• Nuclear Medicine and Molecular Imaging
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• 제43권2호
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• pp.129-136
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• 2009

목적: I-123 진단 스캔은 분화 갑상선암 환자의 추적 관찰에 주요한 역할을 하고 있다. 이 연구는 분화 감상선암 환자의 재발과 전이를 발견하는데 있어서 5시간과 24시간 I-123진단 스캔을 비교하여 최적 영상 시점을 찾고자 하였다. 대상 및 방법: 분화 갑상선 암으로 진단되어 갑상선 절제술과 고용량 방사성옥소 치료를 받은 후 추적 관찰 중에 185 MBq(5 mCi)의 I-123으로 6시간과 24시간 진단적 전신 스캔을 시행한 498명의 환자들(남:녀=55:443, 연령: $47.6{\pm}12.9$ 세)을 대상으로 하였다. 같은 시기에 모든 환자들에서 혈액 검사와 경부 초음파를 시행하였다. 추가적인 방사성옥소 치료를 시행한 40명의 환자에서는 치료 후 I-131 스캔을 얻었으며 I-123 진단 스캔과 비교하였다. 결과: 총 498명의 환자들 중 440명(88.4%)에서 6시간과 24시간 영상이 일치하는 결과를 보였으며, 58명(11.6%)에서는 두 영상의 결과가 일치하지 않았다. 불일치를 보이는 58명 중 6시간 영상에서만 이상 섭취를 보이는 31명의 환자들은 모두 위양성 소견을 보였으며, 24시간 영상에서만 이상 섭취를 보이는 12명의 환자들에서는 4명의 잔류 갑상선 조직과 3명의 경부 림프절 전이가 확인되었고, 24시간 영상에서 더 뚜렷한 소견을 보이는 15명 중에서는 2명의 잔류 갑상선 조직과 1명의 경부 림프절 전이가 확인되었다. 추가적인 방사성옥소 치료가 시행된 40명 중 13명에서 두 영상이 불일치를 보였는데, 6시간 영상에서만 이상 섭취가 관찰되는 경우는 모두 위양성 소견을 보였고 24시간 영상은 치료 후 I-131 스캔과 일치하는 결과를 보였다. 결론: 갑상선 환자의 전이 및 재발의 추적 관찰에 있어서 I-123 24시간 영상이 6시간 영상에 비해 진단의 정확도가 더 우수하고 위양성을 줄일 수 있었다.

• 대한두개안면성형외과학회지
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• 제17권1호
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• pp.14-19
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• 2016

Background: Most nasal bone fractures are corrected using non-invasive methods. Often, patients are dissatisfied with surgical outcomes following such closed approach. In this study, we compare surgical outcomes following blind closed reduction to that of ultrasound-guided reduction. Methods: A single-institutional prospective study was performed for all nasal fracture patients (n=28) presenting between May 2013 and November 2013. Upon research consent, patients were randomly assigned to either the control group (n=14, blind reduction) or the experimental group (n=14, ultrasound-guided reduction). Surgical outcomes were evaluated using preoperative and 3-month postoperative X-ray images by two independent surgeons. Patient satisfaction was evaluated using a questionnaire survey. Results: The experimental group consisted of 4 patients with Plane I fracture and 10 patients with Plane II fracture. The control group consisted of 3 patients with Plane I fracture and 11 patients with Plane II fracture. The mean surgical outcomes score and the mean patient dissatisfaction score were found not to differ between the experimental and the control group in Plane I fracture (p=0.755, 0.578, respectively). In a subgroup analysis consisting of Plane II fractures only, surgeons graded outcomes for ultrasound-guided reduction higher than that for the control group (p=0.007). Likewise, among the Plane II fracture patients, those who underwent ultrasound-guided reduction were less dissatisfied than those who underwent blind reduction (p=0.043). Conclusion: Our study result suggests that ultrasound-guided closed reduction is superior to blind closed reduction in those patients with Plane II nasal fractures.

• 한국임상수의학회지
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• 제31권3호
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• pp.233-236
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• 2014

피부염 치료를 위해 스테로이드를 처방받은 경력이 있는 11년령 수컷 시추가 비만, 얇은 피모, 복부 팽만으로 내원하였다. 방사선 사진상 폐야 전반에 기관지-간질패턴과 뚜렷한 흉막음영이 관찰되었으나 신체검사상 이와 관련한 증상은 보이지 않았다. 복부 초음파상 부신은 정상크기이며 간실질의 에코성 상승을 나타내었다. 컴퓨터 단층촬영상 폐 중앙부는 간유리음영을 나타내었으며 변연부는 중앙부에 비해 저감약성을 띄고, 고감약성 결절음영이 폐 실질전반에 산재되어 있었다. 영상진단학적 소견과 부신피질자극 호르몬 검사결과를 바탕으로 의인성 부신피질기능항진증과 속발성 폐 석회화로 진단하였다.

