자궁외 임신파열의 단순 복부 및 흉부X선 소견

하현권 대한영상의학회 1982 대한영상의학회지 Vol.18 No.4

Intraperitoneal bleeding caused by ruptured ectopic pregnancy is a serious obstetrical emergency requiring accurate and prompt diagnosis and treatment to save the life. The plain x-ray of the abdomen is simple and noninvasive method but a review of literature failed to disclose any previous systematic investigations and analysis of plain x-ray findings of ruptured ectopic pregnancies except well known sign of free fluid of peritoneal cavity which is obviously nonspecific. The present study has been undertaken to make a critical analysis of the plain addominal findings of ruptured ectopic pregnancies. In addition, plain chest film were evaluated to aid the diagnosis of hemorrhagic nature of peritoneal fluid. The materials consisted of 64 cases of surgically proven ruptured ectopic pregnancies seen at St. Mary's Hospital and Holy Family Hospital, Catholic Medical College, during the period of January 1979 through December 1980. The results of the study are as follows: 1. Intraperitoneal fluid smaller in amount than 1 liter appeared as comb-like, new-moon, half-moon and full-moon densities in the minor pelvis. As the amount exceeds 1 liter, widening of paracolic gutter and obliteration of the hepatic angle occurred. 2. Indentation and displacement of the bladder and rectum were present in 29 cases (45%). 3. Local ileus of considerable intensity occurred I LLQ and RUQ in 35%. Remakable gaseous distension of sigmoid colon were noted in 30%. 4. Blurring of psoas muscle shadow took place in 33% and scoliosis in 11%. The curvature of lumbar scoliosis was directed away from the ruptured site of pregnancy in the majority. 5. In the chest x-ray, the diamter of basal pulmonary artery appeared significantly reduced in acute group. On the other hand, the cardiothoracic ratio became slightly increased in non-acute group. These pulmonary arterial change and cardiomegaly seem to reflect acute and subacute blood loss, respectively.

PDP(Plasma Display Pannel) 공정 및 기술동향

하현권 한국공업화학회 2005 한국공업화학회 연구논문 초록집 Vol.2005 No.1

크론씨 병의 질병 활성도 평가에 있어서 CT의 유용성

하현권,김표년,이문규,Ha, Hyeon-Gwon,Kim, Pyo-Nyeon,Lee, Mun-Gyu 대한영상의학회 2001 대한영상의학회지 Vol.45 No.4

목적:크론씨 병 환자에서 질병 활성도를 반영하는 CT 소견을 알아보고,질병 활성도 평가에 있어서 CT의 유용성을 알아보고자 하였다. 대상과 방법:크론씨 병으로 진단된 36명의 환자에서 시행된 50예의 CT를 대상으로 하였다. 모든 환자에서 임상 소견을 바탕으로 Crohn ’s disease activity index (CDAI)를 구하였으며 아울러 C-reactive protein (CRP)수치를 조사하였다.CT는 임상적 질병 활성도를 모르는 상태로 분석하였으며,분석한 CT 소견은 침범 부위,과녁 징후의 유무,침범 된 장벽의 조영 증강 양상,침범 된 장벽의 증가된 조영 증강 유무,병변의 길이,장벽 비후의 두께,과혈관성의 유무,복수의 유무,임파절 비대 유무,지방섬유 증식의 유무,및 장 주변 침윤의 정도이었다. 각각의 CT 소견을 CDAI,CRP와 비교하였다. 결과:CDAI와 CRP 모두 유의하게 높았던 CT 소견은 과혈관성 (p=0.005,0.028),복수 (p=0.001,0.008),심한 장 주위 침윤 (p=0.009,0.003),40 cm 이상의 병변 길이 (p=0.001,0.001)였으며,CRP만 유의한 차이를 보였던 CT 소견은 비균질한 장벽의 조영 증강 (p=0.001),증가된 조영 증강 (p=0.042),과녁 징후 (p=0.031),심한 장벽 비후 (r=0.410,p=0.003)였다.그 외에 침범부위,임파절 비후,지방 섬유 증식의 유무는 CDAI와 CRP의 유의한 차이가 없었다. 결론:여러 CT 소견들이 크론씨 병의 활성도와 관련성이 있었으며,이러한 소견을 이용하면 CT가 크론씨 병의 활성도를 평가하는데 유용할 것으로 사료된다. Purpose: The purpose of this study is to determine the CT features indicating active disease as well as to evaluate the usefulness of CT in assessing disease activity in patients with Crohn's disease. Materials and Methods: Thirty-six patients with Crohn ’s disease underwent a total of 50 abdominal CT scans. To characterize clinical disease activity, the Crohn ’s disease activity index (CDAI) was calculated using clinical and laboratory patient data, and C-reactive protein (CRP), levels were also measured. Without knowledge of clinical disease activity, computed tomograms were evaluated in terms of site, target sign, degree of bowel wall enhancement, length, bowel wall thickness, extraluminal hypervascularity, ascites, lymphadenopathy, fibrofatty proliferation, and degree of pericolic or perienteric infiltration. Each finding was compared with the clinical parameters of disease activity. Results: Both CDAI and CRP were significantly higher in patients with hypervascularity (p=0.005 and 0.028,respectively), long length of involved bowel (p=0.001, 0.001), moderate to severe pericolic or perienteric infiltration (p=0.009, 0.003), or ascites (p=0.001, 0.008). Only CRP was significantly higher in those with heterogeneous bowel wall enhancement (p=0.001), marked bowel wall enhancement (p=0.042), target sign (p=0.031), or severe bowel wall thickening (r=0.410, p=0.003). For other CT findings such as the location, lymphadenopathy, and fibrofatty proliferation, there were no statistically significant differences in CDAI or CRP levels. Conclusion: A number of CT findings varied according to clinical disease activity. These findings are, therefore, useful for evaluating disease activity in patients with Crohn’s disease.

