The purpose of this study was to perform the radiographic measurements and temporomandibular joint evaluation in mandibular asymmetry. For this study, thirty-two patients who have mandibular asymmetry were selected and submentovertex, panoramic and lateral corrected tomographic radiagraphs were taken. Horizontal and vertical analysis using various landmarks on these radiographs were performed. Also radiographic and clinical evaluation of temporomandibular joint were obtained. Ther results were as follows ; 1. On the submentovertex radiograph, the mean distance of Pogonion to midline was 5.0(+/-)3.8mm. 2. The mean distance of Pogonion to Gonion between the deviated and the contra-lateral side(P<0.001). 3. The distance difference of Pogonion to Gonion between the deviated and the contra-lateral side was significantly realated to the degree of asymmetry(P<0.001). 4. On panoramic radiagraph,the condylar height of the contral-lateral side was significantly longer than the one of the deviated side(P<0.001). 5. On lateral corrected tomogram, bony of temporomandibular joint was observed in 11 condyles of the deviated side and 9 condyles of the contra-lateral side. Erosion and ostephyte were the most common changes in both the deviated and the contra-lateral sides.
Humans ; Temporomandibular Joint

No abstract available.
Thanatophoric Dysplasia*

PURPOSE: To analyze the possible association between magnetic resonance imaging signal intensity of temporo-mandibular joint disk and posterior attachment, and the type and extent of disk displacement, disk configuration, effusion and clinical signs in patients with internal derangement. MATERIALS AND METHODS: Magnetic resonance images of the 132 temporomandibular joints of 66 patients with temporomandibular joint displacement were analyzed. The clinical findings were obtained by retrospective review of the patients' records. The type and extent of disk displacement, disk configuration and effusion were evaluated on the proton density MR images. The signal intensity from the anterior band, posterior band and posterior attachment were measured on MR images. The associations between the type and extent of disk displacement, disk configuration, effusion and clinical signs and the MR signal intensity of disk and posterior attachment were statistically analyzed by student's t-test. RESULTS: Of 132 joints, 87 (65.9%) showed anterior disk displacement with reduction (ADR) and 45 (34.1%) showed anterior disk displacement without reduction (ADnR). The signals from posterior attachments were lower in joints with ADnR than those of ADR (p<0.05). The results showed statistically significant (p<0.05) association between the type and extent of disk displacement and disk configuration, and decreased signal intensity of posterior attachment. There were no statistical associations between pain, noise and limited mouth opening, and signal intensity of disk and posterior attachment. Conclusions : The average signal from posterior attachment was lower in joints with ADnR than that of ADR. The type and extent of disk displacement and disk configuration appeared to be correlated with the signal intensity from posterior attachment.
Humans ; Joints ; Magnetic Resonance Imaging* ; Mouth ; Noise ; Protons ; Retrospective Studies ; Temporomandibular Joint Disc* ; Temporomandibular Joint*

PURPOSE: To analyze the possible association between magnetic resonance imaging signal intensity of temporo-mandibular joint disk and posterior attachment, and the type and extent of disk displacement, disk configuration, effusion and clinical signs in patients with internal derangement. MATERIALS AND METHODS: Magnetic resonance images of the 132 temporomandibular joints of 66 patients with temporomandibular joint displacement were analyzed. The clinical findings were obtained by retrospective review of the patients' records. The type and extent of disk displacement, disk configuration and effusion were evaluated on the proton density MR images. The signal intensity from the anterior band, posterior band and posterior attachment were measured on MR images. The associations between the type and extent of disk displacement, disk configuration, effusion and clinical signs and the MR signal intensity of disk and posterior attachment were statistically analyzed by student's t-test. RESULTS: Of 132 joints, 87 (65.9%) showed anterior disk displacement with reduction (ADR) and 45 (34.1%) showed anterior disk displacement without reduction (ADnR). The signals from posterior attachments were lower in joints with ADnR than those of ADR (p<0.05). The results showed statistically significant (p<0.05) association between the type and extent of disk displacement and disk configuration, and decreased signal intensity of posterior attachment. There were no statistical associations between pain, noise and limited mouth opening, and signal intensity of disk and posterior attachment. Conclusions : The average signal from posterior attachment was lower in joints with ADnR than that of ADR. The type and extent of disk displacement and disk configuration appeared to be correlated with the signal intensity from posterior attachment.
Humans ; Joints ; Magnetic Resonance Imaging* ; Mouth ; Noise ; Protons ; Retrospective Studies ; Temporomandibular Joint Disc* ; Temporomandibular Joint*

