http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
A Case of Photic Retinal Injury Associated with Exposure to Plasma Arc Welding
( Sung Won Choi ),( Ko I Chun ),( Seok Joon Lee ),( Sang Hoon Rah ) 대한안과학회 2006 Korean Journal of Ophthalmology Vol.20 No.4
Purpose: To report of photic retinopathy induced by plasma arc welding, and the OCT (optical coherence tomography) results of damaged retinal lesions. Methods: We describe a case report of a 37-year-old male, working in the steel industry, who presented with central scotoma in both eyes. Results: On his first visit, one day after performing plasma arc welding with protective gear at work, his best corrected vision was 0.7 for both eyes. Ophthalmic examination of the fundus showed a round yellow lesion with an approximate size of 300 micrometers superonasal to the fovea of both eyes. On his next visit, one month later, his vision had recovered to 1.0, his symptoms had improved, and the ophthalmoscopic examination of the fundus revealed that the round yellow spots had disappeared from both eyes. Conclusions: To our knowledge, this is the first report of photic retinopathy induced by plasma arc welding, and the OCT (optical coherence tomography) results of damaged retinal lesions have not previously been reported. For these reasons, we report this case.
Rah, Jeong-Eun,Kim, Gwe-Ya,Oh, Do Hoon,Kim, Tae Hyun,Kim, Jong Won,Kim, Dae Yong,Park, Sung Yong,Shin, Dongho BioMed Central 2016 Radiation oncology Vol.11 No.-
<P><B>Background</B></P><P>The purpose of this study is to evaluate the dosimetric benefits of a proton arc technique for treating tumors of the para-aortic lymph nodes (PALN).</P><P><B>Method</B></P><P>In nine patients, a proton arc therapy (PAT) technique was compared with intensity modulated radiation therapy (IMRT) and proton beam therapy (PBT) techniques with respect to the planning target volume (PTV) and organs at risk (OAR). PTV coverage, conformity index (CI), homogeneity index (HI) and OAR doses were compared. Organ-specific radiation induced cancer risks were estimated by applying organ equivalent dose (OED) and normal tissue complication probability (NTCP).</P><P><B>Results</B></P><P>The PAT techniques showed better PTV coverage than IMRT and PBT plans. The CI obtained with PAT was 1.19 ± 0.02, which was significantly better than that for the IMRT techniques. The HI was lowest for the PAT plan and highest for IMRT. The dose to the OARs was always below the acceptable limits and comparable for all three techniques. OED results calculated based on a plateau dose–response model showed that the risk of secondary cancers in organs was much higher when IMRT or PBT were employed than when PAT was used. NTCPs of PAT to the stomach (0.29 %), small bowel (0.69 %) and liver (0.38 %) were substantially lower than those of IMRT and PBT.</P><P><B>Conclusion</B></P><P>This study demonstrates that there is a potential role for PAT as a commercialized instrument in the future to proton therapy.</P>
A Case of Photic Retinal Injury Associated with Exposure to Plasma Arc Welding
Sung-Won Choi,Ko-I Chun,Seok-Joon Lee,Sang-Hoon Rah 대한안과학회 2006 Korean Journal of Ophthalmology Vol.20 No.3
Purpose: To report of photic retinopathy induced by plasma arc welding, and the OCT (optical coherence tomography) results of damaged retinal lesions. Methods: We describe a case report of a 37-year-old male, working in the steel industry, who presented with central scotoma in both eyes. Results: On his first visit, one day after performing plasma arc welding with protective gear at work, his best corrected vision was 0.7 for both eyes. Ophthalmic examination of the fundus showed a round yellow lesion with an approximate size of 300 micrometers superonasal to the fovea of both eyes. On his next visit, one month later, his vision had recovered to 1.0, his symptoms had improved, and the ophthalmoscopic examination of the fundus revealed that the round yellow spots had disappeared from both eyes. Conclusions: To our knowledge, this is the first report of photic retinopathy induced by plasma arc welding, and the OCT (optical coherence tomography) results of damaged retinal lesions have not previously been reported. For these reasons, we report this case. Korean Journal of Ophthalmology 20(4):250-253, 2006
투구 동작에서 발생한 상완골 골정에 대한 치험 : 3 례 보고 Report of 3 Cases
나수균,정상훈,최중근,김연일,최창욱 대한스포츠의학회 1998 대한스포츠의학회지 Vol.16 No.2
Spiral fracture of humerus in healthy yound amateur baseball player during the throwing is considered as a rare injury. This was occurred in young amateur baseball player and unconditioned athelete, cortical hypertrophy is absent. We have exerienced three cases and study the meachanism of injury which was treated aurgically. We have good clinical results in all cases.