1.MR Imaging of the Trachea:In Vivo and In Vitro Study.
Hyeon Joo JEONG ; Jin Suck SUH ; Myung Joon KIM
Journal of the Korean Radiological Society 1994;30(6):1051-1056
PURPOSE: To establish signal intensity characteristics of the trachea according to the histologic layers, we performed in vivo and in vitro MR studies. MATERIALS AND METHODS: We performed MR imaging of the trachea at 1.5T unit in 11 patients mediastinal masses, vascular anomalies, tracheal stenosis or iatrogenic tracheoesophageal fistula, aryepiglottic fold thickening or mass, tracheal carcinoid, one healthy volunteer and one cadaveric trachea. By using anterior, volume neck or 3 inch dual coil with various pulse sequences, axial and coronal images of the trachea were obtained. The tracheal layers with different signal intensity on MR images were correlated with the histology. RESULTS: In vivo and in vitro MR studies revealed two layers of the trachea ;the inner layer had intermediate to high signal and the outer had low signal. The tracheal cartilage showed low signal intensity in all pulse sequences. The submucosa appeared as intermediate signal intensity on T1 weighted images but high signal intersity on other images due to its abundant mucous and mucoserous glands. However, the mucosa and perichondrium could not be defined on MR images. CONCLUSION: Characterization of the signal intensity according to the histologic layers of the trachea might be helpful for the evaluation of intrinsic lesions of the irachea or the possibility of tracheal invasion from the adjacent tumors.
Cadaver
;
Carcinoid Tumor
;
Cartilage
;
Healthy Volunteers
;
Humans
;
Magnetic Resonance Imaging*
;
Mucous Membrane
;
Neck
;
Trachea
;
Tracheal Stenosis
;
Tracheoesophageal Fistula
2.Comparison of Case Management between Tele Care Regions and General Care Regions in Korean Medicaid.
Hyun Joo LEE ; Jin Joo OH ; Jeong Myung CHOI
Journal of Korean Academy of Nursing Administration 2010;16(4):381-388
PURPOSE: The purpose of the study was to compare recipients' health behavior, attitude to using medicaid, medication compliance, and the changes in hospital cost and visit-day of in-patient and out-patient care between tele-care regions (TCR) and general care regions (GCR) in Korean medicaid. METHOD: The design of the study was ex-post facto comparing recipients in TCR and GCR. The sample included 625 persons in TCR and 410 persons in GCR. To collect materials, the case manager interviewed recipients of medicaid and filled out questionnaires which were analyzed through SAS/PC 9.1. RESULTS: In studying health behavior and medication, compliance was not significant. However, the attitude to using medicaid was significantly more positive in TCR than in GCR. In out-patients, the change of hospital visit-day was not significant between TCR and GCR, but TCR showed a reduction in hospital cost compared to GCR. For in-patient recipients, GCR showed a greater reduction in changes in hospital cost and visit-day compared to TCR. CONCLUSIONS: The results of the study show that attitudes to using medicaid via telephone are positive and results are more effective than hospital visit consultation, and the cost of out-patient care could be reduced.
Case Management
;
Compliance
;
Delivery of Health Care
;
Health Behavior
;
Hospital Costs
;
Humans
;
Medicaid
;
Medication Adherence
;
Outpatients
;
Surveys and Questionnaires
;
Telephone
3.The Effect of Copayment on Medical Aid Beneficiaries in Korea.
Jin Joo OH ; Jeong Myung CHOI ; Hyun Joo LEE
Journal of Korean Academy of Community Health Nursing 2015;26(1):11-17
PURPOSE: This study was to ascertain whether there are differences in health care utilization and expenditure for Type I Medical Aid Beneficiaries before and after applying Copayment. METHODS: This study was one-group pretest posttest design study using secondary data analysis. Data for pretest group were collected from claims data of the Korea National Health Insurance Corporation and data for posttest group were collected through door to-door interviews using a structured questionnaire. A total of 1,364 subjects were sampled systematically from medical aid beneficiaries who had applied for copayment during the period from December 12, 2007 to September 25, 2008. RESULTS: There was no negative effect of copayment on accessibility to medical services, medication adherence (p=.94), and quality of life (p=.25). Some of the subjects' health behaviors even increased preferably after applying for copayment including flu prevention (p<.001), health care examination (p=.035), and cancer screening (p=.002). However, significant suppressive effects of copayment were found on outpatient hospital visiting days (p<.001) and outpatient medical expenditure (p<.001). CONCLUSION: Copayment does not seem to be a great influencing factor on beneficiaries'accessibility to medical services and their health behavior even though it has suppressive effects on outpatients' use of health care.
Cost Sharing
;
Delivery of Health Care
;
Early Detection of Cancer
;
Health Behavior
;
Health Care Costs
;
Health Expenditures
;
Humans
;
Korea
;
Medicaid
;
Medication Adherence
;
National Health Programs
;
Outpatients
;
Quality of Life
;
Statistics as Topic
;
Surveys and Questionnaires
4.Imaging Findings of Cerebellopontine Angle Cistern Melanocytoma: A Case Report.
