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6MV X-선 선축중심선상에서의 BEAM 특성 - Siemens MEVATRON KD 선형가속기에서 P. D. D와 TMR을 중심으로 -
정칠,김병욱,Chung, Chil,Kim, Byong-Wook 대한방사선치료학회 1989 大韓放射線治療技術學會誌 Vol.3 No.1
The central beam characteristics of 6 MV X-ray from a Mevatron KD linear Accelerator are examin-depths The PDD (Percent Depth Dose) values and the TMR (Tissue Maximum Ratio) values are evaluated from measurement as a function of the depths and the field sizes. The calculated TMR values from the PDD are compared to those from measurement. The average differences between calculated TMR and measured one are within $1\%$ and we have concluded that calculated TMR values are acceptable for practical use.
정칠만,권학철,최상진,이재훈,이동진,류수노,이강노,Jung, Chil-Mann,Kwon, Hak-Cheol,Choi, Sang-Zin,Lee, Jae-Hoon,Lee, Dong-Jin,Ryu, Su-No,Lee, Kang-Ro 한국생약학회 2000 생약학회지 Vol.31 No.2
Three sesquiterpene lactones (1, 2 and 5) and two lipid glycerols (3 and 4) were isolated from MeOH extract of Ainsliaea acerifolia (Compositae). Based on spectral data, their chemical structures were determined as estafiatone (1), zaluzanin C (2), 3-O-(9Z, 12Z, 15Z-octadecatrienoyl) glycerol (3), 3-O-(9Z, 12Z-octadecadienoyl) glycerol (4) and glucozaluzanin C (5). Compounds 1, 3 and 4 were previously not reported from Ainsliaea species.
정칠만,황은주,권학철,김선여,배기환,지옥표,이강노 충남대학교 약학대학 의약품개발연구소 1999 藥學論文集 Vol.15 No.-
Four antioxidative flavonoids were isolated from the aerial parts of Hypericum erectum. Their structures were identified as quercitrin (I), isoquercitrin (Ⅱ), hyperoside (Ⅲ) and orientin (IV) on the basis of spectroscopic means. Antioxidative activities for flavonoids I~IV were determined by measuring lipid peroxide using 2-thiobarbituric acid (TBA) method and by evaluation the radical scavenging activity on 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical. Compound IV, orientin, was found to have strong antioxidative potency.
정칠만,황은주,권학철,김선여,배기환,지옥표,이강노,Jung, Chil-Man,Hwang, Eun-Ju,Kwon, Hak-Chul,Kim, Sun-Yeou,Bae, Ki-Hwan,Zee, Ok-Pyo,Lee, Kang-Ro 한국생약학회 1999 생약학회지 Vol.30 No.2
Four antioxidative flavonoids were isolated from the aerial parts of Hypericum erectum. Their structures were identified as quercitrin (I), isoquercitrin (Ⅱ), hyperoside (Ⅲ) and orientin (IV) on the basis of spectroscopic means. Antioxidative activities for flavonoids $I{\sim}IV$ were determined by measuring lipid peroxide using 2-thiobarbituric acid (TBA) method and by evaluation the radical scavenging activity on 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical. Compound IV, orientin, was found to have strong antioxidative potency.
황은주(Eun Ju Hwang),권학철(Hak Cheol Kwon),정칠만(Chil Man Jung),문형인(Hyung In Moon),김선여(Sun Yeou Kim),지옥표(Ok Pyo Zee),이강노(Kang Ro Lee) 대한약학회 1999 약학회지 Vol.43 No.4
Two polysaccharides, ACP-UMF and ACP-ULF, were purified from the aerial part of Artemisia capillaris by anion-exchange chromatography, ultrafiltration, and gel filtration chromatorgraphy. The polysaccharides appeared to be homogenious from the results of HPLC. The molecular weights of ACP-UMF and ACP-ULF were estimated to be 16305.92 D and 3292.23 D, respectively, by MALDI-TOF MS. The sugar compositions were determined by GC to be arabinose 10.05%, xylose 1.67%, mannose 5.45%, galactose 39.06%, glucose 15.43% for ACP-UMF and arabinose 11.60%, xylose 11.15%, mannose 6.37%, galactose 32.47%, glucose 18.35% for ACP-ULF. A polysaccharide, SP-M, was also purified from Artemisia sylvatica in the same manner as in A. capillaris. The molecular weight of SP-M was determined to be 2462.52 D by MALDI-TOF MS. SP-M consisted mainly of rhamnose 36.49%, arabinose 29.00%, and glucose 19.38%. Incubation of CCl4-intoxicated hepatocytes with ACP-UMF reduced the levels of glutamic pyruvic transaminase(GPT) and cellular malondialdehyde(MDA) to 62.8% and 23.8%. ACP-ULF also reduced the levels of GPT and MDA to 46.1% and 38.1% and SP-M to 38.8% and 26.3%, respectively.
