• 대한의용생체공학회:의공학회지
• /
• 제37권2호
• /
• pp.68-74
• /
• 2016

In this study, we investigated the rotational characteristics which were comprised of directionality and linearity of target registration error (TRE) as a study in advance to enhance the accuracy of contour-based registration in neuronavigation. For the experiment, two rigid head phantoms that have different faces with specially designed target frame fixed inside of the phantoms were used. Three-dimensional coordinates of facial surface point cloud and target point of the phantoms were acquired using computed tomography (CT) and 3D scanner. Iterative closest point (ICP) method was used for registration of two different point cloud and the directionality and linearity of TRE in overall head were calculated by using 3D position of targets after registration. As a result, it was represented that TRE had consistent direction in overall head region and was increased in linear fashion as distance from facial surface, but did not show high linearity. These results indicated that it is possible for decrease TRE by controlling orientation of facial surface point cloud acquired from scanner, and the prediction of TRE from surface registration error can decrease the registration accuracy in lesion. In the further studies, we have to develop the contour-based registration method for improvement of accuracy by considering rotational characteristics of TRE.

• 한국임상수의학회지
• /
• 제25권5호
• /
• pp.424-428
• /
• 2008

A 10-year-old castrated male Schnauzer (case 1) and a 13-year-old intact male Schnauzer (case 2) was referred with mass of left hind limb. We performed hemogram, serum chemistry, radiography, ultrasonography, computed tomography, fine needle aspiration and histopathology. The complete blood counts and serum biochemistry results were within the reference range. Radiography showed cutaneous mass with soft tissue density. The lesions of two dogs were revealed a definite marginated hyperechoic mass with vascularization in ultrasonography. Computed tomography showed an isodense mass in the left hind limb region with minimal contrast enhancing in case 1 and heterogenous enhancement in case 2. Cytology from ultrasonographic guided aspiration of the mass was suspected fibrous tissue-derived benign cell in two dogs. A surgical excision was performed in two dogs. In histological examination of the resected mass, cutaneous fibroma was revealed. The two patients were successfully treated by surgery and postoperative care. This report decribes and compares radiographic, ultrasonographic, computed tomographic, cytologic and histopathologic features of the cutaneous fibroma of two schnauzer dogs.

• Asian Pacific Journal of Cancer Prevention
• /
• 제15권10호
• /
• pp.4349-4352
• /
• 2014

Background: Pancreatic cancer has a high mortality rate because it is usually diagnosed late. Since little is known about this cancer in Iran, with the aim of improving this knowledge deficiency, we evaluated clinical, laboratory biomarkers, imaging findings and treatment modalities in Iranian patients with pancreatic adenocarcinoma. Materials and Methods: 131 cases of pancreatic adenocarcinoma in 2010-2013 were obtained from the Taleghani Hospital Record Department. Cases confirmed by histopathology from CT-guided biopsy, EUS-FNA and surgery examination were included. We excluded those with incomplete medical records. Results: The study included 131 subjects between 24 and 97 years of age and a mean age of $63{\pm}13.4$ years. Eighty (61.1%) were male and 51 (38.9%) female. Previous history included diabetes mellitus in 36 (27.5%), alcohol drinking in 5 (3.9%), smoker in 28 (21.4%) and opium addiction in 13 (10%). The common presenting history included weight loss in 79 (60.3%), abdominal pain in 77 (58.8%), fever in 11 (8.4%), nausea in 30 (22.9%), jaundice in 72 (55%), pruritus in 52 (39.7) and anemia in 33 (25.2%). CA19-9 levels with cut offs of 50, 100 and 200 U/ml were increased in 81%, 72% and 66% of patients, respectively. Tumor staging was: stage I, 3 (2.3%); stage II, 10 (7.6%); stage III, 58 (44.3%); and stage IV, 60 (45.8%). From 45 patients, 17 received ERCP inserted metallic stents and 22 plastic stents, the remaining 6 failed that PTC was done. Whipple surgery and chemotherapy were conducted for 10 and 29 patients, respectively. Conclusions: This disease affected older people and there was a male preponderance. The commonest risk factors were diabetes mellitus, smoking and cholelithiasis. The majority of patients presented with loss of appetite, loss of weight, jaundice, abdominal pain and discomfort. Almost all presented at late stages of the disease so that curative surgery was impossible. Also chemotherapy was only performed in a few patients as a neoadjuant treatment.

