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Voxel-based statistical analysis of regional cerebral glucose metabolism in children with attention-deficit hyperactivity disorder

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Neural Regeneration Research 2011年第36期6卷 2850-2855页

作者： ji-hoon kim Young-In Chung Jung Sub Lee In-Joo kim Yong-Ki kim Seong-Jang kim Division of Child-Adolescent Psychiatry Department of Psychiatry Pusan National University School of Medicine Yangsan-si Gyeongnam Republic of Korea Medical Research Institute Pusan National University School of Medicine Yangsan-si Gyeongnam Republic of Korea Department of Psychiatry Pusan National University School of Medicine Yangsan-si Gyeongnam Republic of Korea Department of Orthopedic Surgery Pusan National University School of Medicine Yangsan-si Gyeongnam Republic of Korea Department of Nuclear Medicine Pusan National University School of Medicine Yangsan-si Gyeongnam Republic of Korea

The technique of region of interest-based positron emission tomography is limited by its poor reli-ability and relatively few examined brain regions. In the present study, we compared brain metabo-lism assessed using fluorine-18-fluorodeoxyglucose positron emission tomography between 14 at-tention-deficit hyperactivity disorder （ADHD） patients and 15 normal controls with scoliosis at resting state by statistical parametric mapping. Glucose metabolism was decreased in the left parahippo-campal gyrus, left hippocampus, left anterior cingulate gyrus, right anterior and posterior lobes of the cerebellum, left superior temporal gyrus, left insula, left medial and middle frontal gyri, right medial frontal gyrus, and left basal ganglia （putamen, amygdala, and caudate nucleus） in children with ADHD. These data suggest that children with ADHD exhibit hypometabolism in various brain regions compared to controls, indicating that ADHD symptoms are unlikely the result of abnormalities in specific areas.

关键词： attention-deficit hyperactivity disorder positron emission tomography statistical parametric mapping

Tailoring strength-ductility balance of caliber-rolled AZ31 Mg alloy through subsequent annealing

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Journal of Magnesium and Alloys 2020年第1期8卷 163-171页

作者： Taein Kong Byung Je Kwak Jonghyun kim Jeong Hun Lee Sung Hyuk Park ji hoon kim Young hoon Moon Hyun Sik Yoon Taekyung Lee School of Mechanical Engineering Pusan National UniversityBusan 46241Republic of Korea Advanced Forming Process R&D Group Korea Institute of Industrial TechnologyUlsan 44413Republic of Korea College of Materials Science and Engineering Chongqing UniversityChongqing 400044China School of Materials Science and Engineering Kyungpook National UniversityDaegu 41566Republic of Korea Department of Naval Architecture and Ocean Engineering Pusan National UniversityBusan 46241Republic of Korea

Recently,multi-pass caliber rolling has been shown to be effective for Mg *** study investigated the effect of subsequent annealing on the mechanical properties of a caliber-rolled AZ31 Mg alloy to modulate the strength-ductility *** annealing gave rise to different trends in mechanical properties depending on the temperature ***-temperature annealing(T≤473 K)exhibited a typical trade-off relationship,where an increase in annealing temperature resulted in increased ductility but decreased strength and *** a heat treatment did not degrade the high strength-ductility balance of the caliber-rolled alloy,suggesting that the mechanical properties could be tailored for different potential *** contrast,high-temperature annealing(T>473 K)caused a simultaneous deterioration in strength,hardness,and ductility with increasing annealing *** differences are discussed in terms of the varying microstructural features under the different investigated annealing regimes.

