• 대한방사선기술학회지:방사선기술과학
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• 제44권3호
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• pp.183-187
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• 2021

The field size of the lumbar spine X-ray examination, which belongs to the most frequent examination in general radiography, is 5 times wider than the width of the lumbar spine. Exposure index (EI) as per International Electrotechnical Commission has a proportional relationship with the dose incident on the image receptor for clinical protocols in addition to RQA5, which is a calibration beam quality. In this study, the effectiveness of the set field size was evaluated through the change of EI according to the size of field during lumbar spine X-ray examinations. Lumbar anterior-posterior and lateral examinations was performed using a whole-body phantom, and the national average exposure conditions of Korea investigated in 2017 were introduced for the X-ray exposure. As a result of comparing the EI displayed on the console of digital radiography system for the three field size in ① 18 × 36 cm2 ② 25 × 36 cm2 ③ 36 × 36 cm2, the EI values showed a tendency to increase as the field size increased. Since the patient dose, such as organ dose around the lumbar spine, increases as the field size becomes larger, thus, if the EI obtained from the field size at a level that does not interfere with diagnosis is set as a reference, the effectiveness of the field size can be evaluated through the EI displayed on the console when the lumbar spine X-ray examination is conducted.

• Tuberculosis and Respiratory Diseases
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• 제41권3호
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• pp.277-288
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• 1994

연구목적 : "Field Cancerization"의 개념에 따르면, 폐암의 경우에도 여러 기관지들이 발암물질에 동시에 노출되어 다발적 암의 발생이 가능하고, 또한 암발생의 전단계인 precancerous lesion이 발견될 수 있다. 이에 저자들은 폐암의 주요 진단방법인 기관지 내시경 검사를 이용하여 방사선학적으로 나타난 병변뿐 아니라 전체 기관지에 대한 고찰을 하였다. 방법 : 1990년 4월부터 1993년 12월사이에 원자력 병원 내과에서 시행한 총 1855예의 기관지 내시경 검사상 2부위에서 이상소견이 발견되어 각각 조직검사를 시행한 총 21예를 대상으로 대상 환자의 성별, 연령별 분포, 흡연력, 각 병변의 조직학적 소견 및 방사선학적 소견, 병변위치, 치료 및 생존기간 등에 대하여 고찰하였다. 결과 : 총 21예중 14예에서 두 병변 모두 악성으로 나타났으며 이중 서로 조직학적 소견이 다른 경우는 6예, 서로 조직학적 소견이 같은 경우는 8예이었고, 총 21예 중 7예에서 한 병변은 악성, 나머지 병변은 양성으로 나타났다. 전체적으로 11예의 동시성 다발성 원발성 폐암이 있었으며 진단 당시 연령의 중앙치는 63세로 모두 남자였으며, 평균 흡연력은 40PY이었고, 조직학적 조합으로는 편평상피암의 조합이 5예, 소세포암과 편평상피암의 조합이 4예, 선암과 편평상피암의 조합이 1예, 편평상피암과 저분화암의 조합이 1예이었다. 기관지 내시경 검사상 2부위의 기관지 병변을 보인 총 21예중 15예에서 기관지 내시경 술전 방사선학적 검사상 한 병변만 나타났으며, 기관지 내시경 술전 방사선학적 검사상 두 병변 모두 나타난 6예종 5예에서 다발성 원발성 폐암이 나왔다. 결론 : 폐의 기관지 상피는 여러 발암물질에 동시에 노출되어 다발성 암의 발생 및 precancerous lesion이 생길 가능성이 높으므로, 폐암의 진단과정에 있어 방사선학적으로 나타난 병변뿐 아니라 전체 기관지에 대한 면밀한 기관지 내시경 검사 및 조직학적 확인이 필수적이다.

• 한국방사선학회논문지
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• 제16권2호
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• pp.123-129
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• 2022

