고양이에서의 선천성 요추 기형의 평가

오이세,안지영,최호정,이영원 忠南大學校 獸醫科大學 附設 動物醫科學硏究所 2008 動物醫科學硏究誌 Vol.15 No.1

A 2-month old female siamese cat was presented with dyschezia and abdominal distention. On the abdominal radiographic view, the body of 5th lumbar was wider than the other lumbar vertebral bodies and 7th lumbar fused with sacrum. 5, 6, and 7th caudal lumbar vertebrae was fused with each other Based on the radiographic findings, this case was diagnosed as butterfly vertebra at 5th lumbar vertebra block vertebra of 7th lumar and sacrum, block vertebra of 5, 6, and 7th caudal lumbar vertebra. During 16 months, this cat did not have specific clinical sign associated lumbar vertebral deformity.

Quantification of Experimentally Induced-Pleural Effusion in Beagle Dogs: Radiography versus CT and Ultrasonography

이기자,오이세,정성목,이희천,박성준,이영원,최호정 한국임상수의학회 2008 한국임상수의학회지 Vol.25 No.2

This study was performed to quantify the pleural effusion in radiography, ultrasonography and computed tomography(CT) and to evaluate and compare the usefulness of these methods. Normal saline of 10 ml/kg was infused into the pleural space until a final loading volume of 60 ml/kg body weight was reached in six Beagle dogs. The radiographic examination was performed for the detection and quantification of pleural effusion. On the ultrasonographic study, the maximum perpendicular distance was measured between the surface of the lung and the thoracic wall to evaluate pleural effusion. On the CT image, pleural effusion was evaluated as the perpendicular distance to the thoracic surface in the maximum pleural effusion volume on any transverse images with soft tissue window. Statistical analysis was performed using linear regression test. The volume of pleural effusion and measurements of radiography and ultrasonography had no statistical relationship. However, a significant correlation was identified between the volume of pleural effusion and the depth at right (r2= 0.715), left (r2= 0.745), and mean right and left depth (r2= 0.844) on the CT images. All of the thoracic radiographs, ultrasonography, and CT are useful in recognition of pleural effusion. In quantification of pleural effusion, the CT measurement method is superior to radiographic and ultrasonographic measurements.

Imaging Diagnosis using Computed Tomography in Three Dogs with Giant Bullous Emphysema

최수영,오이세,강종일,이인,송유미,정우창,이기자,최호정,이영원 한국임상수의학회 2014 한국임상수의학회지 Vol.31 No.3

A miniature pinscher and two Maltese dogs were present with dyspnea, and radiography and computedtomography (CT) were performed. All dogs were diagnosed with giant bullous emphysema of the massive,hyperexpanded, and hypoattenuating bulla causing contralateral mediastinal shift. Giant bullous emphysema, the rarestform of bullous lung disease, is defined as a bulla that fills more than 30% of the hemithorax, and multi-detectorCT scanning could provide the useful information to confirm a diagnosis of giant bullous emphysema in older dogs. The radiographic and computed tomographic features for giant bullous emphysema were described.

말티즈 견에서 발생한 골육증

안지영,오이세,최호정,이영원 忠南大學校 獸醫科大學 附設 動物醫科學硏究所 2008 動物醫科學硏究誌 Vol.15 No.1

A 15-years old, castrated male Maltese dog presented a right hind limb lameness. On the radiographs of a right hind limb, a cortical and medullary bone lysis along the medial lesion of the proximal tibia was identified. The histophathologic examination after bone biopsy showed inflammatory cells in the cortex of the bone. So this patient was diagnosed as osteomyelitis of the right proximal tibia. After 6 months, this patient was amputated the right hind limb, because of the finding of the pulmonary metastasis with the thoracic radiography and computed tomography. The histophathologic examination after amputation was identified osteopoid substance and poorly differentiated osteoblast. Based on the history, physical examination, radiographic, and histopathologic findings, this case was diagnosed as osteosarcoma of the proximal tibia.

Comparison of Direct Digital Radiography and Conventional Film Screen Radiography for Detection of Peritoneal Fluid in Dogs

최호정,오이세,이기자,이영원 한국임상수의학회 2012 한국임상수의학회지 Vol.29 No.1

This study was performed to evaluate the sensitivity of conventional film-screen radiography (CFSR) and direct digital radiography (DDR) for detection of various amounts of free peritoneal fluid. Ten adult male healthy beagles were used in this study. Radiographic examinations were performed in the right lateral and ventrodorsal positions. Fluid was injected in increments of 2.0 ml/kg of body weight up to 20.0 ml/kg of body weight. The images of CFSR and DDR were evaluated by two veterinary radiologists for evidence of abdominal fluid without knowledge of injected fluid volume. Data were evaluated by using the receiver operation curve (ROC) analysis and the area under the curve (AUC). There was no significant difference in detection of peritoneal fluid between DDR and CFSR in the ROC analysis. The accuracy of CFSR (0.805) was relatively higher than that of DDR (0.733), based on the ROC analysis and AUC. AUC of CFSR was higher in most injection doses. These results suggest that CFSR is more accurate than DDR for the detecting peritoneal fluid. Therefore, for situation in which digital radiographs are equivocal or small amount of fluid is suspected, other imaging modalities, such as ultrasonography would be helpful for determining the presence of fluids.