• 대한영상의학회지
• /
• 제85권2호
• /
• pp.421-427
• /
• 2024

이소성 유방조직은 겨드랑이에서 사타구니 선까지 유방 능선을 따라 발생할 수 있으며 가장 일반적으로 발생하는 부위는 겨드랑이이다. 이소성 유방조직에서 발생하는 원발성 암종은 극히 드물다. 왼쪽 겨드랑이에 부유방조직을 절제한 병력이 있는 61세 여성이 왼쪽 겨드랑이에 만져지는 종괴로 내원하였고 종괴의 평가를 위해 액와미부 촬영을 포함한 유방촬영술, 초음파 및 유방 MRI를 시행하였으며 특히 액와미부 촬영으로 왼쪽 겨드랑이의 특징적인 악성미세석화화의 양상과 범위를 평가하였다. 초음파 유도하 생검술을 통해 이 병변은 침윤성 유방암으로 진단되었고 조영증강 복부 CT에서 다발성 간전이가 확인되어 환자는 이후 고식적 항암요법을 받았다. 저자들은 겨드랑이 부유방 조직에서 발생한 드문 원발성 유방암에 대해 액와미부 촬영을 시행한 증례를 보고하고자 한다.

• Journal of Chest Surgery
• /
• 제29권1호
• /
• pp.43-51
• /
• 1996

인제대학교의과대학 부산 백병원 흉부외과학 교실에서는 1989년 3월 부터 1993년 10월까지 4년 7개월간 원발성 비소세포성 폐암으로 확진되고 수술받은 57례를 대상으로 관찰하였다. 성별은 남자 45명, 여자 12명 (M:F=3.8:1)이었고, 호발연령군은 50~59세 (45.6%), 60~69세 (35.1%)이였다. 대부분의 증상은 호흡기 계통으로 기침 59.6%, 흉통 42.1%, 혈담과 객혈 28.1% 그리고 무증상이 7%였다. 술전 진단상 양성율은 객담 세포진 검사 11%, 기관지 세척 세포검사와 생검은 각각 50%, 73% 였고 컴퓨터 단층 촬영술하 경피천자 생검은 836% 였다. 병리 조직학적 분류로 편평상피세포암이 56.1%, 선암이 22.8%, 기관지폐포암 7%, 혼합형 10.5%, 미분화 거대세포암 1.8%, 기타 1.8%이였다. 수술 방법은 일측전폐 절제술이 35.1%, 엽절제술 38.6%, 이 엽절제술 3.5%, 부분 절제술 7%, 개흥술 15.8%로 절제율은 84.2%였다. 병기별 분류는 병기 I이 28.1%, II가 22.8%, IIIa가 31.6%, IIIb가 17.5%였고, 절제율은 병기 I과 II가 100%, IIIa가 88.9%, 그리고 IIIb가 30%였다. 술후 합병증은 11례 (19.3%)에서 발생하였으며 수술로 인한 조기 사망은 없었다. 절제술을 시\ulcorner한 례에서 생존율은 1년, 2년, 5년에서 각각 87.0%, 61.6%, 44.9% 이었고, 병기별 3년 생존율은 병기 I이 75.8%, II가 16.9%, IIIa가 60.9%, IIIb가 50%였다.

• Korean Journal of Radiology
• /
• 제22권2호
• /
• pp.263-280
• /
• 2021

Percutaneous transthoracic needle biopsy (PTNB) is one of the essential diagnostic procedures for pulmonary lesions. Its role is increasing in the era of CT screening for lung cancer and precision medicine. The Korean Society of Thoracic Radiology developed the first evidence-based clinical guideline for PTNB in Korea by adapting pre-existing guidelines. The guideline provides 39 recommendations for the following four main domains of 12 key questions: the indications for PTNB, pre-procedural evaluation, procedural technique of PTNB and its accuracy, and management of post-biopsy complications. We hope that these recommendations can improve the diagnostic accuracy and safety of PTNB in clinical practice and promote standardization of the procedure nationwide.