关键词： AZ31 Mg alloy Caliber rolling Annealing Grain growth Mechanical improvement Twinning

Risk factors for computed tomography interpretation discrepancy in emergently transferred patients

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World Journal of Emergency Medicine 2022年第1期13卷 54-58页

作者： Hyun Sim Lee jinwoo Myung Min ji Choi Hye Jung Shin Incheol Park Sung Phil Chung ji hoon kim Department of Emergency Nursing Yonsei University Health systemSeoul 03722the Republic of Korea Department of Emergency Medicine College of MedicineYonsei UniversitySeoul 03722the Republic of Korea Department of Biostatistics Collaboration Unit College of MedicineYonsei UniversitySeoul 03722the Republic of Korea Department of Preventive Medicine and Public Health College of MedicineYonsei UniversitySeoul 03722the Republic of Korea

Radiologic imaging is a diagnostic tool that greatly affects patient outcomes,[1]and with the recent development of imaging technology,advanced imaging tests such as computed tomography(CT)have gained widespread accessibility in *** particular,CT is essential in the evaluation of patients in low-level emergency departments(EDs)because of its ability to answer clinical questions accurately and quickly.[2]

关键词： patients transferred clinical

Removal of press-through-packs impacted in the upper esophagus using an overtube

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World Journal of Gastroenterology 2006年第36期12卷 5909-5912页

作者： Yeon Seok Seo Jong-Jae Park ji hoon kim jin Yong kim Jong Eun Yeon Jae Seon kim Kwan Soo Byun Young-Tae Bak Department of Internal Medicine Korea University Medical Center Guro Hospital Seoul Korea Department of Internal Medicine Sungkyunkwan University School of Medicine Seoul Korea

Foreign bodies in the upper esophagus should be re-moved as soon as possible to avoid serious complica-tions. However, removals of foreign bodies in the upper esophagus are very difficult, especially if they have sharp edges, such as press-through-packs (PTPs). We expe-rienced four cases of the impacted PTPs in the upper esophagus which was successfully extracted endoscopi-cally with the overtube. Because two edges of PTPs were so firmly impacted in the esophageal wall in all cases, the PTPs were not movable in the upper esophagus. However, after insertion of the overtube, PTPs became movable and were successfully extracted and no serious complications occurred after extraction of PTPs. In one case, insertion of the overtube rapidly expanded the up-per esophagus and PTP progressed to the gastric cavity and it could be extracted with the endoscopic protector hood. The endoscopic removal with the overtube was a simple, safe and effective technique for the removal of the impacted PTPs in upper esophagus.

关键词： Esophagus Foreign body Endoscopy

CT and MR imaging findings of ocular adnexal mucosa-associated lymphoid tissue lymphoma associated with IgG4-related disease: multi-institutional case series

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International Journal of Ophthalmology(English edition) 2020年第8期13卷 1231-1237页

作者： Roh-Eul Yoo Sun-Won Park Jung Hyo Rhim ji Eun kim Soo Chin kim ji-Young Choe Ho-Kyung Choung Sang In Khwarg ji-hoon kim Jeong Hyun Lee Bo Eun Lee Yeonah Kang Department of Radiology Seoul National University College of MedicineSeoul 03080Republic of Korea Department of Radiology Seoul National University HospitalSeoul 03080Republic of Korea Department of Radiology Seoul Metropolitan Government Seoul National University Boramae Medical CenterSeoul 07061Republic of Korea Department of Pathology Seoul Metropolitan Government Seoul National University Boramae Medical CenterSeoul 07061Republic of Korea Department of Pathology Seoul National University College of MedicineSeoul 03080Republic of Korea Department of Radiology Asan Medical CenterSeoul 05505Republic of Korea Department of Pathology Hallym University Sacred Heart HospitalAnyang14068Republic of Korea Department of Ophthalmology Seoul Metropolitan Government Seoul National University Boramae Medical CenterSeoul 07061Republic of Korea Department of Ophthalmology Seoul National University College of MedicineSeoul 03080Republic of Korea Department of Radiology Ulsan University College of MedicineSeoul 05505Republic of Korea Department of Radiology Inje University Haeundae Paik HospitalBusan 47392Republic of Korea

