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https://www.readbyqxmd.com/read/27926652/hysteroscopic-sterilization-with-essure-summary-of-the-u-s-food-and-drug-administration-actions-and-policy-implications-for-postmarketing-surveillance
#1
Jessica R Walter, Comeron W Ghobadi, Emily Hayman, Shuai Xu
In September 2015, the U.S. Food and Drug Administration (FDA) convened a meeting of the Obstetrics and Gynecology Advisory Board Committee to address the sudden increase of patient-reported adverse events surrounding Essure, a Class III device offering a less invasive method for permanent female sterilization. After a review of the premarketing and postmarketing data and existing scientific literature, the FDA concluded there was insufficient evidence to remove the device from the market. However, the FDA did release a new guidance document requiring a black box warning for the device and ordered a new postmarketing study comparing Essure's safety and efficacy with laparoscopic tubal sterilization...
December 2, 2016: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/27925871/no-signal-intensity-increase-in-the-dentate-nucleus-on-unenhanced-t1-weighted-mr-images-after-more-than-20-serial-injections-of-macrocyclic-gadolinium-based-contrast-agents
#2
Alexander Radbruch, Robert Haase, Pascal J Kieslich, Lukas D Weberling, Philipp Kickingereder, Wolfgang Wick, Heinz-Peter Schlemmer, Martin Bendszus
Purpose To determine the effect of more than 20 serial injections of macrocyclic gadolinium-based contrast agents (GBCAs) on the signal intensity (SI) of the dentate nucleus (DN) on unenhanced T1-weighted magnetic resonance (MR) images. Materials and Methods In this retrospective, institutional review board-approved study, 33 patients who underwent at least 20 consecutive MR imaging examinations (plus an additional MR imaging for reference) with the exclusive use of macrocyclic GBCAs gadoterate meglumine and gadobutrol were analyzed...
December 7, 2016: Radiology
https://www.readbyqxmd.com/read/27925832/twitter-as-a-tool-for-health-research-a-systematic-review
#3
Lauren Sinnenberg, Alison M Buttenheim, Kevin Padrez, Christina Mancheno, Lyle Ungar, Raina M Merchant
BACKGROUND: Researchers have used traditional databases to study public health for decades. Less is known about the use of social media data sources, such as Twitter, for this purpose. OBJECTIVES: To systematically review the use of Twitter in health research, define a taxonomy to describe Twitter use, and characterize the current state of Twitter in health research. SEARCH METHODS: We performed a literature search in PubMed, Embase, Web of Science, Google Scholar, and CINAHL through September 2015...
January 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/27925701/effect-of-precompression-on-the-power-doppler-assessment-of-breast-lesion-vascularity
#4
Robert DeVita, Richard G Barr
OBJECTIVES: To evaluate the effect of precompression on power Doppler visualization of blood flow in breast masses. METHODS: This Institutional Review Board-approved and Health Insurance Portability and Accountability Act-compliant study evaluated 30 patients with breast masses (16 benign and 14 malignant) undergoing ultrasound-guided breast biopsy. A computational mathematics program was used to calculate the number of color pixels in a region of interest at various degrees of compression of the breast by the transducer...
November 30, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27925670/limited-abdominal-sonography-for-evaluation-of-children-with-right-lower-quadrant-pain
#5
Martha M Munden, Shannon Wai, Michael C DiStefano, Wei Zhang
OBJECTIVES: To determine whether a complete abdominal sonographic examination is necessary in the evaluation of children with right lower quadrant pain that is suspicious for appendicitis in the emergency department and whether performing a limited, more-focused study would miss clinically important disease. METHODS: With Institutional Review Board approval, a retrospective study was performed of 704 patients, from ages 5-19 years, presenting to the emergency department with right lower quadrant pain that was suspicious for appendicitis who underwent a complete abdominal sonographic examination...
