keyword
MENU ▼
Read by QxMD icon Read
search

bone scan

keyword
https://www.readbyqxmd.com/read/28930942/surgical-residents-interpretation-of-diagnostic-radiologic-imaging-in-the-traumatically-injured-patient
#1
Elias Fakhoury, Daria Abolghasemi, Justin McKinney, Alena Naumova, Scott Wessner, Osama Elsawy, Jamshed Zuberi, Robert V Madlinger
BACKGROUND: Senior surgical residents are of paramount importance in directing further therapeutic modalities based on their interpretation of critical diagnostic imaging. We propose that senior surgical residents are proficient with interpreting radiologic imaging studies in the trauma patient. METHODS: A prospective cohort study was performed comparing surgery resident interpretations of computerized tomography (CT) scans of the head, maxillofacial bones, spine (cervical, thoracic, lumbar), chest, abdomen, pelvis, and chest X-rays versus final radiologists' reports at a level II trauma center from September 2014 to May 2015...
September 20, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28929525/diabetes-and-deficits-in-cortical-bone-density-microarchitecture-and-bone-size-framingham-hr-pqct-study
#2
Elizabeth J Samelson, Serkalem Demissie, L Adrienne Cupples, Xiaochun Zhang, Hanfei Xu, Ching-Ti Liu, Steven K Boyd, Robert R McLean, Kerry E Broe, Douglas P Kiel, Mary L Bouxsein
Older adults with type 2 diabetes (T2D) tend to have normal or greater areal bone mineral density (aBMD), as measured by DXA, than those who do not have diabetes (non-T2D). Yet risk of fracture is higher in T2D, including 40% to 50% increased hip fracture risk. We used HR-pQCT to investigate structural mechanisms underlying skeletal fragility in T2D. We compared cortical and trabecular bone microarchitecture, density, bone area, and strength in T2D and non-T2D. In secondary analyses we evaluated whether associations between T2D and bone measures differed according to prior fracture, sex, and obesity...
September 20, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28928818/the-value-of-computer-assisted-navigation-for-bone-reconstruction-after-tumor-resection
#3
Xuejun Peng, Fengping Wang, Jing Su
This study was designed to evaluate the use of computer-assisted navigation with computed tomography (CT) images for bone reconstruction after resection in malignant bone tumor treatment. Forty-five patients with malignant bone tumors were recruited for this study. CT scan images in a computer-assisted navigation system were used to assist during the osteotomy, the pairing with allografts, and the monitoring of the allograft and joint lines to perform joint reconstruction. Our results show that osteotomy and allograft pairing were successful in all patients...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927782/development-and-internal-validation-of-prediction-models-for-biochemical-failure-and-composite-failure-after-focal-salvage-high-intensity-focused-ultrasound-for-local-radiorecurrent-prostate-cancer-presentation-of-risk-scores-for-individual-patient-prognoses
#4
Max Peters, Abi Kanthabalan, Taimur T Shah, Neil McCartan, Caroline M Moore, Manit Arya, Jochem R van der Voort van Zyp, Marinus A Moerland, Richard G Hindley, Mark Emberton, Hashim U Ahmed
PURPOSE: Patient selection for focal salvage remains difficult. Therefore, we developed and internally validated prediction models for biochemical failure (BF) and a composite endpoint (CE) following focal salvage high intensity focused ultrasound (HIFU) for radiorecurrent prostate cancer. MATERIALS AND METHODS: A prospective HIFU registry identified 150 cases (November 2006-August 2015). Recurrence was assessed with multiparametric magnetic resonance imaging (MRI) combined with template prostate mapping biopsies, targeted biopsies, or systematic transrectal ultrasound-guided biopsies...
September 15, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28927581/differential-aging-signals-in-abdominal-ct-scans
#5
Nikita V Orlov, Sokratis Makrogiannis, Luigi Ferrucci, Ilya G Goldberg
RATIONALE AND OBJECTIVES: Changes in the composition of body tissues are major aging phenotypes, but they have been difficult to study in depth. Here we describe age-related change in abdominal tissues observable in computed tomography (CT) scans. We used pattern recognition and machine learning to detect and quantify these changes in a model-agnostic fashion. MATERIALS AND METHODS: CT scans of abdominal L4 sections were obtained from Baltimore Longitudinal Study of Aging (BLSA) participants...