OBJECTIVE: Self-expanding stents are increasingly used for the treatment of complex intracranial aneurysms. The purpose of this study was to evaluate the usefulness and safety of a self-expanding nitinol stent (Enterprise) in the treatment of wide-necked intracranial aneurysms. METHODS: This was a retrospective study of 39 patients with 40 wide-necked intracranial aneurysms who were enrolled in a single-center registry of patients treated with the Enterprise between June 2009 and December 2011. Thirty patients were asymptomatic, four had cerebrovascular accident sequelae, and five had suffered subarachnoid hemorrhage. One aneurysm had reopened after prior coil embolization, while 39 had not been treated. Clinical charts, procedural data, and angiographic results, including both immediate post-procedural angiograms and follow-up imaging, were reviewed. RESULTS: The mean neck size of the aneurysms was 5.58 mm (range 3-15.1 mm). Embolization was successful in all patients. There were five procedure-related events. There were no fatalities, but one procedure-related morbidity was noted. The immediate angiographic results included eight complete occlusions (20%), six remnant necks (15%), and 26 remnant sacs (65%). At angiographic follow-up (mean: 11.3 months), out of 18 of the aneurysms treated with stent-assisted coiling, there were 13 (72.2%) complete occlusions, four (22.2%) remnant necks, and one recanalization (5.6%). CONCLUSION: Stent-assisted coiling using the Enterprise is effective for the treatment of wide-necked intracranial aneurysms. Further angiographic and clinical follow-up investigation will be needed for evaluation of the long-term outcomes.
Aneurysm* ; Embolization, Therapeutic ; Follow-Up Studies ; Humans ; Intracranial Aneurysm* ; Neck ; Retrospective Studies ; Stents* ; Stroke ; Subarachnoid Hemorrhage

The purpose of this study was to evaluate the detectability of various radiographic techniques for mandibular condylar lesions. Erosive lesion, osteophyte and flattening were formed on the artificial mandibular condyle, and panoramic, transcranial, transorbital radiography, lateral and frontal tomography were taken. The results were as follows; 1. The detectability for erosive lesions was superior in the order of frontal tomography(96%), lateral tomo graphy(78%), transorbital(59%), transcranial(56%) and panoramic(48%) radiography. 2. The location of erosive lesion that showed the highest detectability was the medial third in panoramic, the lateral third in transcranial, the central portion of anteroposterior direction in transorbital, the central portion of mediolateral direction and the posterior third in lateral tomography. Frontal tomography disclosed all erosive lesions except one anterolateral lesion. 3. The detectability of osteophyte was 100% in lateral tomography, 78% in transcranial and 56% in panoramic radiography. 4. For flattening, lateral tomography showed the flattened condyle, but both panoramic and transcranial views showed only decreased bone density without the change of condylar shape.
Bone Density ; Mandibular Condyle ; Osteophyte ; Radiography ; Radiography, Panoramic ; Temporomandibular Joint*

OBJECTIVES: The purpose of this study was to suggest a proper method for the detection of heaptitis B surface antibody(anti-HBs) in a screening program for hepatitis B vaccination. METHODS: Sensivitity, specificity and predictive values were compared between Immunochromatographic assay (ICA) and passive hemagglutination(PHA) in 978 subjects(565 males, 413 females, 19-78 years ranging in age, mean 46.5 years old). EIA was used as a standard method for the detection of HBsAb. RESULTS: Sensitivity in the detection of anti-HBs of PHA and ICA was 88.7% and 94.9%, specificity was 94.3% and 96.6%, negative predictive value was 96.5% and 98.0%, and positive predictive value was 82.3% and 91.3%, respectively. False negative rate(11.3%) of PHA was higher than that(5.1%) of ICA. The higher the titer of anti-HBs in EIA was, the lower the false negative rate was. There was no false negative result in the cases with 101mIU/ml or more in EIA. CONCLUSION: We suggest that ICA should be the choice of screening method in the detection of anti-HBs in Hepatitis B vaccination program.
Female ; Hepatitis B* ; Hepatitis* ; Humans ; Immunochromatography ; Korea* ; Male ; Mass Screening ; Sensitivity and Specificity ; Vaccination*

