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https://www.readbyqxmd.com/read/28212059/pediatric-chest-ct-diagnostic-reference-ranges-development-and-application
#1
Keith J Strauss, Marilyn J Goske, Alexander J Towbin, Debapriya Sengupta, Michael J Callahan, Kassa Darge, Daniel J Podberesky, Donald P Frush, Charles Maxfield, Sjirk J Westra, Jeffrey S Prince, Huimin Wu, Mythreyi Bhargavan-Chatfield
Purpose To determine diagnostic reference ranges on the basis of the size of a pediatric patient's chest and to develop a method to estimate computed tomographic (CT) scanner-specific mean size-specific dose estimates (SSDEs) as a function of patient size and the radiation output of each CT scanner at a site. Materials and Methods The institutional review boards of each center approved this retrospective, HIPAA-compliant, multicenter study; informed consent was waived. CT dose indexes (SSDE, volume CT dose index, and dose length product) of 518 pediatric patients (mean age, 9...
February 17, 2017: Radiology
https://www.readbyqxmd.com/read/28212052/proton-density-fat-fraction-measurements-at-1-5-and-3-t-hepatic-mr-imaging-same-day-agreement-among-readers-and-across-two-imager-manufacturers
#2
Suraj D Serai, Jonathan R Dillman, Andrew T Trout
Purpose To determine the agreement of proton density fat fraction (PDFF) measurements obtained with hepatic magnetic resonance (MR) imaging among readers, imager manufacturers, and field strengths. Materials and Methods This HIPAA-compliant study was approved by the institutional review board. After providing informed consent, 24 adult volunteers underwent imaging with one 1.5-T MR unit (Ingenia; Philips Healthcare, Best, the Netherlands) and two different 3.0-T units (750 W [GE Healthcare, Waukesha, Wis] and Ingenia) on the same day to estimate hepatic PDFF...
February 24, 2017: Radiology
https://www.readbyqxmd.com/read/28212051/-99m-tc-mag3-image-wisely
#3
Andrew T Taylor, Russell D Folks, A K M Fazlur Rahman, Aruna Polsani, Eva V Dubovsky, Raghuveer Halkar, Amita Manatunga
Purpose To determine if commonly administered doses of technetium 99m ((99m)Tc) mertiatide (MAG3) in the range of 300-370 MBq (approximately 8-10 mCi) contribute to image interpretation and justify the resulting radiation exposure. Materials and Methods The respective institutional review boards approved this HIPAA-compliant study and waived informed consent. Baseline and furosemide (99m)Tc-MAG3 imaging examinations in 50 patients suspected of having renal obstruction and 48 patients suspected of having renovascular hypertension (RVH) were randomly selected from archived databases and were independently scored by three experienced readers without access to 2-second flow images...
February 17, 2017: Radiology
https://www.readbyqxmd.com/read/28206962/pi3k-pathway-mutations-are-associated-with-longer-time-to-local-progression-after-radioembolization-of-colorectal-liver-metastases
#4
Etay Ziv, Michael Bergen, Hooman Yarmohammadi, F Ed Boas, E Nadia Petre, Constantinos T Sofocleous, Rona Yaeger, David B Solit, Stephen B Solomon, Joseph P Erinjeri
PURPOSE: To establish the relationship between common mutations in the MAPK and PI3K signaling pathways and local progression after radioembolization. MATERIALS AND METHODS: Retrospective review of a HIPAA-compliant institutional review-board approved database identified 40 patients with chemo-refractory colorectal liver metastases treated with radioembolization who underwent tumor genotyping for hotspot mutations in 6 key genes in the MAPK/PI3K pathways (KRAS, NRAS, BRAF, MEK1, PIK3CA, and AKT1)...
February 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28193464/igas-a-framework-for-using-electronic-intraoperative-medical-records-for-genomic-discovery
#5
Matthew A Levin, Thomas T Joseph, Janina M Jeff, Rajiv Nadukuru, Stephen B Ellis, Erwin P Bottinger, Eimear E Kenny
OBJECTIVE: Design and implement a HIPAA and Integrating the Healthcare Enterprise (IHE) profile compliant automated pipeline, the integrated Genomics Anesthesia System (iGAS), linking genomic data from the Mount Sinai Health System (MSHS) BioMe biobank to electronic anesthesia records, including physiological data collected during the perioperative period. The resulting repository of multi-dimensional data can be used for precision medicine analysis of physiological readouts, acute medical conditions, and adverse events that can occur during surgery...
