1.Functional MRI of The Supplementary Motor Area in Hand Motor Task: Comparison Study with The Primary Motor Area.
Ho Kyu LEE ; Jin Suh KIM ; Choong Gon CHOI ; Dae Chul SUH ; Tae Hwan LIM
Journal of the Korean Society of Magnetic Resonance in Medicine 1997;1(1):103-108
PURPOSE: To investigate the localization and functional lateralization of the supplementary motor area (SMA) in motor activation tests in comparison to that of the primary motor area. MATERIALS AND METHODS: Seven healthy volunteers obtained echoplanar imaging blood oxygen level dependent technique. This study was carried on 1.5T Siemens Magneton Vision system with the standard head coil. Parameters of EPI were followed as ; TR/TE; 1.0/66.0 msec. flip angle : 90degree, field of view : 22cmx22cm, matrix : 128x128, slice number/slice thickness/gap : 10/4mm/0.8mm with fat suppression technique. Motor task as finger opposition in each hand consisted of 3 sets of alternative rest and activation periods. Postprocessing were done on Stimulate 5.0 by using cross-correlation statistics. To compare the functional lateralization of the SMA in the right and left hand tests, each examination was evaluation for the percent change of signal intensity and the number of activated voxels both in the SMA and in the primary motor area. Hemispheric asymmetry was defined as difference of summation of the activated yokels between each hemisphere. RESULTS: Percent change of signal intensity in the SMA (2.49-3.06%) is lower than that of primary motor area(4.4-7.23%). Percent change of signal intensity including activated voxels were observed almost equally in the right and left SMA. As for summation of activated voxels primary motor area had significant difference between each hemisphere but not did the SMA. CONCLUSION: Preferred contralateral dominant hemisphere and hemispheric asymmetry were detected in the primary motor area but not in the SMA.
Echo-Planar Imaging
;
Fingers
;
Hand*
;
Head
;
Healthy Volunteers
;
Magnetic Resonance Imaging*
;
Oxygen
2.The clinical observations in childhood asthma.
Kih Yeon SONG ; Yong Hyoun PARK ; Jin Gon JUN ; Young Hwan LEE ; Chun Dong KIM
Yeungnam University Journal of Medicine 1992;9(2):239-247
A clinical analysis was done on 134 cases with bronchial asthma who were admitted to the Department of Pediatrics Yeungnam University from May 1987 to October 1991. The results were as follows: 1) The peak age of bronchial asthma was under 2 years. The sex ratio of male to female was 2.9:1. 2) The outbreak of bronchial asthma was most common in fall, especially in September. 3) The past history of other allergic diseases were present in 22.4% of patients (30/134 cases), and the previous bronchiolitis in infancy were experienced in 12.7% of patients (17/134 cases). 4) According to the skin test for allergens done by RAST, the most common allergens were Mites and House dust. 5) Eosinophilia (T.E.C>250/min) was found in 29.1%t of patients, and elevated lgE level (>200 IU/ml) was found in 63.2% of patients. 6) No significant differences in the serum lgE level were found between male and female patients. No significant differences in the serum lgE level were found between asthma patients with and without other allergic diseases. 7) The serum lgE level of school aged patients was significant higher than that of preschool aged (p<0.01).
Allergens
;
Asthma*
;
Bronchiolitis
;
Dust
;
Eosinophilia
;
Female
;
Humans
;
Male
;
Mites
;
Pediatrics
;
Sex Ratio
;
Skin Tests
3.A case of immature teratoma of uterus.
Tae Hwan YOO ; Yoon LEE ; Jeong Gon PARK ; Yong Bong KIM ; Eung Soo LEE ; Sung Kwan PARK
Korean Journal of Obstetrics and Gynecology 1993;36(7):3132-3135
4.Effect of Body Mass Index on the Result of the Tension-free Vaginal Tape Procedure in Patients with Stress Urinary Incontinence.
Su Hwan PARK ; Kyung Seop LEE ; Dae Gon KIM
Korean Journal of Urology 2004;45(4):337-340
PURPOSE: The aim of the study was to evaluate the clinical outcome, according to the body mass index (BMI), of tension-free vaginal tape (TVT) for the surgical treatment of stress urinary incontinence. MATERIALS AND METHODS: Women were classified as being of normal weight (BMI 20-25), overweight (BMI 26-30) or obese (BMI>30). The patients characteristics and clinical outcomes of the operation were analyzed according to the BMI. RESULTS: There were no significant differences in the patients characteristics, with the exception of the pre-operative posterior urethrovesical angle (PUVA). The subjective cure rate, satisfaction rate and complications of the normal BMI patients did not significantly differ from the women with the high BMI. CONCLUSIONS: The TVT procedure in stress urinary incontinence patient's results in similar subjective cure rates, satisfaction rates and post-operative complications, irrespective of the BMI, which makes it safe for overweight and obese women, and would appear to be an adequate treatment for future use.
