http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Mouthguard use in Korean Taekwondo athletes - awareness and attitude
Lee, Jung-Woo,Heo, Chong-Kwan,Kim, Sea-Joong,Kim, Gyu-Tae,Lee, Deok-Won The Korean Academy of Prosthodonitics 2013 The Journal of Advanced Prosthodontics Vol.5 No.2
PURPOSE. A survey was performed to identify the level of mouthguard use, awareness, wearability issues and attitude toward mouthguard among elite Korean Taewondo athletes. MATERIALS AND METHODS. Survey questionnaires were given to 152 athletes participating in the Korea National Taekwondo team selection event for the 2010 Guangzhou Asian Games. Questionnaires consisted of three sections, mouthguard awareness, reasons for not wearing mouthguard and the last section to test the level of acceptance on current mouthguard and when the identified problems were resolved. For analyzing difference among response, ${\chi}^2$ test was used and significant level (${\alpha}$) was set up as 0.05. RESULTS. Responses in each of items showed significant difference (P<.001). Majority of response regarding each question: Majority of respondents believed that mouthguard were effective in preventing injuries (36.4%) but the result suggested that the provision of information on mouthguard to athletes was inadequate (44.0%) and the result showed that respondents were not greatly interested or concerned in relation to the mandatory mouthguard rule (31.6%). Although the responses on the level of comfort and wearability of mouthguard were negative (34.8%), athletes were positively willing to wear mouthguard if the problems rectified (51.2%). CONCLUSION. Considering the high level of willingness to wear mouthguard if the problems rectified, it is thought that together with efforts in providing more mouthguard information, the work of sports dentistry to research and improve mouthguard will be invaluable in promoting mouthguard to more athletes.
Lee, So Jung,Kay, Chul-Seoung,Kim, Yeon-Sil,Son, Seok Hyun,Kim, Myungsoo,Lee, Sea-Won,Kang, Hye Jin The Korean Society for Radiation Oncology 2017 Radiation Oncology Journal Vol.35 No.4
Purpose: To investigate the predictive role of maximum standardized uptake value ($SUV_{max}$) of 2-[$^{18}F$]fluoro-2-deoxy-D-glucose($^{18}F-FDG$) positron emission tomography/computed tomography (PET/CT) in nasopharyngeal cancer patients treated with intensity-modulated radiotherapy (IMRT). Materials and Methods: Between October 2006 and April 2016, 53 patients were treated with IMRT in two institutions and their PET/CT at the time of diagnosis was reviewed. The $SUV_{max}$ of their nasopharyngeal lesions and metastatic lymph nodes (LN) was recorded. IMRT was delivered using helical tomotherapy. All patients except for one were treated with concurrent chemoradiation therapy (CCRT). Correlations between $SUV_{max}$ and patients' survival and recurrence were analyzed. Results: At a median follow-up time of 31.5 months (range, 3.4 to 98.7 months), the 3-year overall survival (OS) and disease-free survival (DFS) rates were 83.2% and 77.5%, respectively. In univariate analysis, patients with a higher nodal pre-treatment $SUV_{max}$ (${\geq}13.4$) demonstrated significantly lower 3-year OS (93.1% vs. 55.5%; p = 0.003), DFS (92.7% vs. 38.5%; p < 0.001), locoregional recurrence-free survival (100% vs. 50.5%; p < 0.001), and distant metastasis-free survival (100% vs. 69.2%; p = 0.004), respectively. In multivariate analysis, high pre-treatment nodal $SUV_{max}$ (${\geq}13.4$) was a negative prognostic factor for OS (hazard ratio [HR], 7.799; 95% confidence interval [CI], 1.506-40.397; p = 0.014) and DFS (HR, 9.392; 95% CI, 1.989-44.339; p = 0.005). Conclusions: High pre-treatment nodal $SUV_{max}$ was an independent prognosticator of survival and disease progression in nasopharyngeal carcinoma patients treated with IMRT in our cohort. Therefore, nodal $SUV_{max}$ may provide important information for identifying patients who require more aggressive treatment.