February 10, 2017: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/28187264/development-of-a-combined-mr-fingerprinting-and-diffusion-examination-for-prostate-cancer
#6
Alice C Yu, Chaitra Badve, Lee E Ponsky, Shivani Pahwa, Sara Dastmalchian, Matthew Rogers, Yun Jiang, Seunghee Margevicius, Mark Schluchter, William Tabayoyong, Robert Abouassaly, Debra McGivney, Mark A Griswold, Vikas Gulani
Purpose To develop and evaluate an examination consisting of magnetic resonance (MR) fingerprinting-based T1, T2, and standard apparent diffusion coefficient (ADC) mapping for multiparametric characterization of prostate disease. Materials and Methods This institutional review board-approved, HIPAA-compliant retrospective study of prospectively collected data included 140 patients suspected of having prostate cancer. T1 and T2 mapping was performed with fast imaging with steady-state precession-based MR fingerprinting with ADC mapping...
February 10, 2017: Radiology
https://www.readbyqxmd.com/read/28185295/irreversible-electroporation-for-the-ablation-of-pancreatic-malignancies-a-patient-specific-methodology
#7
Eduardo L Latouche, Michael B Sano, Melvin F Lorenzo, Rafael V Davalos, Robert C G Martin
BACKGROUND AND OBJECTIVES: Irreversible Electroporation (IRE) is a focal ablation technique highly attractive to surgical oncologists due to its non-thermal nature that allows for eradication of unresectable tumors in a minimally invasive procedure. In this study, our group sought to address the challenge of predicting the ablation volume with IRE for pancreatic procedures. METHODS: In compliance with HIPAA and hospital IRB approval, we established a pre-treatment planning methodology for IRE procedures in pancreas, which optimized treatment protocols for individual cases of locally advanced pancreatic cancer (LAPC)...
February 10, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28184961/renal-mass-biopsy-and-thermal-ablation-should-biopsy-be-performed-before-or-during-the-ablation-procedure
#8
Shane A Wells, Vincenzo K Wong, Tyler A Wittmann, Meghan G Lubner, Sara L Best, Timothy J Ziemlewicz, J Louis Hinshaw, Fred T Lee, E Jason Abel
PURPOSE: To determine if renal mass biopsy should be performed before or during the ablation procedure with emphasis on complications and rate of ablation for renal cell carcinomas (RCC), benign tumors, and small renal masses without a histologic diagnosis. METHODS: This HIPAA-compliant, single-center retrospective study was performed under a waiver of informed consent from the institutional review board. Two hundred eighty-four consecutive patients with a small renal mass (≤4...
February 9, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28170300/effect-of-radiation-dose-reduction-and-reconstruction-algorithm-on-image-noise-contrast-resolution-and-detectability-of-subtle-hypoattenuating-liver-lesions-at-multidetector-ct-filtered-back-projection-versus-a-commercial-model-based-iterative-reconstruction
#9
Justin Solomon, Daniele Marin, Kingshuk Roy Choudhury, Bhavik Patel, Ehsan Samei
Purpose To determine the effect of radiation dose and iterative reconstruction (IR) on noise, contrast, resolution, and observer-based detectability of subtle hypoattenuating liver lesions and to estimate the dose reduction potential of the IR algorithm in question. Materials and Methods This prospective, single-center, HIPAA-compliant study was approved by the institutional review board. A dual-source computed tomography (CT) system was used to reconstruct CT projection data from 21 patients into six radiation dose levels (12...
February 7, 2017: Radiology
https://www.readbyqxmd.com/read/28156475/usability-and-acceptance-of-novel-personal-health-technology-to-support-early-palliative-care-for-patients-with-cancer-and-caregivers
#10
Sarah C Reed, Katherine Kim, Victoria Ngo, Wendy Wait, Ester Apesoa-Varano, Joy Morgan, Robin L Whitney, Emma Blackmon, Jill Joseph
: 73 Background: Little research has assessed whether and how technology can support early palliative care. Our team developed a HIPAA-compliant, cloud-based Personal Health Network (PHN) with a secure, online network of family, caregivers, clinicians and service providers designated by the patient; symptom reporting/management resources; and support for communication among network members via audio/video conferencing, messaging, and document sharing. This study examines PHN usability and acceptance, and identifies additional functions for early palliative care...
