There has been recent interest in radiation-induced bone injury in clinical conditions, especially for pelvic insufficiency fracture (PIF). A PIF is caused by the effect of normal or physiological stress on bone with demineralization and decreased elastic resistance. Pelvic radiotherapy (RT) can also contribute to the development of a PIF. A PIF has been regarded as a rare complication with...

DOI: https://doi.org/10.3857/jkstro.2009.27.1.1   

PURPOSE: This study was designed to evaluate the effectiveness and prognostic factors for patients treated with postoperative radiation therapy following surgery or with radiation therapy alone for squamous cell carcinoma of the esophagus. MATERIALS AND METHODS: We retrospectively analyzed 132 esophageal cancer patients treated with postoperative radiation therapy following surgery or patients who were treated with radiation therapy alone at our...

DOI: https://doi.org/10.3857/jkstro.2009.27.1.10   

PURPOSE: This study was designed to evaluate the effects on bone mineral density (BMD) and related factors according to the distance from the radiation field at different sites. This study was conducted on patients with uterine cervical cancer who received pelvic radiotherapy. MATERIALS AND METHODS: We selected 96 patients with cervical cancer who underwent determination of BMD from November 2002 to December...

DOI: https://doi.org/10.3857/jkstro.2009.27.1.15   

PURPOSE: This study was designed to evaluate the effectiveness of postoperative radiotherapy for patients with low-grade astrocytomas and to define an optimal radiotherapeutic regimen and prognostic factors. MATERIALS AND METHODS: A total of 69 patients with low-grade astrocytomas underwent surgery and postoperative radiotherapy immediately following surgery at our institution between October 1989 and September 2006. The median patient age was 36...

DOI: https://doi.org/10.3857/jkstro.2009.27.1.23   

PURPOSE: This study was designed to evaluate long-term results in terms of failure, survival and voice preservation after radiation therapy for early glottic cancer. MATERIALS AND METHODS: From February 1988 to December 2003, 70 patients with early glottic cancer were treated with radiation therapy at Keimyung University Dongsan Medical Center. Patient age distribution was from 39 to 79 years, with a...

DOI: https://doi.org/10.3857/jkstro.2009.27.1.29   

PURPOSE: This study was designed to determine the optimum radiotherapy technique for internal mammary node (IMN) irradiation after breast-conserving surgery. MATERIALS AND METHODS: We selected ten cases of early stage partial mastectomy for plan comparison. Five of the patients were treated to the right-side breast and the rest of the patients were treated to the left-side breast. For each case, four...

DOI: https://doi.org/10.3857/jkstro.2009.27.1.35   

PURPOSE: The introduction of image guided radiation therapy/four-dimensional radiation therapy (IGRT/4DRT) potentially increases the accumulated dose to patients from imaging and verification processes as compared to conventional practice. It is therefore essential to investigate the level of the imaging dose to patients when IGRT/4DRT devices are installed. The imaging dose level was monitored and was compared with the use of...

DOI: https://doi.org/10.3857/jkstro.2009.27.1.42