September 15, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28926388/opportunistic-use-of-ct-imaging-for-osteoporosis-screening-and-bone-density-assessment-a-qualitative-systematic-review
#6
Elizabeth B Gausden, Benedict U Nwachukwu, Joseph J Schreiber, Dean G Lorich, Joseph M Lane
BACKGROUND: The purpose of this study was to determine the clinical opportunities for the use of computed tomography (CT) imaging for inferring bone quality and to critically analyze the correlation between dual x-ray absorptiometry (DXA) and diagnostic CT as reported in the literature. METHODS: A systematic review of the MEDLINE database was performed in February 2016 using the PubMed interface. The inclusion criteria were English language, studies performed using living human subjects, studies pertaining to orthopaedics, use of conventional diagnostic CT scans, studies that measured cancellous bone, and studies that reported Hounsfield unit (HU) measurements directly rather than a computed bone mineral density...
September 20, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28925823/deep-learning-mr-imaging-based-attenuation-correction-for-pet-mr-imaging
#7
Fang Liu, Hyungseok Jang, Richard Kijowski, Tyler Bradshaw, Alan B McMillan
Purpose To develop and evaluate the feasibility of deep learning approaches for magnetic resonance (MR) imaging-based attenuation correction (AC) (termed deep MRAC) in brain positron emission tomography (PET)/MR imaging. Materials and Methods A PET/MR imaging AC pipeline was built by using a deep learning approach to generate pseudo computed tomographic (CT) scans from MR images. A deep convolutional auto-encoder network was trained to identify air, bone, and soft tissue in volumetric head MR images coregistered to CT data for training...
September 19, 2017: Radiology
https://www.readbyqxmd.com/read/28925790/morphological-variation-of-the-caudal-fossa-of-domestic-cat-skulls-assessed-with-computed-tomography-and-geometric-morphometrics-analysis
#8
Caroline R Gordon, Thomas W Marchant, Joanna Lodzinska, Jeffery J Schoenebeck, Tobias Schwarz
Objectives This study aimed to investigate differences and demonstrate a normal range of morphological variation of the caudal fossa of the cranium of domestic cats. Methods CT scans of 32 domestic cat heads of 11 breeds were included. Isosurfaces from skulls were characterised through three-dimensional geometric morphometrics using geographical landmarks placed on the internal surface of the caudal fossa and foramen magnum. Raw data was transformed with a Procrustes fit and coordinate covariance was analysed by principal components to establish breed- and sex-level differences...
September 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/28925678/dual-functionalized-graphene-oxide-based-sirna-delivery-system-for-implant-surface-bio-modification-with-enhanced-osteogenesis
#9
Li Zhang, Qing Zhou, Wen Song, Kaimin Wu, Yumei Zhang, Yimin Zhao
Surface functionalization by siRNA is a novel strategy for improved implant osseointegration. Gene delivery system with safety and high transfection activity is a crucial factor for siRNA-functionalized implant to exert its biological function. To this end, polyethylene glycol (PEG) and polyethylenimine (PEI) dual-functionalized graphene oxide (GO) (nGO-PEG-PEI) may present a promising siRNA vector. In this study, nano-sized nGO-PEG-PEI was prepared and optimized for siRNA delivery. Titania nanotubes (NT) fabricated by anodic oxidation were bio-modified with nGO-PEG-PEI/siRNA by cathodic electrodeposition, designated as NT-GPP/siRNA...
