• 대한자기공명의과학회:학술대회논문집
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• 대한자기공명의과학회 2002년도 제7차 학술대회 초록집
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• pp.67-72
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• 2002

Real-time techniques are motivated by a number of factors including the potential for direct acquisition of diagnostic quality images, facilitation of patient-specific imaging parameters, and reduced examination time. Real-time MRI includes not only a rapid pulse sequence but also high speed image reconstruction and easy interactivity. The frame rate of the real-time technique used should be matched to the physiological timeframes under study. Principal applications thusfar have been in localization, fluoroscopic triggering, guidance of other processes, and potentially in the generation of diagnostic images of moving structures.

• Journal of Korean Neurosurgical Society
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• 제30권4호
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• pp.518-521
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• 2001

We present a rare case of a pituitary adenoma revealing a sedimentation level on MRI, which has not been previously documented. This 55-year-old woman was referred with the diagnosis of craniopharyngioma. She presented with four-month history of progressive headache and visual dimness. Neurological examination revealed a bitemporal hemianopsia and decreased visual acuity. Laboratory data including endocrine examination were unremarkable. An additional three-dimensional MRI was taken for further evaluation, and demonstrated a sedimentation level within the tumor. The patient underwent transcranial removal of the tumor. About 12cc of dark-red blood was aspirated from the tumor. Histological examination revealed a pituitary adenoma with hemorrhage. Postoperatively, the patient showed gradual improvement of visual function. Considering that the pituitary adenoma is one of more common tumors that cause tumoral bleeding, a cystic sellar tumor that has a sedimentation level should be sought first for a pituitary adenoma rather than a craniopharyngioma. This may have an important impact when deciding surgical approach.

• 한국임상수의학회지
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• 제29권4호
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• pp.328-330
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• 2012

본 환축은 안구진탕, 좌측 편측보행을 주증으로 내원하여 MRI 검사 및 조직병리학적 검사로 수막종으로 진단 하였다. 초기에 prednisolone과 hydroxyyrea를 투약하였으나 증상의 악화로 중단하였으며, 이후 lomustine 화학요법을 실시하여 임상 증상이 개선되어 유지해오다가 증상이 발현 된지 18개월째에 자연사한 증례이다.

• 치과방사선
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• 제27권1호
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• pp.273-281
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• 1997

Patient with complaints of swelling, pain in the maxillaly region and discomfort visited Seoul National University Dental Hospital in August last year. Clinical examination and diagnostic imagings implied he was suffered from fungal hyphal infection but no causative fungus was found by the histopathologic and microbiologic investigation. Therefore he was diagnosed with nonspecific inflammation. But as yet, we do think this case is very similar to some kinds of mucormycosis. So we presented this case for more thorough discussion.Followings are founded in the examination. 1. Patient had suffered from Diabetes mellitus and complained of stuffness, headache, swelling in buccal cheeks and paresthesia And we found more maxillary bony destruction and ulcer with elevated margin in the palate by clinical examination. 2. In the first visit, Plain films revealed general bony destruction of the maxilla, radiopaqueness in the sinonasal cavities. or and MRI showed soft tissue mass filled in the paranasal sinus except frontal sinus and bony destruction in involved bones. 3. No causative bacteria and fungus was found in the biopsy and microbiologic cultures. 4. Caldwell-Luc operation and curettage were carried and antJbiotics were taken for 4 months. But now he was worse than in the past 5. In the second visit, involvement of orbit, parapharyngeal sinus, clivus, cavernous sinus and middle cranial fossa were seen clearly in the or and MRI.

• 한방재활의학과학회지
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• 제19권3호
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• pp.81-90
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• 2009

Objectives : To analyze the therapeutic outcomes of back pain modalities in patients with disc herniation according to the change of Magnetic Resonanse Imaging(MRI) whom were treated with herbal medicine, chuna, acupuncture, bee-venom acupuncture. Methods : Clinical outcomes of 35 patients diagnosed with lumbar disc herniation by MRI examination, treated conservatively, were analyzed according to MRI follow-up change. Patients underwent MRI examaintion at baseline and after 24th week of treatment. Patients are divided into three groups ; improved, unchanged, worsened. 35 patients with lumbar disc herniation were treated with chuna therapy, acupuncture, bee-venom acupuncture once a week and took herbal medicine after a meal two times daily. The patients' clinical outcomes were assessed at baseline, 12th week, 24th week by Visual analogue scale(VAS), Oswestry disability index(ODI). Results : 1. MRI follow-up exams on regression of disc herniation resulted on 42.86% of cases by conservative treatment. 2. VAS(low back pain and sciatica) and ODI of disability of daily activities showed significant decrease in "improved" and "unchanged" groups compared to "worsened" group(P<0.05). 3. VAS(low back pain and sciatica) and ODI change after treatment did not show any relationship with MRI follow-up change(P<0.05). Conclusions : This study suggests that "improved" and "unchanged" groups compared to "worsened" group on MRI follow-up in patients with lumbar disc herniation were more effective when treated with herbal medicine, chuna therapy, acupuncture, bee-venom acupuncture. MRI follow-up change does not affect clinical changes in patients with lumbar disc herniation.

