1.Update of Diagnostic Evaluation of Craniosynostosis with a Focus on Pediatric Systematic Evaluation and Genetic Studies.
Su Kyeong HWANG ; Ki Su PARK ; Seong Hyun PARK ; Sung Kyoo HWANG
Journal of Korean Neurosurgical Society 2016;59(3):214-218
Most craniosynostoses are sporadic, but may have an underlying genetic basis. Secondary and syndromic craniosynostosis accompanies various systemic diseases or associated anomalies. Early detection of an associated disease may facilitate the interdisciplinary management of patients and improve outcomes. For that reason, systematic evaluation of craniosynostosis is mandatory. The authors reviewed systematic evaluation of craniosynostosis with an emphasis on genetic analysis.
Craniosynostoses*
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Diagnosis
;
Humans
2.A Method for Creating Teaching Movie Clips using Screen Recording Software: Usefulness of Teaching Movies as Self-learning Tools for Medical Students.
Journal of the Korean Radiological Society 2007;56(4):395-402
PURPOSE: I wanted to describe a method to create teaching movies with using screen recordings, and I wanted to see if self-learning movies are useful for medical students. MATERIALS AND METHODS: Teaching movies were created by direct recording of the screen activity and voice narration during the interpretation of educational cases; we used a PACS system and screen recording software for the recording (CamStudio, Rendersoft, U.S.A.). The usefulness of teaching movies for self-learning of abdominal CT anatomy was evaluated by the medical students. RESULTS: Creating teaching movie clips with using screen recording software was simple and easy. Survey responses were collected from 43 medical students. The contents of teaching movie was adequately understandable (52%) and useful for learning (47%). Only 23% students agreed that these movies helped motivated them to learn. Teaching movies were more useful than still photographs of the teaching image files. The students wanted teaching movies on the cross-sectional CT anatomy of different body regions (82%) and for understanding the radiological interpretation of various diseases (42%). CONCLUSION: Creating teaching movie by direct screen recording of a radiologist's interpretation process is easy and simple. The teaching video clips reveal a radiologist's interpretation process or the explanation of teaching cases with his/her own voice narration, and it is an effective self-learning tool for medical students and residents.
Body Regions
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Education
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Humans
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Learning
;
Narration
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Students, Medical*
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Tomography, X-Ray Computed
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Voice
3.Views on Authorship: Survey Among Academic Staffs of the Korean Radiologists.
Journal of the Korean Radiological Society 2004;50(4):289-294
PURPOSE: The purpose of my survey is to assess the knowledge and views of the academic staff on authorship criteria. MATERIALS AND METHODS: 363 academic staff were invited to fill out the survey via e-mail and the responses were collected for two weeks. A one-page questionnaire was prepared and it included 19 questions with three major groups. The first group of questions was demographic information including the responder's age, sex and academic position. The second group of questions was focused on the individual perception and personal experience for authorship on their publications. The last group of questions included awareness and views of authorship criteria established by International Committee of Medical Journal Editors (ICMJE). The responders were grouped according to age, sex and grade. To examine the difference of responses among each group, a Chi square test for categorical variables was performed. RESULTS: The overall response rate to the survey was 39.2% (113/288) and 20.7% (75/363) of e-mail address were undeliverable. The grade of respondents is relatively evenly distributed from fellowship (20%) to professor (22%). Most of the respondents (90.6%) had experienced difficulties with authorship. Although 72.2% of respondents had no awareness of ICMJE's criteria, they agreed with criteria fully (56.1%) and partially (42.4%). 42% of respondents expected that more than 50% of the authors per paper didn't fulfill the authorship criteria. Less than 5 authors per paper were adequate (96%). Most of respondents thought that the introduction of a contribution listing to the Journal of the Korean radiological society is necessary (93.5%) but it is not urgently needed (59.0%). CONCLUSION: I can see that there are authorship problems among the academic members of Korean radiological society. It is necessary to educate the members and to have them justify the validity of their authorship claims.