September 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28924368/the-effects-of-perioperative-anesthesia-and-analgesia-on-immune-function-in-patients-undergoing-breast-cancer-resection-a-prospective-randomized-study
#10
Jin Sun Cho, Mi-Hyang Lee, Seung Il Kim, Seho Park, Hyung Seok Park, Ein Oh, Jong Ho Lee, Bon-Nyeo Koo
Introduction: Perioperative anesthesia and analgesia exacerbate immunosuppression in immunocompromised cancer patients. The natural killer (NK) cell is a critical part of anti-tumor immunity. We compared the effects of two different anesthesia and analgesia methods on the NK cell cytotoxicity (NKCC) in patients undergoing breast cancer surgery. Methods: Fifty patients undergoing breast cancer resection were randomly assigned to receive propofol-remifentanil anesthesia with postoperative ketorolac analgesia (Propofol-ketorolac groups) or sevoflurane-remifentanil anesthesia with postoperative fentanyl analgesia (Sevoflurane-fentanyl group)...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/28924349/autophagy-promotes-degradation-of-polyethyleneimine-alginate-nanoparticles-in-endothelial-progenitor-cells
#11
Guo-Dong Wang, Yu-Zhen Tan, Hai-Jie Wang, Pei Zhou
Polyethyleneimine (PEI)-alginate (Alg) nanoparticle (NP) is a safe and effective vector for delivery of siRNA or DNA. Recent studies suggest that autophagy is related to cytotoxicity of PEI NPs. However, contribution of autophagy to degradation of PEI-Alg NPs remains unknown. CD34(+)VEGFR-3(+) endothelial progenitor cells isolated from rat bone marrow were treated with 25 kDa branched PEI modified by Alg. After treatment with the NPs, morphological changes and distribution of the NPs in the cells were examined with scanning and transmission electron microscopies...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28923411/hormone-replacement-therapy-after-treatment-for-cervical-cancer-are-we-adhering-to-standard-of-care
#12
Lisa A Rauh, Aaron F Pannone, Leigh A Cantrell
OBJECTIVE: The aim of this study was to assess hormone replacement therapy (HRT) and bone care health maintenance practices for cervical cancer patients with iatrogenic menopause, and, secondarily, to investigate the potential impact of specific demographic and clinical factors. METHODS: Women diagnosed with iatrogenic menopause due to cervical cancer treatment between January 1, 2005 and December 31, 2015 were identified from the University of Virginia's tumor registry...
September 16, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28921824/characterization-of-lacquer-films-from-the-middle-and-late-chinese-warring-states-period-476-221bc
#13
P J Jin, Y L Hu, Z B Ke
The famous lacquer wares excavated from the Jiuliandun Tombs of the middle and late Warring States period (476-221 BC) were analyzed using scanning electron microscopy/energy as well as dispersive X-ray spectrometry (SEM/EDS), Raman spectroscopy (RS), optical microscopy (OM), and X-ray diffraction (XRD). The results showed a multilayer structure in the lacquer film, including a Qihui layer (a layer made of lacquer and various plasters), undercoat layer (or finishing coat) and colored paint layer mixed with various inorganic particles, such as quartz (SiO2 ) and hydroxyapatite [Ca5 (PO4 )3 (OH)], as fillers in the Qihui layers or orpiment (As2 S3 ) and cinnabar (HgS), which were used as a yellow or red pigment, respectively...
September 18, 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/28921128/precision-of-bone-density-and-micro-architectural-properties-at-the-distal-radius-and-tibia-in-children-an-hr-pqct-study
#14
C E Kawalilak, A T Bunyamin, K M Björkman, J D Johnston, S A Kontulainen
Precision errors need to be known when monitoring bone micro-architecture in children with HR-pQCT. Precision errors for trabecular bone micro-architecture ranged from 1 to 8% when using the standard evaluation at the radius and tibia. Precision errors for cortical bone micro-architecture ranged from 1 to 11% when using the advanced cortical evaluation. INTRODUCTION: Our objective was to define HR-pQCT precision errors (CV%RMS) and least significant changes (LSCs) at the distal radius and tibia in children using the standard evaluation and the advanced cortical evaluation...
September 18, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28921041/stabilization-of-scaphoid-type-b2-fractures-with-one-or-two-headless-compression-screws
#15
S Quadlbauer, T Beer, Ch Pezzei, J Jurkowitsch, A Tichy, T Hausner, M Leixnering
INTRODUCTION: Fractures of the scaphoid account for the most commonly injured carpal bone. Minimally displaced fractures of the waist will heal in 85-90% when using a below elbow cast. However, fractures with displacement have a higher risk for nonunion. Therefore, open reduction and fixation with headless compression screws (HCS) have become the preferred method of treatment. The aim of this study was to compare the radiological and clinical outcome of unstable scaphoid B2 type fractures, stabilized using one or two headless compression screws...