October 9, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28156202/diffusion-tensor-imaging-of-the-physes-a-possible-biomarker-for-skeletal-growth-experience-with-151-children
#11
Maria A Bedoya, Jorge Delgado, Jeffrey I Berman, Nancy A Chauvin, David Zurakowski, Raul Ramirez-Grueso, Aikaterini Ntoulia, Diego Jaramillo
Purpose To determine the changes of diffusion-tensor imaging (DTI) and tractography in the distal femur and proximal tibia related to age, sex, and height. Materials and Methods Following institutional review board approval, with waiver of consent and with HIPAA compliance, the authors retrospectively analyzed DTI images of the knee in 151 children, 73 girls (median age, 14.1 years; range, 6.5-17.8 years) and 78 boys (median age, 16.6 years; range, 6.9-17.9 years), studied from January 2013 to October 2014...
February 2, 2017: Radiology
https://www.readbyqxmd.com/read/28152252/can-diffusion-weighted-imaging-serve-as-a-biomarker-of-fibrosis-in-pancreatic-adenocarcinoma
#12
Elizabeth M Hecht, Michael Z Liu, Martin R Prince, Sachin Jambawalikar, Helen E Remotti, Stuart W Weisberg, Donald Garmon, Sara Lopez-Pintado, Yanghee Woo, Michael D Kluger, John A Chabot
PURPOSE: To assess the relationship between diffusion-weighted imaging (DWI) and intravoxel incoherent motion (IVIM)-derived quantitative parameters (apparent diffusion coefficient [ADC], perfusion fraction [f], Dslow , diffusion coefficient [D], and Dfast , pseudodiffusion coefficient [D*]) and histopathology in pancreatic adenocarcinoma (PAC). MATERIALS AND METHODS: Subjects with suspected surgically resectable PAC were prospectively enrolled in this Health Insurance Portability and Accountability Act (HIPAA)-compliant, Institutional Review Board-approved study...
February 2, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28152235/community-delivery-of-semiautomated-fractal-analysis-tool-in-cardiac-mr-for-trabecular-phenotyping
#13
Gabriella Captur, Dina Radenkovic, Chunming Li, Yu Liu, Nay Aung, Filip Zemrak, Catalina Tobon-Gomez, Xuexin Gao, Perry M Elliott, Steffen E Petersen, David A Bluemke, Matthias G Friedrich, James C Moon
PURPOSE: To report the development of easy-to-use magnetic resonance imaging (MRI) fractal tools deployed on platforms accessible to all. The trabeculae of the left ventricle vary in health and disease but their measurement is difficult. Fractal analysis of cardiac MR images can measure trabecular complexity as a fractal dimension (FD). MATERIALS AND METHODS: This Health Insurance Portability and Accountability Act (HIPAA)-compliant study was approved by the local Institutional Review Board...
February 2, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28141670/the-impact-of-law-on-syndromic-disease-surveillance-implementation
#14
Jonathan Purtle, Robert I Field, Thomas Hipper, Jillian Nash-Arott, Esther Chernak, James W Buehler
CONTEXT: Legal environments influence how health information technologies are implemented in public health practice settings. Syndromic disease surveillance (SyS) is a relatively new approach to surveillance that depends heavily on health information technologies to achieve rapid awareness of disease trends. Evidence suggests that legal concerns have impeded the optimization of SyS. OBJECTIVES: To (1) understand the legal environments in which SyS is implemented, (2) determine the perceived legal basis for SyS, and (3) identify perceived legal barriers and facilitators to SyS implementation...
January 30, 2017: Journal of Public Health Management and Practice: JPHMP
https://www.readbyqxmd.com/read/28132859/improved-performance-of-prostate-dce-mri-using-a-32-coil-vs-12-coil-receiver-array
#15
Stephen J Riederer, Eric A Borisch, Adam T Froemming, Roger C Grimm, Akira Kawashima, Lance A Mynderse, Joshua D Trzasko
PURPOSE: To assess whether acquisition with 32 receiver coils rather than the vendor-recommended 12 coils provides significantly improved performance in 3D dynamic contrast-enhanced MRI (DCE-MRI) of the prostate. MATERIALS: The study was approved by the institutional review board and was compliant with HIPAA. 50 consecutive male patients in whom prostate MRI was clinically indicated were prospectively imaged in March 2015 with an accelerated DCE-MRI sequence in which image reconstruction was performed using 12 and 32 coil elements...