개에서 발생한 결장직장 선암종 1례

최호정,안지영,오이세,정성목,박성준,조성환,이영원 한국임상수의학회 2008 한국임상수의학회지 Vol.25 No.5

An 8-year-old, female Pointer dog was presented with weight loss, hematochezia, and dyschezia. For the diagnosis, physical examination, complete blood counts, serum chemistry, radiography, ultrasonography, computed tomography, colonoscopy, cytology and histopathological examination were performed. The complete blood counts and serum biochemistry results were within the reference range. Ultrasonographic findings were presented with the thickened wall of the colon and rectum. Colonoscopy revealed irregular and ulcerated mucosal surface, mass and luminal narrowing of colorectal lesions. There were thickened wall and contrast enhancement of the lesion in colorectal region on the computed tomography. The cytologic examination suggested the adenocarcinoma. Postmortem histopathologic examination revealed adenocarcinoma. Based on these findings, the dog was diagnosed with annular colorectal adenocarcinoma.

개에서 자기공명영상을 이용한 뇌수두증과 척수공동증 진단

이기자,최수영,오이세,최호정,이영원 로얄에이알씨 주식회사 2007 로얄동물임상의학 Vol.- No.-

Syringomyelia는 척수 내에 액체로 찬 공간이 존재하는 것을 말하며, Hydromyelia란 척수중심관의 확장을 뜻한다. 하지만 영상진단학적으로 Syringomyelia와 Hydromyelia의 구분은 어려우며 보통 이들을 통틀어 척수공동증(syringohydromyelia)이라 부른다. 척수공동증의 원인은 정확히 밝혀지지 않았으나, 선천적 척추 기형 혹은 뇌척수액의 흐름 및 흡수 장애에 의해 발생한다는 보고가 있다. 특히 카베일러 킹 찰스 스패니얼(Cavalier King Charles Spaniel)에서 후두골의 기형 및 소뇌탈출(cerebellar herniation)과 병발하여 척수공동증의 발생 빈도가 높은 것으로 보고되어 있다. 임상증상은 병변의 위치 및 병발 질병에 따라 다양하며 주로 통증 또는 사지의 신경계 증상을 유발한다.

개에서 컴퓨터단층촬영술을 이용한 창상성 두개강 내 출혈의 진단

이기자,최수영,오이세,최호정,이영원 로얄에이알씨 주식회사 2007 로얄동물임상의학 Vol.- No.-

두뇌창상과 두개강내 출혈은 사람과 동물에서 흔하게 발생하며 동물의 경우, 교통사고에 의한 두개강내 출혈이 가장 많고 낙상, 총상, 교상 등에 의해 발생하기도 한다. 두개강내 출혈의 부위 및 정도에 따라 임상증상과 예후는 다양하며 빠른 진단과 치료를 통해 좀 더 좋은 예후를 기대할 수 있다. 두부의 방사선 평가는 두개골의 중첩에 의해 평가하기가 어려우며 컴퓨터단층촬영(computed tomography; CT) 및 자기공명영상(Magnetic resonance imaging; MRI)을 통해 두개강내 병변의 위치 평가 및 주변 신경구조물의 변화를 확인할 수 있다. 특히 두뇌창상이 있는 경우, MRI에 비해 상용화되어 있고 촬영시간이 비교적 짧으며 두개골의 골절 평가까지 가능한 CT가 선호된다.

Intra-abdominal Retained Surgical Gauze in Two Dogs

최호정,이기자,오이세,이재연,지현철,박성준,정성목,이영원 한국임상수의학회 2007 한국임상수의학회지 Vol.24 No.2

This report describes the retained surgical gauze in two dogs that had ovariohysterectomy previously. Theical gauze in two dogs was 30 and 16 months, respectively.Radiographic signs included localized abdominal mas (case 1, 2) and soft tisue swelling (case 2). Retained surgicalgauze was imaged by survey radiography, ultrasonography and computed tomography (CT). Ultrasonography revealeda hypoechoic mass with irregular hyperechoic center in case 1, and hypoechoic mass with oval hyperechoic centerand acoustic shadowing in case 2. In CT examination of case 2, hyperdense mas with a thick peripheral rim enhancingin contrast study was shown. Cytologic examination of both cases revealed abscess and granuloma respectively. Thesurgical gauze should be considered in animals with ahistory of previous surgery with abnormal mas.

Diagnostic Imaging of Liver Cirrhosis in a Shih-Tzu Dog

최호정,이기자,안지영,오이세,정성목,박성준,조성환,이영원,장진화,안세준 한국임상수의학회 2009 한국임상수의학회지 Vol.26 No.4

A 5-year-old, intact female Shih-Tzu dog was presented with 1 year history of icterus, ascites and anorexia. The serum biochemistry revealed elevated liver enzyme levels. Microhepatica and decreased serosal detail were detected in abdominal radiography. Abdominal ultrasonographic findings included irregular liver margins, multifocal hypoechoic nodules in the liver parenchyma, and ascites. Computed tomography (CT) showed multifocal hypodense nodules with ring-like contrast enhancement. Cytologic and histopathologic examination by liver core biopsy revealed fibrosis. Cirrhosis was diagnosed based on above results. This report focuses on the imaging characteristics of ultrasonography and CT for liver cirrhosis in a dog.