Authorship*
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Surveys and Questionnaires
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Electronic Mail
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Fellowships and Scholarships
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Humans
4.Inhibition of L-type calcium currents by magnesium sulfate on the rat basilar artery smooth muscle cells
Naveen Sharma ; Janardhan Prasad Bhattarai ; Pyoung Han Hwang ; Seong Kyu Han ; Yun Su Yang
Neurology Asia 2014;19(3):301-307
Objective: Vasospasm remains the leading cause of cerebral damage after aneurysmal subarachnoid
hemorrhage. Although magnesium regulates the calcium influx in vascular smooth muscle and
endothelial cells, it has not been reported whether L-type calcium channels are involved in magnesiuminduced
vascular relaxation in rat basilar artery. So, the effect of magnesium sulfate on L-type calcium
currents in freshly isolated smooth muscle cells from rat basilar artery was investigated. Methods:
The smooth muscle cells were isolated from rabbit basilar artery by enzyme treatment. L-type Ca2+
currents were identified using cesium chloride, a potassium channel blocker and Bay K8644, an
activator of L-type Ca2+ channel. Currents were recorded under step pulse whole cell patch clamp
technique. Results: In the presence of cesium chloride (in pipette solution), inward currents were
observed by depolarizing step pulses. The inward currents were significantly reduced by nimodipine
(n=4, p<0.05), an L-type Ca2+ channel blocker and increased by Bay K8644 (n=5, p<0.05), an L-type
Ca2+ channel activator. The L-type calcium currents (156±17.0 pA, n=12) were significantly reduced
by the application of 5 mM magnesium sulfate (53.8±7.0 pA, n=12, p<0.01).
Conclusion: These results suggest that magnesium may relax cerebral vessel of rat basilar artery
through decreasing intracellular Ca2+ ion by inhibition of L-type Ca2+ channels.
5.Citation Trend and Suggestions for Improvement of Impact Factor of Journal of Korean Therapeutic Radiology and Oncology.
Seong Hwan KIM ; Seong Su HWANG ; Myeong Im AHN ; Sona JEONG
The Journal of the Korean Society for Therapeutic Radiology and Oncology 2006;24(4):309-316
PURPOSE: To analyze the recent citation trend and to find a way to improve impact factor (IF) of the Journal of Korean Therapeutic Radiology and Oncology (JKSTRO) by analysis of Korean Medical Citation Index (KoMCI) citation data of JKSTRO and comparison with that of mean citation data of all journals enlisted on KoMCI (KoMCI journals) during 2000-2005. MATERIALS AND METHODS: All citation data of entire journals enlisted on KoMCI and JKSTRO from 2000 to 2005 were obtained from KoMCI. The trend of total and annual number of published articles and reference citations, total citations and self-citations per paper, IF and impact factor excluding self-citations (ZIF) were described and compared on both KoMCI journals and JKSTRO. RESULTS: Annual number of published articles was decreased for 6 years on both KoMCI journals and JKSTRO (32% and 38% reduction rate). The number of Korean journal references per article is 1.6 papers on JKSTRO comparing to 2.0 papers on KoMCI journals. The percentage of Korean references/total references increased from 5.0% in 2000 to 7.7% in 2005 on JKSTRO and from 8.5% in 2000 to 10.1% on KoMCI journals. The number of total citations received/paper on JKSTRO (average 1.333) is smaller than that of KoMCI journals (average 1.694), there was an increased rate of 67% in 2005 comparing to 2000. The percentage of self-citations/total citations (average 72%) on JKSTRO is slightly higher than that of KoMCI journals (average 61%). IF of JKSTRO was gradually improved and 0.144, 0.125, 0.088, 0.107, 0.187, and 0.203 in 2000-2005 respectively. However, ZIF of JKSTRO is steadily decreased from 0.038 in 2000 to 0.013 in 2005 except 0.044 in 2004. CONCLUSION: IF of JKSTRO was slightly improved but had some innate problem of smaller number of citations received. To make JKSTRO as a highly cited journal, the awareness of academic status of JKSTRO and active participation of every member of JKSTRO including encouraging self-citations of papers published recent 2 years and submission of English written papers, and active academic cooperation with related academic societies.