최근 OECD 가입국 중에 MRI 보급률이 평균보다 높게 보급되고 있고, MRI 검사의 횟수도 증가하고 있다. MRI 검사는 다른 의료장비에 비해 검사시간이 길며, 환자의 움직임이 최소화되어야 한다. 그러므로 환자의 불편이 항상 뒤따른다. 이러한 불편한 환경에서 검사 시 정확한 검사가 어려우며 진단적 가치의 영상획득에는 어려움이 따른다. 기존 MRI 검사 시 MRI의 위험성과 협조를 구하기 위해 글로 되어있는 안내문을 제공 하였으나, 전문용어와 이해하기 어려운 문장들로 구성이 되어있어 이해도가 낮아졌다. 본 연구는 이러한 문제점을 보완하고 MRI 검사의 이해도를 높여 진단적 가치가 있는 영상획득에 도움이 되고자 하였다. 그리고 환자의 이해도와 만족도를 평가하여 리플릿 교육의 우수성을 평가하고자 한다. 본 연구의 결과에서 나타났듯이 리플릿 교육 전보다 교육 후의 이해도와 만족도의 점수는 각각 4.44±0.55 점, 4.85±0.37 점으로 높았으며, 학력에 따라 이해도의 차이는 유의함을 알 수 있었다. 그러나 MRI 검사 횟수는 차이가 없었다. 향후 MRI 검사에서 다양하고 이해하기 쉬운 리플릿 교육이 널리 보급되어 환자의 적극적인 검사 협조로 보다 질 좋은 영상을 획득할 수 있기를 기대한다.

• 대한족부족관절학회지
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• 제14권1호
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• pp.41-46
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• 2010

Purpose: Anterior drawer and varus stress test are commonly used for radiologic evaluation of chronic lateral ankle instability. However, there are controversies regarding the method of measurement and the normal value. This study was performed to investigate radiologic normal values in normal Korean adults and to analyze differences by age and gender. Materials and Methods: Sixty Korean adults were recruited and divided in three groups (20 in their twenties, 20 in their thirties, 20 in their forties). There were 10 males and 10 females in each group. The selection criteria were no history of ankle injury and no evidence of instability on physical examination. Radiologic measurement of varus talar tilt and anterior talar translation were performed through anterior and varus stress radiographs using Telos device (150N force). The measurement was repeated twice by three researchers, and intraobserver reproducibility and interobserver reliability were analyzed. The average talar tilt and anterior talar translation were obtained. Results: Talar tilt and anterior talar translation on ankle stress radiographs had good intraobserver reproducibility and interobserver reliability. Talar tilt was average $3.7^{\circ}$ and $5.1^{\circ}$ in male and female of twenties of age, $3.9^{\circ}$ and $4.8^{\circ}$ in their thirties, $3.4^{\circ}$ and $4.5^{\circ}$ in their forties. Anterior talar translation was average 3.5 mm and 4.2 mm in their twenties, 4.1 mm and 3.8 mm in their thirties, 3.6 mm and 4.1 mm in their forties. There was no significant difference in talar tilt and anterior talar translation by age. However, there was significant difference in talar tilt by gender. Conclusion: Normal range of talar tilt angle in Korean adults was below $8.3^{\circ}$, and normal range of anterior talar translation was below 7.6 mm. It seems to be able to serve as a good reference for radiologic evaluation and for treatment of chronic lateral ankle instability.

• Journal of Chest Surgery
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• 제35권8호
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• pp.621-625
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• 2002

식도평활근종은 식도에 발생하는 양성종양 중에서 그 빈도가 가장 흔하지만, 식도에서 발생하는 모든 종양 중단지 1%를 차지할 정도로 비교적 흔치 않은 식도 질환이다. 식도평활근종은 식도근층에서 유래한 벽내 종양이 대부분을 차지하지만, 점막근층에서 유래하여 식도강내 육경을 가진 폴립과 유사한 형도 약 1%의 빈도로 드물게 보고된다. 최근에 30세 남자환자가 연하곤란을 주소로 본원에 입원하였다. 방사선학적 검사에서 직경 5cm의 강내 종양이 경부식도에서 발견되었다. 내시경검사에서 종양조직은 정상 점막으로 덮여 있음을 보였다. 좌측 경부절개를 통해 식도 전벽에 종절개를 가한 후 육경성 종양을 성공적으로 적출할 수 있었다. 조직학적 검사에서 식도 평활근종으로 확진되었다. 연하장애 등 합병증없이 술후 회복과정은 순조로웠다.

• Journal of Korean Neurosurgical Society
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• 제50권2호
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• pp.139-142
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• 2011

Vertebral involvement of fibrous dysplasia (FD) is rare, especially in the cervical spine. Moreover, cervical FD presenting as a pathologic fracture in older patients is extremely rare. We report a case of symptomatic cervical FD associated with pathologic fracture in a 63-year-old man. The patient presented with progressive weakness of the left arm and pain in the shoulder and arm. Radiologic studies revealed a collapsed and typical 'ground glass' radiolucency of C4. Multiple lytic lesions involved the odontoid process of C2 and the body, left pedicle, and posterior elements of C4. Combined anterior and posterior decompression and reconstruction were performed. Post-operatively, the histopathologic examination confirmed FD. On the post-operative follow-up examination, the neurologic deficits had completely resolved.

