No abstract available.
Korea*

No abstract available.
Diaphragm* ; Ultrasonography*

BACKGROUND AND OBJECTIVES: When a disability is superimposed on a previous disability, the concept of aggravation of disability should be applied. In rating the disability for hearing loss, we focused on the aggravation of disability and the methods of assessment. SUBJECTS AND METHOD: For the past 12 years, we have provided legal advisory for 111 cases of hearing injury, for which disability had to be rated. In 11 of those 111 cases, disability was assessed in consideration of aggravation of disability. We assessed disability using three rating methods: they were based on 1) a change of hearing level from assumed normal, 2) apportionment of new hearing injury in final hearing, and 3) a change in disability rating. We evaluated for significant differences and correlations between the values obtained by each method. RESULTS: There was a significant difference between the results by the methods 1 and 2. The disability rating by the method 2 showed good correlations with those assessed by the methods 1 and 3. CONCLUSION: When considering aggravation of disability in hearing, the method 2 could be a good alternative when the standard method 3 is inappropriate.
Disability Evaluation ; Hearing ; Hearing Loss

No abstract available.
Uterine Cervical Neoplasms*

BACKGROUND AND OBJECTIVES: According to the correlation between hearing injury and McBride disability rating presented by previous studies, there are over/underestimated cases particularly in the 40 dB hearing range compared to other ranges. In this study, we reviewed the overestimated and underestimated data and propose a complementation scheme for a disability rating system by using the linear regression analysis. SUBJECTS AND METHOD: For the past 14 years, we have provided legal advisory for 121 cases of hearing injury, for which disability had to be rated. We reviewed all but excluded 11 cases for the aggravation of disability. A regression equation was produced from a linear regression analysis that used the percent of hearing handicap (AAO-HNS/AMA-1979 formula) as an independent variable (x) and McBride disability rating (%) as a dependent variable (y), following the Pearson correlation test. Iterative calculation was performed for overestimated (18) and underestimated (8) cases. RESULTS: Appropriate disability ratings were 14% for the cases overestimated to 20% and 11% for those underestimated to 5%. Appropriate disability ratings for the 20% of overestimated cases were changed to 14%, and for the 5% of the underestimated cases, the disability ratinb 11%. Iterative calculation showed that the Pearson correlation index was improved from 0.8866 to 0.9065 and the determination coefficient of regression analysis (adjusted R-square) was improved from 0.784 to 0.8202. CONCLUSION: The common range of hearing injury, which falls between 30-40 dB corresponds to the percentage of hearing handicap of 7.5-22.5%. A fairer assessment of ability rating would be possible by complementing some parts of this hearing range.
Complement System Proteins* ; Disability Evaluation ; Hearing Loss ; Hearing* ; Jurisprudence ; Linear Models* ; Regression Analysis*

Objective: We aimed to compare cerebral beta-amyloid protein (Aβ) positivity rate and amyloid accumulation pattern on amyloid positron emission tomography (PET) between mild cognitive impairment (MCI) subtypes, i.e. amnestic mild cognitive impairment (aMCI) and non-amnestic mild cognitive impairment (naMCI). Methods: The study participants were 34 naMCI patients and age-, sex- and education-matched 68 aMCI patients (1:2 ratio) who visited the Dementia and Age-Associated Cognitive Decline Clinic of the Seoul National University Hospital. All participants received comprehensive clinical and neuropsychological assessments and [18F] florbetaben PET. Results: Aβ positivity rate of naMCI group (26.5%) was significantly lower than that of aMCI group (64.7%). Among Aβ positive individuals, there was no difference in Aβ accumulation pattern between naMCI and aMCI. Conclusion The findings suggest that MCI subtypes based on impaired cognitive domains have a differential association with brain Aβ deposition, a core pathology of AD. Amnestic subtype of MCI are more closely associated with cerebral Aβ deposition compared to nonamnestic subtype. In contrast, the pattern of amyloid deposition does not appear to have any difference between the subtypes.

BACKGROUND AND OBJECTIVES: In disability rating of hearing injury, there are some medicolegal considerations, such as discrepancy in estimating values between McBride system and the American Medical Association system, and difficulties in judging the hearing level in boundary cases. We have therefore felt the need of complementary hearing disability evaluation methods that reflect reality. As a first step, we have pointed out current situation and problems in legal advisory cases of hearing injury. SUBJECTS AND METHOD: For the past 14 years, we have provided legal advisory on hearing injury for 121 cases for courts (group A) or insurance companies (group B). Eleven cases of 'aggravation of disability' were excluded. Data were summarized and tested statistically. We have used unpaired t-test for continuous variables such as age, hearing, hearing disability, disability rating, Fisher's exact test for dichotomous variable such as gender, group (A/B), and Pearson's correlation test for correlation coefficients between continuous variables. RESULTS: Subjects were more frequently males (3:1) and in the fifth decade of life. The averages of audiometry were around 40 dB. There were significant differences in hearing and disability rating between younger and older group. Group B is significantly older than group A. The type of disability or accident did not influence hearing and disability rating. CONCLUSION: This paper could help figure out the current situation with respect to medicolegal considerations of hearing injury discrepancies in disability rating and could also serve well to recognize the necessity for a complementary hearing disability evaluation method, especially for borderline hearing level.
American Medical Association ; Audiometry ; Disability Evaluation ; Hearing Loss ; Hearing* ; Humans ; Insurance ; Jurisprudence ; Male