Lymphangiomas are uncommon benign congenital tumors. Most occur in the head and neck and most lesions present by the age of 2 years. We present our experience with four patients who have lymphangiomas of the head and neck with tongue involvement. First case is a 7-year-old male who has the cystic lymphangioma of left submandibular area. Second a 22-year-old female has a lesion involving the border of right tongue. Third case is the lymphangioma which occur in the right upper lip of a 6-year old male. The last patient is a 28-year old male who fell down and whose right face was swollen up. He had undergone an operation and treated with steroid before. The characteristic appearances of imaging methods were described and all lesions best depicted on T2-weighted images. Our experience indicates that MRI is useful in the diagnosis and treatment planning of lymphangioma.
Adult ; Child ; Diagnosis ; Female ; Head* ; Humans ; Lip ; Lymphangioma* ; Lymphangioma, Cystic ; Magnetic Resonance Imaging ; Male ; Neck* ; Tongue ; Young Adult

The purpose of this study was to identify important items from the medical records to be used in the standardized discharge abstract. Common items were identified by analyzing medical records from the 11 largest hospitals in Seoul. Non-common items were identified by a questionnaire survey from the directors of medical record departments of 152 teaching hospitals. The results of research was follows; 1. Thirty eight common items were included in the analyzed sheet of 11 hospitals. 2. Eighty two non-common items were identified from the analyzed. Of these,10 items were found to be important items for the discharge abstract. 3. Another 26(half) or 18(first quarter) important non-common items were identified from the survey. 4. It was notified in the non-common standardized items group that the importance of some items like the patient's occupation, underlying cause of death, nosocomial infection, complications, house staff code in charge of completing records, and items concerning quality improvement showed difference by the number of beds. The importance of house staff code who is responsible for completion of the record also showed statistically significant difference by the number of beds per medical record professional and by regions. The item of the types of nosocomial infection also showed statistically significant difference between the regions. Most hospitals obtain a lot of medical information from the computerized discharge abstract. One of the results of the study showed that the concerned sheet can housed as both the data for the medical insurance claims and the basic data for medical quality improvement. Therefore, the discharge abstract should be regarded as the most necessary sheet to be standardized. It was found that 92.8% of the directors of medical record departments of nationwide teaching hospitals acknowledged the necessity of standardization of medical record data set.
Cause of Death ; Cross Infection ; Dataset ; Hospitals, Teaching ; Insurance ; Internship and Residency ; Medical Records ; Occupations ; Quality Improvement ; Surveys and Questionnaires ; Seoul

The purpose of this study was to identify important items from the medical records to be used in the standardized discharge abstract. Common items were identified by analyzing medical records from the 11 largest hospitals in Seoul. Non-common items were identified by a questionnaire survey from the directors of medical record departments of 152 teaching hospitals. The results of research was follows; 1. Thirty eight common items were included in the analyzed sheet of 11 hospitals. 2. Eighty two non-common items were identified from the analyzed. Of these,10 items were found to be important items for the discharge abstract. 3. Another 26(half) or 18(first quarter) important non-common items were identified from the survey. 4. It was notified in the non-common standardized items group that the importance of some items like the patient's occupation, underlying cause of death, nosocomial infection, complications, house staff code in charge of completing records, and items concerning quality improvement showed difference by the number of beds. The importance of house staff code who is responsible for completion of the record also showed statistically significant difference by the number of beds per medical record professional and by regions. The item of the types of nosocomial infection also showed statistically significant difference between the regions. Most hospitals obtain a lot of medical information from the computerized discharge abstract. One of the results of the study showed that the concerned sheet can housed as both the data for the medical insurance claims and the basic data for medical quality improvement. Therefore, the discharge abstract should be regarded as the most necessary sheet to be standardized. It was found that 92.8% of the directors of medical record departments of nationwide teaching hospitals acknowledged the necessity of standardization of medical record data set.
Cause of Death ; Cross Infection ; Dataset ; Hospitals, Teaching ; Insurance ; Internship and Residency ; Medical Records ; Occupations ; Quality Improvement ; Surveys and Questionnaires ; Seoul