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A Study on Signal Processing Algorithm for Seam Tracking in Pipeline Welding
Hyeong-Soon Moon,Jong-Cheol Kim,Jong-Jun Kim,Young-Baek Kim 제어로봇시스템학회 2013 제어로봇시스템학회 국제학술대회 논문집 Vol.2013 No.10
The productivity and reliability are regarded as most essential features of the automatic welding system. From practical point of view, the carriage and band system has been verified as one of most effective welding systems for pipeline laying. The productivity depends on several parameters such as a performance of the welding system, the level of operator’s skill and the reliable sensor systems. This application-oriented paper introduces new automatic welding equipment for pipeline construction. It is based on cutting-edge design and practical welding physics to minimize downtime due to the system faults. This paper also describes the control system which was designed and implemented for the automatic welding equipment. The system has the self diagnostic function which facilitates maintenance and repairs, and has the wireless network function via which the welding task data can be transmitted and monitored. The signal processing algorithm was also developed for the narrow welding groove in order to implement higher accuracy of seam tracking and fully automatic operation.
경피적 심낭배액술과 Trastuzumab 단독요법으로 치료한 심낭압전을 동반한 유방암의 심막전이
문형곤(Hyeong-Gon Moon),정은정(Eun-Jung Jung),박순태(Soon-Tae Park),송대현(Dae Hyun Song),하우송(Woo-Song Ha),최상경(Sang-Kyung Choi),홍순찬(Soon-Chan Hong),이영준(Young-Joon Lee),주영태(Young-Tae Joo),정치영(Chi-Young Jeong) 대한외과학회 2008 Annals of Surgical Treatment and Research(ASRT) Vol.75 No.2
Although autopsy studies suggest that malignant pericardial effusion is present in up to 15% of the patients suffering with malignancies, symptomatic pericardial effusion presenting as a first manifestation of systemic recurrence in a breast cancer patient is a rare condition. Symptomatic malignant pericardial effusion requires prompt attention and intervention since it can lead to the cardiac tamponade. Treatment of symptomatic pericardial effusion includes pericardial decompression and systemic or intrapericardial chemotherapy. We recently experienced a patient with early breast cancer who developed cardiac tamponade from malignant pericardial effusion as a first manifestation of systemic recurrence 4 years after her initial surgery. The patient was treated with percutaneous pericardiocentesis and she subsequently received systemic trastuzumab. After 6 cycles of trastuzumab, the follow-up CT showed complete disappearance of the pericardial effusion and the mediastinal lymph nodes.
7.0 Tesla MRI tractography in patients with trigeminal neuralgia
Moon, Hyeong Cheol,You, Soon-Tae,Baek, Hyeon Man,Jeon, Young Jai,Park, Chan-A,Cheong, Jei Jun,Lee, Youn Joo,Park, Young Seok Elsevier 2018 Magnetic resonance imaging Vol.54 No.-
<P><B>Abstract</B></P> <P>7.0 Tesla (T) high-resolution diffusion tensor imaging (DTI) can supply information on changing microstructures in cranial nerves. We investigated DTI parameters and the feasibility of DTI criteria for diagnosing trigeminal neuralgia (TN). In this study, 14 patients (28 hemispheres) of mean age 49.0 years (range, 31–64) with TN underwent DTI using 7.0 TMRI. We compared fractional anisotropy (FA), axial diffusivity (AD), mean diffusivity (MD), and radial diffusivity (RD) of affected-side and unaffected-side trigeminal nerves using DTI. We examined associations between DTI parameters and clinical characteristics for patients with TN. In patients with TN, affected sides showed significantly decreased FA and significantly increased MD, and RD compared with unaffected sides of trigeminal nerves. Nuclei were not significantly different among patients with TN. Barrow Neurological Institute (BNI) pain scores did not correlate with affected sides. 7.0 T DTI was useful for detecting neurovascular compression in patients with TN. The increased signal-to-noise ratio provided by 7 T MRI should be advantageous for increasing spatial resolution to detect microstructure changes to trigeminal nerves in patients with TN.</P>
Moon, Hyeong Cheol,Park, Chan-A,Jeon, Yeong-Jae,You, Soon Tae,Baek, Hyun Man,Lee, Youn Joo,Cho, Chul Beom,Cheong, Chae Joon,Park, Young Seok Elsevier 2018 Magnetic resonance imaging Vol.51 No.-
<P><B>Abstract</B></P> <P>The cingulate cortex (CC) is a brain region that plays a key role in pain processing, but CC abnormalities are not unclear in patients with trigeminal neuralgia (TN). The purpose of this study was to determine the central causal mechanisms of TN and the surrounding brain structure in healthy controls and patients with TN using 7 Tesla (T) magnetic resonance imaging (MRI). Whole-brain parcellation in gray matter volume and thickness was assessed in 15 patients with TN and 16 healthy controls matched for sex, age, and regional variability using T1-weighted imaging. Regions of interest (ROIs) were measured in rostral anterior CC (rACC), caudal anterior CC (cACC) and posterior CC (PCC). We also investigated associations between gray matter volume or thickness and clinical symptoms, such as pain duration, Barrow Neurologic Institute (BNI) scores, offender vessel, and medications, in patients with TN. The cACC and PCC exhibited gray matter atrophy and reduced thickness between the TN and control groups. However, the rACC did not. Cortical volumes were negatively correlated with pain duration in transverse and inferior temporal areas, and thickness was also negatively correlated with pain duration in superior frontal and parietal areas. The cACC and PCC gray matter atrophy occurred in the patients with TN, and pain duration was associated with frontal, parietal, and temporal cortical regions. These results suggest that the cACC, PCC but not the rACC are associated with central pain mechanisms in TN.</P>