Výsledky vyhledávání - "Helena C. Chang"

Nephrolithiasis in Pregnancy: Treating for Two

Autor: Robert M. Sweet, Jessica C. Dai, Mathew D. Sorensen, Alana Desai, Tristan M. Nicholson, Helena C. Chang, Jonathan D. Harper

Publikováno v: Urology. 151:44-53

Objectives To review the literature regarding the epidemiology of stone disease and develop a management algorithm based on current evidence and societal guidelines. Methods A structured literature review was performed to determine highest quality of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35545423e8a7243e339fba05aab88d18
https://doi.org/10.1016/j.urology.2020.06.097

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National Imaging Trends in Nephrolithiasis—Does Renal Ultrasound in the Emergency Department Pave the Way for Computerized Tomography?

Autor: Jonathan D. Harper, Kevan Sternberg, Helena C. Chang, Mathew D. Sorensen, Sarah K. Holt, Jessica C. Dai, Dima Raskolnikov

Publikováno v: Urology Practice. 8:82-87

Introduction:Concern regarding radiation exposure has led to increased interest in the use of ultrasound for the initial imaging of suspected renal colic in the emergency department. It is ...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3fd98a4dbeaff29125ca0d11a86f39f4
https://doi.org/10.1097/upj.0000000000000148

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Quantitative Assessment of Effectiveness of Ultrasonic Propulsion of Kidney Stones

Autor: Jessica C. Dai, Jeff Thiel, Mathew D. Sorensen, Helena C. Chang, Patrick C. Samson, Jonathan D. Harper, Ziyue Liu, Michael R. Bailey, Barbrina Dunmire, Bryan W. Cunitz

Publikováno v: J Endourol

Purpose: Ultrasonic propulsion is an investigative modality to noninvasively image and reposition urinary stones. Our goals were to test safety and effectiveness of new acoustic exposure conditions from a new transducer, and to use simultaneous urete

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a4e36b912a012497dbc74cb238343142
https://doi.org/10.1089/end.2019.0340

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Contrast Enhanced Ultrasound as a Radiation-Free Alternative to Fluoroscopic Nephrostogram for Evaluating Ureteral Patency

Autor: Maureen P. Kohi, Marshall L. Stoller, Andrew Taylor, Thomas Chi, Helena C. Chang, Manint Usawachintachit, David T. Tzou, Stefanie Weinstein, John Mongan

Publikováno v: Journal of Urology. 198:1367-1373

We compared contrast enhanced ultrasound and fluoroscopic nephrostography in the evaluation of ureteral patency following percutaneous nephrolithotomy.This prospective cohort, noninferiority study was performed after obtaining institutional review bo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::950f9b766ba22ccaa6fe950101e090bc
https://doi.org/10.1016/j.juro.2017.07.074

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Feasibility of Antegrade Contrast-enhanced US Nephrostograms to Evaluate Ureteral Patency

Autor: Stefanie Weinstein, Maureen P. Kohi, Manint Usawachintachit, Andrew Taylor, Helena C. Chang, Priyanka Jha, Thomas Chi, John Mongan, Ruth B. Goldstein, Marshall L. Stoller

Publikováno v: Radiology, vol 283, iss 1

Purpose To demonstrate the feasibility of contrast material-enhanced ulrasonographic (US) nephrostograms to assess ureteral patency after percutaneous nephrolithotomy (PCNL) in this proof-of-concept study. Materials and Methods For this HIPAA-complia

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65cf54b174c5c6e5fcf880fa2e648f75
https://doi.org/10.1148/radiol.2016160959

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Computed Tomography Radiation Exposure Among Referred Kidney Stone Patients: Results from the Registry for Stones of the Kidney and Ureter

Autor: David Bayne, David T. Tzou, Jonathan D. Harper, Thomas Chi, Marshall L. Stoller, Roger L. Sur, Mathew D. Sorensen, Ryan S. Hsi, Helena C. Chang, Kazumi Taguchi, Samuel Zetumer, Shalonda Reliford-Titus, Dylan Isaacson, Manint Usawachintachit, Seth K. Bechis, Brian Duty, Zhen J. Wang

Publikováno v: Journal of endourology, vol 33, iss 7
J Endourol

Purpose: Kidney stone patients routinely have CT scans during diagnostic work-up before being referred to a tertiary center. How often these patients exceed the recommended dose limits for occupational radiation exposure of >100 mSv for 5 years and >

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9b72429ff9a3d7d8db839e6cdf613de
https://escholarship.org/uc/item/7gg278s5

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National Trends in CT Utilization and Estimated CT-related Radiation Exposure in the Evaluation and Follow-up of Stone Patients

Autor: Jonathan D. Harper, Jessica C. Dai, Sarah K. Holt, Helena C. Chang

Publikováno v: Urology. 133

To describe trends in computed tomography (CT) use and estimate the radiation exposure among stone formers using a national insurance claims database.Within MarketScan, adult stone patients from 2007 to 2013 were identified using International Classi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14aa69ce2ff154993da8b8af1dcdfddb
https://pubmed.ncbi.nlm.nih.gov/31404583

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Anaphylactoid Reactions After Instillation of Contrast Material Into the Urinary Tract: A Survey of Contemporary Practice Patterns and Review of the Literature

Autor: Wayne Brisbane, Ryan S. Hsi, Jessica C. Dai, Jonathan D. Harper, Helena C. Chang

Publikováno v: Urology. 122

Objective To assess drug reactions (ADRs) encountered by practicing urologists for contrast instilled into the urinary collecting system, and to describe current practice patterns regarding contrast administration into the urinary tract for patients

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a40f32c42290cbbc21ae4b1b628af40
https://pubmed.ncbi.nlm.nih.gov/30195013

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Retrospective comparison of measured stone size and posterior acoustic shadow width in clinical ultrasound images

Autor: Ziyue Liu, Kevan Sternberg, Jeff Thiel, Jonathan D. Harper, Barbrina Dunmire, Jessica C. Dai, Helena C. Chang, Michael R. Bailey, Troy Larson, Mathew D. Sorensen

PURPOSE: Posterior acoustic shadow width has been proposed as a more accurate measure of kidney stone size compared to direct measurement of stone width on ultrasound (US). Published data in humans to date have been based on a research US system. Her

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5cc75c3715f9b7f7cef8e7003d9fb96e
https://europepmc.org/articles/PMC5920741/

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