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Ultrasound bone

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https://www.readbyqxmd.com/read/29776600/contrast-enhanced-ultrasound-quantifies-the-perfusion-within-tibial-non-unions-and-predicts-the-outcome-of-revision-surgery
#1
Daniel Krammer, Gerhard Schmidmaier, Marc-André Weber, Julian Doll, Christoph Rehnitz, Christian Fischer
Vascularity is one of the factors determining successful bone regeneration. This prospective study focused on quantifying the microperfusion of tibial non-unions with contrast-enhanced ultrasound (CEUS) 12 wk after revision surgery and comparing it with the osseous consolidation at a maximum of 24 mo assessed with standard radiography and computed tomography. Of 36 patients with tibial non-unions, 28 (77.8%) manifested consolidation, and 8 patients required further revision surgery. CEUS revealed significantly higher perfusion in consolidated versus persistent non-unions for all quantification parameters (e...
May 15, 2018: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29776006/mineralization-can-be-an-incidental-ultrasonographic-finding-in-equine-tendons-and-ligaments
#2
Etienne J O O'Brien, Roger K W Smith
Tendon/ligament mineralization is recognized in horses but information regarding its clinical significance is limited. The aims of this observational study were to report the structures most commonly affected by ultrasonographically detectable mineralization and, for these, determine frequency of diagnosis and key clinical features. Cases presented at our hospital in April 1999-April 2013 and September 2014-November 2015 were included: a total of 27 horses (22 retrospective, five prospective). Mineralizations were most common in deep digital flexor tendons (10) and suspensory ligament branches (eight), representing 10% and 7% (estimated), respectively, of horses diagnosed with injuries to these structures during the study...
May 18, 2018: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/29775451/-recurrent-urolithiasis-as-a-symptom-of-primary-hyperparathyroidism-in-a-16-year-old-boy
#3
Monika Wojciechowska, Beata Bieniaś, Aleksandra Sobieszczańska-Droździel, Anna Wieczorkiewicz-Płaza, Iwona Beń-Skowronek, Przemysław Sikora
Primary hyperparathyroidism is one of the most common endocrine diseases, however, it is rare in children. In most cases, it is caused by adenoma of these organs. Its most common complications include urolithiasis, nephrocalcinosis and osteoporosis. CASE REPORT: A 16-year-old patient was admitted to our Clinic because of his first-ever renal colic. The ultrasound examination revealed rightsided hydronephrosis caused by the presence of 9 mm stone in the upper part of the right ureter. In addition, the presence of 8 mm stone in the middle calyx of the left kidney was found...
April 23, 2018: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29774894/value-of-diffusion-weighted-imaging-for-monitoring-tissue-change-during-magnetic-resonance-guided-high-intensity-focused-ultrasound-therapy-in-bone-applications-an-ex-vivo-study
#4
Sharon L Giles, Jessica M Winfield, David J Collins, Ian Rivens, John Civale, Gail R Ter Haar, Nandita M deSouza
Background: Magnetic resonance (MR)-guided high-intensity focused ultrasound (HIFU) can palliate metastatic bone pain by periosteal neurolysis. We investigated the value of diffusion-weighted imaging (DWI) for monitoring soft tissue changes adjacent to bone during MR-guided HIFU. We evaluated the repeatability of the apparent diffusion coefficient (ADC) measurement, the temporal evolution of ADC change after sonication, and its relationship with thermal parameters. Methods: Ex-vivo experiments in lamb legs ( n = 8) were performed on a Sonalleve MR-guided HIFU system...
2018: European radiology experimental
https://www.readbyqxmd.com/read/29770562/evaluation-of-dental-implant-stability-in-bone-phantoms-comparison-between-a-quantitative-ultrasound-technique-and-resonance-frequency-analysis
#5
Romain Vayron, Vu-Hieu Nguyen, Benoît Lecuelle, Guillaume Haiat
BACKGROUND: Resonance frequency analyses and quantitative ultrasound methods have been suggested to assess dental implant primary stability. PURPOSE: The purpose of this study was to compare the results obtained using these two techniques applied to the same dental implants inserted in various bone phantoms. MATERIALS AND METHODS: Different values of trabecular bone density and cortical thickness were considered to assess the effect of bone quality on the respective indicators (UI and ISQ)...
