1.A study of artifacts in MR imaging induced by metalic aneurysm clips.
Joo Hyuk LEE ; Kee Hyun CHANG ; Jae Hyung PARK
Journal of the Korean Radiological Society 1992;28(2):307-313
To investigate MR artifacts induced by metallic implants, scans were obtained using both the ferromagnetic Drake lip and the non ferromagnetic Yasargil clip. Scan were taken through the area of clips using geometrical phantom. The MRI was performed by spin echo technique and gradient echo technique on both 2.0T and 0.5T MR unit. The luthors evaluated the nature and differences of artifacts in each sequence and parameter. Artifacts induced by both lips were noted in the direction of frequency encoding gradient, and consisted of region of signal loss abutted in one side by survilinear region of bright signal. Geometric distortion of image was marked in the Drake clip, out was minimal in the Yasargil clip under both 2.0T and 0.5T. Artifacts were more pronounced in the gradient echo technique than those of the spin echo technique on both 2.0T and 0.5T. Although there were no differences n the nature of artifacts induced by the Drake clip among each parameter in the spin echo technique under 2.0T, artifacts were slightly more pronounced on T2 weighted image under the 0.5T field, but no differences were found in the nature of artifacts induced by the Yasargil clip in the spin echo technique under, both the 2.0T and 0.5T fields. Marked artifacts were induced through the small area of the Drake clip which were included in the scan plane, but induced artifacts were small when a small area of the Yasargil clip was included in the scan plane. It seemed likely hat artifacts were slightly more pronounced in the 2.0T than the 0.5T field in both clips, but objective evaluation of the difference was difficult, In conclusion, these results can be an essential basis for the interpretation of MR images or patents with metallic inplants.
Aneurysm*
;
Artifacts*
;
Lip
;
Magnetic Resonance Imaging*
;
Magnets
2.Immunohistochemical studies on the rate of positive reaction of estrogen receptors and progesterone receptors in the breast diseases.
Suk Yong SUNG ; Hyun Muck LIM ; Jae Hyung YOO
Journal of the Korean Surgical Society 1991;41(1):29-36
No abstract available.
Breast Diseases*
;
Breast*
;
Estrogens*
;
Progesterone*
;
Receptors, Estrogen*
;
Receptors, Progesterone*
3.Clinical application of absolute ethanol as an embolizing material
Jae Hyung PARK ; Kee Hyun CHANG ; Man Chung HAN
Journal of the Korean Radiological Society 1982;18(3):416-420
Transcatheter infusion of absolute ethanol was applied clinically in 3 cases of artificial embolization; 25yrsold female with bilateral renal angiomyolipoma, 19yrs old female with right paralumbar liposarcoma and 25 yrs oldmale with hypernephroma of right kidney. Selective or subselective manual infusion was made and 9 to 22cc of pureethanol was delivered in a speed of 1 to 2cc per second. The sclerosing effect of absolute ethanol was potent.However, all 3 cases revealed mild post-emboliaztion syndrome.
Angiomyolipoma
;
Carcinoma, Renal Cell
;
Ethanol
;
Female
;
Humans
;
Kidney
;
Liposarcoma
5.Psychiatric Diagnosis and Hypersexual Behavior Inventory, Sexual Addiction Screening Test, and Beck Depression Inventory/Beck Anxiety Inventory of the Sexual Offenders.