Body Mass Index*
;
Female
;
Humans
;
Overweight
;
Suburethral Slings*
;
Urinary Incontinence*
;
Urinary Incontinence, Stress
5.A Case of Non-Q Myocardial Infaction in a Patient with Myocardial Bridging.
Kee Beum LEE ; Dae Sik KANG ; Jeung Tae KIM ; Soo Dong SEUNG ; Hwan Gon KIM ; Hoo Keun PARK
Korean Circulation Journal 1994;24(6):910-915
Myocardial bridging is defined as segmental engulfment of a major epicardial coronary artery by myocardial fibers, causing a systolic narrowing or milking effect of the coronary arterial segment. During systole, the intramuscular part of coronary artery is compressed by contraction of overbridging ventricular muscle, therefore blood flow distal to the lesion is impaired and angina pectoris or acute myocardial infarction may occur. We experienced a case of Non-Q myocardial infarction in a 42 years-old female patient with myocardial bridge at the proximal and middle part of left anterior descending coronary artery.
Adult
;
Angina Pectoris
;
Coronary Vessels
;
Female
;
Humans
;
Milk
;
Myocardial Bridging*
;
Myocardial Infarction
;
Systole
6.Clinical Study of Old-aged Patients in Traffic Accidents and Admitted For Emergency Treatment.
Young Hwan LEE ; Hyoung Gon SONG
Journal of the Korean Society of Traumatology 2006;19(1):74-80
PURPOSE: For prevention and suitable administration, the effect of age on the severity of injuries in traffic accidents should be considered when evaluating a patient, but there have not been enough epidemiological studies that evaluate the age factor in traffic accidents. For that reason, we investigated old-aged patients who were involved in traffic accidents (65 years old or more) and who were admitted to the emergency department of a college hospital in an urban city of Korea. METHODS: We collected data from traffic-accident patients who came to the emergency room of a university hospital in Seoul from Jan.1, 2004 to Dec.31, 2005. We compared their abilities to ambulate and the RTSs (Revised trauma scores) by using a LSD (least significant difference), linear regression. RESULTS: A total of 1460 patients were included. The mean RTS of all traffic-accident patients was 7.77+/-0.280. The scores for drivers and passengers, motor-cycle drivers and passengers, bicycle drivers and passengers, and pedestrians were 7.79+/-0.21, 7.78+/-0.22, 7.54+/-0.25, 7.77+/-0.20, and 7.80+/-0.21 respectively (p=0.000). There was no statistically significant difference between the RTS of patients over 65 years and that of other patients. In a regression analysis, the number of patients over 45 ages who were able to ambulate was lower than that of younger people, independently of other influencing factors (B=-0.330, R-square = 0.243, p=0.000). CONCLUSION: We expected that RTS of old age group more than 65 years old will significantly lower than that of others, but there was no statistically significant difference.
Accidents, Traffic*
;
Age Factors
;
Aged
;
Emergencies*
;
Emergency Service, Hospital
;
Emergency Treatment*
;
Epidemiologic Studies
;
Humans
;
Korea
;
Linear Models
;
Lysergic Acid Diethylamide
;
Motor Vehicles
;
Seoul
7.Microleakage of 2-step adhesive systems in diamond-prepared cavity.
Myung Goo LEE ; Kwon Hwan CHO ; Young Gon CHO
Journal of Korean Academy of Conservative Dentistry 2007;32(5):437-444
The purpose of this study was to compare the marginal microleakage of different 2-step adhesive systems in Class V cavities prepared with different diamond points. Forty Class V cavities were prepared with two different (coarse or fine) diamond points on cervical third of extracted molars. The occlusal and gingival margin of cavities was located in enamel and dentin, respectively. They were divided into one of four equal groups (n = 10) and ; Group 1-prepared with coarse diamond point (EX-41), restored with Single Bond and Z 250, Group 2-prepared with fine diamond piont (TF-21F), restored with Single Bond and Z 250, Group 3-prepared with coarse diamond point (EX-41), restored with Clearfil SE Bond and Clearfil AP-X, Group 4-prepared with fine diamond point (TF-21F), restored with Clearfil SE Bond and Clearfil AP-X. Specimens were thermocycled, immersed in a 2% methylene blue solution for 24 hours, and bisected longitudinally. They were observed leakages at enamel and dentinal margins. Data were analyzed using Mann-Whitney and Wilcoxon signed ranked test. In this study, marginal microleakage of Single Bond was not affected by type of diamond points. But Clearfil SE Bond showed higher marginal microleakage at both enamel and dentinal margin when Class V cavity was prepared with coarse diamond point.