January 27, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28097389/observation-time-after-outpatient-non-arterial-interventional-procedures-standards-safety-and-outcomes
#16
Christine K Chen, Johannes Boos, Ammar Sarwar, Bridget O'Bryan-Alberts, Muneeb Ahmed, Olga R Brook
PURPOSE: To evaluate the impact of standardized reduced post-procedure observation time on subsequent healthcare encounters such as emergency department (ED) visits, hospital admissions, and clinic visits. METHODS: 800 consecutive patients undergoing outpatient non-arterial interventional radiologic procedures within the vascular interventional department between 1 June 2013 and 21 July 2014 were included in this IRB-approved, HIPAA-compliant single center observational retrospective study...
January 17, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28096274/infectious-diseases-society-of-america-position-statement-on-telehealth-and-telemedicine-as-applied-to-the-practice-of-infectious-diseases
#17
Javeed Siddiqui, Thomas Herchline, Summerpal Kahlon, Kay J Moyer, John D Scott, Brian R Wood, Jeremy Young
The use of telehealth and telemedicine offers powerful tools for delivering clinical care, conducting medical research, and enhancing access to infectious diseases physicians. The Infectious Diseases Society of America (IDSA) has prepared a position statement to educate members on the use of telehealth and telemedicine technologies. The development of telehealth and telemedicine programs requires the consideration of several issues such as HIPAA, state and local licensure requirements, credentialing and privileging, scope of care, quality, and responsibility and liability...
February 1, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28091696/radiation-dose-reduction-in-parasinus-ct-by-spectral-shaping
#18
Matthias S May, Michael Brand, Michael M Lell, Martin Sedlmair, Thomas Allmendinger, Michael Uder, Wolfgang Wuest
INTRODUCTION: Spectral shaping aims to narrow the X-ray spectrum of clinical CT. The aim of this study was to determine the image quality and the extent of radiation dose reduction that can be achieved by tin prefiltration for parasinus CT. METHODS: All scans were performed with a third generation dual-source CT scanner. A study protocol was designed using 100 kV tube voltage with tin prefiltration (200 mAs) that provides image noise levels comparable to a low-dose reference protocol using 100 kV without spectral shaping (25 mAs)...
January 16, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28079289/apocrine-metaplasia-found-at-mr-biopsy-is-there-something-to-be-learned
#19
Yiming Gao, Vandana Dialani, Carolynn DeBenedectis, Nicole Johnson, Elena Brachtel, Priscilla Slanetz
The purpose of this study was to determine (a) the frequency of apocrine metaplasia (ApoM) found on MR core biopsy of suspicious findings, and (b) to determine if there are specific MR imaging features that might obviate the need for biopsy. This HIPAA-compliant retrospective study was performed under IRB exemption for quality assurance studies. Patient demographics, MR imaging features, and pathology were reviewed. Breast lesions which underwent MR-guided biopsy, yielding ApoM on pathology analysis were included...
January 12, 2017: Breast Journal
https://www.readbyqxmd.com/read/28076721/effect-of-tumor-complexity-and-technique-on-efficacy-and-complications-after-percutaneous-microwave-ablation-of-stage-t1a-renal-cell-carcinoma-a-single-center-retrospective-study
#20
Marki E Klapperich, E Jason Abel, Timothy J Ziemlewicz, Sara Best, Meghan G Lubner, Stephen Y Nakada, J Louis Hinshaw, Christopher L Brace, Fred T Lee, Shane A Wells
Purpose To evaluate the effects of tumor complexity and technique on early and midterm oncologic efficacy and rate of complications for 100 consecutive biopsy-proved stage T1a renal cell carcinomas (RCCs) treated with percutaneous microwave ablation. Materials and Methods This HIPAA-compliant, single-center retrospective study was approved by the institutional review board. The requirement to obtain informed consent was waived. Ninety-six consecutive patients (68 men, 28 women; mean age, 66 years ± 9.4) with 100 stage T1a N0M0 biopsy-proved RCCs (median diameter, 2...
January 11, 2017: Radiology
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