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https://www.readbyqxmd.com/read/27918708/patient-specific-hip-fracture-strength-assessment-with-microstructural-mr-imaging-based-finite-element-modeling
#1
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
#2
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/27916596/mastalgia-imaging-work-up-appropriateness
#3
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/27896400/quantitative-assessment-of-the-supraspinatus-tendon-on-mri-using-t2-t2-mapping-and-shear-wave-ultrasound-elastography-a-pilot-study
#4
Konstantin Krepkin, Mary Bruno, José G Raya, Ronald S Adler, Soterios Gyftopoulos
OBJECTIVE: To determine whether there is an association between T2/T2* mapping and supraspinatus tendon mechanical properties as assessed by shear-wave ultrasound elastography (SWE). MATERIALS AND METHODS: This HIPAA-compliant prospective pilot study received approval from our hospital's institutional review board. Eight patients (3 males/5 females; age range 44-72 years) and nine shoulders underwent conventional shoulder MRI, T2/T2* mapping on a 3-T scanner, and SWE...
November 28, 2016: Skeletal Radiology
https://www.readbyqxmd.com/read/27896386/dual-energy-ct-angiography-pros-and-cons-of-dual-energy-metal-artifact-reduction-algorithm-in-patients-after-endovascular-aortic-repair
#5
Johannes Boos, Jieming Fang, Benedikt H Heidinger, Vassilios Raptopoulos, Olga R Brook
PURPOSE: To evaluate the value of metal artifact reduction (MAR) post-processing and iodine MD images in fast kV-switching dual-energy computed tomography (DECT) in patients after endovascular aortic repair (EVAR). MATERIALS AND METHODS: Twenty-four consecutive EVAR patients (age 76 ± 9 years, 7/24 (29%) with coils, 9/24 (37.5%) with 10 endoleaks) who underwent DECT angiography were included in this HIPAA-compliant, IRB-approved retrospective study. Monochromatic reconstructions included 55, 60, 65, 70, and 75 keV with and without MAR and iodine MD images...
November 28, 2016: Abdominal Radiology
https://www.readbyqxmd.com/read/27875105/renal-cell-carcinoma-comparison-of-renal-nephrometry-and-padua-scores-with-maximum-tumor-diameter-for-prediction-of-local-recurrence-after-thermal-ablation
#6
Aaron W P Maxwell, Grayson L Baird, Jason D Iannuccilli, William W Mayo-Smith, Damian E Dupuy
Purpose To evaluate the performance of the radius, exophytic or endophytic, nearness to collecting system or sinus, anterior or posterior, and location relative to polar lines (RENAL) nephrometry and preoperative aspects and dimensions used for anatomic classification (PADUA) scoring systems and other tumor biometrics for prediction of local tumor recurrence in patients with renal cell carcinoma after thermal ablation. Materials and Methods This HIPAA-compliant study was performed with a waiver of informed consent after institutional review board approval was obtained...
November 22, 2016: Radiology
https://www.readbyqxmd.com/read/27875104/ct-guided-native-medical-renal-biopsy-cortical-tangential-versus-non-tangential-approaches-a-comparison-of-efficacy-and-safety
#7
Bo Liu, Matthew O'Dell, Miguel Flores, Joseph Limback, Melissa Kendall, Julie Pepe, Jeremy R Burt, Francisco Contreras, Andrew R Lewis, Thomas J Ward
Purpose To review a single-center experience with the cortical tangential approach during computed tomography (CT)-guided native medical renal biopsy and to evaluate its efficacy and safety compared with those of a non-cortical tangential approach. Materials and Methods This retrospective study received institutional review board approval, with a waiver of the HIPAA requirement for informed consent. The number of cores, glomeruli, and complications were reviewed in 431 CT-guided medical renal biopsies performed between July 2007 and September 2015...
