• The Journal of Korean Society for Radiation Therapy
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• v.27 no.1
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• pp.1-11
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• 2015

Purpose : Evaluating absorbed dose related to 2D and 3D imaging confirmation devices Materials and Methods : According to the radiographic projection conditions, absorbed doses are measured that 3 glass dosimeters attached to the centers of 0', 90', 180' and 270' in the head, thorax and abdomen each with Rando phantom are used in field size $26.6{\times}20$, $15{\times}15$. In the same way, absorbed doses are measured for width 16cm and 10cm of CBCT each. OBI(version 1.5) system and calibrated glass dosimeters are used for the measurement. Results : AP projection for 2D imaging check, In $0^{\circ}$ degree absorbed doses measured in the head were $1.44{\pm}0.26mGy$ with the field size $26.6{\times}20$, $1.17{\pm}0.02mGy$ with the field size $15{\times}15$. With the same method, absorbed doses in the thorax were $3.08{\pm}0.86mGy$ to $0.57{\pm}0.02mGy$ by reducing field size. In the abdomen, absorbed dose were reduced $8.19{\pm}0.54mGy$ to $4.19{\pm}0.09mGy$. Finally according to the field size, absorbed doses has decreased by average 5~12%. With Lateral projection, absorbed doses showed average 5~8% decrease. CBCT for 3D imaging check, CBDI in the head were $4.39{\pm}0.11mGy$ to $3.99{\pm}0.13mGy$ by reducing the width 16cm to 10cm. In the same way in thorax the absorbed dose were reduced $34.88{\pm}0.93(10.48{\pm}0.09)mGy$ to $31.01{\pm}0.3(9.30{\pm}0.09)mGy$ and $35.99{\pm}1.86mGy$ to $32.27{\pm}1.35mGy$ in the abdomen. With variation of width 16cm and 10cm, they showed 8~11% decrease. Conclusion : By means of reducing 2D field size, absorbed dose were decreased average 5~12% in 3D width size 8~11%. So that it is necessary for radiation therapists to recognize systematical management for absorbed dose for Imaging confirmation. and also for frequent CBCT, it is considered whether or not prescribed dose for RT refer to imaging dose.

• Clinical and Experimental Pediatrics
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• v.46 no.11
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• pp.1095-1100
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• 2003

Purpose : Children with acute colonic diverticulitis(ACD), can be misdiagnosed with acute appendicitis. Methods : We reviewed 15 cases of ACD during five years, from January 1998 to June 2002 retrospectively. Results : Most patients(80%) with ACD in children presented with right lower quadrant pain. The primary diagnosis on admission was mostly acute appendicitis(87%), and all ACD in children occurred in the right colon. Fourteen patients were managed by conservative treatment including antibiotics. A follow-up study was performed in 15 patients. There were symptomatic recurrences in two patients, but no significant complication was noted. The frequency of ACD was 11.7 per 1000 acute appendicitis. Conclusion : ACD in children can mostly be cured by conservative treatment. It is prudent to choose the management through the diagnostic work up, including abdominal sonography and computed tomography, because there was no significant difference of clinical findings between ACD and acute appendicitis.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• v.9 no.2
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• pp.193-199
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• 2006

Purpose: The proper diagnosis of Meckel's diverticulum (MD) is difficult and delayed because of the variety of clinical manifestations. We reviewed clinical characteristics of symptomatic MD to facilitate early detection. Methods: We analyzed retrospectively the clinical manifestations, diagnostic tools, histopathological findings, and operative findings in 58 patients with symptomatic MD. Results: The male to female ratio was 2.8 : 1. The most common symptom of MD was bleeding. Others symptoms included: vomiting, abdominal pain, irritability, abdominal distension and fever in the order of frequency. The clinical manifestations of symptomatic MD were lower gastrointestinal bleeding, intestinal obstruction, perforation, diverticulitis and hemoperitoneum, in the order of frequency. The causes of intestinal obstruction were intussusception, internal hernia, band, volvulus, invagination, in the order of frequency. Seventy five percent of patient with MD were diagnosed prior to 5 years of age. The most frequently used diagnostic tool was the Meckel's scan. The diverticulum was located 2 cm to 120 cm proximal to the ileocecal valve. The length of the diverticulum ranged from 1 cm to 10 cm and 94% were less than 5 cm. The most common ectopic tissue found in the MD was gastric mucosa. Ileal resection was more frequently performed than diverticulectomy. Conclusion: In cases of unexplained gastrointestinal bleeding, obstruction and repeated intussusception, the meckel's scan, ultrasound and computed tomography shoud be considered to rule out MD, and if clinically necessary, an exploratory laparotomy when needed.

• Journal of Chest Surgery
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• v.35 no.7
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• pp.568-572
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• 2002

We present a case of a 47-year-old woman with benign solitary fibrous tumor of the pleura originated in the diaphragm which was discovered incidentally on a chest radiograph. Chest radiograph, sonograph, computed tomographic scan and magnetic resonance image studies proved a well circumscribed and lobulated fibrous tumor of the pleura. During the subsequent right thoracotomy, the tumor was found to be encapsulated and consisted of firm mass. It was connected to the diaphragm with $5{\times}4$cm area by pedicle. Most of the tumor was free of adhesion. It was excised completely together with attached diaphragm. The tumor measured $23.5{\times}13.5{\times}8.0$cm and the pathologic diagnosis was benign solitary fibrous tumor and the attached diaphragm was free of disease.

