• Nuclear Medicine and Molecular Imaging
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• v.41 no.5
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• pp.350-358
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• 2007

Purpose: Localizing and differentiating a metastatic lesion of differentiated thyroid cancer (DTC) by using radio iodine whole body scan could be difficult because a whole body scan (WBS) lacks anatomic information. This study was performed to evaluate the usefulness of radio-iodine SPECT/CT for differentiating equivocal lesions. Materials & Methods: Among 253 patients with DTC who had undergone radio-iodine scan between February and July 2006, 26 patients were enrolled (M:F = 8:18, Age $50.7{\pm}12.5$ years) in this study. The patients had abnormal uptakes in the WBSs that necessitated precise anatomical localization for differentiating between a metastatic lesion and a false-positive lesion. SPECT/CT was performed for the region with abnormal uptake in the WBS. WBS and SPECT/CT were evaluated visually. Metastases were diagnosed based on the results of the radio-iodine scan along with the results of other radiological examinations and serological tests. Results: Based on the WBS images, 13 were suspected with cervical lymph node (LN) metastases in 16 patients with abnormal neck uptake, and in the 11 patients with abnormal extra-cervical uptakes, extra-cervical metastases were doubtful in all. After SPECT/CT was performed, the diagnostic results were altered for 16 patients (62%). SPECT/CT revealed that only 5 patients had cervical LN metastases, while 3 patients had extra-cervical (mediastinal) LN metastases. Overall, there was a 58% (15/26) change in diagnoses and plans for treatment due to SPECT/CT. Among 8 patients suspected with metastases on SPECT/CT, 6 patients underwent another radio-iodine therapy. In 96% (24/25) of the patients, the results of SPECT/CT corresponded with those of further radiological examinations and with other clinical information. Conclusion: Radio-iodine SPECT/CT images permitted the differentiation of abnormal radio-iodine uptake and improved anatomical interpretation in DTC.

• The Journal of Korean Society for Radiation Therapy
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• v.13 no.1
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• pp.109-112
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• 2001

1. 목적 : head and neck cancer 환자의, C-T 영상을 이용한 방사선치료계획시 치과 보철물에 의해 발생하는 artifact가 선량 계산에 미치는 영향을 분석하고자 한다. 2. 재료 및 방법:두 경부와 유사한 크기의 Polystyrenes Phantom ($20{\times}20{\times}25cm^3$) 을 제작하고, 팬톰내에 금으로 인공보철물을 제작하여 보철물 부착 전.후를 C-T Scan (High Speed Advantage, GE, US) 하였다. artifact에 의한 영향을 쉽게 분석하기위해 팬톰내에 다른 구조물은 만들지 않았으며 두가지 방법으로 얻어진 영상을 이용하여 조사면의 크기와 조사 방향을 변화 시켜 가며 1문 조사(SSD 100 cm)에 의한 치료 계획(3D RTP system, Prowess, US)을 수립하여 기준점(5,10 cm depth)에서의 선량 변화를 비교 분석하였다. 아울러 3회 반복 scan하여 artifact에 발생 유형과 CTNo을 이용한 density을 분석하였다. 3. 결과: C-T Scan으로 얻어진 image 상에 나타난 Artifact는 CT no $-1000{\sim}+2775$(기준 $-1000{\sim}+3700$)까지의 다양한 값을 가지며 보철물을 기준으로 방사형태로 분포하였다. artifact가 선량 계산에 미치는 영향을 분석한 결과 보철물 사용시 5cm깊이의 기준점에서 절대선량은 평균 $+1.5{\pm}2.8\%$, 10 cm 깊이에서는 $+1.8{\pm}3.5\%$의 오차를 보였다. 조사방향에 의한 오차는 artifact에 대해 측면 조사한(gantry $270^{\circ}$)경우에서 높게 관찰되었다. 4. 결론: 두 경부 종양의 방사선 치료시 치과 보철물에 의한 artifact는 흔히 관찰가능하며 본 실험을 통해 다양한 형태와 다양한 density을 가짐을 알수있었다. 영상에 나타난 정도에 비해 선량계산에 미치는 평균 오차는 낮게 평가되었지만 조사 방향과 보철물의 위치에 따라 변동이 크게 나타날 수 있어 치료 계획시 가능한 artifact의 영향을 적게 받는 빔의 선택이 정확한 선량 계산에 도움을 줄 것으로 사료된다.