November 30, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27923745/retrospective-correction-of-bias-in-diffusion-tensor-imaging-arising-from-coil-combination-mode
#6
Ken Sakaie, Mark Lowe
PURPOSE: To quantify and retrospectively correct for systematic differences in diffusion tensor imaging (DTI) measurements due to differences in coil combination mode. BACKGROUND: Multi-channel coils are now standard among MRI systems. There are several options for combining signal from multiple coils during image reconstruction, including sum-of-squares (SOS) and adaptive combine (AC). This contribution examines the bias between SOS- and AC-derived measures of tissue microstructure and a strategy for limiting that bias...
December 3, 2016: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/27923216/efficacy-of-a-cellular-bone-allograft-for-foot-and-ankle-arthrodesis-and-revision-nonunion-procedures
#7
Travis J Dekker, Peter White, Samuel B Adams
BACKGROUND: Bone graft substitutes are often required in patients at risk for nonunion, and therefore, an allograft that most closely mimics an autograft is highly sought after. This study explored the utility and efficacy of a cellular bone allograft used for foot and ankle arthrodesis and revision nonunion procedures in a patient population at risk for nonunion. METHODS: An institutional review board-approved retrospective review of consecutive patients who underwent arthrodesis and revision nonunion procedures with a cellular bone allograft was performed at a single academic institution...
October 23, 2016: Foot & Ankle International
https://www.readbyqxmd.com/read/27922990/robotically-assisted-thoracic-surgery-proposed-guidelines-for-privileging-and-credentialing
#8
Faiz Y Bhora, Adnan M Al-Ayoubi, Sadiq S Rehmani, Craig M Forleiter, Wissam N Raad, Scott G Belsley
OBJECTIVE: Increased use of robotically assisted thoracic surgery (RATS) necessitates effective credentialing guidelines to ensure safe outcomes. We provide a stepwise algorithm for granting privileges and credentials in RATS. This algorithm reflects graduated responsibility and complexity of the surgical procedures performed. Furthermore, it takes into account volume, outcomes, surgeon's competency, and appropriateness of robot usage. METHODS: We performed a literature review for available strategies to grant privileges and credentials for implementing robotic surgery...
December 5, 2016: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/27922974/training-and-validating-a-deep-convolutional-neural-network-for-computer-aided-detection-and-classification-of-abnormalities-on-frontal-chest-radiographs
#9
Mark Cicero, Alexander Bilbily, Errol Colak, Tim Dowdell, Bruce Gray, Kuhan Perampaladas, Joseph Barfett
OBJECTIVES: Convolutional neural networks (CNNs) are a subtype of artificial neural network that have shown strong performance in computer vision tasks including image classification. To date, there has been limited application of CNNs to chest radiographs, the most frequently performed medical imaging study. We hypothesize CNNs can learn to classify frontal chest radiographs according to common findings from a sufficiently large data set. MATERIALS AND METHODS: Our institution's research ethics board approved a single-center retrospective review of 35,038 adult posterior-anterior chest radiographs and final reports performed between 2005 and 2015 (56% men, average age of 56, patient type: 24% inpatient, 39% outpatient, 37% emergency department) with a waiver for informed consent...
December 5, 2016: Investigative Radiology
https://www.readbyqxmd.com/read/27922861/pet-mr-outperforms-pet-ct-in-suspected-occult-tumors
#10
Tetsuro Sekine, Felipe de Galiza Barbosa, Bert-Ram Sah, Cäcilia E Mader, Gaspar Delso, Irene A Burger, Paul Stolzmann, Edwin E Ter Voert, Gustav K von Schulthess, Patrick Veit-Haibach, Martin W Huellner
BACKGROUND: To compare the diagnostic accuracy of PET/MR and PET/CT in patients with suspected occult primary tumors. METHODS: This prospective study was approved by the institutional review board. Sequential PET/CT-MR was performed in 43 patients (22 male subjects; median age, 58 years; range, 20-86 years) referred for suspected occult primary tumors. Patients were assessed with PET/CT and PET/MR for the presence of a primary tumor, lymph node metastases, and distant metastases...