Jun Hyung LEE ; Hyun Sic KIM ; Jae Woo LEE ; Woo Sung PARK ; Myung Ho LIM
Korean Journal of Legal Medicine 2013;37(1):27-33
The current study evaluated DSM-IV psychiatric diagnoses and investigated the psychological characteristics of sexual offenders by using the Hypersexual Behavior Inventory(HBI), Sexual Addiction Screening Test (SAST), Beck Depression Inventory (BDI), and Beck Anxiety Inventory (BAI). Fifty male sexual offenders and 36 male healthy controls completed the psychiatric diagnosis and 30 of the 50 male sexual offenders completed the psychological tests listed above. Thirty-two of the 50 sexual offenders were patients with paraphilias, these sexual offenders had been admitted by the Ministry of Justice to the Institute for Forensic Psychiatry in Gongjui-si due to sexual violence. Participants displayed high lifetime rates of psychiatric disorders: 32 (64%) had paraphilias, 16 (32%) had depressive disorders, 10 (20%) had anxiety disorders, 9 (18%) had impulse control disorders, 6 (12%) had schizophrenia, 2 (4%) had bipolar disorders, and 16 (32%) had personality disorders or some other Axis II disorder. Scores for the sexual offenders were significantly higher both on the HBI and the SAST than the comparison group. Scores for the sexual offenders were also higher for the BDI and the BAI as compared to the control group, but this difference was not statistically significant. Results indicate that sexual offenders may have sexual addictions and be hypersexual. In addition to depressive and anxious psychopathologies, they also seem to have sexual psychopathologies. These results suggested that the psychopathology of sexual offenders may be different than that of a control group.
Anxiety
;
Anxiety Disorders
;
Axis, Cervical Vertebra
;
Bipolar Disorder
;
Criminals
;
Depression
;
Depressive Disorder
;
Diagnostic and Statistical Manual of Mental Disorders
;
Forensic Psychiatry
;
Humans
;
Disruptive, Impulse Control, and Conduct Disorders
;
Male
;
Mass Screening
;
Mental Disorders
;
Paraphilic Disorders
;
Personality Disorders
;
Psychological Tests
;
Psychopathology
;
Schizophrenia
;
Sex Offenses
;
Social Justice
6.CHONDROBLSTOMA ON TEMPOROMANDIBULAR JOINT, A CASE REPORT.
Hyun Ho CHANG ; Seung Yun HAN ; Hyung Mo AHN ; Won Jong CHOI ; Jae Seung KIM
Journal of the Korean Association of Oral and Maxillofacial Surgeons 1997;23(4):756-762
Chondroblastoma is a rare primary bone tumor which originates from cartilage, and represents approximate 1% af all bone tumor. The chondroblastoma arises most frequently from the epiphysis of the long bones with the humerus being the commonest site. It afflicts usually the young under 25 years with greater incidence in male. As there is no cartilage cell on craniofacial bone which is mainly fromed by intramembranous ossification, the chondroblastoma on the craniofacial bone is extremely rare. But the chondroblastoma recurred frequently in craniofacial bone when the mass is excised incompletely or curretted and, as the tumor has the outstanding ability of local invasiveness, it destructs the adjacent bone. In addition, it is difficult to diagnose differentially from sarcoma or giant cell tumor histopathologically. Due to the entities described above, it is necessary to remove the entire tumor mass as complete as possible, to treat with radiation pre or postoperatively for preventing from recurrence, and to observe for a long time. The chondroblastoma on temporal bone is rare and is difficult to diagnose and treat successfully. So we'd like to present a case of chondroblastoma which was originated from temporal side of TMJ with literatural review.
Cartilage
;
Chondroblastoma
;
Epiphyses
;
Giant Cell Tumors
;
Humans
;
Humerus
;
Incidence
;
Male
;
Recurrence
;
Sarcoma
;
Temporal Bone
;
Temporomandibular Joint*
7.Is a Suction Drain Necessary in Arthroscopic Rotator Cuff Repair?.
Jin Young PARK ; Ju Hyun SIM ; Jae Hyung LEE ; Kyung Soo OH ; Seok Won CHUNG
Clinics in Shoulder and Elbow 2016;19(3):137-142
BACKGROUND: The purpose of this study was to evaluate the efficacy of suction drain use following arthroscopic rotator cuff repair by comparing early pain score and range of motion (ROM) between groups with and without suction drains. METHODS: The study included 153 patients with rotator cuff tears who underwent arthroscopic repairs at our clinic from April 2014 to March 2015. Following surgery, a suction drain was used in 85 patients (group D) and not used in 68 patients (group ND). There was no statistical difference between the groups in terms of age, gender, or total operation time. The clinical outcome with regard to pain (assessed by pain scores and analgesic requests) and passive ROM was assessed preoperatively and postoperatively. RESULTS: Immediate postoperative analgesic requirement was significantly higher in group D (p=0.001), although there was no difference in pain outcomes between the groups during the 3-month follow-up period. A statistically significant difference in passive ROM was observed at the postoperative 2- and 6-week follow-ups (p=0.036, 0.035, and 0.034 in forward elevation (FE), external rotation at the side (ER) and 90 ER at weeks 2, respectively; 0.045 and 0.009 in FE and ER at weeks 6, respectively); however no significant difference was observed at the end of 3 months. During the study period, no complication was reported in either group. CONCLUSIONS: Use of suction drains after arthroscopic rotator cuff repair provided little benefit in terms of ROM or pain in the early postoperative period (up to 3 months).
