• Journal of the Korean Society of Radiology
• /
• v.7 no.2
• /
• pp.121-129
• /
• 2013

In this study measured patient exposure dose for purpose exposure area and peripheral critical organs by using optically stimulated luminescence dosimeters (OSLDs) from computed tomography (CT), based on the measurement results, we predicted the radiobiological effects, and would like to advised ways of reduction strategies. In order to experiment, OSLDs received calibration factor were attached at left and right lens, thyroid, field center, and sexual gland in human body standard phantom that is recommended in ICRP, and we simulated exposure dose of patients in same condition that equal exposure condition according to examination area. Average calibration factor of OSLDs were $1.0058{\pm}0.0074$. In case of left and right lens, equivalent dose was measure in 50.49 mGy in skull examination, 0.24 mGy in chest, under standard value in abdomen, lumbar spine and pelvis. In case of thyroid, equivalent dose was measured in 10.89 mGy in skull examination, 7.75 mGy in chest, 0.06 mGy in abdomen, under standard value in lumber spine and pelvis. In case of sexual gland, equivalent dose was measured in 21.98 mGy, 2.37 mGy in lumber spine, 6.29 mGy in abdomen, under standard value in skull examination. Reduction strategies about diagnosis reference level (DRL) in CT examination needed fair interpretation and institutional support recommending international organization. So, we met validity for minimize exposure of patients, systematize influence about exposure dose of patients and minimize unnecessary exposure of tissue.

• Journal of radiological science and technology
• /
• v.33 no.2
• /
• pp.127-132
• /
• 2010

The purpose of this study is to measure scattered ray which is occurred except for Z-axis range of the detector in MDCT's iso-center and present the basic data about the standard for reduction of scattered ray. The development of MDCT brings out the enlargement of beam thickness to the patient's Z-axis, which distributes to the increase in exposure dose according to the rise of scattered ray. Also MDCT brings out the increase of scattered ray about 4times more than SDCT. To evaluate scattered ray according to the change of beam thickness on MDCT, we measured scattered ray of MDCT's Z-axis beam thickness by using one 16-slice CTs and two 64-slice CTs. We used the ionization chamber 60ml 2026C as the equipment of measurement. In our results, we found out that the change of scattered ray according to the beam thickness in the same kVp has increase of scattered ray. Secondly we found out the increase of scattered ray according to the increase of kVp. Lastly we found out the decrease of scattered ray according to the increase of the distance from the ionization chamber.

• Journal of the Korean Society of Radiology
• /
• v.7 no.1
• /
• pp.17-24
• /
• 2013

This study estimate radiation biological danger factor by measuring patient's exposed dose and propose the low way of patient's exposed dose in panoramic radiography. We seek correcting constant of OSL dosimeter for minimize the error of exposed dose's measurement and measure the Left, Right crystalline lens, thyroid, directly included upper, lower lips, the maxillary bone and the center of photographing that indirect included in panoramic radiography by using the human body model standard phantom advised in ICRP. In result, the center of photographing's level of radiation maximum value is $413.67{\pm}6.53{\mu}Gy$ and each upper, lower lips is $217.80{\pm}2.98{\mu}Gy$, $215.33{\pm}2.61{\mu}Gy$. Also in panoramic radiography, indirect included Left, Right crystalline lens's level of radiation are $30.73{\pm}2.34{\mu}Gy$, $31.87{\pm}2.50{\mu}Gy$, and thyroid's level of measured exposed dose can cause effect of radiation biological and we need justifiable analysis about radiation defense rule and substantiation advised international organization for the low way of patient's exposed dose in panoramic radiography of dental clinic and we judge need the additional study about radiation defense organization for protect the systematize protocol's finance and around internal organs for minimize until accepted by many people that is technological, economical and social fact by using panoramic measurement.