November 22, 2016: Radiology
https://www.readbyqxmd.com/read/27867450/preserving-patient-privacy-when-sharing-same-disease-data
#8
Xiaoping Liu, Xiao-Bai Li, Luvai Motiwalla, Wenjun Li, Hua Zheng, Patricia D Franklin
Medical and health data are often collected for studying a specific disease. For such same-disease microdata, a privacy disclosure occurs as long as an individual is known to be in the microdata. Individuals in same-disease microdata are thus subject to higher disclosure risk than those in microdata with different diseases. This important problem has been overlooked in data-privacy research and practice, and no prior study has addressed this problem. In this study, we analyze the disclosure risk for the individuals in same-disease microdata and propose a new metric that is appropriate for measuring disclosure risk in this situation...
October 2016: ACM Journal of Data and Information Quality
https://www.readbyqxmd.com/read/27864008/renal-plasma-flow-rpf-measured-with-multiple-inversion-time-arterial-spin-labeling-asl-and-tracer-kinetic-analysis-validation-against-a-dynamic-contrast-enhancement-method
#9
Christopher C Conlin, Niels Oesingmann, Bradley Bolster, Yufeng Huang, Vivian S Lee, Jeff L Zhang
PURPOSE: To propose and validate a method for accurately quantifying renal plasma flow (RPF) with arterial spin labeling (ASL). MATERIALS AND METHODS: The proposed method employs a tracer-kinetic approach and derives perfusion from the slope of the ASL difference signal sampled at multiple inversion-times (TIs). To validate the method's accuracy, we performed a HIPAA-compliant and IRB-approved study with 15 subjects (9 male, 6 female; age range 24-73) to compare RPF estimates obtained from ASL to those from a more established dynamic contrast-enhanced (DCE) MRI method...
November 15, 2016: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/27861404/the-latino-eyelid-anthropometric-analysis-of-a-spectrum-of-findings
#10
Constance L Fry, Thomas C Naugle, Shelley A Cole, Jonathan Gelfond, Geetha Chittoor, Angeline F Mariani, Martin W Goros, Barrett G Haik, Venkata Saroja Voruganti
PURPOSE: Published anthropometric measurements of the Latino eyelid are limited. This study describes features spanning the morphologic range from non-Latino whites to East Asians in the spectrum of the Latino eyelid. METHODS: A cross-sectional study of 68 people (32 Latinos, 18 non-Latino whites, and 18 East Asians, ages 18-39), approved by the Institutional Review Board and HIPAA-compliant, was performed. Saliva samples determined genetic components. Indirect anthropometric measurements were performed with ImageJ software...
November 15, 2016: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27861111/diagnostic-performance-of-mr-elastography-and-vibration-controlled-transient-elastography-in-the-detection-of-hepatic-fibrosis-in-patients-with-severe-to-morbid-obesity
#11
Jun Chen, Meng Yin, Jayant A Talwalkar, Jennifer Oudry, Kevin J Glaser, Thomas C Smyrk, Véronique Miette, Laurent Sandrin, Richard L Ehman
Purpose To evaluate the diagnostic performance and examination success rate of magnetic resonance (MR) elastography and vibration-controlled transient elastography (VCTE) in the detection of hepatic fibrosis in patients with severe to morbid obesity. Materials and Methods This prospective and HIPAA-compliant study was approved by the institutional review board. A total of 111 patients (71 women, 40 men) participated. Written informed consent was obtained from all patients. Patients underwent MR elastography with two readers and VCTE with three observers to acquire liver stiffness measurements for liver fibrosis assessment...
