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( Sungkeun Kim ),( Hee Yeon Kim ),( Chang Wook Kim ),( Ji Young Kim ),( Aran Hong ),( Su Lim Lee ),( Yoo Dong Won ) 대한간학회 2018 춘·추계 학술대회 (KASL) Vol.2018 No.1
Aims: Transcatheter arterial chemoembolization (TACE) for hepatocellular carcinoma (HCC) in patients with aortic dissection is a potentially risky and demanding technique. Access to the true aortic lumen might not be allowed by the arterial entry route chosen. Methods: Here we report a case of repeated sessions of TACE through true and false lumens in a HCC patient with chronic aortic dissection. Results: A 56-year old male presented with infiltrative HCC with right portal vein tumor thrombosis. Abdominal computer tomography scan also revealed an incidental asymptomatic aortic dissection involving descending aorta from proximal segment to superior mesenteric artery (SMA) origin level. Celiac trunk was supplied by false lumen, and SMA was supplied by true lumen. On SMA angiography, right hepatic artery was originated from SMA. HCC was supplied by segment 7 and 8 branch of right hepatic artery. Infusion of adriamycin and lipiodol mixture and subsequent embolization was performed to superior branches of right hepatic artery. Catheterization to celiac axis was failed due to its origin from pseudolumen caused by aortic dissection. Complete response was achieved after sequential radiation therapy. After 1 year, nodular HCC recurred at segment 4. On this session of repeated TACE, catheterization to false lumen was successful. Left hepatic angiography showed tumor stain supplied by segment 4 branch, and embolization was performed. One year later, viable portion was noted in infiltrative HCC at segment 7. Repeated TACE was performed to embolize segment 7 branch supplying infiltrative tumor. Conclusions: In this case, we presented our experience with selective hepatic angiography and SMA angiography in a HCC patient with descending aortic dissection. To our knowledge, this is the first description of hepatic angiography using true and false lumen in a HCC patient with a concomitant aortic dissection.
A Case of Acute Hemoperitoneum Due to Spontaneous Rupture of the Umbilical Vein in Cirrhosis
( Sungkeun Kim ),( Hee Yeon Kim ),( Chang Wook Kim ),( Ji Young Kim ),( Aran Hong ),( Su Lim Lee ),( Yoo Dong Won ) 대한간학회 2018 춘·추계 학술대회 (KASL) Vol.2018 No.1
Aims: In patients with portal hypertension, acute hemoperitoneum due to spontaneous rupture of umbilical vein was rarely reported. We report a case of spontaneous rupture of umbilical in a cirrhotic patient without extrinsic trauma history. Methods: A 50-year-old male without previous trauma was transported to the emergency department after experiencing sudden crampy whole abdominal pain. Results: He has had a regular check up for liver cirrhosis. The abdomen was distended with generalized tenderness but without peritoneal signs. Laboratory data showed a hemoglobin of 6.8 g/dl; the white blood cell count was 13260/mm3 and the platelets were 128000/mm3. Liver function tests were normal, except for aspartate aminotransferase 70 U/L, a prothrombin time of 18.5 s, with a control of 11.2, and an albumin of 2.2 mg/dl. Abdominal CT scan showed a umbilical vein with a massive contrast leakage to the peritoneum and the presence of a large amount of hemoperitoneum. An emergent angiographic embolization procedure was performed to stop bleeding from paraumbilical vein. The patient recovered well after angiographic embolization procedure and was discharged home on the sixth day after the procedure. Conclusions: In a cirrhosis patient who has rapid onset of abdominal distention and pain, as well as hypotension and tachycardia, intraperitoneal hemorrhage must be considered. Computed tomography scan typically represent a dilated umbilical vein and periumbilical contrast leakage. Early recognition and their intervention with embolization of the ruptured vessel are critical for the successful management of these patients.
Kim, Aran,Lee, Hyemi,Ryu, Choonghan,Cho, Sung Min,Chae, Heeyeop American Scientific Publishers 2010 Journal of Nanoscience and Nanotechnology Vol.10 No.5
<P>In this work, a nanoscale thick organic light emitting MEH-PPV (poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene]layer) was realized by gravure printing technology and its roughness was controlled by the solvent printing process. Also, an organic light emitting diode (OLED) was successfully fabricated by the gravure printing of MEH-PPV layers with surface treatments of solvent printing. There is strong demand for high throughput and large area processing technology for the commercialization of OLEDs and the gravure printing process is a good candidate. We applied gravure printing process technology to OLED fabrication in this work. We controlled the thickness of the organic layers by the multi-printing technique. To control the roughness of the MEH-PPV organic layer, solvent printing was proposed in this work with various solvent mixture of chloroform, chlorobenzene and 1,2-dichlorobenzene on the top of the gravure printed MEH-PPV layers and a significant reduction in roughness was achieved. We were able to achieve a 51 nm thick and 3.7 nm rough MEH-PPV layer with the gravure printing process and subsequent solvent printing treatment and an OLED was fabricated using the gravure printed organic layers. An improvement of the brightness and efficiency was observed due to the improved roughness of the organic layers.</P>
Aran Min,Johanna Inhyang Kim,Hak Jong Noh,Moon Sang Kim,Hyo-Shin Lee,Mun-Taek Choi,Kyuha Lee,Jun-Ho Seo,Ga Hyun Lee,Seong-kyu Kang,Dong Hyun Ahn 대한신경정신의학회 2021 PSYCHIATRY INVESTIGATION Vol.18 No.7
Objective Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by inattention, hyperactivity, and impulsivity. In contrast to neurocognitive measurements of inattention and impulsivity, there has been limited research regarding the objective measurement of hyperactivity in youths with ADHD. The purpose of the present study was to investigate the clinical effectiveness of a newly developed Robot-assisted Kinematic Measure for ADHD (RAKMA) in children with ADHD. Methods In total, 35 children with ADHD aged 5 to 12 years and 50 healthy controls (HCs) were recruited, and the parents completed the Child Behavior Checklist and the Korean ADHD Diagnostic Scale. RAKMA performance was represented by RAKMA stimulus-response and hyperactivity variables. We compared the RAKMA performance of those with ADHD and with that of HCs and also investigated the correlation between the RAKMA variables and ADHD clinical scale scores. Results Significant differences between the ADHD and HC groups were observed regarding most RAKMA variables, including correct reactions, commission errors, omission errors, reaction times, migration distance, and migration speed scores. Significant correlations were detected between various ADHD clinical scale scores and RAKMA variables. Conclusion The RAKMA was a clinically useful tool for objectively measuring hyperactivity symptoms in children with ADHD. Further studies with larger samples are warranted.