May 16, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29769823/relationship-between-achilles-tendon-stiffness-and-ground-contact-time-during-drop-jumps
#6
Mohamed Abdelsattar, Andreas Konrad, Markus Tilp
The purpose of this study was to investigate the relationship between Achilles tendon stiffness and ground contact time (GCT) during drop jumps. The property of "springiness" and a short GCT during the movement is required in several types of sports. Therefore, a stiff tendon might be advantageous due to the quick force transmission from the muscle to the bone. Hence, a secondary aim was to relate Achilles tendon stiffness with squat jump (SJ) and counter movement jump (CMJ) performance, respectively...
June 2018: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29767241/transcriptome-sequencing-analysis-reveals-the-effect-of-combinative-treatment-with-low%C3%A2-intensity-pulsed-ultrasound-and-magnesium-ions-on-hfob1-19-human-osteoblast-cells
#7
Haiyue Zu, Xueting Yi, Dewei Zhao
Biodegradable magnesium (Mg) materials are considered ideal as osteosynthesis implants. However, clinical application has proven complex. This is primarily associated with the issue of reducing the extent of implant degradation to a range acceptable for the human body, while simultaneously enhancing osteogenesis or osteoinduction. In the present study, a combination of Mg ions and low‑intensity pulsed ultrasound (LIPUS) treatment was applied in hFOB 1.19 human osteoblast cells as a potential strategy to resolve this issue...
May 11, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29764889/autologous-stem-cells-in-achilles-tendinopathy-ascat-protocol-for-a-phase-iia-single-centre-proof-of-concept-study
#8
Andrew J Goldberg, Razi Zaidi, Deirdre Brooking, Louise Kim, Michelle Korda, Lorenzo Masci, Ruth Green, Paul O'Donnell, Roger Smith
INTRODUCTION: Achilles tendinopathy (AT) is a cause of pain and disability affecting both athletes and sedentary individuals. More than 150 000 people in the UK every year suffer from AT.While there is much preclinical work on the use of stem cells in tendon pathology, there is a scarcity of clinical data looking at the use of mesenchymal stem cells to treat tendon disease and there does not appear to be any studies of the use of autologous cultured mesenchymal stem cells (MSCs) for AT...
May 14, 2018: BMJ Open
https://www.readbyqxmd.com/read/29764021/-misdiagnosic-analysis-and-treatment-of-pyriform-sinus-fistula-in-children
#9
J Ma, C Ming, F Lou, M L Wang, K Lin, W J Zeng, Z C Li, X F Liu, T S Zhang
Objective: To discuss the misdiagnosis of pyriform sinus fistula and to better understand this kind of illness. Methods: The analysis was based on twenty-eight patients with congenital pyriform sinus fistula aged from 11 months to 14 years, with the median age of 5 years, and who were surgically treated from January 2013 to January 2017 in Kunming Children's Hospital.Twenty patients were misdiagnosed in other hospital.After the routine examination of neck ultrasound and enhanced CT, internal fistula was found by self-retaining laryngoscope, traced by methylene blue, and excised by high ligation...
May 7, 2018: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/29763506/simplifying-zygomatic-implant-site-preparation-using-ultrasonic-navigation-a-technical-note
#10
Gerardo Pellegrino, Achille Tarsitano, Valerio Taraschi, Tomaso Vercellotti, Claudio Marchetti
Zygomatic implant site preparation could be considered a challenging procedure because of the use of a very long twist drill that could sometimes be difficult to control due to the need for drilling the malar bone on an oblique surface. Ultrasound was recently suggested to achieve better control, but the specific long tips required are not readily available, and the elongated tip also tends to reduce the efficacy. This technical note describes a proposal of a novel computer-aided technique to simplify the procedure of zygomatic implant site preparation...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29759948/measuring-relative-positions-and-orientations-of-the-tibia-with-respect-to-the-femur-using-one-channel-3d-tracked-a-mode-ultrasound-tracking-system-a-cadaveric-study
#11
Kenan Niu, Jasper Homminga, Victor Sluiter, André Sprengers, Nico Verdonschot
The purpose of this study is to investigate the technical feasibility of measuring relative positions and orientations of the tibia with respect to the femur in an in-vitro experiment by using a 3D-tracked A-mode ultrasound system and to determine its accuracy of angular and translational measurements. As A-mode ultrasound is capable of detecting bone surface through soft tissue in a non-invasive manner, the combination of a single A-mode ultrasound transducer with an optical motion tracking system provides the possibility for digitizing the 3D locations of bony points at different anatomical regions on the thigh and the shank...
