The feasibility of shear wave elastography for diagnosing superficial benign soft tissue masses

여현정,김태윤,류정아 대한초음파의학회 2019 ULTRASONOGRAPHY Vol.38 No.1

Purpose: The purpose of this study was to investigate the feasibility of shear wave ultrasound elastography for differentiating superficial benign soft tissue masses through a comparison of their shear moduli. Methods: We retrospectively analyzed 48 masses from 46 patients from February 2014 to May 2016. Surgical excision, fine-needle aspiration, and clinical findings were used for the differential diagnosis. The ultrasonographic examinations were conducted by a single musculoskeletal radiologist, and the ultrasonographic findings were reviewed by two other radiologists who were blinded to the final diagnosis. Conventional ultrasonographic features and the median shear modulus were evaluated. We compared the median shear moduli of epidermoid cysts, ganglion cysts, and lipomatous tumors using the Kruskal-Wallis test. Additionally, the Mann-Whitney U test was used to compare two distinct groups. Results: Significant differences were found in the median shear moduli of epidermoid cysts, ganglion cysts, and lipomatous tumors (23.7, 5.8, and 9.2 kPa, respectively; P=0.019). Epidermoid cysts showed a greater median shear modulus than ganglion cysts (P=0.014) and lipomatous tumors (P=0.049). Conclusion: Shear wave elastography may contribute to the differential diagnosis of superficial benign soft tissue masses through a direct quantitative analysis.

부분층 화상에 적용한 건조소양막과 동종배양표피세포의 치료효과 비교

여현정,김준형,정영진,손대구,한기환 대한성형외과학회 2009 Archives of Plastic Surgery Vol.36 No.4

Purpose: In the partial thickness burn management, despite of several advantages, the use of human amniotic membrane has been limited. The authors applied dried bovine amniotic membrane(DBAM) to overcome disadvantages of amniotic membrane for partial thickness burn and compared the effectiveness with cultured allogenic keratinocytes(CAK) that have been recently used for the management of burn. Methods: 16 patients with partial thickness burn, the mean age of 38 ranging 12 to 59 years, between August 2007 and May 2008 were assigned to this study. Either DBAM or CAK was applied, and the secondary dressing was removed on the following day. To compare treatment effect, time for epithelization, Vancouver scar scale and chromameteric results were evaluated. Results: The time for epithelization of DBAM was 10.1 days, that of CAK was 9.1 days, and they were shorter than the previous 2 - 3 weeks. At the follow up Vancouver scar scale was 2.8 for DBAM and 3.0 points for CAK and showed good results. The result of chromameter showed that the L*, a*, and b* values of the area applied DBAM were 60.1, 13.6, and 13.3, respectively, and the values of the area applied CAK were 60.1, 12.4, and 12.4, respectively. It was found that the skin color of the healed area after burn was darker, the redness was higher, and the yellowness was lower. After dressing, significant side effects were not observed, and in the cases of applying CAK, it was inconvenient as the moving area had to be fixed. Conclusion: With CAK, DBAM has several advantages such as the shortening of the epithelization period, reduction of scar and pigmentation, and convenient application, etc. Thus it is an effective method for the partial thickness burn management.

시간 부사어 ‘이미’, ‘아직’에 대한 고찰

여현정 한국어학회 2024 한국어학 Vol.104 No.-

본 연구의 목적은 시간 부사어 ‘이미’와 ‘아직’의 중심 의미를 밝히는 것에 있다. 먼저, 상황의 ‘상적 특성’과 ‘이미’, ‘아직’의 관계와 관련하여, 상태, 행위, 완수, 성취의 네 가지 상황의 상적 특성을 중심으로 살폈다. ‘이미’는 상태나 상황의 전환 단계를 갖는 경우, 즉 상태 혹은 상황의 변화가 전제되는 경우에만 출현이 가능하다. ‘아직’은 ‘영구적 상태’인 경우에 출현이 제약되며, [+순간성] 상황과 결합이 제약된다는 추가적인 특성이 있다. 더불어, ‘이미’와 ‘아직’은 시점이나 상황 구간을 명시적으로 지시하지 않는다는 점에서 유사하다. ‘이미’는 담화상에서 상황이 발생할 것이라고 상정되는 시점으로부터 더 앞서는 인접한 시간도 상태 혹은 상황의 속성을 갖는다는 것을 의미하는 것으로 보았다. 한편, ‘아직’은 담화상에서 상황이 발생할 것이라고 상정되는 시점으로부터 이후의 인접한 시간에도 상태 혹은 상황이 지속됨을 의미하는 것으로 볼 수 있다고 논의하였다. The purpose of this study is to clarify the central meanings of the temporal adverbials ‘imi’ and ‘ajik’. First, the constraint on aspectual characters of situations―state, activity, accomplishment, and achievement―and the 'imi' and 'ajik' were examined. 'Imi' can only be combined with aspectual types that presuppose a transition phase, and ‘ajik’ has a characteristic that its appearance is restricted in the case of ‘Permanent state’. Moreover, sentences with 'ajik' convey the aspectual meaning of continuity. Additionally, ‘ajik’ is constrained from combining with situations that are [+punctual]. ‘Imi’ and ‘ajik’ are similar in that they do not explicitly indicate a specific point in time or time span. When ‘imi’ is added, it indicates that an earlier, adjacent time to the point at which a situation is assumed to occur in a discourse (T) has the property of situation. The addition of ‘ajik’ implies a later, adjacent time to T also has property of situation.