December 3, 2016: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/27920496/fabrication-of-anti-vitiligo-ointment-containing-psoralea-corylifolia-in-vitro-and-in-vivo-characterization
#11
Irshad Hussain, Nisar Hussain, Abdul Manan, Abdur Rashid, Barkat Khan, Sattar Bakhsh
BACKGROUND: Vitiligo is a repugnant and odious dermatological malady of the time. It has an detrimental impact on the pigmentation of the human skin as a result of the destruction of cutaneous melanocytes. It affects 1%-2% of the population worldwide. Different therapeutic regimens have been deployed to treat vitiligo, but none of them could stand alone to be stated as a perfect cure. Recently, a change has been observed through novel experimental-designed optimization leading to the development of an anti-vitiligo ointment containing Psoralea corylifolia (PC) seed powder...
2016: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/27920266/variability-of-ponto-cerebellar-fibers-by-diffusion-tensor-imaging-in-diverse-brain-malformations
#12
Nancy K Rollins, Timothy N Booth, Maria H Chahrour
To describe pontine axonal anomalies across diverse brain malformations. Institutional review board-approved review of magnetic resonance imaging (MRI) and genetic testing of 31 children with brain malformations and abnormal pons by diffusion tensor imaging. Anomalous dorsal pontocerebellar tracts were seen in mid-hindbrain anomalies and in diffuse malformations of cortical development including lissencephaly, gyral disorganization with dysplastic basal ganglia, presumed congenital fibrosis of extraocular muscles type 3, and in callosal agenesis without malformations of cortical development...
December 5, 2016: Journal of Child Neurology
https://www.readbyqxmd.com/read/27919878/pharmacy-residency-training-measured-through-a-standardized-knowledge-test
#13
Amy N Thompson, Brian P McKinzie, Jason S Haney, Jean M Nappi, Nicole Pilch
PURPOSE: The use of a standardized knowledge test to assess postgraduate year 1 (PGY1) pharmacy residency training was evaluated. METHODS: This was a retrospective review of a prospectively administered exam. A bank of questions was developed by preceptors from each of the core rotation disciplines: general medicine (including ambulatory care and oncology), pediatrics, critical care (including transplantation), drug information, operations, practice management, and psychiatry...
December 15, 2016: American Journal of Health-system Pharmacy: AJHP
https://www.readbyqxmd.com/read/27918708/patient-specific-hip-fracture-strength-assessment-with-microstructural-mr-imaging-based-finite-element-modeling
#14
Chamith S Rajapakse, Alexandra Hotca, Benjamin T Newman, Austin Ramme, Shaleen Vira, Elizabeth A Kobe, Rhiannon Miller, Stephen Honig, Gregory Chang
Purpose To describe a nonlinear finite element analysis method by using magnetic resonance (MR) images for the assessment of the mechanical competence of the hip and to demonstrate the reproducibility of the tool. Materials and Methods This prospective study received institutional review board approval and fully complied with HIPAA regulations for patient data. Written informed consent was obtained from all subjects. A nonlinear finite element analysis method was developed to estimate mechanical parameters that relate to hip fracture resistance by using MR images...
December 2, 2016: Radiology
https://www.readbyqxmd.com/read/27918707/national-performance-benchmarks-for-modern-screening-digital-mammography-update-from-the-breast-cancer-surveillance-consortium
#15
Constance D Lehman, Robert F Arao, Brian L Sprague, Janie M Lee, Diana S M Buist, Karla Kerlikowske, Louise M Henderson, Tracy Onega, Anna N A Tosteson, Garth H Rauscher, Diana L Miglioretti
Purpose To establish performance benchmarks for modern screening digital mammography and assess performance trends over time in U.S. community practice. Materials and Methods This HIPAA-compliant, institutional review board-approved study measured the performance of digital screening mammography interpreted by 359 radiologists across 95 facilities in six Breast Cancer Surveillance Consortium (BCSC) registries. The study included 1 682 504 digital screening mammograms performed between 2007 and 2013 in 792 808 women...
