Kuo JH, Lee JA The Adoption of Ultrasound-guided Radiofrequency Ablation of Thyroid Nodules in the United States. Ann Surg. 2021 Jan 1;273(1):e10-e12. doi: 10.1097/SLA.0000000000003930. No abstract available.
Lang BH, Woo YC, Chiu KW Two-year outcomes of single-session high-intensity focused ultrasound (HIFU) treatment in persistent or relapsed Graves' disease. Eur Radiol. 2019 Dec;29(12):6690-6698. doi: 10.1007/s00330-019-06303-8. Epub 2019 Jun 17.
Lang BH, Woo YC, Wong IY, Chiu KW Single-Session High-Intensity Focused Ultrasound Treatment for Persistent or Relapsed Graves Disease: Preliminary Experience in a Prospective Study. Radiology. 2017 Dec;285(3):1011-1022. doi: 10.1148/radiol.2017162776. Epub 2017 Jul 20.
Yip J, Lang BH, Lo CY Changing trend in surgical indication and management for Graves' disease. Am J Surg. 2012 Feb;203(2):162-7. doi: 10.1016/j.amjsurg.2011.01.029. Epub 2011 Jun 17.
A Prospective Evaluation of Radiofrequency Ablation in the Treatment of Relapsed Graves' Disease.
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.