AIM:To report CT and MR imaging findings of ocular adnexal mucosa-associated lymphoid tissue lymphoma associated with IgG4-related disease(IgG4-MALT lymphoma),a rare but clinically important complication of ocular adnexal IgG4-related ***:We retrospectively reviewed all cases of histologically confirmed ocular adnexal IgG4-related disease at three ter tiary and one secondary referral centers,between February 2003 and December *** cases of histopathologically diagnosed IgG4-MALT lymphoma were *** and MR images were analyzed by consensus of two experienced head and neck ***:Lacrimal glands were the main site of involvement in all seven *** lesions typically showed well-demarcated margins,iso-to hyperattenuation on precontrast CT,T2 hypo-to isointensity,T1 isointensity,and homogenous internal architecture with homogenous enhancement *** were mostly hyperdense and isointense to normal extraocular muscles on postcontrast CT and MR images,***:Unlike in typical ocular adnexal IgG4-related disease,T2 isointensity and hyperattenuation on precontrast CT images were noted in some IgG4-MALT lymphoma *** the findings may be nonspecific,the possibility of accompanying MALT lymphoma may need to be considered,when ocular adnexal lesions in patients clinically suspected of having IgG4-related disease are refractory to glucocorticoids and show T2 isointensity and hyperattenuation on precontrast CT for the optimal management of the ***,this is a case series of a very rare complication of ocular adnexal IgG4-related disease,and thus caution is warranted to generalize the conclusion.

关键词： CT IgG4-related disease MR ocular adnexal mucosa-associated lymphoid tissue lymphoma

Antiviral efficacy of adefovir dipivoxil versus lamivudine in patients with chronic hepatitis B sequentially treated with lamivudine and adefovir due to lamivudine resistance

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World Journal of Gastroenterology 2007年第30期13卷 4072-4079页

作者： Yeon Seok Seo ji hoon kim Jong Eun Yeon Jong-Jae Park Jae Seon kim Kwan Soo Byun Young-Tae Bak Chang Hong Lee Division of Gastroenterology and Hepatology Department of Internal Medicine Korea University College of Medicine Seoul Korea Division of Gastroenterology and Hepatology Department of Internal Medicine Konkuk University College of Medicine Seoul Korea

AIM： To compare the antiviral efficacy of adefovir （ADV） in lamivudine （LMV）-resistant patients with LMV treatment in nucleoside-naive patients, using serum samples collected sequentially during the course of treatment progressing from LMV to ADV.METHODS： Forty-four patients with chronic hepatitis B （CHB） were included. The patients were initially treated with LMV and then switched to ADV when LMV resistance developed. Antiviral efficacy was assessed by measuring the following： reduction in serum HBV DNA from baseline, HBV DNA negative conversion （defined as HBV DNA being undectable by the hybridization assay）, and HBV DNA response （either HBV DNA level ≤ 10^s copies/mL or a ≥ 2 log10 reduction from baseline HBV DNA level）.RESULTS： After two and six months of treatment, HBV DNA reduction was greater with LMV compared to ADV treatment （P = 0.021）. HBV DNA negative conversion rates were 64% and 27% after one month of LMV and ADV treatment respectively （P = 0.001）. Similarly, HBV DNA response rates were 74% and 51% after two months of LMV and ADV treatment respectively （P = 0.026）. The time taken to HBV DNA negative conversion and to HBV DNA response were both delayed in ADV treatment compared with LMV.CONCLUSION： The antiviral efficacy of ADV in LMV-resistant patients is slower and less potent than that with LMV in nucleoside-naive patients during the early course of treatment.

关键词： Chronic hepatitis B Lamivudine Adefovir Treatment efficacy

Upper gastrointestinal bleeding from duodenal vascular ectasia in a patient with cirrhosis

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World Journal of Gastroenterology 2007年第38期13卷 5154-5157页

作者： Beom Jae Lee Jong-Jae Park Yeon Seok Seo ji hoon kim Aeree kim Jong Eun Yeon Jae Seon kim Kwan Soo Byun Young-Tae Bak Division of Gastroenterology Department of Internal Medicine Korea University College of Medicine Seoul Korea

We report a cirrhotic patient with duodenal vascular ectasia and spontaneous bleeding. The bleeding was successfully controlled with argon plasma coagulation. Duodenal vascular ectasia may be a cause of upper gastrointestinal bleeding in patients with cirrhosis, and argon plasma coagulation may be effective and safe to achieve hemostasis of this lesion.