• Journal of Veterinary Clinics
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• v.28 no.3
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• pp.336-338
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• 2011

A 5-day-old male Korean native calf was referred with the primary complaint of anorexia, absence of feces, depression, and abdominal distention. Although this case was tentatively diagnosed as atresia coli, plain and contrast radiography was performed to confirm site and appearance of obstruction. A plain radiograph revealed gas distension in the large intestine, with absence of fecal material in the descending colon. In a contrast radiograph, the blind part of descending colon that was accumulated with contrast media smoothly protruded to distended colon with gas and the middle part was seen as narrow. These findings were well corresponded with the mucosal blockage junction between distended spiral loop with gas and descending colon that was hypoplasia or atropy in necropsy. In conclusion, contrast radiography was considered very useful method to identify the site and type of obstruction in diagnosis of atresia coli.

• Journal of Chest Surgery
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• v.43 no.1
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• pp.100-103
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• 2010

We report her on a rare case of a renal stent that migrated into the right ventricle in a patient with nutcracker syndrome. A 29-year-old woman was admitted to the hospital and she was suffering from flank pain. The computed tomography of the abdomen demonstrated that the left renal vein was compressed between the abdominal aorta and the superior mesenteric artery (nutcracker syndrome). A self expandable stent was placed across the left renal vein for treating her nutcracker syndrome. The next day after the procedure, the follow up chest radiograph showed that the displaced stent had migrated into the right ventricle. After percutanous endovascular stent removal had failed, the stent was ultimately removed by performing cardiac surgery. At the $6^{th}$ postoperative month, there have been no abdominal or cardiac symptoms.

• Journal of Digital Convergence
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• v.11 no.7
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• pp.237-242
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• 2013

When abdomen and pelvic were scanned with 128 channel MDCT, the gonadal exposure dose was measured with and without gonadal shield and the obtained images were evaluated. As a result, during abdominal MDCT scan, the gonadal exposure dose was measured $16.5{\pm}0.5$ mGy when the gonad shield was not used, and it was $7.5{\pm}0.3$ mGy when the large gonad shield($650m^2$) was used, which showed the effect of reduction in the gonadal exposure dose by 54%. During pelvic MDCT scan, the gonadal exposure dose was $9.5{\pm}0.3$ mGy when the gonad shield was not used, and it was $2.8{\pm}0.2$ mGy when the large gonard shield($650m^2$) was used, which showed the effect of reduction in the gonadal exposure dose by 70%. The images were obtained when using the gonad shield and when not using it during MDCT scan, and as a result of analyzing them with 5-point Likert scale, in the abdominal image, it was 4.1 points irrespective of whether using the gonad shield or not. And also, in pelvic scan, it was 1.2 points when the gonad shield was used, and 4.1 points when it was not used. With the results above, it is considered that during the abdominal 128-MDCT scan, by using the gonad shield, the images should be obtained without being degraded and the exposure dose must be reduced.

• Journal of radiological science and technology
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• v.19 no.2
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• pp.59-65
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• 1996

We studied exposure techniques and exposure dose for simple abdomen A-P projection for 41 medical facilities that are located in Seoul area. 1. The range of tube voltage used was 60 to 84 kVp, the average tube voltage used was 74 kVp 2. Only 17% of added filter was used. 3. Tube current mostly used was 200 mA, some of them used 400 mA. 4. The grid ratio mostly was used 10 : 1, 54 % of the rare earth screen was used in most facilities. 5. The average skin entrance dose was 4.15 mSv and the dose range was 1.05 mSv to 11.0 mSv.

• The Korean Journal of Nuclear Medicine
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• v.26 no.1
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• pp.151-154
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• 1992

갈색종은 비교적 드문 종양으로 다발성으로 생기는 경우는 더욱 드물다. 갈색종은 수술로 90%이상 완치 가능한 질환이므로 수술전 종양의 위치와 범위를 정확히 확인하는 것 이 매우 중요하다. 저자들은 최근 파동하는 고혈압을 주소로 내원한 33세 남자환자에서 복부전산화 단층촬영술상 우측부신의 종양만을 확인할 수 있었으나, $^{131}I-MIBG$ 신티그라피에서는 우측 부신의 병소외에 골반강 내에 또다른 병소가 발견되어 골반강 전산화 단층촬영술을 추가로 시행하였고 이어 수술로써 확진된 이중병소의 갈색종 1예를 보고하는 바이다.

• Journal of Yeungnam Medical Science
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• v.4 no.1
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• pp.133-137
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• 1987

Myopathy in primary aldosteronism is relatively rare disease in Korea. A 42-year-lod woman with hypokalemic periodic paralysis, proximal muscle weakness and hypertension was found to have myopathy associated with adenoma in the right adrenal gland. She showed marked elevation of muscle enzymes and myopathic pattern in EMG.