Arthroscopy
;
Follow-Up Studies
;
Humans
;
Postoperative Period
;
Range of Motion, Articular
;
Rotator Cuff*
;
Shoulder
;
Suction*
;
Tears
8.The Effect of Daunorubicin on Experimental Proliferative Vitreoretinopathy.
Jae Hyun LEE ; Hyung Woo KWAK ; Woo Jeong CHOI
Journal of the Korean Ophthalmological Society 1996;37(10):1656-1662
Proliferative vitreoretinopathy (PVR) is a main cause of failure in retinal reattachment surgery. There have been many studies about the inhibition of proliferative vitreoretinophthy with several drugs. Authors investigated the inhibitory effect of proliferative vitreoretinopathy and retinal toxicity with various concentration of daunorubicin after intravitreal injection into the eyes of the pigmented rabbit. 7 pigment rabbit (11eyes) were used as subjects. After lensectomy and vitrectomy, control group was injected dermal fibroblast and F-BSS, and treatment group was injected dermal fibroblast and 5, 10, 15, 30 nmol Daunorubicin. At two weeks after intravitreal injection, both group were enucleated and examined with gross finding, light--microscopy, and electronmicroscopy. In all control group, proliferative vitreoretinopathy was found, but only preretinal membrane formation was found in 5, 10 nmol Daunorubicin injected group. In 15 nmol Daunorubicin injected group, the retina structure was preserved normally. In 30 nmol Daunorubicin injected group, the retinal outer segment was degenerated in microscopic finding. These results show that Daunorubicin has a potent effect on proliferative vitreoretinopathy, especially in 15 nmol, but retinal toxicity is suspected in marethan 30 nmol.
Daunorubicin*
;
Fibroblasts
;
Intravitreal Injections
;
Membranes
;
Retina
;
Retinal Photoreceptor Cell Outer Segment
;
Retinaldehyde
;
Vitrectomy
;
Vitreoretinopathy, Proliferative*
9.Acute Appendicitis Diagnosed by Colonoscopy.
Jae Myung YU ; Tae Hun AHN ; Hyung Ho LEE ; Ho Sang RYU ; Jin Hai HYUN
Korean Journal of Gastrointestinal Endoscopy 1986;6(1):55-58
Acute appendicitis is the most common operative disease in general surgery, but it is not also rate disease to see in other clinical department such as Internal Medicine and Obstetric and Gynecology, because it reqnires to differenciate from many other diseases which have similar symptoms. Expecially, because the clipical aymptoms of acute appendicitis are not typieal in children, elderly, and women, it is hard to be diagnosed as acute appendicitis and it is often misdiagnosed as other disease. We performed colonoscopy due to be interpretated aa one of the colon diseases rather than acute appendicitis. But in colonoscopic findings, there were hyperemie and edematous change on the appendiceal orifice of cecum(cherry or acorn shape). So we report 5 cases of acute appendicitis diagnosed br colonoscopy.
Aged
;
Appendicitis*
;
Child
;
Colon
;
Colonoscopy*
;
Female
;
Gynecology
;
Humans
;
Internal Medicine
10.Ultrastructural and immunohistochemical studies of ameloblastoma.
Sung Duk CHO ; Choong Hyun CHANG ; Doo Hyung LEE ; Jae Hoon PARK ; Moon Ho YANG
Journal of the Korean Society of Plastic and Reconstructive Surgeons 1993;20(3):477-491
No abstract available.
Ameloblastoma*