Trend of Diagnostic Imaging for Pancreas Cancer

하현권 대한외과학회 1991 대한외과학회 학술대회 초록집 Vol.1991 No.11

각종 여성골반질환의 자기공명 조직특이성 자기공명영상과 병리학적 소견 비교 연구

하현권,박용휘 가톨릭대학 (가톨릭신학대학) 대학원 1995 가톨릭大學醫學部 論文集 Vol.48 No.2

복부 둔산에 의한 소장파열이 단순 복부 X선 소견

하현권 대한영상의학회 1987 대한영상의학회지 Vol.23 No.2

Bowel rupture due to blunt abdomimal trauma is no longer rare, and is among the most challenging problems that confront the phasicians and radiologists. It is frequently difficult to diagnose because the symptoms may be trivial during the early stage and masked by more obvious, but less lethal injuries. It is well known that the roentgen examination of the abdomen is also of little value to exclude bowel rupture becasue of infrequency of positive findings and free gas. The plain films of 23 casesof jejunal rupture and 8 cases of ileal rupture wete evaluated to sort and diagnostic features of small bowel rupture caused by blunt abdominal trauma. 1. Free intraperitoneal gas was noted in 6 cases of jejunal rupture and 1 cases of ileal rupture, and definite radiological evidence of free intraperiftoneal fluid was present in 16 casesof patients.

Application of MR Imaging for Small Intestinal Diseases

하현권 ( Hyun Kwon Ha ) 대한소화기학회 2001 연수강좌 Vol.2001 No.-

Pin-hole 조준기를 이용한 골 신티그라피

손형선,하현권,이한진,박용휘 대한핵의학회 1981 핵의학 분자영상 Vol.15 No.1

소장 질환의 진단에서 경구 메틸셀룰로스를 사용한 바륨소장추적 검사의 유용성

박광보,하현권,김지훈,이승훈,정애경,이양섭,유홍상,김표년,이문규 대한영상의학회 1998 대한영상의학회지 Vol.38 No.1

Purpose: To evaluate the usefulness of modified Small Bowel Follow Through(SBFT) with oral administration ofmethylcellulose in patients with small bowel pathology. Materials and Methods: Between September 1995 and Fbmary1996, a total of 228 patients underwent modified SBFT ; in 71 of these, small bowel pathology was confirmed bysurgery(n=18), biopsy(n=29), or clinical diagnosis(n=24). After the administration of 150ml 70% w/v bariumsuspension the patient assumed the decubitus position for 5minutes and 600ml of 0.5% methylcellulose wasadministered. We measured transit time, time and frequency of flocculation, and the luminal diameter of thejejunum and ileum. Using four scales ("Excellent", "Good", "Fair", and "Poor"), three radiologists graded thequality of images. Results: Mean transit time was 142 minutes, and the maximum diameter of the jejunum and ileumwas 2.9cm and 2.1 cm respectively ; in 45 patients (63%) the examination was concluded within 2 hours. The qualityof images was excellent in 29 cases(41%), good in 30(42%), fair in 8(11%), and poor in 3(4%). Imagies relating toinflammatory and vascular diseases were graded as "good" or "excellent" in 92% and 89% of cases, respectively, andthe image quality of lesions of the jejunum and ileum were graded, respectively, as "good" or "excellent" in 96%and 63% of cases. Usig this modified technique, sensitivity and specificity were 90% and 99%, respectively.Conclusion: Modified SBFT with the oral administration of methylcellulose is a simple but highly sensitive methodof evaluating small bowel deseases. It is especially valuable in cases of inflammatory and vascular disease of thesmall intestine and lesions in the jejunum.lammatory and vascular disease of thesmall intestine and lesions in the jejunum.

바륨현탁액 투여후 메틸셀룰로스를 사용한 개조형 소장 바륨추적검사 : 전통적 바륨추적검사와의 비교

신지훈,하현권,박성태,윤수웅,김호성,김선미,정융기,김표년,이문규 대한영상의학회 1998 대한영상의학회지 Vol.39 No.1

Purpose : To compare modified small bowel follow-through (SBFT) using methylcellulose after the administration of barium suspension with a conventional series. Materials and Methods : In order to evaluate small bowel pathology, modified SBFT was performed in 155 patients during a 15 month period. All patients received 600mL of methylcellulose ; 98 had taken 250mL of 40% wt/vol barium suspension and 57 had taken 150mL of 70% barium. For the group of 98, the barium suspension was prepared by mixing barium powder with water (n=46) or with methylcellulose in(n=52). For comparison with a modified series, 49 patients who underwent conventional SBFT using 500mL of 40% wt/vol barium were also included. Image quality was rated by three radiologists as "poor", "fair", "good", or"excellent". We analyzed the relationship between image quality, transit time and small bowel pathology; the sensitivity and specificity of each technique was also determined. Results : Among the four techniques, modified SBFT with 250mL of 40% wt/vol barium suspension, prepared by mixing barium powder with methylcellulose, showed the best image quality ["excellent" result in 33 of the 52 patients (63%)] and shortest transit time to the cecum. The high image quality of this technique was not affected by the presence of small bowel pathology; its use resulted in the lowest incidence and slowest development of flocculation. The sensitivity (91-95%) of the three modified SBFT procedures was superior to that of a conventional series(76%), but there was no difference in specificity. Conclusion : Modified SBFT using methylcellulose after administering barium suspension with barium powder as a mixing agent is a simple technique. Its use easily improves the image quality and diagnostic accuracy of peroral SBFT.e quality and diagnostic accuracy of peroral SBFT.