• Clinics in Shoulder and Elbow
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• 제21권2호
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• pp.67-74
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• 2018

Background: Fatty degeneration of rotator cuff is a well-known predictor of postoperative outcome. The purpose of this study was to evaluate the clinical features of rotator cuff tears involving subscapularis, and investigate whether fatty degeneration quantified from only the upper subscapularis correlates better with clinical outcomes than quantified from the whole subscapularis. Methods: We retrospectively analyzed 315 consecutive patients who underwent arthroscopic repair for rotator cuff tears involving subscapularis with a minimum follow-up of 1 year. Preoperative and postoperative visual analogue score for pain, range of motion and functional scores were assessed. Integrity of the repaired tendon was assessed at the 1-year follow-up with either magnetic resonance imaging or ultrasonography. Results: The mean Goutallier grade of whole cross-section was significantly lower than that of upper cross-section (1.59 vs. 1.71, p<0.05), but significantly higher than that of lower cross-section (1.59 vs. 1.01, p<0.05). In analysis of 37 re-tears, the occupancy of severe fatty degeneration in upper cross-section was 86.5%, which was significantly higher than that seen in whole cross-section (56.8%, p<0.05). We calculated the cut-off tear size for prediction of re-tears as 19.0 mm for retraction and 11.0 mm for superior-inferior. The cut-off Goutallier grade was 2.5 for both whole and upper cross-sections, but area under the curve was greater in the upper cross-section than the whole (0.911 vs. 0.807). Conclusions: As fatty degeneration of upper subscapularis demonstrated a more distinct spectrum than whole subscapularis, we suggest that measuring fatty degeneration of upper subscapularis can be a more useful method to predict clinical prognosis.

• 대한방사선기술학회지:방사선기술과학
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• 제11권1호
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• pp.43-62
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• 1988

The purpose of this study is to analyze the problems of the Current Curriculum of Radiologic Technology Department in Junior College, try to find a future solution of the education of Radiologic Technology and a reform measure, and suggest a new substantial model. So this study refered to sundary records, posed a question by papers, made a reform measure of curriculum on the basis of the results, examined it throughly by discussion with the related professors and the industrials figures, and decided a new model. The characteristics of the reform measure reflected in the new model are as follows; 1. It increased the numbers of credits like 94 or 95 ones, to positively accept a developing medical technique and modern science. 2. It set up various general studies and offered a free selection. 3. It closely related majors and their credits to the national examination of lisence and the task of industrial job site. 4. It kept the balance between the periods of lecture, practice, training and their credits. 5, It reinforced the subjects of fundamental medical science such as Introduction to Medicine, Pathology, Biochemistry, Patient Care, etc. 6. It newly established Clinical Trainings as a regular education course. 7. It newly established Introduction to Computer Science, Ultrasonography and Magenetic Resonance Imaging, to cope with the development of the future medical technique. 8. It newly established Humanism in Medicine as a regular education course. 9. It changed the names of subjects resonably.

• Journal of Oral Medicine and Pain
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• 제45권3호
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• pp.49-55
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• 2020

Purpose: This study investigated the association between the objective indicator of masticatory function assessment and the masseter muscle thickness (MMT) using ultrasound imaging. Methods: A total of 99 subjects (males: 24, females: 75, mean age: 76) were analyzed. The maximum bite force (MBF) was measured with a pressure-sensitive sheet and an image scanner. The mixing ability index (MAI) was calculated by image analysis after asking the subjects to chew a wax specimen. The MMT during rest and clenching were obtained with a diagnostic ultrasound system, and the difference in MMT during rest and MMT during clenching was defined as the difference in masseter muscle thickness (DMMT). Multiple regression analysis was performed to determine the independent variables affecting MBF and MAI. Results: The MBF showed correlation with the number of remaining teeth (β=0.346, p=0.002) and DMMT (β=0.251, p=0.011). The MAI correlated with only the number of remaining teeth (β=0.476, p<0.001). Conclusions: The DMMT reflects the state of masseter muscle contraction, and can be used as a predictor as well as the number of teeth when assessing masticatory function.

