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박중호,김정우,최재혁,박선우,김성환 서울시립대학교 산업기술연구소 1999 산업기술연구소논문집 Vol.7 No.-
In this paper, the SEM (scanning electron microscope) image processing system using PC (personal computer) is designed, so it is low cost and easy to use. We designed the deflection signal generator, the image grabber board and the interface board. The implemented SEM image processing system has ten zoom levels from 200 times to 200,000 times and three scanning speeds (1/30 sec, 1 sec, 6 sec). And a new algorithm for the SEM image interpolation is proposed. By using wavelet transform to find the edge regions and using the adaptive interpolation algorithm, high quality edge preserving image interpolation is achieved. The enlarged images, which are produced from this method, are shown to be aesthetically superior to images enlarged by the standard methods of linear and cubic B-spline interpolation.
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박중호,이치우,신영민,안지현,반종석,이지향 대한마취통증의학회 2015 Korean Journal of Anesthesiology Vol.68 No.2
Background: Opioids are widely used in boluses and patient-controlled analgesia (PCA) for postoperative pain control. In this study, we compared the effects of oxycodone and fentanyl on postoperative pain in patients with intravenouspatient-controlled analgesia (IV-PCA) after laparoscopic gynecological surgery. Methods: Seventy-four patients undergoing elective total laparoscopic hysterectomy or laparoscopic myomectomy wererandomly assigned to the administration of either fentanyl or oxycodone using IV-PCA (potency ratio 1 : 60). The cumulativedose administered in the patient-controlled mode during the initial 48 hours after the operation was measured. Patients were also assessed for postoperative pain severity, adverse effects, and patient satisfaction. Results: No significant differences were observed in patient satisfaction with the analgesia during the postoperative period. Patients in the oxycodone group experienced significantly more dizziness compared to the fentanyl group. Patientsin the oxycodone group showed significantly lower consumption of opioid in the patient-controlled mode (10.1 ± 8.5 mlvs. 16.6 ± 12.0 ml, P = 0.013). Conclusions: Our data suggest that oxycodone and fentanyl demonstrated similar effects, and therefore oxycodone maybe a good alternative to fentanyl in postoperative pain management. Further studies in various clinical settings will beneeded to determine the adequate potency ratio.
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Myofascial pain syndrome of gluteus minimus mimicking lumbar radiculitis -A case report-
박중호,심광석,신영민,이치우,이상곤,김은주 대한마취통증의학회 2015 Anesthesia and pain medicine Vol.10 No.1
Myofascial pain syndrome (MPS) can be characterized by paincaused by trigger points (TrPs) and fascial constrictions. Patientswith MPS of the gluteus minimus muscles often complain ofsymptoms such as hip pain, especially when standing up after sittingor lying on the affected side, limping, and pain radiating down tothe lower extremities. A 24-year-old female patient presenting withmotor and sensory impairments of both lower extremities wasreferred to our pain clinic after initially being diagnosed with lumbarradiculitis. Under the impression of MPS of the gluteus minimusmuscles following through evaluation and physical examination ofthe patient, we performed trigger point injections under ultrasonographyguidance on the myofascial TrPs. Dramatic improvement of thepatient’s symptoms was observed following this treatment, and shewas discharged without any further remaining symptoms.
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