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Mehmet Sabri Gürbüz,Mehmet Zafer Berkman,Emre Ünal,Elif Akpınar,Şevki Gök,Metin Orakdöğen,Salih Aydın 대한척추외과학회 2015 Asian Spine Journal Vol.9 No.5
Study Design: Retrospective cohort study. Purpose: To compare surgical results of foramen magnum decompression with and without duraplasty in Chiari malformation type 1 (CM-1) associated syringomyelia (SM). Overview of Literature: The optimal surgical treatment of CM-1 associated with SM is unclear. Methods: Twenty-five cases of CM-1 with SM were included. There were 12 patients (48%) in the non-duraplasty group and 13 patients (52%) in the duraplasty group. The rate of improvement, state of postoperative SM size, amount of tonsillar herniation, preoperative symptom duration, complications and reoperation rates were analysed. Results: The rate of clinical improvement was significantly higher with duraplasty (84.6%) than without (33.3%, p <0.05). The rate of postoperative syrinx regression was significantly higher in the duraplasty group (84.6%) than in the non-duraplasty group (33.3%, p <0.05). One case in the duraplasty group needed a reoperation compared with five cases in the non-duraplasty group (p =0.059). Conclusions: Duraplasty is superior to non-duraplasty in CM-1 associated with SM despite a slightly higher complication rate.
CHO, Hyun-chong,HADJIISKI, Lubomir,SAHINER, Berkman,CHAN, Heang-Ping,PARAMAGUL, Chintana,HELVIE, Mark,V. NEES, Alexis,CHO, Hyun Chin INSTITUTE OF ELECTRONICS, INFORMATION & 2016 IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS E SE Vol.99e.d No.6
<P>To study the similarity between queries and retrieved masses, we design an interactive CBIR ( Content-based Image Retrieval) CADx ( Computer-aided Diagnosis) system using relevance feedback for the characterization of breast masses in ultrasound ( US) images based on radiologists' visual similarity assessment. The CADx system retrieves masses that are similar to query masses from a reference library based on six computer-extracted features that describe the texture, width-to-height, and posterior shadowing of the mass. The k-NN retrieval with Euclidean distance similarity measure and the Rocchio relevance feedback algorithm ( RRF) are used. To train the RRF parameters, the similarities of 1891 image pairs from 62 ( 31 malignant and 31 benign) masses are rated by 3 MQSA ( Mammography Quality Standards Act) radiologists using a 9-point scale ( 9= most similar). The best RRF parameters are chosen based on 3 observer experiments. For testing, 100 independent query masses ( 49 malignant and 51 benign) and 121 reference masses on 230 ( 79 malignant and 151 benign) images were collected. Three radiologists rated the similarity between the query masses and the computer-retrieved masses. Average similarity ratings without and with RRF were 5.39 and 5.64 for the training set and 5.78 and 6.02 for the test set, respectively. Average AUC values without and with RRF were, respectively, 0.86+/- 0.03 and 0.87+/- 0.03 for the training set and 0.91+/- 0.03 and 0.90+/- 0.03 for the test set. On average, masses retrieved using the CBIR system were moderately similar to the query masses based on radiologists' similarity assessments. RRF improved the similarity of the retrieved masses.</P>
Infection of Cranioplasty Seen Twenty Years Later
Gurbuz, Mehmet Sabri,Celik, Ozgur,Berkman, Mehmet Zafer The Korean Neurosurgical Society 2012 Journal of Korean neurosurgical society Vol.52 No.5
Cranioplasty is performed using autograft and allograft materials on patients to whom craniectomy was applied previously due to the facts that, this region is open to trauma and the scalp makes irritation and pressure onto the brain paranchyma causing brain atrophy and convulsions. Dramatical improvement of neurological deficits, control of convulsions and partial prevention of cerebral atrophy are achieved after these operations. One of the most important complications of cranioplasty is late infection. Here, we report a 43-year-old male patient admitted with the history of purulant discharge from the right temporal incission site for one year to whom cranioplasty had been performed with allograft material 20 days after craniectomy which had been performed in 1989. Allograft cranioplasty material was removed and cranioplasty was performed using new allograft material with the diagnosis of late cranioplasty infection.
Jang, S.-N.,Cho, S.-I.,Chang, J.,Boo, K.,Shin, H.-G.,Lee, H.,Berkman, L. F. Oxford University Press 2009 JOURNALS OF GERONTOLOGY SERIES B-PSYCHOLOGICAL SCI Vol.64 No.5
<P>OBJECTIVES: We investigated the association between employment status and depressive symptoms among Korean individuals according to age and gender. METHODS: Data were obtained from a subsample of 3,907 men and 4,914 women aged 45 years and older without any severe disabilities who participated in the 2006 cross-sectional baseline survey of the Korean Longitudinal Study of Aging (KLoSA). We compared depressive symptoms as determined by the Center for Epidemiological Studies-Depression 10-item scale, adjusting for socioeconomic status, physical and cognitive function, and chronic disease. Using multiple regression analysis, we determined both age- and gender-specific differences associated with depressive symptoms and employment status. RESULTS: Employment was associated with fewer depressive symptoms among middle-aged men but not among older men. Unemployment was associated with more depressive symptoms among middle-aged women but not among older women. CONCLUSION: Work role did not provide any benefit for depressive symptoms among older men and women. We discuss the increased depressive symptoms among older employed men and the differential association of employment status with age and gender in the context of Korean social structure.</P>