• 비파괴검사학회지
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• 제19권3호
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• pp.217-232
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• 1999

The ability to see the internal organs of the human body in a noninvasive way is a powerful diagnostic tool of modern medicine. Among these imaging modalities such as X-ray, MRI, and ultrasound. MRI and ultrasound are presenting much less risk of undesirable damage of both patient and examiner. In fact, no deleterious effects have been reported as a result of clinical examination by using MRI and ultrasound diagnostic equipment. As a result. their market volume has been rapidly increased. MRI has a good resolution. but there are a few disadvantages such as high price. non-real-time imaging capability. and expensive diagnostic cost. On the other hand, the ultrasound imaging system has inherently poor resolution as compared with X-ray and MRI. In spite of its poor resolution, the ultrasound diagnostic equipment is lower in price and has an ability of real-time imaging as compared with the others. As a result. the ultrasound imaging system has become general and essential modality for imaging the internal organs of human body. In this review various researches and developments to enhance the resolution of the ultrasound images are explained and future trends of the ultrasound imaging technology are described.

• Journal of Acupuncture Research
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• 제24권5호
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• pp.229-240
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• 2007

Objectives : The purpose of this study is to report the image changes of five cases of Cervical intervertebral disc Herniation after Oriental medicine Treatment. Patient & Methods : We examined 5 patients with Cervical intervertebral disc Herniation (HIVD of C-spine) who showed changes on MRI images before/after the treatment among HIVD of C-spine patients who visited Cervical Spine center, Jaseng Hospital of Oriental Medicine from March, 2006 to May, 2007. Results & Conclusions : In this study, the first MRI examination of HIVD of C-spine patients was performed at the first visit and re-examination of MRI was done after the treatment. We assessed clinical symptoms by using Numerical rating scales(NRS). In each case, the size of the disc herniation was considerably reduced in MRI image. NRS was also reduced significantly.

• 한국방사선학회논문지
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• 제8권7호
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• pp.389-395
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• 2014

본 연구는 교모세포종 (Glioblastoma multiform, GBM)에 대한 방사선 진단학적/치료학적 연구에 필수적으로 필요한 악성뇌종양 동물모델을 개발하기 위해 수행되었다. 악성뇌종양 동물모델 개발을 위해 뇌정위 기구(stereotactic instrument)를 이용하여 C6 세포(Glioblastoma cell line)를 SD rat의 우측 선조체 내에 동종이식하였다. 개발된 동물모델의 검증을 위해 MRI와 해부조직학적 검사방법을 이용하였다. 해부조직학적 검사방법으로는 H&E 염색법을 이용하였다. MRI를 이용한 종양 형성 검사에서 C6 세포 이식 7일 후 종양 형성이 확인되었고, 14일 후에는 이식한 우측 뇌의 대부분이 종양으로 변화한 것을 확인하였다. 해부조직학적 검사에서는 과세포 발현 및 다형성 세포에 의해 형태학적 변화가 발생하는 것을 알 수 있었다. 본 연구에서 개발된 악성뇌종양 동물모델은 in vivo level에서 교모세포종에 대한 방사선 진단학적 기술 개발 및 새로운 치료법 개발을 위한 필수적인 도구로서 활용될 수 있을 것이다.

• Journal of Radiation Protection and Research
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• 제38권3호
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• pp.157-165
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• 2013

To determine the factors affecting the external radiation dose rates of patients undergoing PET-MRI examinations and to assess the trends of these differences, we measured the changes in the dose rates of $^{18}F$-FDG during a set period of time for each body region. Consistent with theoretical predictions, the dose rate decreased over time in patients undergoing PET-MRI examinations. Furthermore, immediately after the $^{18}F$-FDG injection, the dose rate in the chest region was the highest, followed by the abdominal region, the head region, and the foot region. The dose rate decreased drastically as time passed, by 2.47-fold, from $339.23{\pm}74.70mSv\;h^{-1}$ ($6.73{\pm}5.79$ min) at the time point immediately after the $^{18}F$-FDG injection to $102.71{\pm}26.17mSv\;h^{-1}$ ($136.11{\pm}25.64$ min) after the examination. In the foot region, there were no significant changes over time, from $32.05{\pm}20.23mSv\;h^{-1}$ ($6.73{\pm}5.79$ min) at the time point immediately after the $^{18}F$-FDG injection, to $23.89{\pm}9.14mSv\;h^{-1}$ ($136.11{\pm}25.64$ min) after the examination. The dose rate is dependent on the individual characteristics of the patient, and differed depending on the body region and time point. However, the dose rates were higher in patients who had a lower body weight, shorter stature, fewer urinations, lower fluid intake, and history of diabetes mellitus. To decrease radiation exposure, it is difficult or impossible to change factors inherent to the patient, such as sex, age, height, body weight, obesity, and history of diabetes mellitus. However, factors which can be changed, such as the $^{18}F$-FDG dose, fasting time, fluid intake, number of urinations, and contrast agent dose can be controlled to minimize the external radiation exposure of the patient.

• 대한한방내과학회지
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• 제40권5호
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• pp.938-947
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• 2019

Objective: This study was performed to report the changes in symptoms and radiological consequences of a patient diagnosed with spinal neurofibroma and complaining of lower back pain. Methods: The patient was diagnosed with a spinal neurofibroma after MRI examination and was treated with traditional Korean medicine, including traditional Korean medication and acupuncture. We measured the change in symptom severity using a numerical rating scale (NRS) and the Oswestry Disability Index (ODI). We also used the EQ-5D (EuroQoL-5D) scale to assess the patient's quality of life. In addition, we examined the change in the size of the cyst by MRI twice after discharge: at about 3 months after discharge and at about 8 months after discharge. Results: After about 6 weeks of treatment, most pathological symptoms had decreased. The patient showed a decline in NRS and ODI scores and showed an increase in quality of life. The two MRI examinations after the discharge revealed a decrease in the size of the cyst. Conclusions: Traditional Korean medicine can be a solution for patients with spinal neurofibroma causing neurological pain.