Yongchan Ahn
Sungkyunkwan University · 医学
研究室紹介
Professor Yongchan Ahn's research lab specializes in radiation oncology and medical physics, with a focus on improving cancer treatment outcomes through advanced radiation therapy techniques and personalized treatment planning. The lab investigates prognostic factors in head and neck, lung, and salivary gland cancers, emphasizing adaptive radiotherapy, tumor volume response, and dosimetric predictors for treatment toxicity. It also explores the integration of cloud computing and virtualization technologies to enhance real-time data processing for mobile and healthcare applications. The lab's work bridges clinical oncology with biomedical informatics to optimize patient care and treatment delivery.
Research Overview
Research Output Trend
Figures are computed from collected data and may differ slightly.
Selected Papers
15SBRT for single or oligo-metastasis to the lung seems quite effective and safe. Tumor size, disease-free interval, and presence of extrathoracic disease are prognosticators for survival.
Cloud computing with virtualization technologies has become an important trend in the information technology industry. Due to its salient features of reliability and cost effectiveness, cloud computing has changed the paradigms of development for mobile pervasive services, effectively permeating the market. While most types of best effort mobile pervasive applications can be seamlessly migrated to cloud computing infrastructures, we need to consider specialized elements to make cloud computing i
OBJECTIVES: This is to report treatment results of major salivary gland cancer by surgery with or without postoperative radiation therapy (PORT). METHODS: Between March 1995 and January 2006, 94 patients with primary major salivary cancer underwent curative surgical resection at Samsung Medical Center. The parotid gland was the most commonly involved (73, 77.7%), followed by the submandibular and the sublingual. Neck dissection was added in 28 patients, and PORT was individually recommended to t
Dosimetric parameters were valuable in predicting the development of RP.
BACKGROUND: The purpose of this study was to evaluate the prognostic significance of the tumor volume reduction rate (TVRR) measured during adaptive definitive radiation therapy (RT) in patients with oropharyngeal cancer. METHODS: We reviewed the RT records of 59 patients with oropharyngeal cancer who were treated with definitive RT with or without concurrent chemotherapy between January 2006 and October 2010. Adaptive replanning was performed in all patients during RT. The pre-RT and mid-RT gro
Lymph node metastasis was a poor prognostic factor and adjuvant RT may be useful in patients with microscopic residual tumor. However, because there were high loco-regional recurrences, additional study is needed to determine more effective RT such as increased RT dose or use of radiosensitizers.
We aimed to report the clinical outcomes following stereotactic body radiation therapy (SBRT) using photon or proton equipment in early-stage lung cancer. We retrospectively reviewed 202 cT1-2N0M0 lung cancer patients who underwent SBRT with 60 Gy in four consecutive fractions between 2010 and 2019 at our institution: 168 photon SBRT and 34 proton SBRT. Patients who underwent proton SBRT had relatively poor baseline lung condition compared to those who underwent photon SBRT. Clinical outcomes we
Herein is reported our experience of radiation therapy using a real-time tumor-tracking and gated radiotherapy (RTRT) system for inoperable pancreatic cancer. Three unresectable pancreatic cancer patients were treated with intraoperative electron beam radiation therapy, at the time of open biopsy, and postoperative external beam radiation therapy using an RTRT system with a 2.0 mm diameter gold ball implanted into the pancreas. The total BED'salpha/beta=10 was intended to be equivalent to that o