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Isolated Facial Muscle Metastasis From Renal Cell Carcinoma on F-18 FDG PET/CT
Kang, Sungmin,Song, Bong-Il,Lee, Hong Je,Jeong, Shin Young,Seo, Ji-Hyoung,Lee, Sang-Woo,Ahn, Byeong-Cheol,Lee, Jaetae,Lee, Hui-Joong Wolters Kluwer Health, Inc. All rights reserved. 2010 Clinical nuclear medicine Vol.35 No.4
Facial muscle is a very rare site for distant metastasis of renal cell carcinoma (RCC). We present a 71-year-old man with isolated facial muscle metastasis 12 years after right nephrectomy for RCC. Magnetic resonance imaging showed a soft-tissue mass in the masticator space. F-18 fluorodeoxyglucose positron emission tomography/computed tomography showed a large hypermetabolic lesion in the right masticator space without other hypermetabolic lesion in the whole body. Subsequent biopsy and histologic study confirmed metastatic cancer from RCC.
Kang, Sungmin,Lee, Ho Won,Jeon, Young Hyun,Singh, Thoudam Debraj,Choi, Yun Ju,Park, Ji Young,Kim, Jun Sung,Lee, Hyunseung,Hong, Kwan Soo,Lee, Inkyu,Jeong, Shin Young,Lee, Sang-Woo,Ha, Jeoung-Hee,Ahn, Elsevier Science 2015 Molecular imaging and biology Vol.17 No.5
<P>This study aimed to track the migration of primary macrophages labeled with near-infrared (NIR) fluorescent magnetic nanoparticles toward chemically induced acute inflammatory lesions in mice and to visualize the effect of anti-inflammatory drugs on macrophage migration using combined fluorescence and magnetic resonance imaging (FLI/MRI).</P>
Perception of Long-Term Oxygen Therapy for Chronic Lung Diseases May Affect Poor Adherence in Korea
Hyun-Kyung Lee, M.D., Ph.D.,Hyo Jin Kim, M.D.,Hongyeul Lee, M.D.,Ji Young Yang, M.D.,Jae Ha Lee, M.D.,Seung Won Ra, M.D., Ph.D.,SungMin Hong, M.D.,Ho Young Lee, M.D.,Sung Hyun Kim, M.D.,Mi-Yeong Kim, 대한결핵및호흡기학회 2024 Tuberculosis and Respiratory Diseases Vol.87 No.1
Background: Long-term oxygen therapy (LTOT) improves the survival of patients withhypoxemia due to chronic respiratory diseases. The clinical outcomes of LTOT arestrongly associated with patient adherence. To improve the adherence of patients,physicians have focused on the efficacy of LTOT. However, poor adherence may stemfrom patients’ perceptions of LTOT. Herein we evaluated patients’ perceptions of LTOTaffecting adherence. Methods: We conducted a cross-sectional survey study using descriptive, open, andclosed-ended questionnaire. Patients using oxygen therapy (OT) or requiring it butavoiding OT responded to the questionnaires at three university hospitals. Results: Seventy-nine patients responded to the questionnaires. The number of patientsusing home and portable OT was 69 (93%) and 37 (46.3%), respectively. Patientswith good adherence were 22 (30.1%). Among patients with good adherence, 90.9%used oxygen according to physicians’ prescriptions whereas only 37.3% of those withpoor adherence followed physicians’ prescriptions (p<0.01). The reasons for avoidingusing home OT were fear of permanent use (50%), unwanted attention (40%), and lackof symptoms (40%). They avoided portable OT because of unwanted attention (39%),heaviness (31.7%), and lack of symptoms (21.6%). Conclusion: Patients on LTOT had the perception of the misunderstanding the effectsof OT and of psychosocial barriers to initiate or use LTOT. Considering these findings,health professionals need to provide effective education on the purpose of LTOT toimprove patient adherence to OT and provide sufficient support for the management ofpsychosocial barriers in patients using LTOT.
Kim, Eunhye,Ahn, Hyungju,Park, Sungmin,Lee, Hoyeon,Lee, Moongyu,Lee, Sumi,Kim, Taewoo,Kwak, Eun-Ae,Lee, Jun Han,Lei, Xie,Huh, June,Bang, Joona,Lee, Byeongdu,Ryu, Du Yeol American Chemical Society 2013 ACS NANO Vol.7 No.3
<P>The directed assembly of block copolymer nanostructures with large periods exceeding 100 nm remains challenging because the translational ordering of long-chained block copolymer is hindered by its very low chain mobility. Using a solvent-vapor annealing process with a neutral solvent, which was sequentially combined with a thermal annealing process, we demonstrate the rapid evolution of a perpendicularly oriented lamellar morphology in high molecular weight block copolymer films on neutral substrate. The synergy with the topographically patterned substrate facilitated unidirectionally structural development of ultrahigh molecular weight block copolymer thin filmseven for the structures with a large period of 200 nmleading to perfectly guided, parallel, and highly ordered line-arrays of perpendicularly oriented lamellae in the trenched confinement. This breakthrough strategy, which is applicable to nanolithographic pattern transfer to target substrates, can be a simple and efficient route to satisfy the demand for block copolymer assemblies with larger feature sizes on hundreds of nanometers scale.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/ancac3/2013/ancac3.2013.7.issue-3/nn3051264/production/images/medium/nn-2012-051264_0007.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nn3051264'>ACS Electronic Supporting Info</A></P>
Development of a 3D Bioprinter Using a Screw-Based Dispensing System for High Precision Printing
( Sungmin Lee ),( Jong-guen Choi ),( Hoon Seonwoo ) 한국농업기계학회 2023 한국농업기계학회 학술발표논문집 Vol.28 No.1
Bioprinting is a method of creating biological structures by precisely layering bio-ink containing living cells and biomaterials to design complex structures. The advantages of 3D Bioprinting are high quality, high-speed processing, the ability to print a variety of materials, simplicity, and low cost, and environmentally friendly. The precision of 3D bioprinting which is crucial for the reliability is affected by the characteristics of the bio-ink and the accuracy of the 3D bioprinter. Therefore, a accuracy of 3D bioprinter is needed to facilitate bioprinting. In this study, a 3D bioprinter for high precision and a screw-based dispensing system were developed, and the position accuracy of each axis was measured. It was confirmed that the position accuracy of the X-axis driving system was ±45 μm, the Y-axis driving system was ±22 μm and Z-axis driving system was ±38 μm. After applying compensation techniques, the position accuracy of all three axes was below ±5 μm. In conclusion, it is expected that the precision bioprinting would be possible by the developed system.