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Monostotic Paget's Disease of the Lumbar Spine Mimicking Vertebral Metastasis: A Case Report
김덕규,은종필,박정수 대한척추신경외과학회 2011 Neurospine Vol.8 No.3
Paget’s disease of the bone is the second-most-common metabolic bone disease. However, it is rarely found in the Far East. Vertebral Paget’s disease usually occurs at multiple vertebral levels, with less than 20% of vertebral Paget’s disease being monostotic. Here, we present a rare case of monostotic vertebral Paget’s disease, which we initially misdiagnosed as a spinal metastasis. A 34-year-old man was admitted with a one-month history of lower back pain. Initially, computed tomography of the lumbar spine showed an osteolytic change of the L4 and mild expansion of the L4 vertebral body. Subsequently, magnetic resonance imaging showed a highly homogenously enhanced L4 vertebral body. We performed positron-emission tomography, bone scan, and tumor marker evaluation. However, we could not detect any likely primary origin of the spinal metastasis. Therefore, we carried out a needle bone biopsy under fluoroscopic guidance, and the bone specimen revealed Paget’s disease of the bone.
김덕규,김대환,장지수,임창수,김정철 대한신경외과학회 1992 Journal of Korean neurosurgical society Vol.21 No.4
The authors report three cases of ossification of ligamentum flavum causing thoracic myelopathy. The symptoms of all cases were numbness in the legs and feet and motor weakness. Preoperative diagnosis were simple spine X-ray, metrizamide CT and magnetic resonance imaging. There was satisfactory improvement in all cases after total laminectomy and medial facetectomy.
발기부전의 선별검사로서 파파베린유도 음경발기 촬영술의 재조명
김덕규,박정하,박희승,정경우,김종성 ( Deuk Gyu Kim,Chung Ha Park,Hee Seung Park,Kyung Woo Chung,Jong Sung Kim ) 대한핵의학회 1994 핵의학 분자영상 Vol.28 No.3
To reevaluate the clinical usefulness of erection penography for diffential diagnosis of impotence, we reviewed retrospectively the data of penography in 56 patients who were diagnosed as impotence by various diagnostic workup. Twelve normal males were studied as control group. Papaverine HC1 30mg was injected into the corpus cavernosum and simultaneously Tc HAS 20mCi was injected via an antecubital vein. After injection radioactivities in the penile area were detected for 30 minutes by gamma camera and time activity curve was displayed, We defined that transit time(TT) is the time to reach peak activity and erection persistent time(EPT) is the duration of time to maintain peak activity and venous index( VI ) is the ratio of radioact,ivity(R3Q/R ,). The result.s were as follows : The TT of arteriogenic group(10.7+2.8min) was significantly increased compared with those of control and venogenic groups(P<0.05, respectively). The EPT of venogenic group (6.2+6.8min) is significantly decreased compared with those of control and arteriogenic groups(P<0.05, respectively). The TT of psychogenic(15.2+5.5min) is significantly increased compared with those of control and arteriogenic groups(P<0.05, respectively). In conclusion erection penography was very useful for the diagnosis of vascular and psychogenic impotence and for differentiation between arteriogenic and venogenic but it could not differentiate mixed type or neurogenic from vascular or psychogenic.
Characteristics of Ga doped ZnO Thin Films Deposited by RF Magnetron Sputtering with Base Pressure
김덕규 한국진공학회 2019 Applied Science and Convergence Technology Vol.28 No.1
Ga doped ZnO thin films were grown with various base pressure by RF magnetron sputter system, and its structural, optical, and electrical properties were investigated. Effects of base pressure on the characteristics of Ga doped ZnO thin films were confirmed and a high quality GZO film was obtained by adjusting the base pressure. In our case, as the base pressure decreases, the crystal quality is improved, the RMS roughness is increased, the sheet resistance is decreased and the figure of merit is increased. According to X-ray diffraction results, the reduction of sheet resistance is caused by increasing the grain size. The transmittance in visible wavelength region (400 nm ~ 800 nm) has 85% ~ 87%. Therefore, the base pressure is a key parameter for obtaining high quality film.