May 11, 2018: Medical Engineering & Physics
https://www.readbyqxmd.com/read/29757474/automated-patient-specific-transperineal-ultrasound-probe-setups-for-prostate-cancer-patients-undergoing-radiotherapy
#12
Saskia Maria Camps, Frank Verhaegen, Ben G L Vanneste, Peter H N de With, Davide Fontanarosa
PURPOSE: The use of ultrasound imaging is not widespread in prostate cancer radiotherapy workflows, despite several advantages (e.g. allowing real-time volumetric organ tracking). This can be partially attributed to the need for a trained operator during acquisition and interpretation of the images. We introduce and evaluate an algorithm that can propose a patient-specific transperineal ultrasound probe setup, based on a CT scan and anatomical structure delineations. The use of this setup during the simulation and treatment stage could improve usability of ultrasound imaging for relatively untrained operators (radiotherapists with less than one year experience with ultrasound)...
May 14, 2018: Medical Physics
https://www.readbyqxmd.com/read/29757464/ultrasonography-for-non-invasive-and-real-time-evaluation-of-peri-implant-tissue-dimensions
#13
Hsun-Liang Chan, Khaled Sinjab, Junying Li, Zhaozhao Chen, Hom-Lay Wang, Oliver D Kripfgans
AIM: Existing methods for evaluating marginal bone loss and tissue biotype around dental implants present with many limitations. The aim of this study was to examine the accuracy of high-resolution, 3-dimensional ultrasound to measure peri-implant tissue dimensions. MATERIAL AND METHODS: A 25-MHz ultrasound probe prototype was used to scan peri-implant tissues of 17 implants from 7 fresh human cadavers. Four ultrasonic measurements were made: the marginal bone level/thickness, and mucosal level/thickness...
May 14, 2018: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/29755605/the-prevalence-of-osteopenia-and-osteoporosis-among-malaysian-type-2-diabetic-patients-using-quantitative-ultrasound-densitometer
#14
Shaymaa Abdalwahed Abdulameer, Mohanad Naji Sahib, Syed Azhar Syed Sulaiman
Background: Type 2 Diabetes Mellitus (T2DM) and osteoporosis are both chronic conditions and the relationship between them is complex. Objective: The aims of this study were to assess the prevalence of Low Bone Mineral density (LBMD, i.e ., osteopenia and osteoporosis), as well as, the difference and associations between Quantitative Ultrasound Scan (QUS) parameters with socio-demographic data and clinical related data among T2DM in Penang, Malaysia. Method: An observational, cross-sectional study with a convenient sample of 450 T2DM patients were recruited from the outpatient diabetes clinic at Hospital Pulau Pinang (HPP) to measure Bone Mineral Density (BMD) at the heel bone using QUS...
2018: Open Rheumatology Journal
https://www.readbyqxmd.com/read/29754519/the-role-of-imaging-in-early-diagnosis-and-prevention-of-joint-damage-in-inflammatory-arthritis
#15
Jiang Yue, Dongze Wu, Lai-Shan Tam
Inflammatory arthritis is characterized by chronic inflammation in the synovium, associated with degradation of cartilage and erosion of juxta-articular bone. The bone loss and joint destruction mediated by aberrant immunological responses resulting in proinflammatory cytokine release and various immune cell activation are known as osteoimmunology. Areas covered: A structured literature search including Medline and PubMed, Cochrane meta-analyses and abstracts of international congresses was performed to review joint damage in inflammatory arthritis in terms of pathogenesis, novel imaging assessment and prevention...
