• Medical Lasers
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• 제10권1호
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• pp.7-14
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• 2021

In cancer therapy, it is often desirable to use precision medicine that involves treatments of high specificity. One such treatment is the use of photo-triggered theranostic nanoparticles. These nanoparticles make it possible to visualize and treat tumors specifically in a controlled manner with a single injection. Several novel and powerful photo-triggered theranostic nanoparticles have been developed. These range from small organic dyes, semiconducting and biopolymers, to inorganic nanomaterials such as iron-oxide or gold nanoparticles, carbon nanotubes, and upconversion nanoparticles. Using photo-triggered theranostic nanoparticles and localized irradiation, complete tumor ablation can be achieved without causing significant toxicity to normal tissue. Given the great advances and promising future of theranostic nanoparticles, this review highlights the progress that has been made in the past couple of years, the current challenges faced and offers a future perspective.

• Asian Pacific Journal of Cancer Prevention
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• 제17권2호
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• pp.473-478
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• 2016

Hepatocellular cancer is a very common cause of cancer related deaths worldwide. Only 30-40% of patients present with early-stage disease open to curative treatments, such as resection or transplantation, while others can only undergo local therapies or palliative care. Various trans-arterial approaches have been used for treatment of hepatocellular carcinoma in patients who need a down-staging to liver transplantation, and who are not candidates for transplantation or radiofrequency ablation. Transarterial chemoembolization (TACE), transarterial embolization (TAE), drug-eluting beads, and radioembolization have been used for locoregional control, and have been shown to prolong the overall survival when compared with supportive care. In this review, we discuss patient selection, pre- and post-procedure imaging, techniques, safety, and clinical outcomes related to these therapies. Newer advances with future directions in various fields related to trans-arterial therapies are also discussed.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제16권3호
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• pp.359-370
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• 1994

The reconstruction of major head and neck defects must be an integral part of the overall cancer treatment plan. The priorities of surgical treatment of head and neck tumor are 1) local tumor control, 2) relief of pain, 3) avoidance of difficult dressing, 4) provision of oral continence, and 5) ability to swallow and manage saliva. The recent advances in reconstructive surgery including the development of musculocutaneous flaps and microvascular free tissue transfer have allowed the surgical restoration of head and neck tumor defects that previously were not possible. These techniques have provided the opportunity to undertake larger, more aggressive resection while at the same time permitting functional rehabilitation. The timing of reconstruction demands on the nature of the resection, the ability of the ablative and reconstructive teams to coordinate efforts, the overall health of the patients, the patient's needs and wishes. So, we report to emphasize current methods for restoring major head and neck tumor defects after tumor ablation, reviewing for the reconstructive operations, postoperative complications, and postoperative sequelae etc, of patients from Jan, 1990 to Dec, 1993.

• 한국전기전자재료학회논문지
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• 제11권3호
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• pp.174-180
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• 1998

In this work, the properties of FRP, which is applied recently in the composite insulating materials, by thermal treatment were investigated. The specimens were epoxy glass laminates fabricated by thermal press method and had the volume content of 46[%] cutted $45^{\circ}C$ in the fiber direction and 1.0[mm] thickness. The experimental results showed that the amount of weight loss, wettability, surface potential, and surface resistivity increased up to 200[$^{\circ}C$] as a function of temperature. Usually, most degradations caused the hydrophilic to decrease the contact angle. But, in this work on thermal-degradated FRP, we can confirm the introduction of hydrophobic properties by cross-linking and the ablation of polar small-molecules rather than chain scission and oxidation. Finally, weight loss and contact angle increased. These phenomena show the existence of hydrophobic surface. With the change to the hydrophobic surface and the electrical potential and resistivity on FRP surface increased. But, the dielectric properties and tensile stength are decreased.

• Transactions on Electrical and Electronic Materials
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• 제8권6호
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• pp.246-249
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• 2007

A triple-band antenna was developed and fabricated by LDS(Laser Direct Structuring) process. The effects of the plating rate and heat treatment condition were investigated and the gains of fabricated antennas were measured at various frequencies. The laser irradiated surface shows clearly that there are prominence and depression. It shows anchoring effect between a plating material and ablation surface. The plating rate was decreased when the plating material is exhausted in the solution. This solution needs to refreshed by the new aid solution. The copper plating thickness is decreased with the increase of heat treatment temperature in the same time but it does not change other condition. The gain of LDS antenna showed higher than the generally processed antenna. This result was related with practical use of the dimension and effective dielectric constant.