November 18, 2016: Radiology
https://www.readbyqxmd.com/read/27861110/in-bore-3-t-mr-guided-transrectal-targeted-prostate-biopsy-prostate-imaging-reporting-and-data-system-version-2-based-diagnostic-performance-for-detection-of-prostate-cancer
#12
Nelly Tan, Wei-Chan Lin, Pooria Khoshnoodi, Nazanin H Asvadi, Jeffrey Yoshida, Daniel J A Margolis, David S K Lu, Holden Wu, Kyung Hyun Sung, David Y Lu, Jaioti Huang, Steven S Raman
Purpose To determine the diagnostic yield of in-bore 3-T magnetic resonance (MR) imaging-guided prostate biopsy and stratify performance according to Prostate Imaging Reporting and Data System (PI-RADS) versions 1 and 2. Materials and Methods This study was HIPAA compliant and institution review board approved. In-bore 3-T MR-guided prostate biopsy was performed in 134 targets in 106 men who (a) had not previously undergone prostate biopsy, (b) had prior negative biopsy findings with increased prostate-specific antigen (PSA) level, or (c) had a prior history of prostate cancer with increasing PSA level...
November 18, 2016: Radiology
https://www.readbyqxmd.com/read/27853357/feasibility-of-a-novel-mhealth-management-system-to-capture-and-improve-medication-adherence-among-adolescents-with-asthma
#13
Anna Cushing, Melissa P Manice, Andrew Ting, Michael K Parides
PURPOSE: Currently, 7.1 million children in the United States have asthma. Nonadherence to daily controller asthma medication is common, leading to more severe symptoms, overuse of rescue medication, and increased hospitalizations. The purpose of this study was to develop and evaluate the feasibility and acceptability of a novel mHealth management system composed of a sensored device, which is connected to mobile phone app that is designed to monitor and improve asthma medication adherence...
2016: Patient Preference and Adherence
https://www.readbyqxmd.com/read/27831830/imaging-biomarkers-of-tumor-response-in-neuroendocrine-liver-metastases-treated-with-transarterial-chemoembolization-can-enhancing-tumor-burden-of-the-whole-liver-help-predict-patient-survival
#14
Sonia Sahu, Ruediger Schernthaner, Roberto Ardon, Julius Chapiro, Yan Zhao, Jae Ho Sohn, Florian Fleckenstein, MingDe Lin, Jean-François Geschwind, Rafael Duran
Purpose To investigate whether whole-liver enhancing tumor burden [ETB] can serve as an imaging biomarker and help predict survival better than World Health Organization (WHO), Response Evaluation Criteria in Solid Tumors (RECIST), modified RECIST (mRECIST), and European Association for the Study of the Liver (EASL) methods in patients with multifocal, bilobar neuroendocrine liver metastases (NELM) after the first transarterial chemoembolization (TACE) procedure. Materials and Methods This HIPAA-compliant, institutional review board-approved retrospective study included 51 patients (mean age, 57...
November 10, 2016: Radiology
https://www.readbyqxmd.com/read/27809664/liver-surface-nodularity-score-allows-prediction-of-cirrhosis-decompensation-and-death
#15
Andrew D Smith, Kevin A Zand, Edward Florez, Reza Sirous, Darya Shlapak, Frederico Souza, Manohar Roda, Jason Bryan, Amit Vasanji, Michael Griswold, Seth T Lirette
Purpose To determine whether use of the liver surface nodularity (LSN) score, a quantitative biomarker derived from routine computed tomographic (CT) images, allows prediction of cirrhosis decompensation and death. Materials and Methods For this institutional review board-approved HIPAA-compliant retrospective study, adult patients with cirrhosis and Model for End-Stage Liver Disease (MELD) score within 3 months of initial liver CT imaging between January 3, 2006, and May 30, 2012, were identified from electronic medical records (n = 830)...
November 3, 2016: Radiology
https://www.readbyqxmd.com/read/27806923/it-s-time-for-innovation-in-the-health-insurance-portability-and-accountability-act-hipaa
#16
Karen Colorafi, Bryan Bailey
Whether it is the result of a tragic news story, a thoughtful commentary, or a segment on the entertainment networks, patient privacy rights are never far from the top of our minds. The Privacy and Security Rules contained in the Health Insurance Portability and Accountability Act of 1996 (HIPAA) represent a concerted effort to protect the privacy and security of the volumes of patient data generated by the health care system. However, the last twenty years has seen innovations and advancements in health information technology that were unimaginable at that time...