May 13, 2018: Expert Review of Clinical Immunology
https://www.readbyqxmd.com/read/29753373/dipstick-proteinuria-and-reduced-estimated-glomerular-filtration-rate-as-independent-risk-factors-for-osteoporosis
#16
Chun-Wu Tung, Yung-Chien Hsu, Ya-Hsueh Shih, Pey-Jium Chang, Chun-Liang Lin
BACKGROUND: Osteoporosis is associated with a poor quality of life and mortality. Proteinuria contributes to vitamin D deficiency and osteoblast dysfunction. The correlation between estimated glomerular filtration rate (eGFR) and bone density still remains elusive. Therefore, we sought to investigate whether reduced eGFR or proteinuria are independently associated with the osteoporotic risk. METHODS: We conducted a cross-sectional study using community-based health survey data from January 2004 to December 2008 in southern Taiwan...
May 2018: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/29744183/preoperative-evaluation-of-bone-quality-for-dental-implantation-using-an-ultrasound-axial-transmission-device-in-an-ex-vivo-model
#17
Shinsuke Okada, Akira Kawano, Hiroshi Oue, Yosuke Takeda, Miyuki Yokoi, Katsunori Koretake, Kazuhiro Tsuga
This study investigated the clinical utility of an ultrasound axial transmission device in preoperative evaluation of bone quality for dental implantation, by clarifying the relationship between cortical bone speed of sound (cSOS), insertion torque values (ITV), and implant stability quotient (ISQ) in porcine femur bone. Eleven fresh porcine femurs, without soft tissue, were prepared. The cSOS of these bones were measured using the axial transmission device. Bone mineral density (BMD) and porosity (Po) were measured in cortical bone samples obtained from the region of ultrasound measurements by X-ray microcomputed tomography...
June 2017: Clinical and Experimental Dental Research
https://www.readbyqxmd.com/read/29743072/usefulness-of-circuit-training-at-home-for-improving-bone-mass-and-muscle-mass-while-losing-fat-mass-in-undergraduate-female-students
#18
Yoko Takahata
BACKGROUND: The purpose of this study was to determine whether or not circuit training at home affects the calcaneus quantitative ultrasound status as well as other indices of body composition among undergraduate female students. METHODS: Forty-one adolescents were recruited (18.5 ± 0.6 years old). The stiffness index of the calcaneus, broadband ultrasound attenuation of the calcaneus, speed of sound of the calcaneus, and body frame index. This was a three-month intervention study, so the measurements were conducted at baseline, 2 months later, and 3 months later while the subjects underwent circuit training at home...
May 9, 2018: Lipids in Health and Disease
https://www.readbyqxmd.com/read/29738919/feasibility-of-low-frequency-ultrasound-imaging-using-pulse-compressed-parametric-ultrasound
#19
Hideyuki Nomura, Hideo Adachi, Tomoo Kamakura
When using high-frequency (HF) ultrasound in sonography, attenuation due to the viscosity of the medium limits the available imaging depth, and strong reflection and scattering from hard tissue, such as bone, render biological diagnosis very difficult. In order to resolve these problems, the feasibility of low-frequency (LF) parametric ultrasound imaging with high directivity was explored in the present study. A pulse compression technique was applied to chirp-modulated parametric ultrasound waves in the frequency band of 100-500 kHz generated from modulated primary ultrasound waves with a center frequency of 2...
April 23, 2018: Ultrasonics
https://www.readbyqxmd.com/read/29735505/osteitis-fibrosa-cystica-masquerading-as-bone-neoplasm
#20
Vishnu Vardhan Garla, Israh Akhtar, Sohail Salim, Angela Subauste
A 50-year-old female patient with no significant medical history presented with left knee pain. Radiographs of the knee showed a circumferential swelling of the distal femur suggestive of neoplasia. Further evaluation revealed multiple lesions in the left iliac bone and proximal femur. Biopsy was suggestive of a reparative granuloma or an aneurysmal bone cyst. Laboratory assessment showed hypercalcaemia and elevated parathyroid hormone consistent with severe primary hyperparathyroidism. Osseous survey was significant for salt and pepper appearance of the skull...
May 7, 2018: BMJ Case Reports
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