Adhesives*
;
Dental Enamel
;
Dentin
;
Diamond
;
Methylene Blue
;
Molar
8.Two-Year Follow-Up Results after Tendon Graft and Corrective Osteotomy for the Delayed Rupture of the 2nd-5th Flexor Tendons due to a Malunion of a Distal Radius Fracture - A Case Report -
Jeung-Hwan SEO ; Hyun-Gon GWAK ; Jae Hoon LEE
Journal of the Korean Fracture Society 2022;35(2):63-67
The delayed rupture of the flexor tendons is a rare complication of malunited distal radius fractures after nonoperative management. The known cause of a flexor tendon rupture is attrition between the palmarly displaced ulnar head and the involved tendons. Sharp bony spurs on the volar side of the malunited distal radius can also cause flexor tendon rupture. About 30 cases have been reported in literature. There were only four case reports about the delayed rupture of the 2nd, 3rd, 4th, and 5th flexor tendons. In this case, we experienced flexor digitorum superficialis and flexor digitorum profundus tendon ruptures of the index, middle, ring, and little fingers, after 8 months following the malunion of a distal radius fracture. At two years follow-up after tendon graft and corrective osteotomy, the range of motion and motor weakness of the 2nd, 3rd, 4th, and 5th fingers improved.
9.Role of Prostate-Specific Antigen Change Ratio at Initial Biopsy as a Novel Decision-Making Marker for Repeat Prostate Biopsy.
Jung Gon LEE ; Seong Ho BAE ; Seock Hwan CHOI ; Tae Gyun KWON ; Tae Hwan KIM
Korean Journal of Urology 2012;53(7):467-471
PURPOSE: Prostate biopsy is used to confirm the prostate cancer. Although first biopsy result was benign, repeat biopsy is recommended for the patient who has higher risk of prostate cancer. In this study, we investigated the PSA change ratio (post-biopsy PSA to baseline PSA) whether it could be predictive factor of prostate cancer and helpful when decided to perform repeat biopsy. MATERIALS AND METHODS: 151 patients, first diagnosed as benign, but underwent repeat biopsy due to clinical suspicion of prostate cancer were included. Post-biopsy PSA was checked 60 minutes later after biopsy. PSA change ratio was defined as post-biopsy PSA to baseline PSA. According to results of repeat biopsy, patients were divided into benign group (group A) and cancer groups (group B). Between two group baseline PSA, PSA density, post-biopsy PSA and PSA change ratio were compared, and most effective cut-off value was analyzed using receiver operating characteristic (ROC). RESULTS: 129 men were benign, 22 men were prostate cancer according to results of repeat biopsy. Between two groups, post-biopsy PSA and PSA change ratio were statically significant differences. (p<0.001, <0.001) The effective cut-off value was 3.0, 3.5 and 4.0 according to ROC. At ROC curve, PSA change ratio was statistically significant for diagnosis of prostate cancer. (AUC 0.800, p<0.001). CONCLUSIONS: PSA change ratio is thought be a predictive factor for prostate cancer. If the PSA change ratio was less than 3.0-4.0, repeat biopsy should be considered to confirm the diagnosis.
Biopsy
;
Humans
;
Male
;
Prostate
;
Prostate-Specific Antigen
;
Prostatic Hyperplasia
;
Prostatic Neoplasms
;
ROC Curve
10.Prenatal ultrasonic detection of endocardial cushion defect in 1 case.
Jeong Gon PARK ; Tae Hwan YOO ; Yoon LEE ; Myung Kwon JEON ; Hong Kyun LEE ; Hong Dong KIM ; Hye Je CHO ; Shin Young LEE
Korean Journal of Obstetrics and Gynecology 1993;36(7):3126-3131
No abstract available.
Endocardial Cushion Defects*
;
Endocardial Cushions*
;
Ultrasonics*