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전태주 대한영상의학회 1996 대한영상의학회지 Vol.34 No.3
Purpose : To evaluate CT findings of primary adenocarcinoma of the lung and to assess distant metastasis atthe time of diagnosis. Materials & Methods : CT findings of 150 patients with adenocarcinoma, confirmed byhistopathologic methods, were classified as central or peripheral lesions and pattern analysis of typical findingsnoted in this cancer was carried out. Intra and extrathoracic metastases of adenocarcinoma were also investigated.Results : Of 150cases of adenocarcinoma of the lung, 121 were found to be of the peripheral type and 29 were ofthe central type. These peripheral lesions comprised 105 nodules, 11 consolidations, four cavities and one linearlesion, while the central lesions consisted of 19 cases of atelectasis and tens of bronchial wall thickening. Lungto lung(nine cases), lymphangitic(five cases), and pleural metastasis(16 cases) were presented as intrathoracicmetastasis, while bone(17), brain(six), liver(two) and adrenal metastasis(one case) were presented asextrathoracic metastasis. Conclusion : The most common radiologic finding of adenocarcinoma is a peripheral singlemass or nodule but consolidation, cavity or tubular lesions, as well as atelectasis or bronchial wall thickeningalone can be presented as unusual findings of adenocarcinoma. As a consequence, it is in many cases difficult todifferentially diagnose. Distant metastasis was also noted in many cases of early T-stage lesion, so tosuccessfully manage the patient, careful evaluation of the metastasis is essential.
전태주 대한영상의학회 1995 대한영상의학회지 Vol.32 No.5
Authors reviewed mammographic ultrasonographic and MRI findings a patient with breast cysticercosis, which wasoperated and pathologically proved. mammography showed a 1cm sized round radioopaque lesion with curvilinearcalification, which was located near the pectoralis major muscle. Ultrasonografic findings showed heterogenoushypoechoic cystic lesion with internal hyperechoic nodule and posterior acoustic shadowing. T2WI and protondensity image MR image showed low signal intensity with cresentic high signal intensity portion. 2D-FLASH dynamicMRI showed intermediate signal intensity and peripheral signal void area, which was not enhanced with Gd-DPTA. Thepossibility of cysticercosis can be considered be considered when a cytic lesion is discovered near the pectoralismuscle in a patient living in an endemic area.
전태주 대한영상의학회 1995 대한영상의학회지 Vol.32 No.4
Purpose : Magnetization transfer imaging(MTI) is a new imaging contrast technique. Our MT pulse sequence isdesigned as fixed time interval between echo and MT pulse. This study was performed to evaluate the influence ofvariations in TR/TE on MTR in T1 weighted image of normal brain tissue on this kind of MT pulse sequence.Materials and Methods : Seven healthy volunteers in twenties of age as the objectives, MRI was taken under variousTR/TE( TR/TE ; 700/14, 650/14, 750/14, 700/20 and 1500/20msec). MTR was calculated from signal intensities,measured at the same point in both pre and post MT images and statisticslly analized. The MR imager used in thisstudy was 1.0T Magnetom 42SP(Siemens, Erlangen, Germany) and the parameters of additional MT pulse sequence wereoffset 1,000Hz and bandwidth 250Hz, and posteriorly located to echo with 7.7 msec fixed interval. Offset of thisMT pulse was variable. Result : In white matter of brain tissue from a normal person, MTR was 34-39%(average 37%)for TR and TE of 700/14 in T1WI and 33-36%(average 35%) for TR/TE of 650/14 , and 34-38% (average 35%) for TR/TEof 750/14 which showed no statistical difference. However, in case of 1500/20 of TR/TE, MTR was 26-28%(average26%) which is statistically significant. With TR/TE of 700/14 as the standrd value, the MTR of gray and whitematter were 37% and 29% irespectively, showing a definiate difference of statistical means. Signal from CSF inventricles is rarely influenced by MT pulse. Conclusion : Conclusively, a subtle variation in TR/TE in T1WI haslittle influence on MTR but wide range of variation in TR/TE as in proton density image induces significantdifference in MTR on this kind of MT pulse sequence. Therefore, the exchangeable usage of MTR data would bepossible in narrow range of TR/TE change but difficult in wide range of variation.
복부 외상 후에 발생한 주췌관 가로절단과 동반된 가성낭종의 췌관 스텐트 삽입 치료 1예
전태주,박현,서동대,오태훈,신원창,최원충,김기환 대한소화기내시경학회 2008 Clinical Endoscopy Vol.37 No.2
복부 외상으로 인한 췌장 손상은 드물지만 이환율과 사망률이 높다. 주췌관의 손상이 있는 경우 초기 합병증으로 췌장 누공, 가성낭종, 농양, 출혈, 췌장염 등이 발생할 수 있다. 췌장 손상으로 발생한 가성낭종의 치료로 경과 관찰, 피부경유배출, 내시경 배액술 및 외과 치료가 포함된다. 피부경유배출의 경우 국소 마취 후에 전산화단층촬영술이나 초음파 유도로 시행하므로 비교적 안전하고 효과적이나 주췌관의 손상 정도와 부위가 크면 췌장 절제가 필요할 수 있다. 췌관 스텐트 삽입술은 급성, 만성 췌장염, 가성낭종, 췌관 협착, 췌장 누공 등에서 시행되어 적용 범위가 넓어지고 있다. 췌장 외상 후에 발생한 가성낭종 치료에서 주췌관의 부분 파열과 동반된 경우에는 췌관 스텐트 치료가 효과적이나 주췌관의 완전 가로절단과 함께 발생하는 경우는 외과 치료가 주치료이며 췌관 스텐트 치료의 효과는 아직 명확하지 않다. 이에 저자들은 복부외상 후에 발생한 주췌관 가로절단과 동반된 가성낭종을 외과 치료 없이 췌관 스텐트 삽입으로 치료한 1예를 경험하였기에 보고하는 바이다.
전태주,신장열,이유미,김세화,안철우,차봉수,김경래,이현철,허갑범,박희백,임승길 대한내과학회 2002 대한내과학회지 Vol.62 No.6
Adrenal cysts are rare lesions usually discovered incidentally during surgery, or at the time of autopsy. Most adrenal cysts are generally asymptomatic and small, less than 10 cm in diameter. When adrenal cysts enlarge sufficiently, they cause pain and gastrointestinal disturbances or become palpable. When cystic lesions in upper abdomen are found, many cystic lesions such as hepatic, splenic, renal and pancreatic cysts should be considered. It's difficult to differentiate between benign and malignant lesions. Usually these cystic lesions have been excised to rule out malignancy. Herein we report a case of adrenal endothelial cyst which was detected in a 63-year-old female patient during a routine health examination by ultrasonography.