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박진석,임승평,김관태,Park, Jin-Seok,Im, Seung-Pyeong,Kim, Gwan-Tae 대한흉부심장혈관외과학회 1994 Journal of Chest Surgery (J Chest Surg) Vol.27 No.6
Neurogenic tumors of the mediastinum may have an intraspinal component connected by a narrowed segment of tumor in the intervertebral foramen,hence the descriptive term dumbbell.Recently we had an occasion to remove a dumbbell neurilemmoma in a 62 years old woman using an approach designed to allow wide posterolateral thoracotomy and concomitant laminectomy for a single stage removal of the entire tumor. The mass in the posterior mediastinum was discovered on routine chest roentgenography. CT scan demonstrated a dumbbell shaped soft tissue mass density compressing spinal canal but preserving spinal cord. There were no neurologic signs. A standard posterolateral thoracotomy incision was made to remove tumor mass and then T5 unilateral laminectomy has done by Neurosurgeon. 7 x 7 cm sized extrapleural neurilemmoma was round, cystic, soft mass which covered parietal pleural with invaded regional vertebrae. There was no postoperative neurological complication.
박진석(Jin-Seok Park),정영만(Young-Man Jeong),김학선(Hak-Sun Kim),김용석(Yong-Seok Kim),양순용(Soon-Yong Yang) 한국생산제조학회 2009 한국공작기계학회 추계학술대회논문집 Vol.2009 No.-
The machine vision system is widely applied at automatic inspection field of the industries. Especially, the machine vision system showed good performance at difficult inspection field by contact method. In this paper, the automatic system to inspect screw/bolt shape using machine vision is developed. The inspection system uses pattern matching method that search similar degree of the lucidity, the average lucidity, length and angle of inspection set up area using a circular scan and a line scan method. This inspection system is composed of feeding device, transfer device, vision system, lighting device and computer; and the separation discharge system of the inferior product is according to inspection result. The performance experiment of this system measured the feeding speed, the shape correct degree and the separation discharge speed according to the type of screw/bolt. The performance test showed a satisfied result in whole inspection items. Presently, this inspection system is being used in the manufacturing process of screw/bolt usefully.