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유시준 대한영상의학회 1984 대한영상의학회지 Vol.20 No.2
Mach bands, a visual phenomenon resulting from lateral inhibitory impulses in the retina are recognized as lucent or dense lines at the borders of different radiographic densities. A number of clinical situations have been described in which mach bands may cause difficulty in radiographic diagnosis. Photodensitometric measurement of the film can differentiate the true change in film density from the Mach band which is an optical illusion, Authors present several examples of photodensitometric tracings of Mach bands, with the brief review of the mechanism of their production.
계태에서의 31P 자기공명분석법을 이용한 인대사변화의 추적
홍창의,임태환,이정희,이대근,유시준 울산대학교 의과대학 1994 울산의대학술지 Vol.3 No.2
Chick embryo is a convenient model for embryologic teratologic studies. We performed the present experimental study to establish the basic technology for magnetic resonance studies of chick embryos and to examine the biochemical changes occurring during the development of chick embryos. Fertilized Leghorn eggs were examined by 31-phosphours magnetic resonance spectroscopy (??P-MRS) on days 6, 9, 12, 14, 15, 17 and 20 after the start of incubation. Spectroscopic data of live embryos were acquired by using a 4.7T MR spectrometer, and signals from phosphorous metabolites were analyzed. Total phospholipid signal decreased, which resulted in the overall decrease in total phosphorous signal over time. Signals from other metabolites such as ATPs and phosphocreatine increased over time, while those from inorganic phosphate and sugar phosphates decreased. Before the incubation days 12, signals from sugar phosphates and inorganic phosphate were predominant, and other metabolites became remarkably functional between the days 12 and 14 when the decrease in the phospholipid signal was significant. MR specrtroscopy is an effective method in evaluation of the biochemical changes occurring during the developmental period of chick embryos.
최병욱,조용필,유시준,김인구,민병철,Choi, Byung-Uk,Cho, Yong-Pil,Yoo, Shi-Joon,Kim, In-Koo,Min, Pyung-Chul 대한소아외과학회 1996 소아외과 Vol.2 No.1
Congenital duplication of the gallbladder, including true duplication and septated gallbladder, is an uncommon but potentially complicated malformation. It presents biliary colic associated with acute or chronic cholecystitis. It can be diagnosed preoperatively by various imaging tools such as real-time ultrasonography, biliary scintigraphy, oral cholecystography, or endoscopic retrograde cholangiography. It can be safely managed by either laparoscopic or open procedures. This report describes a 6-year-old girl with true duplication of gallbladder diagnosed preoperatively by real-time ultrasonography and treated by open cholecystectomy.
강정훈,고경석,유시준,원혜성,이인식,김 암 大韓成形外科學會 1997 Archives of Plastic Surgery Vol.24 No.5
Cleft lip & palate are the most frequent manifestation of facial malformations. Fetuses with cleft lip & palate have a much higher incidence of multiple malformations and chromosomal aberrations than neonates with cleft lip & palate. Thus, ultrasonography of the fetal face has become important for the detections of major syndromal malformations or chromosomal disorders. Especially in cases with a family history of cleft lip & palate, we should confirm or exclude the diagnosis and associated anomalies have to be ruled out when cleft lip & palate are present Positive findings have different clinical outcomes and obstetrical implications. We detected five fetuses with cleft lip & palate, using ultrasonography. We taught to their parents about disease entities, operative schedules with complications and sequelaes, and feeding, etc.. Also, we performed genetic counseling for other malformations and chromosomal disorders in case with a history of stillbirth of fetus with cleft lip & palate. Our teaching and genetic counseling provided early cognitive, emotional and behavioral supports to mother. Also, a recent development of the fetal endoscopic surgery in life threatening conditions has raised the possibility of fetal cleft lip & plate repairs. This sophisticated prenatal diagnostic imaging will play the basic and important roll in the progression of endoscopic fetal surgery in plastic surgery.
산전 초음파검사로 진단된 범발성 태변성 복막염 2예보고
김성철,황신,유시준,김인구,Kim, Soong-Chul,Hwang, Shin,Yoo, Shi-Joon,Kim, In-Koo 대한소아외과학회 1995 소아외과 Vol.1 No.1
Meconium peritonitis is defined as an aseptic, chemical or foreign-body peritonitis caused by spill of meconium in the abdominal cavity related to the prenatal perforation of the intestine. Perforation is usually caused by obstruction from meconium ileus, intestinal atresia, stenosis, volvulus, internal hernia, congenital peritoneal bands, intussusception, or gastroschisis. Less commonly, no evidence of distal obstruction exists. Here, we present two cases of generalized meconium peritonitis of antenatal diagnosis. The first case, detected at 8 months of gestational age, had a perforation of the proximal blind pouch of jejunal atresia, associated with respiratory distress due to severe abdominal distension. This case was successfully treated with resection and anastomosis and brief period of postoperative ventilatory support. The second case had a distal ileal perforation with thick meconium in the terminal ileum. In this case, there was no dilatation of ileum proximal to the perforation site. Resection and anastomosis was performed and postoperative course was uneventful.