• Imaging Science in Dentistry
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• 제49권4호
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• pp.301-306
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• 2019

Purpose: This report presents a procedure for performing power Doppler ultrasound-guided sialography using the phenomenon of increased blood flow and illustrates its application to practical patient cases. Materials and Methods: The salivary gland was scanned using ultrasound equipment (GE LOGIQ5 Expert^® device; GE Medical Systems, Milwaukee, WI, USA) to identify pathological findings related to the patient's chief complaint. To identify the orifice of the main duct, it should be cannulated using a lacrimal dilator. After inserting the catheter into the cannulated main duct, the position of the catheter within the duct was confirmed by ultrasound. A contrast agent was injected until the patient felt fullness, and ultrasound (B-mode) was used to confirm whether the contrast agent filled the main canal and secondary and tertiary ducts. Then, power Doppler ultrasound was performed to determine whether the salivary gland had increased blood flow. Results: In 2 cases in this report, a power Doppler ultrasound scan showed a significant increase in blood flow after contrast medium injection, which was not observed on a preoperative scan. Conclusion: Power Doppler ultrasound was found to be a simple, safe, and effective tool for real-time sialography monitoring.

• Nuclear Medicine and Molecular Imaging
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• 제41권3호
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• pp.252-254
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• 2007

Image fusion is fast catching attention as Wagner pointed out in his 2006 version of the recent progress and development presented at the annual meeting of Society of Nuclear Medicine. Prototypical fusion of bone scan and radiograph was already attempted at in 1961 when Fleming et al. published an article on strontium-85 bone scan. They simply superimposed dot scan on radiograph enabling simultaneous assessment of altered bone metabolism and local bone anatomy. Indeed the parallel reading of images of bone scan and radiography, CT, MRI or ultrasonography has been practiced in nuclear medicine long since. It is fortunate that recent development of computer science and technology along with the availability of refined CT and SPECT machines has permitted us to open a new avenue to digitally produce precise fusion image so that they can readily be read, exchanged and disseminated using internet. Ten years ago fusion was performed using Bresstrahlung SPECT/CT and it is now achievable by PET/CT and SPECT/CT software and SPECT/CT hardware. The merit of image fusion is its feasibility of reliable assessment of morphological and metabolic change. It is now applicable not only to stationary organs such as brain and skeleton but also to moving organs such as the heart, lung and stomach. Recently, we could create useful fusion image of cardiac SPECT and 64-channel CT angiograph. The former provided myocardial metabolic profile and the latter vascular narrowing in two patients with coronary artery stenosis and myocardial ischemia. Arterial stenosis was severe in Case 1 and mild in Case 2.

• Clinics in Shoulder and Elbow
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• 제20권4호
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• pp.183-188
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• 2017

Background: To evaluate the clinical outcomes and associated repair integrity in patients treated with arthroscopic repair for a transtendinous rotator cuff tear followed by resection of the remnant rotator cuff tendon. Methods: Between July 2007 and July 2011, we retrospectively reviewed patients who were treated for transtendinous full-thickness tears in the tendinous portion of the rotator cuff by arthroscopic repair. Clinical outcomes were evaluated using the American Shoulder and Elbow Surgeons (ASES) score, the Shoulder Rating Scale of the University of California at Los Angeles (UCLA), the Constant-Murley score, a visual analogue scale (VAS) pain score, and range of motion (ROM). The repair integrity was determined by magnetic resonance imaging or ultrasonography. Results: There were 19 shoulders with transtendinous full-thickness tears in the tendinous portion of the rotator cuff. The ASES, UCLA, Constant-Murley, and VAS pain scores showed significant improvements in function and symptoms (all p<0.001). The active ROM for forward flexion and abduction was also significantly improved (p=0.002 and p<0.001, respectively). The postoperative radiological examination showed cuff integrity without a re-tear in 68.4% of patients. However, the UCLA, ASES, and Constant-Murley scores were not significantly different between healed and re-torn group (p=0.530, p=0.885, and p=0.262, respectively). Conclusions: Although repair of transtendinous rotator cuff tears followed by resection of the remnant rotator cuff tendon in the footprint has a relatively high re-tear rate, no significant difference was observed in the short-term clinical results between the re-tear and healed groups.

• Childhood Kidney Diseases
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• 제5권1호
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• pp.69-72
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• 2001

대부분의 정상 소아는 하루에 수7회 정도씩 배뇨를 한다. 일부 소아에서는 하루에 2회 이하로 배뇨를 하는데, 이 경우를 infrequent voiding이라 지칭한다. 이들의 경우 대개 장기간 수의적으로 소변을 참아오는 경우가 대부분이다. 이러한 비정상적인 배뇨습관으로 인하여 종종 방광 용적이 증가되며, 잔뇨량이 늘어나고 배뇨의 욕구가 감소됨으로써 만성적인 방광확장과 함께 재발성 요로감염 및 신손상까지 초래될 수 있다. 본 보고자들은 13세의 여아에서 하루 2차례 이하로 매우 드물게 배뇨를 하는(가뭄뇨) 습관으로 인하여 요로감염과 신손상이 초래된 증례를 경험하였기에 문헌고찰과 함께 보고하고자 한다.