Radiation Oncology*
6.Cheiro-oral Syndrome: A Clinicoradiological Review of 10 Patients.
Su Hyun CHO ; Seon Chool HWANG ; Young Jung KANG ; Seong Hwan KIM ; Mun Seong CHOI ; Deok Hong MOON ; Seong Uk HONG
Journal of the Korean Neurological Association 1997;15(4):816-824
BACKGROUND AND OBJECT: Cheiro-oral syndrome (COS) is characterized by a sensory disturbance in the unilateral hand and ipsilateral mouth corner. It is usually due to a lesion in the parietal cortex, thatamocortical projections, thalamus, or rarely brain stem. However, the syndrome is relatively unknown and rarely mentioned in most neurological textbooks. We presented ten cases of COS with a review of the clinical symptoms and signs and the neuroradiological methods used to demonstrate the responsible site. METHODS AND RESULTS: We studied 10 patients with stroke who showed restricted sensory disturbance on the one hand and ispilateral mouth. The study forms consisted of clinical manifestaion, neurological examination, electrophysiological, and neuroradiologic studies. Computed tomography and/or magnetic resonance imaging identified lesion in the thalamus in 5, brain stem in 3, and corona radiata in 1 patient. But, the anatomical responsible site for one case was not founded. Infarction had occurred in nine cases and hemorrhage in one. Seven of the 10 patients showed sensory disturbances restricted to the perioral area, hands, fingers when they were first examined; the remaining patients complained more diffuse sensory disturbances at first, but it had become restricted to perioral and fingers, usually within 2-3 weeks. The durations of symptom varied from 5 days to more than 15 months and these symptoms were improved within 2-3 weeks to 4 months in treated patients. CONCLUSION: When the symptoms and signs of the COS were presented, especially if a history of migraine is lacking, neuroradiological methods such as CT or MRI should be undertaken to localize and diffentiate the nature of lesion.
Brain Stem
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Fingers
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Hand
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Hemorrhage
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Humans
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Infarction
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Magnetic Resonance Imaging
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Migraine Disorders
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Mouth
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Neurologic Examination
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Rabeprazole
;
Stroke
;
Thalamus
7.The Prognostic Factors of Pneumonia with Septic Shock in Patients Presenting to the Emergency Department.
Jong Won KIM ; Jin Joo KIM ; Hyuk Jun YANG ; Yong Su LIM ; Jin Seong CHO ; In Cheol HWANG ; Sang Hyun HAN
Korean Journal of Critical Care Medicine 2015;30(4):258-264
BACKGROUND: Pneumonia is the most common cause of death among patients with infectious disease in Korea. However, studies of pneumonia with septic shock in patients presenting to the emergency department are limited. The aim of this study was to investigate the prognostic factors associated with pneumonia with septic shock in patients presenting to the emergency department. METHODS: From January 2008 to September 2014, patients with pneumonia with septic shock admitted through the emergency department were retrospectively examined. RESULTS: Of the 561,845 patients who visited the emergency department, 398 were admitted for pneumonia with septic shock. The 28-day mortality rate in these patients was 36.4%. The independent prognostic factors were old age (>70 yrs) (odds ratio [OR], 2.42; 95%, confidence interval [CI], 1.35-4.32), Acute Physiology and Chronic Health Evaluation (APACHE) II score (OR, 1.04; 95% CI, 1.01-1.08), leukopenia (OR, 3.63; 95% CI, 1.48-8.94), prolonged PT-INR (OR, 2.53; 95% CI, 1.41-4.54), and hypoxemia (OR, 2.88; 95% CI, 1.30-6.38). CONCLUSIONS: A poor prognosis of patients with pneumonia is associated with old age (>70 yrs), increased APACHE II score, leukopenia, prolonged PT-INR, and hypoxemia.
Anoxia
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APACHE
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Cause of Death
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Communicable Diseases
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Emergencies*
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Emergency Service, Hospital*
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Humans
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Korea
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Leukopenia
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Mortality
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Pneumonia*
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Prognosis
;
Retrospective Studies
;
Shock, Septic*
8.Intussusception in an Adult due to Inverted Meckel's Diverticulum with Ectopic Pancreatic Tissue.
