the externally worn sound processor. Good perfusion and neural integrity has the potential to reduce complications. The authors' objective was to determine the ideal surgical exposure to maintain perfusion and neural integrity and decrease surgical time as a result of reduced bleeding. METHODS: The vascular anatomy of the temporal-parietal soft tissue was examined in a total of 50 subjects...
January 17, 2017: Journal of Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28094893/a-comparison-of-skeletal-maturity-assessed-by-radiological-and-ultrasonic-methods
#3
Katinka Utczas, Agota Muzsnai, Noel Cameron, Annamaria Zsakai, Eva B Bodzsar
OBJECTIVES: The estimation of skeletal maturity is a useful tool in pediatric practice to determine the degree of delay or advancement in growth disorders and the effectiveness of treatment in conditions that influence linear growth. Skeletal maturity of children is commonly assessed using either Greulich-Pyle (GP) or Tanner-Whitehouse methods (TW2 and TW3). However, a less invasive ultrasonic method, that does not use ionizing radiation, has been suggested for use in epidemiological studies of skeletal maturity...
January 17, 2017: American Journal of Human Biology: the Official Journal of the Human Biology Council
https://www.readbyqxmd.com/read/28077355/no-evidence-for-the-use-of-stem-cell-therapy-for-tendon-disorders-a-systematic-review
#4
Haiko I M F L Pas, Maarten H Moen, Hidde J Haisma, Marinus Winters
INTRODUCTION: Stem cells have emerged as a new treatment option for tendon disorders. We systematically reviewed the current evidence for stem cell therapy in tendon disorders. METHODS: Randomised and non-randomised controlled trials, cohort studies and case series with a minimum of 5 cases were searched in MEDLINE, CENTRAL, EMBASE, CINAHL, PEDro and SPORTDiscus. In addition, we searched grey literature databases and trial registers. Only human studies were included and no time or language restrictions were applied to our search...
January 11, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28070037/-bm-mscs-from-wuzhishan-mini-pigs-delay-the-progress-of-renal-fibrosis-induced-by-chronic-kidney-disease-through-%C3%A2-autocrine-hepatocyte-growth-factor-in-vitro
#5
Yang Xiang, Jiale Long, Jiansheng Xing, Yuanhui Gao, Qing Cheng, Yong Cai, Zhenxiang Liu, Shufang Zhang, Lie Chen, Chao Yang, Zhiming Bai
To isolate bone marrow mesenchymal stem cells (BM-MSCs) and establish the model of chronic kidney disease (CKD) of Wuzhishan (WZS) mini-pig, and to study the repairment effect of BM-MSCs on CKD-induced renal fibrosis in vitro.
 Methods: Density gradient method was used to isolate and culture BM-MSCs. The cells were verified by morphology, phenotype, differentiation and so on. The left partial ureteral obstruction (LPUUO) was used to establish the CKD model, which was evaluated by B-ultrasound, single-photon emission computed tomography (SPECT), HE and Masson staining...
December 28, 2016: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28065372/dynamic-high-resolution-ultrasound-of-intrinsic-and-extrinsic-ligaments-of-the-wrist-how-to-make-it-simple
#6
REVIEW
Salvatore Gitto, Carmelo Messina, Giovanni Mauri, Alberto Aliprandi, Francesco Sardanelli, Luca Maria Sconfienza
Wrist ligaments are crucial structures for the maintenance of carpal stability. They are classified into extrinsic ligaments, connecting the carpus with the forearm bones or distal radioulnar ligaments, and intrinsic ligaments, entirely situated within the carpus. Lesions of intrinsic and extrinsic ligaments of the wrist have been demonstrated to occur largely, mostly in patients with history of trauma and carpal instability, or rheumatoid arthritis. Ultrasound allows for rapid, cost-effective, non-invasive and dynamic evaluation of the wrist, and may represent a valuable diagnostic tool...