김종화,손정혜,정칠,김미화,Kim Jong-Hwa,Son Jung-Hae,Jung Chil,Kim Mi-Hwa 대한방사선치료학회 2003 大韓放射線治療技術學會誌 Vol.15 No.1
I. 목적 외부방사선 치료와 같이 근접치료 시에도 재현성을 평가하기 위해 bone의 위치와 tandem, ovoid 간의 거리를 측정하여 치료 setting의 재현성을 평가함으로써 자궁경부암 환자의 근접치료시 치료의 재현성을 평가하고자 하였다. II. 대상 및 방법 1999년부터 2001년 10월까지 본원을 내원해서 근접치료를 시행한 자궁경부암 환자중 tandem, ovoid을 사용한 52명을 대상으로 근접치료시 촬영한 film(환자1명당 3회촬영)을 가지고 측정하였다. Os을 기준으로 환자의 center축을 잡고 tandem, ovoid의 위치와 pubic symphysis, sacrum, coccyx등과의 거리를 각각 측정하여 치료 setting의 재현성을 평가하였다. III. 결과 환자 52명에 대한 tandem, ovoid의 위치와 pubic symphysis, sacrum, coccyx등과의 거리에 대한 표준 편차 결과는 다음과 같은 분포로 나타났다. 1) 각 tandem angle 의 표준편차는 $0^{\circ}{\sim}2.89^{\circ}$이다. 2) pubic symphysis에서 Os까지의 높이는 $0cm{\sim}0.79cm$ 3) sacrum에서 tandem tip까지의 거리는 $0cm{\sim}0.9cm$ 4) Os level에서 coccyx까지의 거리는 $0.06cm{\sim}0.76cm$ 5) ovoid tip에서 Os까지의 거리는 오른쪽은 $0cm{\sim}0.53cm$ 6) ovoid tip에서 Os까지의 거리는 왼쪽은 $0cm{\sim}0.45cm$ 7) 첫번째 source위치에서 ovoid사이의 거리는 $0cm{\sim}0.36cm$ 8) tandem에서 ovoid tip까지의 거리는 $0cm{\sim}0.31cm$ IV. 결론 자궁경부암 치료에 있어 근접치료는 중요한 치료 방법이다. 환자 치료간에 재현성을 평가해본 결과 대체로 만족 할 만한 수치를 보였으며 고선량율 근접치료에서 재현성 평가는 중요할 것이고 계속적으로 평가할 필요가 있을 것이다. I. Purpose Brachytherapy is the main component in treatment of patients with uterine cervical cancer. The reproducibility of applicator position in the same patient at repeated treatments was very important for accurate dose delivery. It was aimed to evaluate the change of applicator location between each high dose rate(HDR) brachytherapy insertion in the patients with uterine cervical cancer. II. Materials and Methods From January 1999 to October 2001, total 52 patients were treated with external beam radiotherapy and HDR brachytherapy (Microselectron, Nucletron). During six to seven times of brachytherapy, all patients had three treatment plans. From the orthogonal radiographs, we measured the following variables; height from upper border of pubic bone to os (HPO), distance from sacral promontory to tip of tandem (DST), distance from coccyx to os (DCO), distance from tip of right ovoid to os (DRO), distance from tip of left ovoid to os (DLO), and distance from center of the first tandem source to ovoid (DTO). To evaluate the reproducibility of applicator position, it was calculated the standard deviation of differences between three insertions for the 7 parameters in each patient. III. Results The ranges of standard deviations of interfractional differences for the variables were as follows. 1)HPO : $0{\sim}0.79cm$ 2)DST : $0{\sim}0.9cm$ 3)DCO : $0.06{\sim}0.76cm$ 4)DRO : $0{\sim}0.53cm$ 5)DLO : $0{\sim}0.45cm$ 6) DTO $0{\sim}0.36cm$ IV. Conclusions There was some change in applicator position on repeated implants in our study. But variation of the interfractional differences was minimal; in all parameters, there were less than 1 cm. We are continued to try for reducing the geometric variation between each procedure.