HelenaChihhuaChangMD

PubMed

• 2 citations
  National Imaging Trends in Nephrolithiasis-Does Renal Ultrasound in the Emergency Department Pave the Way for Computerized Tomography?
  Helena C Chang, Dima Raskolnikov, Jessica C Dai, Sarah K Holt, Mathew D Sorensen, Kevan Sternberg, Jonathan D Harper> ;Urology Practice. 2021 Jan 1
• 12 citations
  Quantitative Assessment of Effectiveness of Ultrasonic Propulsion of Kidney Stones.
  Jessica C. Dai, Mathew D. Sorensen, Helena C. Chang, Patrick C. Samson, Barbrina Dunmire, Bryan W. Cunitz, Jeff Thiel, Ziyue Liu, Michael R. Bailey, Jonathan D. Harper> ;Journal of Endourology. 2019 Sep 25
• 6 citations
  National trends in CT utilization and estimated CT-related radiation exposure in the evaluation and follow-up of stone patients
  Jessica C. Dai, Helena C. Chang, Sarah K. Holt, Jonathan D. Harper> ;Urology. 2019 Aug 9
• 15 citations
  Computed Tomography Radiation Exposure Among Referred Kidney Stone Patients: Results from the Registry for Stones of the Kidney and Ureter
  David T. Tzou, Samuel Zetumer, Manint Usawachintachit, Kazumi Taguchi, Seth K. Bechis, Brian Duty, Jonathan D. Harper, Ryan S. Hsi, Mathew D. Sorensen, Roger L. Sur, S...> ;Journal of Endourology. 2019 Jul 12
• 3 citations
  Anaphylactoid Reactions After Instillation of Contrast Material Into the Urinary Tract: A Survey of Contemporary Practice Patterns and Review of the Literature
  Jessica C. Dai, Wayne Brisbane, Helena C. Chang, Ryan S. Hsi, Jonathan D. Harper> ;Urology. 2018 Sep 5
• 17 citations
  Retrospective comparison of measured stone size and posterior acoustic shadow width in clinical ultrasound images.
  Jessica C. Dai, Barbrina Dunmire, Kevan Sternberg, Ziyue Liu, Troy Larson, Jeff Thiel, Helena C. Chang, Jonathan D. Harper, Michael R. Bailey, Mathew D. Sorensen> ;World Journal of Urology. 2018 May 1
• 18 citations
  Contrast Enhanced Ultrasound as a Radiation-Free Alternative to Fluoroscopic Nephrostogram for Evaluating Ureteral Patency
  Thomas Chi, Manint Usawachintachit, Stefanie Weinstein, Maureen P. Kohi, Andrew Taylor, David T. Tzou, Helena C. Chang, Marshall L. Stoller, John Mongan> ;The Journal of Urology. 2017 Dec 1
• Re: Leapman et al.: Up and Away: Five Decades of Urologic Investigation in Microgravity (Urology 106:18-25).
  Helena C. Chang, Mathew D. Sorensen, Jonathan D. Harper, Michael R. Bailey, Dorit Donoviel> ;Urology. 2017 Sep 7
• 13 citations
  Feasibility of Antegrade Contrast-enhanced US Nephrostograms to Evaluate Ureteral Patency.
  Thomas Chi, Manint Usawachintachit, John Mongan, Maureen P. Kohi, Andrew Taylor, Priyanka Jha, Helena C. Chang, Marshall L. Stoller, Ruth B. Goldstein, Stefanie Weinstein> ;Radiology. 2017 Apr 1
• 28 citations
  Ultrasound Guidance to Assist Percutaneous Nephrolithotomy Reduces Radiation Exposure in Obese Patients
  Manint Usawachintachit, Selma Masic, Helena C. Chang, Isabel E. Allen, Thomas Chi> ;Urology. 2016 Dec 1
• 27 citations
  Rationale and Design of the Registry for Stones of the Kidney and Ureter (ReSKU): A Prospective Observational Registry to Study the Natural History of Urolithiasis Pat...
  Helena C. Chang, David T. Tzou, Manint Usawachintachit, Brian Duty, Ryan S. Hsi, Jonathan D. Harper, Mathew D. Sorensen, Marshall L. Stoller, Roger L. Sur, Thomas Chi> ;Journal of Endourology. 2016 Dec 1
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