• Journal of Yeungnam Medical Science
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• v.25 no.2
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• pp.102-107
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• 2008

Background : Malignant pulmonary nodules account for 30 to 40 percent of all solitary pulmonary nodules (SPNs). Therefore, characterization of SPNs is very important for treatment. Recently, dynamic CT has been widely used for tissue characterization and formation of differential diagnoses. The purpose of this study was to evaluate the ability of dynamic CT to formulate the differential diagnosis of SPNs. Materials and Methods : Nineteen patients with SPNs underwent dynamic CT (unenhanced scans, followed by a series of images at 20, 40, 60, 80, 100, 120, 140, 160, and 180 sec after intravenous injection of contrast medium). Diagnosis of SPN was performed based on pathologic findings in needle biopsy samples. Peak enhancement, net enhancement, slope of enhancement, and maximum relative enhancement ratio of the SPN were measured on dynamic CT, and Levene's test was performed to assess benignancy and malignancy. Results : Twelve SPNs were confirmed to have malignant pathology. There were no significant differences between benign and malignant nodules with respect to peak enhancement (p=0.787), net enhancement (p=0.135), or slope of enhancement (p=0.698). The maximal enhancement ratio was increased in malignancy compared to benignancy, but the difference was not statistically significant (p=0.094). Conclusion : In our study, the hemodynamic characteristics of dynamic CT were not significantly different between benign and malignant nodules. Therefore, long-term studies of larger patient samples are required to confirm our findings.

• The Journal of the Korean life insurance medical association
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• v.17
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• pp.63-67
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• 1998

연구배경 : 상부위장관 조영술결과 유소견을 보인 환자와 그들이 호소하는 증상, 그들의 사회적 환경, 생활특성이 어떠한 관련이 있는가 알아보고자 하였다. 연구대상 : 1995년 1월부터 1997년 12월까지 제일생명(주) 부속의원 종합검진센타에 내원한 8,982명을 대상으로 상부위장관조영술을 시행하고 이와함께 상부위장관 증상에 대한 설문조사를 시행하여 그 결과를 분석하였다. 결과 : 상부위장관 조영검사자 총 8,982명중 유소견자는 598명(6.66%)이며, 그중 남자 420명(70.24%), 여자 178명(29.76%)으로 나타났다. 유소견중에는 십이지장 궤양이 제일 많았으며 그 중 남자 $30{\sim}40$세에서 제일 많이 발견되었다. 증상발현율은 진단결과와 다른 큰 차이가 없었으며 각 증상중에 진단결과와 유의한 관련을 갖는 것은 없었다. 결론 : 상부위장관 증상은 기질적 원인보다 성별, 연령이나 생활환경의 영향을 더 받는 것으로 보여 진단에 있어 호소하는 증상을 고려하기보다 위장관조영술과 더불어 상기요인에 대한 고려가 필요하다.

• The Korean Journal of Nuclear Medicine
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• v.38 no.2
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• pp.205-208
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• 2004

The two major classes of magnetic resonance (MR) contrast agents are paramagnetic contrast agents, usually based on chelates of gadolinium generating T1 positive signal enhancement, and super-paramagnetic contrast agents that use mono- or polycrystalline iron oxide to generate strong T2 negative contrast in MR images. These paramagnetic or super-paramagnetic complexes are used to develop new contrast agents that can target the specific molecular marker of the cells or tan be activated to report on the physiological status or metabolic activity of biological systems. In molecular imaging science, MR imaging has emerged as a leading technique because it provides high-resolution three-dimension maps of the living subject. The future of molecular MR imaging is promising as advancements in hardware, contrast agents, and image acquisition methods coalesce to bring high resolution in vivo imaging to the biochemical sciences and to patient care.

• 건강소식
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• v.35 no.6
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• pp.16-17
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• 2011

음식물을 받아들여 소화하는 위장. 최대 1,500ml 정도까지 커지는 위장은 식도와 연결된 분문으로 음식물을 받아 소화시키고 잠시 저장한 뒤 유문을 통해 십이지장으로 내려보낸다. 중요한 역할을 하는 만큼 이상이 생기면 소화 불량, 더부룩함, 배탈, 속 쓰림, 설사 등 여러 증상으로 SOS신호를 보내는데, 이 같은 경고를 쉽게 무시해 버리는 게 문제다. 특히 위암은 조기에 발견하면 90% 이상 완치될 수 있으므로 정기적으로 위장을 검사해야 한다. 내시경을 넣는 위내시경검사, 조영제를 마시고 X선 촬영을 진행하는 조영촬영검사가 대표적이다.

• Journal of The Korean Radiological Technologist Association
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• v.30 no.1
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• pp.131-142
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• 2004

In this study, when intravenous contrast medium was injected in spiral CT study, the effects of injection volume, injection rate, injection mode, location and lumen of IV catheter on enhancement of contrast medium in aorta, portal vein and liver parenchym

• Proceedings of the Korean Aquaculture Society Conference
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• 2006.05a
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• pp.125-126
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• 2006

• Proceedings of the Korean Aquaculture Society Conference
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• 2006.05a
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• pp.157-158
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• 2006

• Proceedings of the Korean Aquaculture Society Conference
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• 2006.05a
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• pp.155-156
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• 2006

• Proceedings of the Korean Aquaculture Society Conference
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• 2006.05a
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• pp.153-154
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• 2006

• Proceedings of the Korean Aquaculture Society Conference
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• 2006.05a
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• pp.151-152
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• 2006