December 5, 2016: Radiology
https://www.readbyqxmd.com/read/27918075/value-of-the-strain-ratio-on-ultrasonic-elastography-for-differentiation-of-benign-and-malignant-soft-tissue-tumors
#16
Seok Hahn, Young Han Lee, Seung Hyun Lee, Jin-Suck Suh
OBJECTIVES: The purpose of this study was to evaluate whether the strain ratio provides additional value to conventional visual elasticity scores in the differentiation of benign and malignant soft tissue tumors by ultrasonic elastography. METHODS: The Institutional Review Board approved the protocol of this retrospective review. Seventy-three patients who underwent elastography and had a soft tissue mass pathologically confirmed by ultrasound-guided core biopsy or surgical excision were enrolled from April 2012 through October 2014...
December 5, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27916596/mastalgia-imaging-work-up-appropriateness
#17
Alison L Chetlen, Megha Madhukar Kapoor, Meredith Ranzenbach Watts
RATIONALE AND OBJECTIVES: Radiologists frequently image women with the sole complaint of mastalgia (breast pain). We hypothesized that whereas the vast majority of women ultimately have no imaging explanation for their breast pain, a small percentage of patients may have a correlative imaging finding and confirm the current American College of Radiology Appropriateness Criteria recommendations. MATERIALS AND METHODS: In this Health Insurance Portability and Accountability Act (HIPAA)-compliant, institutional review board-approved retrospective review, we evaluated 236 women between the ages of 18 and 83 years who presented to our Breast Care Center in 2013 with the sole complaint of breast pain or tenderness...
December 1, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27916593/clinical-application-of-dual-energy-spectral-computed-tomography-in-detecting-cholesterol-gallstones-from-surrounding-bile
#18
Chuang-Bo Yang, Shuang Zhang, Yong-Jun Jia, Hai-Feng Duan, Guang-Ming Ma, Xi-Rong Zhang, Yong Yu, Tai-Ping He
RATIONALE AND OBJECTIVE: This study aimed to investigate the clinical value of spectral computed tomography (CT) in the detection of cholesterol gallstones from surrounding bile. MATERIALS AND METHODS: This study was approved by the institutional review board. The unenhanced spectral CT data of 24 patients who had surgically confirmed cholesterol gallstones were analyzed. Lipid concentrations and CT numbers were measured from fat-based material decomposition image and virtual monochromatic image sets (40-140 keV), respectively...
December 1, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27916436/utility-of-a-multidisciplinary-tumor-board-in-the-management-of-pancreatic-and-upper-gastrointestinal-diseases-an-observational-study
#19
David G Brauer, Matthew S Strand, Dominic E Sanford, Vladimir M Kushnir, Kian-Huat Lim, Daniel K Mullady, Benjamin R Tan, Andrea Wang-Gillam, Ashley E Morton, Marianna B Ruzinova, Parag J Parikh, Vamsi R Narra, Kathryn J Fowler, Majella B Doyle, William C Chapman, Steven S Strasberg, William G Hawkins, Ryan C Fields
BACKGROUND & OBJECTIVES: Multidisciplinary tumor boards (MDTBs) are frequently employed in cancer centers but their value has been debated. We reviewed the decision-making process and resource utilization of our MDTB to assess its utility in the management of pancreatic and upper gastrointestinal tract conditions. METHODS: A prospectively-collected database was reviewed over a 12-month period. The primary outcome was change in management plan as a result of case discussion...
December 1, 2016: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/27916354/accurate-assessment-of-bowel-length-the-method-of-measurement-matters
#20
Eleanor D Muise, John J Tackett, Kevin A Callender, Neeru Gandotra, Michaela C Bamdad, Robert A Cowles
PURPOSE: Small intestinal length has prognostic significance for patients with short bowel syndrome, and accurate measurement of Roux-en-Y limbs is considered important. The flexible elasticity of bowel makes its measurement highly subjective, yet a recommended method for intestinal measurement allowing accurate comparisons between surgeons remains undefined. Measurement of intestinal length has been described, but no comparison of the fidelity of measurement technique has been made. We hypothesized that silk suture and umbilical tape would yield the most consistent measurements...
November 2016: Journal of Surgical Research
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