• 한국임상수의학회지
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• 제34권4호
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• pp.275-278
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• 2017

An 8-year old female Korean Short Hair cat with a history of paralysis of both hind limbs less than 1 hour before admission was referred. On physical examination, the left hind limb was cold and there was no pulsation or mobility. On abdominal ultrasound examination, a thrombus 8 mm in length was found at the aortic bifurcation. The patient was diagnosed with hypertrophic cardiomyopathy (HCM) and cardiogenic pulmonary edema through radiologic evaluation and echocardiography. A tissue plasminogen activator (tPA) was applied intravenously using an accelerated dosing protocol (1 mg administered intravenously [IV] bolus, 2.5 mg IV over 30 min, 1.5 mg IV over 1 h) to treat the feline arterial thromboembolism. Within 12 h after administration of tPA, pulsation and mobility of both hind limbs were normal, without any noticeable complications. Clopidogrel was prescribed to prevent additional thrombus formation, and pimobendan, benazepril, and furosemide were prescribed for administration at home. The patient was discharged and survived 377 days.

• 대한두개안면성형외과학회지
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• 제19권1호
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• pp.1-2
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• 2018

Theoretically, panfacial bone fractures involve all three areas of the face: frontal bone, midface, and mandible. In practice, when two out of these three areas are involved, the term "panfacial bone fracture" has been applied. We can use physical examination, simple radiologic examination, and computed tomography study for diagnosis. Linear fracture are treated by conservative treatment. But, most of panfacial bone fracture patients need to be treated by open reduction and internal fixation. Facial width is most important thing that we need to care during operation. There are many ways about sequence like "top to bottom," "bottom to top," "outside to inside," or "inside to outside" and the authors prefer "top to bottom" and "outside to inside" ways. The authors apply arch bar from the first of surgery and then, set frontal bone fracture, midface fracture and mandible fracture in sequence. Usually, we remove the stitches for 5 days after surgery and the intraoral stitch removed after 2 weeks. Usually arch bar is going to be removed 4 weeks after surgery. We could get acceptable results with the above way.

• 대한물리치료과학회지
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• 제5권4호
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• pp.717-728
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• 1998

The Temporomandibural joint(TMJ) is one of the most frequently used joint in the body as $1,500{\sim}2,000$ times per day for the activities of chewing, swallowing, talking, yawing and sneezing. The TMJ are formed by condylar process of mandible and mandible fossa of temporal bone, separated by an articular disc. This articular disc divides into two cavities as upper cavity and lower cavity. The gliding movement occurs in the upper cavity of the joint, whereas hinge movement occurs in the lower cavity. The movements that are allowed at the TMJ are opening, closing, protrusion, retraction and lateral movement. A cause of TMJ dysfunction are capsulitis, internal derangement, osteoarthritis, rheumatoid arthritis, infection and inflammation near the joint, trauma on joint, ankylosis, subluxation or dislocation of joint, injury of articular disc, myositis, muscle contracture or spasm, myofascial pain dysfunction syndrome, dyskinesia of masticatory muscles, developmental abnormality, tumor, connective tissue disease, fibrosis, malocclusion, swallowing abnormality, wrong habits such as bite nail or hair, bruxism, psycological stress and Costen syndrome etc. Assessment of TMJ dysfunction consist of interview, observation, functional examination, palpation, reflex test, joint play test, electromyography and radiologic examination and behavioral and psycological assessment etc.

• 대한방사선기술학회지:방사선기술과학
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• 제20권1호
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• pp.39-42
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• 1997

This study was done at 45 medical facilities located in Seoul. The purpose of study is twofold. First, this is to investigate usually who extmines patients for UGI and how many films are used for the examination. Secondly, this is to evaluate image qualities of UGI in terms of representation of lesser curvatures, amount of Ba and air and other criteria for the exam. The results are as follows : 1. In most cases, the UGI is examined by the Dr(67%), by the RT(22%), and together(11%). 2. The total films used ranged from 5 sheets(42%) to 7 sheets(18%). 3. The amount of Ba given to Pt. was mostly $200{\sim}300\;ml$(60%) and gastrografin was used $3{\sim}4\;g$(86.6%) for the examination. 4. For the evaluation of qualities, lack of representation of lesser curvature was 86.7%, lack of Ba and air and bubble formation was 62%, 46.7% and 42.2% respectively.