关键词： Vascular ectasia Duodenum Cirrhosis Gastrointestinal hemorrhage Hemostasis

How good is cola for dissolution of gastric phytobezoars?

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World Journal of Gastroenterology 2009年第18期15卷 2265-2269页

作者： Beom Jae Lee Jong-Jae Park hoon Jai Chun ji hoon kim Jong Eun Yeon Yoon Tae Jeen Jae Seon kim Kwan Soo Byun Sang Woo Lee Jae Hyun Choi Chang Duck kim Ho Sang Ryu Young-Tae Bak Division of Gastroenterology Department of Internal MedicineKorea University College of MedicineSeoul 152-703South Korea

AIM:To evaluate the efficacy of cola treatment for gastric phytobezoars,including ***:A total of 17 patients(range:48 to 78 years) with symptomatic gastric phytobezoars treated with cola and adjuvant endoscopic therapy were *** liters of cola lavage(10 cases) or drink(7 cases) were initially used,and then endoscopic fragmentation was done for the remnant bezoars by using a lithotripsy basket or a polypectomy *** overall success of dissolving a gastric phytobezoars with using three liters of cola and the clinical and endoscopic findings were compared retrospectively between four cases of complete dissolution by using only cola and 13 cases of partial dissolution with ***:After 3 L of cola lavage or drinking,a complete dissolution of bezoars was achieved in four patients(23.5%),while 13 cases(76.5%) were only partially ***(4 of 6 cases) were observed more frequently than diospyrobezoars(0 of 11) in the group that underwent complete dissolution(P = 0.006).Gender,symptom duration,size of bezoar and method of cola administration were not significantly different between the two *** of 13 patients with residual bezoars were completely treated with a combination of cola and endoscopic ***:The rate of complete dissolution with three liters of cola was 23.5%,but no case of diospyrobezoar was completely dissolved using this ***,pretreatment with cola may be helpful and facilitate endoscopic fragmentation of gastric phytobezoars.

关键词： Gastric phytobezoars Diospyrobezoars Cola Dissolution Clinical efficacy

Inverted cystic tubulovillous adenoma involving Brunner’s glands of duodenum

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World Journal of Gastroenterology 2007年第23期13卷 3262-3264页

作者： ji hoon kim Jung Woo Choi Yeon Seok Seo Beom Jae Lee Jong Eun Yeon Jae Seon kim Kwan Soo Byun Young-Tae Bak Insun kim Jong- Jae Park Division of Gastroenterology Department of Internal Medicine Korea University College of Medicine Seoul South Korea Department of Pathology Korea University College of Medicine Seoul South Korea

Benign neoplasia of the duodenum are very rare. Moreover, duodenal tubulovillous adenomas are more uncommon lesions. The microscopic structure of tubulovillous adenoma has frond-like projection of mucosa with branching papillary structure and generally upward growth into the lumen. We describe a 72-year-old man who showed aduodenal tubulovillous adenoma with unusual inverted cystic growth pattern. Interestingly, this tubulovillous adenomatous lesion was interrupted by gastric metaplasia in the deep portion of the cyst and was closely surrounded by Brunner’s glands. Although histogenesis of gastric metaplasia of duodenum is not fully understood, Brunner’s glands has been suggested as a precursor for gastric metaplasia. Therefore, these findings argued that this adenoma arises from Brunner’s glands through gastric metaplasia. This is the first case of inverted cystic tubulovillous adenoma involving Brunner’s glands of duodenum with gastric metaplasia.

关键词： Brunner's glands Duodenum Gastric metaplasia Tubulovillous adenoma