• Korean Journal of Head & Neck Oncology
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• v.20 no.1
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• pp.19-23
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• 2004

Background and Objectives: Neck metastasis is one of the most important prognostic factor in head and neck squamous cell carcinoma. Recently, elective neck dissection has been widely accepted for accurate pathologic staging and elective treatment of neck. Occult metastasis rate of laryngeal cancer varies widely depending upon authors. To evaluate the rate and characteristics of occult metastasis and efficacy of the elective neck dissection in clinical N0 laryngeal cancer, we performed this study. Materials and Method: Seventy two patients (supraglottic cancer: 19 cases, glottic cancer: 53 cases) who underwent surgery for laryngeal cancer as an initial treatment from 1993 to 2002 were evaluated. All was underwent elective neck dissection at the time of surgery for the primary treatment. The record of patients and pathologic report were reviewed retrospectively. Results: Occult metastasis rate of supraglottic and glottic cancer were 42.1% (8/19) and 9.4% (5/53), respectively. According to T stage, the occult meastasis of supraglottic and glottic cancer was 20%, 0% in T1, 36.4%, 0% in T2, 100%, 40% in T2, 100%, 20% in T4, respectively. Occult metastasis was mostly confined within level II (69.2%), III (76.9%), IV (23.1%). Conclusion: Based on ours results, elective neck dissection might be needed in treating of clinically N0 all supraglottic cancer and advanced T3, T4 glottic cancer.

• Journal of Chest Surgery
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• v.39 no.5 s.262
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• pp.407-410
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• 2006

Carotid artery-internal jugular vein arteriovenous fistula is very rare, but it should be suspected in case of vascular injury by neck trauma because the diagnosis may be missed due to anatomical complexity of neck, We report a 57-year old male who had the carotid artery-jugular vein arteriovenous fistula caused by gunshot injury in the neck 44 years ago.

• Journal of Chest Surgery
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• v.29 no.2
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• pp.244-247
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• 1996

Multiple symmetric lipomatosis is a rare disease characterized by progressive growth of subcutaneous fat masses which are located symmetrically at neck, shoulders, chest, abdomen and groin. Recent surveys revealed a high incidence of combined somatic and autonomic neuropathy. The exact cause of the disease is not known. We have experienced one case of multiple symmetric lipomatosis with mediastinal involvement with symptomatic compression of trachea. The patient was a 55-year-male, complaining of dyspnea and slowly enlarging multiple symmetric masses at the neck, shoulders, chest, abdomen, flank and groin over a period of 10 years. He had a habit of excessive alcohol intake for many years. The fatty masses in the neck and the upper mediastinum including peritracheal region were excised through transverse cervical incision. But, because of the incomplete excision of peritracheal fatty tissue, we performed reoperation for the relief of residual tracheal compression at the 15th postoperative day. Two days later emergent tracheostomy was performed due to postoperative pneumomediastinum and subcutaneous emphysema. He could discharge with permanant tracheostomy.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1993.05a
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• pp.102-102
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• 1993

Deep neck infections, which affect soft tissue and facial compartment of head and neck, may cause life-threatening complications despite the advent of antibiotics. The authors recently experienced 19 cases of these infections at Daegu Catholic Hospital and the following results were obtained. 1.The age of onset was from two to sixty one with the mean age of thirty nine, and 13 cases(68%) were male and 6 cases(32%) were female. 2.The sites of infections were submandibular space 11 cases(58%), parapharyngeal space 7 cases(37%), and retropharyngeal space 1 case(5%). 3.The isolated organisms of 12 cases were 6 cases(50%) of hemolytic streptococcus, 3 cases(25 %) of staphylococcus aureus, 3 cases(25 %) of no growth. 4.Without any remarkable complications, all cases were treated with a) surgical drainage with antibiotic therapy 13 cases(68%) b) conservative management 6 cases(32%)

• Journal of the Korean Society of Radiology
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• v.81 no.4
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• pp.933-938
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• 2020

Brachiocephalic venous aneurysm (BVA) development is an extremely rare, particularly as a primary vascular disorder. BVAs may be misinterpreted as lymphadenopathies owing to the variable degrees of enhancement seen in imaging studies, especially among patients with underlying malignancy. We report a BVA that mimicked lymph node metastasis on CT in a 60-year-old female who had undergone subtotal gastrectomy for stomach cancer. After follow-up chest CT with different bolus times and Doppler ultrasonography, a venous aneurysm originating from the brachiocephalic vein was diagnosed. We emphasize that, to make an accurate diagnosis, physicians should be aware of the potential diagnostic pitfalls and have a high index of suspicion for BVA when encountering certain lesions in the cervical area.