Ye Won JUN ; Bong Hyun KYE ; Hyung Jin KIM ; Hyeon Min CHO ; Changyoung YOO ; Seong Su HWANG
Journal of the Korean Surgical Society 2010;79(Suppl 1):S41-S44
Adult intussusception is rare involving of only 1% of the causes of bowel obstruction. We report a case of a 39-year-old female with intussusceptions due to inverted Meckel's diverticulum. She visited our hospital for diffuse abdominal pain during 1 week and aggravated abdominal pain for 2 days. Vital signs were stable, and there was periumbilical tenderness. She had no history of abdominal operation. CT scan showed a 3.7x2.1 cm of fatty mass with focal intussusception in the distal ileum. When the emergency operation was performed, the patient was found to be suffering from ileocolic intussusception. A manual reduction of intussusception showed inverted Meckel's deverticulum at 65 cm proximal to the ileocecal valve, and the segmental resection of small bowel including a Meckel's diverticulum was performed. Pathologic examination revealed a Meckel's diverticulum containing a 0.6x0.6 cm sized aberrant pancreas.
Abdominal Pain
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Adult
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Emergencies
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Female
;
Humans
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Ileocecal Valve
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Ileum
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Intussusception
;
Meckel Diverticulum
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Pancreas
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Stress, Psychological
;
Vital Signs
9.A Giant Gartner Duct Cyst Originating from the Uterine Cervix and Adjacent Myometrium: A Case Report.
Eun Hui KIM ; Seong Su HWANG ; Soo Youn PARK
Journal of the Korean Radiological Society 2008;59(5):325-327
Gartner duct cysts are relatively common congenital cysts in the anterolateral wall of the vagina. Most are small (less than 2 cm) and asymptomatic, but larger cysts may cause problems. We report a rare case of a giant Gartner duct cyst (7 cm) originating from the right lateral portion of the uterine cervix and adjacent myometrium. It appeared as an exophytic multiseptated cystic mass containing different density fluids on CT.
Animals
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Cervix Uteri
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Female
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Mice
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Myometrium
;
Vagina
10.The Significance of Diffusion Weighted Imaging for the Diagnosis of Pyogenic Ventriculitis.
Yon Kwon IHN ; Seong Su HWANG ; Tae You KIM
Journal of the Korean Radiological Society 2007;57(2):129-135
PURPOSE: To evaluate the significance of diffusion weighted imaging (DWI) for the diagnosis of pyogenic ventriculitis. MATERIALS AND METHODS: In this retrospective study, 9 patients with pyogenic ventricultis underwent a set of imaging sequences that included DWI, T1-and T2-weighted imaging, FLAIR and enhanced T1 weighted imaging. DWI consisted of an axial single shot spin echo EPI pulse sequence with b values of 0 and 1000 sec/mm2. We evaluated the presence and signal intensity of ventricular debris, hydrocephalus, periventricular signal abnormality, and ependymal enhancement. The apparent diffusion coffiecient values of ventricular debris and cortical gray matter were calculated from the ADC map. RESULTS: In all patients, ventricular debris was hyperintense on the DWIs. A periventricular hyperintense signal was present in all cases on FLAIR and T2WI. Ependymal enhancement was detected in eight (89%) of 9 cases. A hydrocephalus was observed in 6 (67%) of 9 cases. The mean ADC value of ventricular debris was 0.735 +/- 0.117 (10(-3) mm2/sec). These ADC values were significantly lower than those for cortical gray matter (1.052 +/- 0.149 (10(-3) mm2/sec)). CONCLUSION: Ventricular debris was most conspicuous finding of ventriculitis on DWI. Areas of intraventricular hyperintensity on DWI corresponded to the decreased ADC values.
Cerebral Ventricles
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Diagnosis*
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Diffusion Magnetic Resonance Imaging
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Diffusion*
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Encephalitis
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Humans
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Hydrocephalus
;
Retrospective Studies