February 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28063227/lipus-suppressed-lps-induced-il-1%C3%AE-through-the-inhibition-of-nf-%C3%AE%C2%BAb-nuclear-translocation-via-at1-plc%C3%AE-pathway-in-mc3t3-e1
#7
Mayu Nagao, Natsuko Tanabe, Soichiro Manaka, Masako Naito, Kumiko Nakai, Tadahiro Takayama, Takayuki Kawato, Go Torigoe, Jumpei Sekino, Naoya Tsukune, Masao Maeno, Naoto Suzuki, Shuichi Sato
Inflammatory cytokines, interleukin (IL)-1, IL-6, and TNF-a, are involved in inflammatory bone diseases such as rheumatoid osteoarthritis and periodontal disease. Particularly, periodontal disease, which destroys alveolar bone, is stimulated by lipopolysaccharide (LPS). Low-intensity pulsed ultrasound (LIPUS) is used for bone healing in orthopedics and dental treatments. However,the mechanism underlying effects of LIPUS on LPS-induced inflammatory cytokine are not well understood. We therefore aimed to investigate the role of LIPUS on LPS-induced IL-1a production...
January 7, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28060911/resting-energy-expenditure-in-adults-with-becker-s-muscular-dystrophy
#8
Matthew F Jacques, Paul Orme, Jonathon Smith, Christopher I Morse
PURPOSE: The purpose of this study was: 1) To compare Resting energy expenditure (REE) in adult males with Becker's Muscular Dystrophy (BeMD, n = 21, 39 ±12 years) and healthy controls (CTRL, n = 12, 37 ±12 years) 2) Determine whether other physiological parameters correlate with REE in BeMD, and 3) Compare current prediction methods of REE with measured REE. METHODS: REE was calculated via indirect calorimetry using continuous, expired gas analysis following an overnight fast...
2017: PloS One
https://www.readbyqxmd.com/read/28053262/functional-outcomes-of-conservatively-managed-acute-ruptures-of-the-achilles-tendon
#9
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/28049249/prevalence-of-osteoporosis-and-effectiveness-of-screening-test-using-ultrasound-bone-densitometry-and-education-in-a-community-dwelling-population
#10
Yu Jun Kwon, Ki Soo Park, Bong Hoi Choi, Byung Sung Kim, Yong Chan Ha
This prospective intervention study was undertaken to estimate the prevalence and treatment rate of osteoporosis following osteoporosis screening tests in the same cohort. From November 1, 2014 to August 31, 2015, participants received screening tests for osteoporosis using ultrasound bone densitometry and education concerning osteoporosis and related conditions. The participants were interviewed using a questionnaire on the diagnosis and initiation of osteoporosis treatment during the follow-up period. Of 960 potential participants, 595 people (68...
February 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28048787/su-f-i-14-3d-breast-digital-phantom-for-xact-imaging
#11
S Tang, Y Chen, S Ahmad, K Yang, R Laaroussi, J Chen, P Samant, L Xiang
PURPOSE: The X-ray induced acoustic computed tomography (XACT) is a new imaging modality which combines X-ray contrast and high ultrasonic resolution in a single modality. Using XACT in breast imaging, a 3D breast volume can be imaged by only one pulsed X-ray radiation, which could dramatically reduce the imaging dose for patients undergoing breast cancer screening and diagnosis. A 3D digital phantom that contains both X-ray properties and acoustic properties of different tissue types is indeed needed for developing and optimizing the XACT system...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047213/th-ab-209-07-high-resolution-x-ray-induced-acoustic-computed-tomography
#12
L Xiang, S Tang, M Ahmad, L Xing
PURPOSE: X-ray radiographic absorption imaging is an invaluable tool in medical diagnostics, biology and materials science. However, the use of conventional CT is limited by two factors: the detection sensitivity to weak absorption material and the radiation dose from CT scanning. The purpose of this study is to explore X-ray induced acoustic computed tomography (XACT), a new imaging modality, which combines X-ray absorption contrast and high ultrasonic resolution to address these challenges...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046546/th-ab-209-08-next-generation-dedicated-3d-breast-imaging-with-xact
#13
S Tang, Y Chen, J Chen, P Samant, S Ahmad, H Liu, L Xiang
PURPOSE: Exposure to radiation increases the risk of cancer. We have designed a new imaging paradigm, X-ray induced acoustic computed tomography (XACT). Applying this innovative technology to breast imaging, an X-ray exposure can generate a 3D acoustic image, which dramatically reduces the radiation dose to patients when compared to conventional breast CT. METHODS: Theoretical calculations are done to determine the appropriate X-ray energy and ultrasound frequency in breast XACT imaging...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28042132/summary-findings-of-a-systematic-literature-review-of-the-ultrasound-assessment-of-bone-erosions-in-rheumatoid-arthritis
#14
(no author information available yet)
No abstract text is available yet for this article.