• 대한영상의학회지
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• 제84권6호
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• pp.1198-1210
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• 2023

최근에 우연히 발견되는 신장 종괴의 증가와 국소 치료, 표적 치료와 같은 신장암 치료 선택지의 다양화, 그리고 신장 이식의 보편화에 따라서 신장의 조직 검사가 증가하고 있는 추세이다. 그러나 신장은 피부부터 장기까지의 거리가 멀어 조직 검사의 난이도가 높은 편으로 특히 초심자들은 신장의 조직 검사를 부담스럽게 여길 수 있다. 이 종설에서 우리는 신장 조직 검사의 적응증과 기술적인 고려 사항들, 진단 정확도, 그리고 합병증에 대해서 알아보겠다. 특히 실전적인 팁들을 다양한 증례들과 함께 알아보며 다양한 상황에서도 안전하고 효과적으로 조직 검사를 시행할 수 있게 도움이 되고자 한다.

• Biomolecules & Therapeutics
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• 제22권5호
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• pp.426-430
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• 2014

Prostate cancer is the most frequently diagnosed cancer. Although prostate tumors respond to androgen ablation therapy at an early stage, they often acquire the potential of androgen-independent growth. Elevated transcriptional activity of androgen receptor (AR) and/or signal transducer and activator of transcription-3 (STAT3) contributes to the proliferation of prostate cancer cells. In the present study, we examined the effect of resveratrol, a phytoalexin present in grapes, on the reporter gene activity of AR and STAT3 in human prostate cancer (LNCaP-FGC) cells stimulated with interleukin-6 (IL-6) and/or dihydrotestosterone (DHT). Our study revealed that resveratrol suppressed the growth of LNCaP-FGC cells in a time- and concentration-dependent manner. Whereas the AR transcriptional activity was induced by treatment with either IL-6 or DHT, the STAT3 transcriptional activity was induced only by treatment with IL-6 but not with DHT. Resveratrol significantly attenuated IL-6-induced STAT3 transcriptional activity, and DHT- or IL-6-induced AR transcriptional activity. Treatment of cells with DHT plus IL-6 significantly increased the AR transcriptional activity as compared to DHT or IL-6 treatment alone and resveratrol markedly diminished DHT plus IL-6-induced AR transcriptional activity. Furthermore, the production of prostate-specific antigen (PSA) was decreased by resveratrol in the DHT-, IL-6- or DHT plus IL-6-treated LNCaP-FGC cells. Taken together, the inhibitory effects of resveratrol on IL-6- and/or DHT-induced AR transcriptional activity in LNCaP prostate cancer cells are partly mediated through the suppression of STAT3 reporter gene activity, suggesting that resveratrol may be a promising therapeutic choice for the treatment of prostate cancer.

• Journal of Korean Neurosurgical Society
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• 제64권5호
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• pp.827-836
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• 2021

Objective : Trigeminal neuralgia is one of the most common causes of facial pain. Our aim is to investigate the efficacy and borders of percutaneous radiofrequency thermocoagulation in the treatment of trigeminal neuralgia. Methods : Between May 2007 and April 2017, 156 patients with trigeminal neuralgia were treated with radiofrequency thermocoagulation. These 156 patients underwent 209 procedures. In our study, we investigated the early and late results of percutaneous radiofrequency thermocoagulation under guiding fluoroscopic imaging in the treatment of trigeminal neuralgia. Barrow Neurological Institute (BNI) pain scale was used for grading the early results. In addition, Kaplan-Meier survival analysis was used to assess long-term outcomes. Of the 156 patients who underwent radiofrequency thermocoagulation for trigeminal neuralgia, 45 had additional disease. Patients with this condition were evaluated with their comorbidities. Early and late results were compared with those without comorbidity. Results : In 193 of 209 interventions BNI pain scale I to III results were obtained. Out of the 193 successful operation 136 patients (65.07%) were discharged as BNI I, 14 (6.70%) as BNI II, 43 (20.58%) as BNI III. Sixteen patients (7.65%) remained uncontrolled (BNI IV and V). While the treatment results of trigeminal neuralgia patients with comorbidity seem more successful in the early period, this difference was not observed in follow-up examinations. Conclusion : Finally, we concluded that percutaneous radiofrequency thermocoagulation of the Gasserian ganglion is a safe and effective method in the treatment of trigeminal neuralgia. However, over time, the effectiveness of the treatment decreases. Neverthless, the reapprability of this intervention gives it a distinct advantage.