• Journal of Physiology & Pathology in Korean Medicine
• /
• v.25 no.6
• /
• pp.989-995
• /
• 2011

Hypothyroidism is the most common disease in the endocrine system. Cistanche Deserticola has been used traditionally in the treatment of kidney deficiency and Yang deficiency syndrome. In this study, we investigated the therapeutic effects of Cistanche Deserticola on Hypothyroidism rat model induced by PTU. 24 Two-month-old Sprague-Dawley male rats were divided into 4 groups : 1) normal(n=6), 2) PTU-induced hypothyroidism control(n=6), 3) hypothyroidism rat treated with Cistanche Deserticola(n=6), 4) hypothyroidism rat treated with levothyroxine(n=6). PTU was administered for 4 weeks. Cistanche Deserticola and levothyroxine was administered 2 weeks after PTU was initiated for a total duration of 2 week. Body weights were checked every week and after 4 weeks, biochemical analysis was performed and T3, T4 and TSH were measured by ELISA kits. In comparison with the normal group, the control group showed hypothyroidism with lower T3, T4 level and higher TSH level. In the Cistanche group the level of T4 was significantly increased and TSH level was significantly decreased. There was no significant difference in biochemical labs and weight between the Cistanche group and the control group. These findings suggest that Cistanche Deserticola could help the production of thyroid hormones under PTU suppression. And there is no harmful effect on liver and kidney function, and other metabolism. According to these results Cistanche Deserticola could be an useful agent for treating hypothyroidism.

• Proceedings of the KAIS Fall Conference
• /
• 2010.11b
• /
• pp.729-732
• /
• 2010

본 논문에서는 다시마를 이용한 기능성 음용수를 개발하기 위한 연구를 진행하였다. 다시마는 당뇨병과 같은 성인병 예방에 특효가 있을 뿐만 아니라 체질개선효과 및 갑상선 질환의 예방, 변비예방 효과, 탈모치료 효과 등 다양한 효능을 가지고 있다. 이러한 다시마는 현재 채 볶음, 다시마튀각, 다시마 무침, 다시마 말이 등 다양한 요리의 재료가 될 뿐만 아니라 다양한 요리의 맛을 해는 조미료로서 많이 사용 되고 있다. 하지만 이런 다시마를 조미료로서 사용하기 위한 가공과정이 복잡하여 가정에서는 쉽게 사용하지 못할 뿐만 아니라 시중에 파는 가공 다시마의 경우 다양한 화학 첨가제가 들어가 건강한 식생활에 적절치 못하고 다시마를 이용한 요리들은 우리가 쉽게 접할 수 없는 요리들이 대부분이어서 우리가 생활하는데 있어서 다시마를 쉽게 접하기가 어렵다. 따라서, 우리는 이러한 다시마를 실생활에서 쉽게 접하기 위하여 물처럼 마시는 다시마에 대한 연구를 진행하였다. 다시마를 끓는 물을 이용하여 우려내 맛을 평가 했을 뿐만 아니라 해조류 특유의 비릿한 맛과 향을 제거하기 위하여 감초, 레몬, 파, 녹차, 생강 등을 이용하였고, 그 결과 다시마의 비릿한 향과 맛을 잡아 낼 수 있는 생각이라는 해결책을 찾아내었다. 그리고 다시마와 생강의 비율을 조절 하고 다시마를 우려내는 시간을 조절하여 맛을 평가하였다.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.21 no.12
• /
• pp.2341-2346
• /
• 2017

The relative position of the eyeballs in the orbit can be a criterion for estimating multiple pathological conditions. Especially, it is useful to diagnose orbital fracture, thyroid eye disease, orbital tumor, and to evaluate the result of drug and surgical treatment. The Hertel and Naugle exophthalmometer, which are the most commonly used measuring instruments for measuring the prominence of the eye, are different from each other. Even if the same examiner repeatedly measures, it is inevitable. Also, even if the same exophthalmometer is different from the manufacturing company, the design of the fixed part of the orbit is different, and a measurement error is caused by the inspectors. In this paper, we propose a method of automatic measurement that can increase the accuracy and repeatability of measurement of exophthalmos using white light scanning interferometer, which is a 3D image measurement technique.

• Journal of Physiology & Pathology in Korean Medicine
• /
• v.26 no.3
• /
• pp.376-380
• /
• 2012

This study was designed to evaluate the effects of traditional korean herbal medicine(Jaumkunbi-tang) therapy on a hyperthyroidism patient. Clinical data was analyzed on a patient with hyperthyroidism whose main symptoms were fatigue, palpitation, up flame, hyperhidrosis, hypersomnia and dyspepsia. The patient visited our hospital 9 times from November 10, 2011 and remianed until January 30, 2012. He was treated with Jaumkunbi-tang, the traditional korean herbal medicine. After treatment, improvement was seen in clinical symptoms(such as fatigue, palpitation, up flame, hyperhidrosis, hypersomnia and dyspepsia) and thyroid function test. The study suggests that Jaumkunbi-tang, one of traditional korean herbal medicines, could be effective on the treatment of hyperthyroidism.