September 18, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28919925/in-vitro-evaluation-of-polylactic-acid-pla-manufactured-by-fused-deposition-modeling
#16
Matthias C Wurm, Tobias Möst, Bastian Bergauer, Dominik Rietzel, Friedrich Wilhelm Neukam, Sandra C Cifuentes, Cornelius von Wilmowsky
BACKGROUND: With additive manufacturing (AM) individual and biocompatible implants can be generated by using suitable materials. The aim of this study was to investigate the biological effects of polylactic acid (PLA) manufactured by Fused Deposition Modeling (FDM) on osteoblasts in vitro according to European Norm / International Organization for Standardization 10,993-5. METHOD: Human osteoblasts (hFOB 1.19) were seeded onto PLA samples produced by FDM and investigated for cell viability by fluorescence staining after 24 h...
2017: Journal of Biological Engineering
https://www.readbyqxmd.com/read/28919510/magnesium-mg-based-interference-screws-developed-for-promoting-tendon-graft-incorporation-in-bone-tunnel-in-rabbits
#17
Jiali Wang, Jiankun Xu, Bin Song, Dick Hokiu Chow, Patrick Shu-Hang Yung, Ling Qin
How to enhance tendon graft incorporation into bone tunnels for achieving satisfactory healing outcomes in patients with anterior cruciate ligament reconstruction (ACLR) is one of the most challenging clinical problems in orthopaedic sports medicine. Several studies have recently reported the beneficial effects of Mg implants in bone fracture healing, indicating the use potential of Mg devices in promoting the tendon graft osteointegration. Here, we developed an innovative Mg-based interference screws for fixation of the tendon graft in rabbits underwent ACLR and investigated the biological role of Mg-based implants in the graft healing...
September 14, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28919498/accelerated-return-to-sport-after-acl-reconstruction-and-early-knee-osteoarthritis-features-at-1-year-an-exploratory-study
#18
Adam G Culvenor, Brooke E Patterson, Ali Guermazi, Hayden G Morris, Timothy S Whitehead, Kay M Crossley
BACKGROUND: A timely return to competitive sport is a primary goal of anterior cruciate ligament reconstruction (ACLR). It is not known if an accelerated return-to-sport increases the risk of early-onset knee osteoarthritis (KOA). OBJECTIVE: To determine whether an accelerated return-to-sport post-ACLR (i.e., <10 months) is associated with increased odds of early KOA features on MRI 1-year post-surgery, and to evaluate the relationship between an accelerated return-to-sport and early KOA features stratified by type of ACL injury (isolated or concurrent chondral/meniscal injury) and lower-limb function (good or poor)...
September 14, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28918187/surface-modification-of-titanium-substrates-for-enhanced-osteogenetic-and-antibacterial-properties
#19
Peng Liu, Yansha Hao, Yongchun Zhao, Zhang Yuan, Yao Ding, Kaiyong Cai
The insufficient osseointegration and bacterial infection of titanium and its alloys remain the key challenges in their clinic applications, which may result in failure implantation. To improve osteogenetic and antibacterial properties, TiO2 nanotube arrays were fabricated on titanium substrates for loading of antibacterial drug. Then, TiO2 nanotube arrays were covered with chitosan/sodium alginate multilayer films. The successful construction of this system was verified via scanning electron microscopy and contact angle measurement...
August 26, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28917880/intercalated-chitosan-hydroxyapatite-nanocomposites-promising-materials-for-bone-tissue-engineering-applications
#20
Muhammad Anwaar Nazeer, Emel Yilgör, Iskender Yilgör
Preparation and characterization of chitosan/hydroxyapatite (CS/HA) nanocomposites displaying an intercalated structure is reported. Hydroxyapatite was synthesized through sol-gel process. Formic acid was introduced as a new solvent to obtain stable dispersions of nano-sized HA particles in polymer solution. CS/HA dispersions with HA contents of 5, 10 and 20% by weight were prepared. Self-assembling of HA nanoparticles during the drying of the solvent cast films led to the formation of homogeneous CS/HA nanocomposites...
November 1, 2017: Carbohydrate Polymers
keyword
keyword
64377
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"