• Journal of Chest Surgery
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• 제41권4호
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• pp.469-475
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• 2008

배경: 비디오흉강경에 의한 흉부 교감신경차단술은 겨드랑이다한증을 치료하는데 최소침습 치료방법의 하나이다. 여러 다른 수기들이 겨드랑이다한증을 치료하는데 이용되고 있으나 효과가 일시적이고 고비용인 단점이 있다. 본 연구는 겨드랑이다한증 치료에 있어서 2개 부위의 흉부교감신경차단수술(T3-4대 T4)후 조기와 만기 결과를 비교하였다. 대상 및 방법: 2002년 6월부터 2007년 5월까지 원광대학교병원 흉부외과에서 겨드랑이다한증환자 30명에서 2개 부위(T3-4대 T4)의 흉부 교감신경차단 수술 후 후향적으로 조사를 하였다. 모든 환자에서 수술은 단일기도관을 이용한 전신마취하에서 양측으로 동시에 2개의 2 mm 투관침과 2 mm 흉강경을 이용하여 시행하였다. T3-4군은 2002년 6월부터 2004년 6월까지 15명으로 T3-4 교감신경차단수술을 늑골 3, 4번 늑골 상에서 시행하였고, T4군은 15명으로 4번 늑골 상에서 4번 흉부 교감신경차단수술을 시행하였다. 양군의 치료의 만족도, 보상성 다한증의 빈도와 정도, 그리고 술 후의 합병증을 조사하였고, 또한 T.I.P.I에 의한 술 전 후의 체열변화를 조사하였다. 만기의 결과는 환자와의 전화면담으로 시행하였다. 결과: 평균 추적기간은 T3-4군은 $38.7{\pm}6.5$개월, T3군은 $18.7{\pm}3.6$개월이었다. 수술 직후의 만족도는 양군에서 100%이었으나 만기의 만족도는 보상성다한증의 정도에 의해서 T3-4군은 53.3%,74군은 93.3%를 보였다. 보상성다한증은 불편한 정도 이상이 T3-4군은 46.7%를 보였으나 T4군은 6.7%를 보여 만기의 만족도는 보상성다한증의 정도와 일치하였다. 또한 T.I.P.I에 의한 체열검사에서는 양군 모두 의의 있는 체열상승을 보여주었다. 술 후의 합병증으로는 경도의 공기가슴증과 늑간신경통을 보였으나 모두 다 문제없이 해결되었다. 결론: 양 수술의 수기는 겨드랑이다한증을 치료하는 데 효과적이었다. T4교감신경차단수술이 보다 높은 만족도를 보였고 보상성다한증의 정도와 빈도는 낮았다.

• Journal of Chest Surgery
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• 제39권12호
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• pp.953-956
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• 2006

절제 가능한 폐암에서 수술 절제가 가장 효과적인 치료이나 환자의 전신 상태가 불량하여 수술의 위험이 높은 경우 저침습적인 국소 치료방법을 적용한다. 냉동수술요법은 간, 전립선 암의 치료에서 우수한 암치료 효과와 안전성이 있는 치료 방법으로 폐암의 치료에서도 기관지 암종의 제거에 사용되며 폐실질의 종양에도 적용되고 있다. 본원에서는 양측폐에 각각 발생한 폐암으로 두 차례의 우상엽 및 좌상엽 폐절제 수술을 받고 치료 중에 남은 폐의 우하엽에 발생한 폐암으로 내원한 환자에게 저침습 수기로 냉동 치료를 실시하였고 2년간 추적 관찰하였다. 본 증례에서 적용한 냉동 치료의 방법과 결과를 보고한다.