• Journal of Physiology & Pathology in Korean Medicine
• /
• v.29 no.5
• /
• pp.394-402
• /
• 2015

To evaluate the benefits of Hyangsayangyi-tang aqueous extracts (HSYYT) on the propylthiouracil (PTU)-induced Rat hypothyroidism. 6 groups, each consisting 8 Rats were used in the present study - Intact vehicle control, PTU control, LT₄, HSYYT 500, 250 and 125 ㎎/㎏ treated groups. HSYYT was given, once day for 42 days from 2 weeks before start of PTU treatment as an oral dose of 500, 250 and 125 ㎎/㎏(body weight), and for 28 days while the PTU 10 ㎎/㎏ by daily subcutaneous treatment induced hypothyroidism. Compared the results with LT₄ 0.5 ㎎/㎏ intraperitoneally treated rats in this experiment. Results of the PTU treatment included; decreases of body weight, increase in thyroid weight, decrease in liver weight, in serum T₃, and T₄ level decrease with increase of serum TSH levels, in serum HDL increase and in TG content decrease, decrease in liver antioxidants defense system, increase of serum AST levels were observed. However, these PTU induced hypothyroidism and related hepatic damages were dose-dependently inhibited by treatment of HSYYT 500 and 250 ㎎/㎏, and they also effectively regulated the PTU-induced abnormal antioxidant defense system changes in liver. Therefore, in comparison with the PTU control group, it was effective and advantageous changes were not observed in HSYYT 125 ㎎/㎏ treated rats on the PTU induced hypothyroidism and related hepatic damages. In this experiment, HSYYT 500 and 250 ㎎/㎏ dose-dependently inhibited PTU-induced hypothyroidism and related liver damage in rats but not in HSYYT 125 ㎎/㎏.

• Journal of Physiology & Pathology in Korean Medicine
• /
• v.19 no.3
• /
• pp.623-627
• /
• 2005

Abnormal thyroid cell proliferation has a very important role in hypothyroidism. Thyroid stimulating hormone (TSH) stimulates proliferation and maintains differentiated function in thyroid follicular cells. A functioning rat thyroid cell line (FRTL) was used to study the effect of Gamgung-tang (GGT, Glycyrrhizae Radix, black beans, Angelicae Radix and Cnidii Rhizoma) on proliferation and cAMP accumulation of thyrocytes. Proliferation of cell was assessed by DNA synthesis and incorporation of $[^3H]thymidine$ into DNA. The concentration of cAMP was measured simultaneously with growth assessment. Extract of GGT ($0.15{\sim}0.9\;mg/ml$ increased DNA synthesis in a dose-dependent manner. GGT at 0.6 (p<0.05) and 0.9 mg/ml (p<0.01) significantly increased $[^3H]thymidine$ incorporation. A comparable effect was observed with TSH. GGT also enhanced cAMP accumulation. These results indicate that GGT increases the proliferation of thyrocytes and may be considered a promising agent for the treatment of autoimmune thyroid disease.

• Journal of Physiology & Pathology in Korean Medicine
• /
• v.19 no.4
• /
• pp.934-937
• /
• 2005

Inflammatory cytokine, abundantly produced in Hashimoto's thyroiditis, induced Fas expression in normal thyrocytes. We determined that susceptibility to Fas-activated apoptosis could be influenced by inflammatory cytokine and investigated a potential role of Gamgung-tang (GGT, Glycyrrhizae Radix, black beans, Angelicae Radix and Cnidii Rhizoma) in the thyroid follicular cells. $IL-1\beta$ was able to induce Fas expression in normal thyrocytes. GGT inhibited $IL-1\beta-induced$ Fas expression. Thyroid follicular cells were found to undergo DNA fragmentation with the inflammatory cytokines. GGT inhibited DNA fragmentation in a dose-dependent manner. These results suggest that GGT inhibit Fas-mediated apoptosis in thyroid follicular cells, therefore, may have therapeutic potential in the treatment of autoimmune chronic thyroiditis.