Lee, Kyung Ha,Woo, Koan Sik,Yong, Hae In,Jo, Cheorun,Lee, Seuk Ki,Lee, Byong Won,Oh, Sea-Kwan,Lee, Yu-Young,Lee, Byoungkyu,Kim, Hyun-Joo Korean Society of Food Science and Technology 2018 Food Science and Biotechnology Vol.27 No.3
The microbial and physicochemical properties of brown and white cooked rice treated by atmospheric pressure plasma (APP). APP was produced (250 W, 15 kHz, ambient air) and applied to brown and white cooked rice for 5, 10, and 20 min. The 20-min plasma treatment reduced in bacterial counts by 2.01 log CFU/g when cooked rice were inoculated with Bacillus cereus or Escherichia coli O157:H7. The pH of the brown cooked rice was decreased by the 5-min plasma. The hardness values of APP-treated brown and white cooked rice were lower than untreated samples. The reducing sugar contents of brown and white cooked rice were significantly higher than those in untreated samples. Lipid oxidation of APP-treated brown and white cooked rice were higher compared to untreated samples. These results indicate that APP improves microbial quality, although further studies should be conducted to change the physicochemical qualities of brown and white cooked rice induced by APP.
Lee, Hyo Chun,Lee, Jong Hoon,Lee, Sea-Won,Lee, Joo Hwan,Yu, Mina,Jang, Hong Seok,Kim, Sung Hwan The Korean Society for Radiation Oncology 2019 Radiation Oncology Journal Vol.37 No.4
Purpose: This study was conducted to compare the outcome of three-dimensional conformal radiotherapy (3D-CRT) and intensity-modulated radiotherapy (IMRT) for the postoperative treatment of biliary tract cancer. Materials and Methods: From February 2008 to June 2016, 57 patients of biliary tract cancer treated with curative surgery followed by postoperative 3D-CRT (n = 27) or IMRT (n = 30) were retrospectively enrolled. Results: Median follow-up time was 23.6 months (range, 5.2 to 97.6 months) for all patients and 38.4 months (range, 27.0 to 89.2 months) for survivors. Two-year recurrence-free survival is higher in IMRT arm than 3D-CRT arm with a marginal significance (25.9% vs. 47.4%; p = 0.088). Locoregional recurrence-free survival (64.3% vs. 81.7%; p = 0.122) and distant metastasis-free survival (40.3% vs. 55.8%; p = 0.234) at two years did not show any statistical difference between two radiation modalities. In the multivariate analysis, extrahepatic cholangiocarcinoma, poorly-differentiated histologic grade, and higher stage were significant poor prognostic factors for survival. Severe treatment-related toxicity was not significantly different between two arms. Conclusions: IMRT showed comparable results with 3D-CRT in terms of recurrence, and survival, and radiotherapy toxicity for the postoperative treatment of biliary tract cancer.
Lee, Sea-Won,Lee, Jong Hoon,Lee, In Kyu,Oh, Seong Taek,Kim, Dae Yong,Kim, Tae Hyun,Oh, Jae Hwan,Baek, Ji Yeon,Chang, Hee Jin,Park, Hee Chul,Kim, Hee Cheol,Chie, Eui Kyu,Nam, Taek-Keun,Jang, Hong Seok Korean Cancer Association 2018 Cancer Research and Treatment Vol.50 No.3
<P><B>Purpose</B></P><P>A pooled analysis of multi-institutional trials was performed to analyze the effect of surgical timing on tumor response by comparing short course concurrent chemoradiotherapy (CCRT) with long course CCRT followed by delayed surgery in locally advanced rectal cancer.</P><P><B>Materials and Methods</B></P><P>Three hundred patients with cT3-4N0-2 rectal adenocarcinoma were included. Long course patients from KROG 14-12 (n=150) were matched 1:1 to 150 short course patients from KROG 10-01 (NCT01129700) and KROG 11-02 (NCT01431599) according to stage, age, and other risk factors. The primary endpoint was to determine the interval between surgery and the last day of neoadjuvant CCRT which yields the best tumor response after the short course and long course CCRT. Downstaging was defined as ypT0-2N0M0 and pathologic complete response (ypCR) was defined as ypT0N0M0, respectively.</P><P><B>Results</B></P><P>Both the long and short course groups achieved lowest downstaging rates at < 6 weeks (long 20% vs. short 8%) and highest downstaging rates at 6-7 weeks (long 44% vs. short 40%). The ypCR rates were lowest at < 6 weeks (both long and short 0%) and highest at 6-7 weeks (long 21% vs. short 11%) in both the short and long course arms. The downstaging and ypCR rates of long course group gradually declined after the peak at 6-7 weeks and those of the short course group trend to constantly increase afterwards.</P><P><B>Conclusion</B></P><P>It is optimal to perform surgery at least 6 weeks after both the short course and long course CCRT to obtain maximal tumor regression in locally advanced rectal adenocarcinoma.</P>