November 2, 2016: JMIR Medical Informatics
https://www.readbyqxmd.com/read/27797678/anorexia-nervosa-analysis-of-trabecular-texture-with-ct
#17
Azadeh Tabari, Martin Torriani, Karen K Miller, Anne Klibanski, Mannudeep K Kalra, Miriam A Bredella
Purpose To determine indexes of skeletal integrity by using computed tomographic (CT) trabecular texture analysis of the lumbar spine in patients with anorexia nervosa and normal-weight control subjects and to determine body composition predictors of trabecular texture. Materials and Methods This cross-sectional study was approved by the institutional review board and compliant with HIPAA. Written informed consent was obtained. The study included 30 women with anorexia nervosa (mean age ± standard deviation, 26 years ± 6) and 30 normal-weight age-matched women (control group)...
October 31, 2016: Radiology
https://www.readbyqxmd.com/read/27797677/diagnostic-performance-of-us-for-differentiating-perforated-from-nonperforated-pediatric-appendicitis-a-prospective-cohort-study
#18
Jennifer L Carpenter, Robert C Orth, Wei Zhang, Monica E Lopez, Kate L Mangona, R Paul Guillerman
Purpose To prospectively evaluate the diagnostic performance of ultrasonography (US) for differentiating perforated from nonperforated pediatric appendicitis and to investigate the association between specific US findings and perforation. Materials and Methods This HIPAA-compliant study had institutional review board approval, and the need for informed consent was waived. All abdominal US studies performed for suspected pediatric appendicitis at one institution from July 1, 2013, to July 9, 2014, were examined prospectively...
October 31, 2016: Radiology
https://www.readbyqxmd.com/read/27776665/image-quality-of-mean-temporal-arterial-and-mean-temporal-portal-venous-phase-images-calculated-from-low-dose-dynamic-volume-perfusion-ct-datasets-in-patients-with-hepatocellular-carcinoma-and-pancreatic-cancer
#19
X Wang, T Henzler, J Gawlitza, S Diehl, T Wilhelm, S O Schoenberg, Z Y Jin, H D Xue, A Smakic
PURPOSE: Dynamic volume perfusion CT (dVPCT) provides valuable information on tissue perfusion in patients with hepatocellular carcinoma (HCC) and pancreatic cancer. However, currently dVPCT is often performed in addition to conventional CT acquisitions due to the limited morphologic image quality of dose optimized dVPCT protocols. The aim of this study was to prospectively compare objective and subjective image quality, lesion detectability and radiation dose between mean temporal arterial (mTA) and mean temporal portal venous (mTPV) images calculated from low dose dynamic volume perfusion CT (dVPCT) datasets with linearly blended 120-kVp arterial and portal venous datasets in patients with HCC and pancreatic cancer...
November 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27771754/long-term-outcomes-of-percutaneous-lumbar-facet-synovial-cyst-rupture
#20
Ambrose J Huang, Stijn A Bos, Martin Torriani, F Joseph Simeone, Connie Y Chang, Stuart R Pomerantz, Miriam A Bredella
OBJECTIVE: To evaluate the therapeutic value, safety, and long-term clinical outcomes of percutaneous lumbar facet synovial cyst (LFSC) rupture. MATERIALS AND METHODS: Our study was institutional review board (IRB)-approved and Health Insurance Portability and Accountability Act (HIPAA)-compliant. The study group comprised 71 patients (44 women, mean age: 65 ± 17 years) who underwent CT- or fluoroscopy-guided percutaneous LFSC rupture. The technical success of LFSC rupture, the long-term clinical outcome, including repeat procedures or surgery, and imaging findings on MRI and CT were recorded...
October 22, 2016: Skeletal Radiology
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