Sung Mi KIM ; Jin Ok CHOI ; Myung Jin JOO
Journal of the Korean Radiological Society 2000;42(3):439-442
Because melanocytes are found throughout the leptomeninges, primary melanotic pigmented tumors such as pigmented meningioma, malignant melanoma, melanoblastosis, and melanocytoma can arise from this region. Melanocytomas have been described in the literature as isodense or hyperdense compared with brain parenchyme, as seen on noncontrast-enhanced CT, and as showing relatively homogeneous enhancement. MR imaging demonstrates a high signal on T1-weighted images, and an iso to hypointense signal on T2- weighted images. We report the imaging findings of a melanocytoma that showed hyperdense attenuation on precontrast CT with homogeneous enhancement and hyperintense signal intensity on T1-weighted images and dark signal intensity enhancement on T2-weighted images, and also review the literature.
Brain
;
Cerebellopontine Angle*
;
Magnetic Resonance Imaging
;
Melanocytes
;
Melanoma
;
Meninges
;
Meningioma
5.A Case of Liquefied Posterior Capsular Opacification.
Joo Hwa LEE ; Chul Ho GO ; Myung Jin JOO
Journal of the Korean Ophthalmological Society 1999;40(9):2632-2635
Among the complications of cataract surgery, the reported frequency of posterior capsular opacification was 20~50 percent. We experienced a case of new type of posterior capsular opacification in the seventy-one year old woman patient, who undertook the cataract operation with phacoemulsification six years ago and visited our hospital with the decreased vision. With biomicroscopic examination, posterior capsular opacification, creating a closed chamber between the lens and the posterior capsule in which a liquefied, milky white substance accumulates was detected. The patient was treated with Nd: YAG laser capsulotomy. To our knowledge, there has been no reported case of liquefied posterior capsular opacification in Korea. Therefore we report this case with literature review.
Cataract
;
Female
;
Humans
;
Korea
;
Lasers, Solid-State
;
Phacoemulsification
6.Retinal and Choroidal Vaseular Occlusion Following Autologous Fat Injection into the Temple Area.
Myung Jin JOO ; Jheong Whan KIM ; Jung Eon YANG ; Joo Hwa LEE
Journal of the Korean Ophthalmological Society 1992;33(4):422-525
We recently obsesved an unusual case of visual loss after the facial injection of autologous fat. A 42-year-old woman underwent autologous fat injection into the temple area to reduce facial wrinkles. The procedure was performed by a surgeon at local clinic. The patient immediately complained of severe right hemicranial pain and lid swelling. She vistied to the ophthalmic department of our hospital 1 week later because of total loss of vision on the right eye. We believe that the cause of blindness was multiple microembolization in the central retinal artery and posterior ciliary branches of the ophthalmic artery via lateral palpebral artery.
Adult
;
Arteries
;
Blindness
;
Choroid*
;
Female
;
Humans
;
Ophthalmic Artery
;
Retinal Artery
;
Retinaldehyde*
7.Benign Epithelial Changes of Endometrium: Based on 450 hysterectomy specimens obtained from Jan. 1994 to Dec. 1994.
Hye Kyung LEE ; Myung Jin JOO ; Kwang Min LEE ; Dong Kyu CHUNG
Korean Journal of Pathology 1996;30(11):966-971
To evaluate the incidence and clinico-pathologic correlation of benign epithelial changes of endometrium, we tried to classify the changes into squamous cell change, ciliary change, eosinophilic cell change, papillary surface epithelial change, and mucinous cell change by the criteria of Hendrickson. Based on the 450 hysterectomy specimens obtained from Jan. 1994 to Dec. 1994 in PMC, the incidence of the cell changes was as follows: squamous cell change: 1.1%, eosinophilic cell change: 6.8%, mucinous cell change: 6.6%, ciliary change: 10.4%, papillary surface epithelial change: 16.4%. Squamous cell change was noted in severe endometritis or endometrial hyperplasia and papillary surface epithelial proliferation was mainly associated with plasma cell infiltration in adenomyosis or leiomyoma. Eosinophilic change and ciliary change were sometimes concomitantly found in dilated glands of the basal layer or in the invaded glands of adenomyosis. The results of this study suggested a correlation of benign epithelial changes with endometritis, adenomyosis, leiomyoma and dysfunctional uterine bleeding.
Incidence
8.Diversity of Humoral Immune Responses to Recombinant Proteins of Brucella abortus Among Residents in Cheju Province.
Hyung Jin EUH ; Jun Seop YEOM ; Jun Myung KIM ; Joo Deuk KIM ; Sang Nae CHO
Journal of the Korean Society for Microbiology 2000;35(5):377-377
No Abstract Available.
Brucella abortus*
;
Brucella*
;
Immunity, Humoral*
;
Jeju-do*
;
Recombinant Proteins*
9.Anticardiolipin antibody and pregnancy outcomes.
Ki Jung HAN ; Kwan Young JOO ; Duck Ho BAE ; Myung A LEE ; Sung Jin CHO ; In Suh PARK
Korean Journal of Obstetrics and Gynecology 1993;36(6):755-763
No abstract available.
Antibodies, Anticardiolipin*
;
Female
;
Pregnancy
;
Pregnancy Outcome*
;
Pregnancy*
10.Determination of Bilirubin Concentration in the Jaundiced Korean Newborn Infants with Transcutaneous Bilirubinometer.
Man Jin CHUNG ; Young Joo SUH ; Jong Doo KIM ; Myung Hi SHIN ; Ji Sub OH
Journal of the Korean Pediatric Society 1983;26(12):1179-1187
No abstract available.
Bilirubin*
;
Humans
;
Infant, Newborn*