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김효린,홍현숙,이은혜,이민희,박정미,곽정자,이승원 대한영상의학회 2012 대한영상의학회지 Vol.66 No.6
Purpose: To assess the ultrasonographic (US) findings of foreign body granulomas detected by endoscopic thyroidectomy. Materials and Methods: On positron emission tomography-computed tomography of patients who had undergone endoscopic thyroidectomy, we encountered three fluorodeoxyglucose uptaken lesions in the surgical bed and those were pathologically confirmed to be foreign body granulomas. Additionally, 10 lesions demonstrating the same US findings were clinically diagnosed as foreign body granulomas. Echogenicity, shape, size, location, and vascularity were evaluated on US. Eleven lesions were subjected to follow-up US. Results: On US, seven lesions were found to be hyperechoic linear lesions with posterior acoustic shadowing while six other lesions were oval, iso- to slightly hypoechoic lesions. No vascularity was observed on color Doppler US. The size of the lesions was inversely correlated with the time to lesion detection (Spearman’s correlation r = -0.6528; p = 0.02). Oval iso- to slightly hypoechoic lesions (mean, 672 days) had statistically longer times from the time of thyroidectomy to lesion detection on US than hyperechoic linear lesions (mean, 318 days; Mann-Whitney test, p = 0.02). On follow-up US, the lesions had decreased in size and hyperechoic linear lesions became oval iso- to slightly hypoechoic lesions. Conclusion: In patients who underwent endoscopic thyroidectomy, characteristic US findings and evolutional changes are helpful for the diagnosis of foreign body granulomas and to distinguish from recurrent thyroid cancer, thus avoiding invasive procedures.
Effect of Physical Aging on the Bending Recovery of PEEK and PI Films
김효린,이무성,기인서,정소연,김성민 한국섬유공학회 2019 Fibers and polymers Vol.20 No.5
The relationship between the viscoelasticity and bending recovery responses of PI and PEEK films were studied aswell as the effect of physical aging treatment on these properties. The residual elastic modulus (Er) and degree of aging of thefilms were measured from the stress relaxation-recovery experiment using DMA and the enthalpy relaxation endotherms nearglass transition temperature using DSC, respectively. The instantaneous bending recovery ratio (BR+) of the films wasmeasured from the change in radius of curvature before and after the bending under the condition of 85 oC/85 %RH/24 hr. The DMA test was also performed at 85 oC in order to evaluate the progression of the stress relaxation during bending. The Erand BR+ values showed good correlation, and higher contributions of elastic response or longer delay of the stress relaxationled to improved bending recovery. Films with BR+ values close to zero can be obtained if the conditions of Er<0.05 aresatisfied. A physical aging method was proven to be effective for controlling the viscoelastic response of the films; itcontributes to the retardation of stress relaxation. The optimum physical aging temperatures were 200 oC for PI and 130 oC forPEEK, respectively. Both films achieved a sufficient aging effect with the treatment time of 24 hours.
폴리에스터 필름의 물리적 노화 처리가 은-나노와이어 코팅 필름의 굽힘 회복 특성에 미치는 영향
김효린,한종훈,김성민,이무성 한국섬유공학회 2020 한국섬유공학회지 Vol.57 No.6
We investigated the effects of physical aging on the bending recovery of polyesterconductive films coated with Ag nanowires (AgNWs). The physical aging treatment contributedto the improvement in the bending recovery of polyester films irrespective of theAgNW coating. The stress relaxation-recovery experiment confirmed that the films withgood bending recovery demonstrated retarded stress relaxation, increased instantaneouselastic strain, and decreased permanent deformation. The drying temperature after coatinghad an effect on the bending recovery of polyester films, with a significant effect on thepoly(ethylene terephthalate) (PET) film that had a lower glass transition temperature comparedto poly(ethylene naphthalate) (PEN) film. Physical aging did not significantly affectthe electrical resistance of the AgNW-coated polyester films.
김효린,정혜련,백동기,원진희,문구,Kim, Hyo-Rin,Jeong, Hye-Ryon,Baek, Dong-Gi,Won, Jin-Hee,Moon, Goo 대한암한의학회 2014 大韓癌韓醫學會誌 Vol.19 No.1
Objectives : The purpose of this study was to present the clinical guidelines for gastric cancer. Methods : The literature on Western and Oriental medical treatment of gastric cancer were collected, analyzed and summarized from the Google Scholar, KIOM OASIS and PUBMED from 1993 to 2014. Results : Gastric cancer is the second most common cancer in Korea. In recent studies, applying integrative oriental and western medicine can suppress the tumor, improve the survival, the immune system, and the quality of life in gastric cancer. But there isn't still a unified protocol for gastric cancer treatment, so we have difficulty in clinical application. This study will be helpful for understanding and building systems for integrative gastric cancer treatment. Conclusion : Further studies on integrative gastric cancer treatment are needed to improve the survival of gastric cancer patients and build the clinical practice guidelines of gastric cancer.
간세포암의 부분 간절제술 후 한방치료로 복수를 동반한 간경변 증상이 호전된 환자 증례보고
김효린,정혜련,장철용,우찬,하예진,문구,백동기,Kim, Hyo-rin,Jeong, Hye-ryon,Jang, Chul-yong,Woo, Chan,Ha, Ye-jin,Moon, Goo,Baek, Dong-gi 대한한방내과학회 2015 大韓韓方內科學會誌 Vol.36 No.3
Objectives The purpose of this study is to report the possibility of treatment of liver cirrhosis with traditional Korean medical treatment. Methods A 57-year-old man diagnosed with hepatocellular carcinoma and liver cirrhosis was admitted to Wonkwang University Oriental Medical Hospital in August 2014. He underwent liver lobectomy and later experienced abdominal pain, anorexia, and insomnia. To control cirrhotic ascites and prevent relapses, he opted to receive HangAmDan-B (HAD-B) and cultivated wild ginseng herbal acupuncture therapy. Results After treatment, the volume of ascites decreased and the patient&’s symptoms such as abdominal pain and anorexia improved. Conclusions This report suggests that HAD-B and cultivated wild ginseng herbal acupuncture therapy may play a therapeutic role in liver cirrhosis occurring after liver lobectomy.