• The Korean Journal of Nuclear Medicine
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• v.38 no.1
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• pp.52-61
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• 2004

Purpose: Cervical lymph node metastasis is the most important factor of the prognosis and therapeutic planning in head and neck cancer. With increasing interest of minimally invasive neck surgery, more accurate preoperative assessment of cervical lymph node becomes more essential. We evaluated the diagnostic accuracy of $^{18}F$ FDG-PET in the assessment of lymph node metastasis in patients with primary head and neck cancer and compared the results with those of CT/MRI. Materials and Methods: Thirty-two patients (M/F=27/5, $56{\pm}10yr$) with biopsy proven head and neck cancer (16 supraglottic cancer, 9 tongue cancer, 7 others) underwent FDG-PET and CT/MRI (25/7) within 1 month before neck dissection. Based on lymph node level, the diagnostic sensitivity and specificity of FDG PET and CT/MRI for the metastasis of cervical lymph node were compared. Results: Of 153 lymph node levels dissected in 32 patients, 32 lymph node levels of 19 patients were positive for metastasis by histopatholologic examination. The overall sensitivity and specificity of FDG-PET were 88% (28/32) and 93% (113/121), whereas those of CT/MRI were 56% (18/32) (p=0.002) and 92% (112/121), respectively. The diagnostic sensitivity and specificity of FDG-PET were different according to location of lymph node levels, and those of ipsilateral level 11 were lower than those of other levels. Conclusion: FDG-PET is more sensitive in detecting metastatic cervical lymph node in head and neck cancer than CT/MRI. FDG-PET might be useful in guiding the extent of neck dissection.

• Journal of the Korean Society of Radiology
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• v.15 no.2
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• pp.201-210
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• 2021

This study was conducted not only to find out the effect of straight body exercise on neck pain, necks disability and neck length change of turtle neck syndrome patients but also to provide fundamental data for this field in the future. Number of 60 persons were selected by pre-test and divided to 21 persons in straight body exercise group, 19 persons in exercise group and 20 persons in control group(non-exercise group). 5 kinds of straight body exercise were applied in straight body exercise group, 8 kinds of strengthening cervical vertebral exercise were applied in exercise group and no exercise was applied in control group. Neck pain, necks disability index and neck length were measured before and after exercise and 10 weeks later as well. The data were analyzed by SPSS(v18.0). In straight body exercise group and exercise group, neck length, neck pain and necks disability index were significantly decreased after eight weeks of exercise and there was no significant difference in control group. Neck length which was checked every week in straight body exercise group and exercise group was significantly decreased and there were significant differences after 3 weeks.. After 2 weeks of 8 weeks exercise, neck length, neck pain and necks disability were checked again in post test and those results were maintained just like 8 weeks exercise status. As above results, it was more efficient in the straight body exercise group than exercise group and control group to decrease neck pain, necks disability and neck length of turtle neck syndrome patients. Furthermore, after 2 weeks of 8 weeks exercise, the results were maintained just like 8 weeks exercise status. Therefore, the author consider that straight body exercise will be effective exercise for turtle neck syndrome patients, and this study would provide fundamental data for this field in the future.

• Proceedings of the Korea Water Resources Association Conference
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• 2008.05a
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• pp.1614-1618
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• 2008

일반적으로 우리나라 수해는 미개수 하천 지역의 외수침수와 더불어 홍수유출 단면 부족 및 내수배제 불량 등이 주요 원인이지만 하천 내 주요 수공구조물인 교량이나 보 등에 의한 홍수위 상승으로 발생한다. 특히, 교량은 도로의 교통기능에 중점을 둔 설계와 시공으로 수리학적으로 매우 불리한 위치에 건설되기도 하며 기존 교량폭의 확장이나 인접한 위치에 다른 교량들을 추가로 건설하여 하천의 한정된 통수단면적이 점차적으로 감소하는 등 하천관리에 많은 어려움이 가중되고 있다. 따라서 본 연구에서는 FLUMEN 모형을 이용하여 교량이 홍수위 상승 및 홍수범람에 미치는 영향과 이에 따른 제외지 침수면적의 변화를 파악하였다. 감천과 직지사천이 합류되는 구간을 대상으로 지형자료는 총 7곳의 교량을 고려하여 구축한 후 교량 유 무에 따른 조건별 부정류 모의를 실시하였다. 모형의 적용 결과 교량 건설에 따른 하폭 감소율은 김천철교 지점에서 10.92%로 가장 컸으며, 수위는 김천대교 지점에서 0.15m로 가장 크게 상승하였다. 또한 경부고속국도 주변의 수위는 경부고속철도 교량의 신설로 인해 140%까지 증가하는 것으로 나타났다. 홍수범람 모의 결과 교량 건설 전과 후에 제방 월류에 의한 침수가 발생하였고 교량 건설 후 범람면적과 침수심이 증가하였으며, 홍수범람의 주원인은 하천의 통수단면적이 작기 때문으로 나타났다.