PURPOSE: There are marked differences in facial skeletal characteristics between Asian and Caucasian. However, ethnic differences in age-related facial skeletal changes have not yet been fully established. The aims of this study were to evaluate age-related changes in Asian midfacial skeletons and to explore ethnic differences in facial skeletal structures with aging between Caucasian and Asian. MATERIALS AND METHODS: The study included 108 men (aged 20-79 years) and 115 women (aged 20-81 years). Axial CT images with a gantry tilt angle of 0 were analyzed. We measured three-dimensional (3D) coordinates at each point with a pixel lens cursor in a picture archiving and communication system (PACS), and angles and widths between the points were calculated using 3D vector mathematics. We analyzed angular changes in 4 bony regions, including the glabellar, orbital, maxillary, and pyriform aperture regions, and changes in the orbital aperture width (distance from the posterior lacrimal crest to the frontozygomatic suture) and the pyriform width (between both upper margins of the pyriform aperture). RESULTS: All 4 midfacial angles in females and glabellar and maxillary angles in males showed statistically significant decreases with aging. On the other hand, the orbital and pyriform widths did not show statistically significant changes with aging. CONCLUSION: The results of this study suggest that Asian midfacial skeletons may change continuously throughout life, and that there may be significant differences in the midfacial skeleton between both sexes and between ethnic groups.
Adult ; Aged ; Aging/ethnology/*physiology ; Asian Continental Ancestry Group ; Facial Bones/*anatomy & histology/*radiography ; Female ; Humans ; Image Processing, Computer-Assisted ; Male ; Mathematics ; Maxilla/anatomy & histology/radiography ; Middle Aged ; Orbit/anatomy & histology/radiography ; Radiology Information Systems ; Republic of Korea ; Tomography, X-Ray Computed/*methods ; Young Adult ; Zygoma/anatomy & histology/radiography

Traumatic carotid-cavernous fistula frequently results in proptosis on the side of the fistula by retrograde drainage from the cavernous sinus to the superior ophthalmic vein. The involvement of the opposite orbit is due to the presence of connections between the cavernous sinuses on both sides, but exclusive contralateral orbit involvement is rare. We report a case in which the CCF with a contralateral proptosis developed in a 63 year-old man after a motor vehicle accident. MR angiography depicted the markedly dilated left cavernous sinus and left superior ophthalmic vein, sparing the right side. However, angiography showed a direct fistula between the right internal carotid artery and cavernous sinus with exclusive contralateral venous drainage via the intercavernous sinus. A detachable balloon was used to occlude the fistula, and the contralateral orbital symptom regressed.
Angiography ; Carotid Artery, Internal ; Cavernous Sinus ; Drainage ; Exophthalmos* ; Fistula* ; Humans ; Middle Aged ; Motor Vehicles ; Orbit ; Veins

We report a patient who developed subarachnoid hemorrhage (SAH) just after coronary angiography (CAG) with non-ionic contrast media (CM) and minimal dose of heparin. The 55-year-old man had a history of acute ST elevation myocardial infarction that had been treated with primary percutaneous coronary intervention and was admitted for a follow-up CAG. The CAG was performed by the transradial approach, using 1000 U of unfractionated heparin for the luminal coating and 70 mL of iodixanol. At the end of CAG, he complained of nausea and rapidly became stuporous. Brain CT showed a diffusely increased Hounsfield unit (HU) in the cisternal space, similar to leakage of CM. The maximal HU was 65 in the cisternal space. No vascular malformations were detected on cerebral angiography. The patient partially recovered his mental status and motor weakness after 2 days. Two weeks later, subacute SAH was evident on magnetic resonance imaging. The patient was discharged after 28 days.
Brain ; Cerebral Angiography ; Contrast Media ; Coronary Angiography ; Follow-Up Studies ; Heparin ; Humans ; Magnetic Resonance Imaging ; Middle Aged ; Myocardial Infarction ; Nausea ; Percutaneous Coronary Intervention ; Phenobarbital ; Stupor ; Subarachnoid Hemorrhage ; Triiodobenzoic Acids ; Vascular Malformations