January 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28040117/skeletal-dysplasia-with-bowing-long-bones-proposed-flowchart-for-prenatal-diagnosis-with-case-demonstration
#15
Gabriele Tonni, Marcella Palmisano, Mario Lituania, Gianpaolo Grisolia, Ave Maria Baffico, Maria Paola Bonasoni, Pierpaolo Pattacini, Claudio De Felice, Edward Araujo Júnior
OBJECTIVE: Skeletal dysplasia with bowing long bones is a rare group of multiple characterized congenital anomalies. MATERIALS AND METHODS: We introduce a simple, practical diagnostic flowchart that may be helpful in identifying the appropriate pathway of obstetrical management. RESULTS: Herein, we describe four fetal cases of bent bony dysplasia that focus on ultrasound findings, phenotype, molecular tests, distinctive X-ray features, and chondral growth plate histology...
December 2016: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28040043/relationships-of-linear-and-nonlinear-ultrasound-parameters-with-porosity-and-trabecular-spacing-in-trabecular-bone-mimicking-phantoms
#16
Kang Il Lee
The speed of sound (SOS), the normalized broadband ultrasound attenuation (nBUA), and the nonlinear parameter (B/A) were measured in 18 trabecular-bone-mimicking phantoms consisting of water-saturated aluminum foams. The strong slow wave and the very weak fast wave were consistently observed in the signals transmitted through all of the phantoms. It was found that the SOS increased as the porosity and the trabecular spacing increased. In contrast, both the nBUA and the B/A showed opposite dependences on the porosity and the trabecular spacing...
December 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28039045/impact-of-age-gender-and-body-composition-on-bone-quality-in-an-adult-population-from-the-middle-areas-of-china
#17
Zenghui Ding, Yanyan Chen, Yang Xu, Xu Zhou, Yubing Xu, Zuchang Ma, Yining Sun
Identifying modifiable factors that influence bone status during adulthood to maximize bone quality is a potential primary strategy in the prevention of osteoporosis in later life. We investigated the impact of body height, body weight, body mass index, and body composition on calcaneal bone characteristics as measured with quantitative ultrasound in 441 Chinese adults (238 women) aged 20-55 yr from the middle areas of China. Body composition, including fat-free mass (FFM), muscle mass, and fat mass were obtained by bioelectrical impedance analysis...
December 27, 2016: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/28028632/the-rs3736228-polymorphism-in-the-lrp5-gene-is-associated-with-calcaneal-ultrasound-parameter-but-not-with-body-composition-in-a-cohort-of-young-caucasian-adults
#18
María Correa-Rodríguez, Jacqueline Schmidt-RioValle, Blanca Rueda-Medina
The aim of the present study was to investigate the possible influence of low-density lipoprotein receptor-related protein 5 (LRP5) and sclerostin (SOST) genes as genetic factors contributing to calcaneal quantitative ultrasound (QUS) and body composition variables in a population of young Caucasian adults. The study population comprised a total of 575 individuals (mean age 20.41years; SD 2.36) whose bone mass was assessed through QUS to determine broadband ultrasound attenuation (BUA, dB/MHz). Body composition measurements were performed using a body composition analyser...
December 27, 2016: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28027610/effects-of-low-intensity-pulsed-ultrasound-on-implant-osseointegration-in-ovariectomized-rats
#19
Hongbo Zhou, Yongfu Hou, Zhimin Zhu, Weixiong Xiao, Qian Xu, Lei Li, Xin Li, Wenchuan Chen
OBJECTIVES: To investigate the effect of low-intensity pulsed ultrasound (US) on peri-implant bone healing and osseointegration under osteoporotic conditions. METHODS: Seventy-two 12-week-old female Sprague Dawley rats received bilateral ovariectomies. Twelve weeks later, titanium implants were bilaterally placed in the proximal tibial metaphysis. The right tibia was exposed to low-intensity pulsed US (40 mW/cm(2) , spatial and temporal average) for 20 min/d starting the 2nd day after implantation, and the left tibia served as a control without stimulation...
April 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28027386/paresis-of-the-peroneal-nerve-a-rare-but-severe-long-term-complication-of-polyethylene-wear-in-knee-arthroplasty
#20
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
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