漢·魏晋南北朝시기 학술사상 속의 史部 인식 : 역사에서 허구로서의 '小說'의 인식 과정을 따라서

여현정 연세대학교 대학원 총학생회 2005 연세학술논집 Vol.41 No.-

한국어 시간 관련 문법 표지 연구: 정신공간 이론을 중심으로

여현정 담화·인지언어학회 2022 담화와 인지 Vol.29 No.4

Vessel Remodeling after Intima-to-Intima Contact Anastomosis

여현정,김효동,손대구,홍창배,권선영 대한성형외과학회 2017 Archives of Plastic Surgery Vol.44 No.2

Background Intima-to-intima microanastomotic vascular remodeling was explored, utilizing a polylactide-caprolactone absorbable vein coupler model (PAVCM), which was designed to simulate a non-absorbable counterpart system with the sole exception of being absorbable. Methods Six New Zealand white rabbits were used. After transection of the jugular vein, 2 PAVCMs were placed, 1 at each transected end. The stumps were slipped through the PAVCMs, and the venous wall was everted 90° to achieve intima-to-intima contact. Reanastomosis of the transected jugular vein was performed bilaterally in 3 rabbits. In the other 3 rabbits, the jugular vein (20 mm) harvested from one side was interpositionally grafted to the jugular vein on the opposite side to ease the anastomotic tension. Patency testing, ultrasonography, and histologic assessments were conducted postoperatively at weeks 2, 4, 12, 16, 22, and 26. Results All anastomotic sites were patent, without stenosis, occlusion, or dilatation. In the histologic sections, immature endothelial regeneration was observed at week 2, which was completed by week 4. Regeneration of the tunica media was noted at week 12. Between week 22 and week 26, the tunica media fully regenerated and the coupler dissipated entirely. Conclusions Despite the absence of a coupler to act as an anastomotic buttress, the structure and function of all the vessels appeared normal, even histologically. These outcomes are true milestones in the development of an absorbable vein coupler.

<틔움포럼 참가기> ‘틔움포럼’이라는 소통의 시간

여현정 국어국문학회 2022 국어국문학 Vol.- No.201

《太平廣記》『婦人』類 故事 연구

여현정 연세대학교 대학원 총학생회 2006 연세학술논집 Vol.43 No.-

‘-었-’의 기능 및 관련 현상 연구: 정신공간 이론을 중심으로

여현정 한국어의미학회 2021 한국어 의미학 Vol.74 No.-

The purpose of this paper is to explain the meaning of the prefinal ending ‘-ess-’ and related phenomena in modern Korean from the perspective of Mental space theory (Fauconnier 1985/1994, 1997; Cutrer 1994). This paper suggests that although ‘-ess-’ itself is not a space builder, it can construct an event space (space E) prior to BASE. An expression with ‘-ess-’ can mean the present result state of past event when FOCUS is located in the present space. Even in such cases, EVENT is located in space E which is prior to V-POINT. ‘-Ess-’ is, therefore, a past tense marker. The related phenomena can be explained as follows; First, even when the situation is true to the present, ‘-ess-’ can be used if the location of EVENT is prior to V-POINT. Second, the use of ‘-ess-’ in future situation can be explained by assuming non-factual space which expresses the resultant situation of EVENT space prior to it.

사지의 미용적 미세수술적 재건

여현정,손대구,김준형,한기환,Yeo, Hyeon-Jung,Son, Dae-Gu,Kim, Jun-Hyung,Han, Ki-Hwan 대한미세수술학회 2011 Archives of reconstructive microsurgery Vol.20 No.1

The aim of extremity reconstruction has focused on early wound coverage and functional recovery but rarely aesthetics. As the quality of life improves, however, the request for aesthetics has been growing. The authors has conducted retrospective reviews on the 86 cases that had extremity reconstruction using free flap, considering the characteristics of parts that had been assessed in primary operation between May 1996 and December 2010. Aesthetic grading was performed in four categories; color, texture, contour and marginal scar. Recipient sites were 42 hands, 19 feet, 14 lower extremities excluding feet and 10 upper extremities apart from the hand. Types of free flap were 16 latissimus dorsi free flaps, 13 anterolateral thigh free flaps, 12 dorsalis pedis free flaps, 8 transvers rectus abdominis free flaps, 7 gracillis free flaps, and 5 superficial temporal fascia free flaps. Total flap necrosis was seen in 8 cases(9.3%) and partial necrosis in 5 cases(5.8%). Secondary revision was done in 24 cases(27.9%) and the most common revision, debulking was done in 14 cases(16.3%). The authors has considered cosmetic aspects along with wound coverage and functional recovery in primary reconstruction. The results of aesthetic grading was 16.2 out of 20, and the secondary revision rate was reduced.