S-479 : Cervical spine and pelvic bone metastases from unknown primary hepatocellular carcinoma
( Sea Won Hwang ),( Ji Eun Lee ),( Jung Min Lee ),( Young Min Kim ),( Sook Hee Hong ),( Myung Ah Lee ),( Ho Jong Chun ),( Sung Hak Lee ),( Eun Sun Jung ),( Hoo Geun Chun ) 대한내과학회 2013 대한내과학회 추계학술대회 Vol.2013 No.1
Hepatocellular carcinoma (HCC) is the fifth most common cancer in Korea. We report a case of hepatocellular carcinoma of unknown primary origin, presented with cervical spine and pelvic bone metastases. A 61-year-old male was admitted to oncology department for the evaluation of 3 cm sized mass located at C5 spine. He experienced left upper extremity weakness and tingling sensation for 2 months before visiting oncology department. For primary mass evaluation, abdomen CT scan was done. Besides of cervical mass, 7.6 cm sized hypervascular mass was found at right iliac bone, detected by abdomen CT scan. Both masses were suspected for metastatic cancer, but primary lesion was not detected. This patient showed positive results on hepatitis B screening. On blood chemistry, serum α-fetoprotein (AFP) was 5013.1 ng/mL (reference range <10 ng/mL), and protein induced by vitamin K absence or antagonist-II (PIVKA-II) was 13891 mAU/mL (reference range <40 mAU/mL). MRI showed cirrhotic configuration of liver, but no definite hepatic mass was detected. Percutaneous bone biopsy for iliac mass was done for pathologic confirmation, and C5 corpectomy with sub-total tumor removal was done for symptomatic relief. Histopathological examination showed eosinophilic cytoplasm-rich cells, positive with hepatocyte surface antigen (HSA) and CD10 on both specimens. This was consistent with HCC. Pelvic and right iliac angiography revealed hypervascular tumor located at right iliac bone, and transarterial embolization (TACE) was performed. This patient underwent localized radiation therapy to control pelvic mass and remnant C5 mass, and received sorafenib 400 mg bid thereafter. On imaging findings, iliac mass showed partial regression, and serum AFP was decreased to 47.3 ng/mL and PIVKA-II was decreased to 6344 mAU/mL. He was readmitted to orthopedic surgery department for the management of right pelvic pain. Right iliac bone fracture was confirmed on plain x-ray, and he received wide resection and reconstruction of iliac bone. He is currently taking sorafenib, and tumor is still on partial regression state.
Lee, Sea-Won,Hwang, Tae-Kon,Hong, Sung-Hoo,Lee, Ji-Youl,Chung, Mi Joo,Jeong, Song Mi,Kim, Sung Hwan,Lee, Jong Hoon,Jang, Hong Seok,Yoon, Sei Chul The Korean Society for Radiation Oncology 2014 Radiation Oncology Journal Vol.32 No.3
Purpose: This single institutional study is aimed to observe the outcome of patients who received postoperative radiotherapy after radical prostatectomy. Materials and Methods: A total of 59 men with histologically identified prostate adenocarcinoma who had received postoperative radiation after radical prostatectomy from August 2005 to July 2011 in Seoul St. Mary's Hospital of the Catholic University of Korea, was included. They received 45-50 Gy to the pelvis and boost on the prostate bed was given up to total dose of 63-72 Gy (median, 64.8 Gy) in conventional fractionation. The proportion of patients given hormonal therapy and the pattern in which it was given were analyzed. Primary endpoint was biochemical relapse-free survival (bRFS) after radiotherapy completion. Secondary endpoint was overall survival (OS). Biochemical relapse was defined as a prostate-specific antigen level above 0.2 ng/mL. Results: After median follow-up of 53 months (range, 0 to 104 months), the 5-year bRFS of all patients was estimated 80.4%. The 5-year OS was estimated 96.6%. Patients who were given androgen deprivation therapy had a 5-year bRFS of 95.1% while the ones who were not given any had that of 40.0% (p < 0.01). However, the statistical significance in survival difference did not persist in multivariate analysis. The 3-year actuarial grade 3 chronic toxicity was 1.7% and no grade 3 acute toxicity was observed. Conclusion: The biochemical and toxicity outcome of post-radical prostatectomy radiotherapy in our institution is favorable and comparable to those of other studies.