Ui-Jong Kim

BACKGROUND: Detection of active pulmonary tuberculosis on chest radiographs (CRs) is critical for the diagnosis and screening of tuberculosis. An automated system may help streamline the tuberculosis screening process and improve diagnostic performance. METHODS: We developed a deep learning-based automatic detection (DLAD) algorithm using 54c221 normal CRs and 6768 CRs with active pulmonary tuberculosis that were labeled and annotated by 13 board-certified radiologists. The performance of DLAD w

Purpose: This study aimed to propose an effective end-to-end process in medical imaging using an independent task learning (ITL) algorithm and to evaluate its performance in maxillary sinusitis applications. Materials and Methods: For the internal dataset, 2122 Waters’ view X-ray images, which included 1376 normal and 746 sinusitis images, were divided into training (n=1824) and test (n=298) datasets. For external validation, 700 images, including 379 normal and 321 sinusitis images, from three

Background and Purpose Te beneft of carotid endarterectomy (CEA) is directly infuenced by the risk of perioperative adverse outcomes. However, patient-level risks and predictors including coronary stenosis are rarely evaluated, especially in Asian patients. Te aim of this study was to determine the relationship between the vascular risk factors underlying CEA, including coronary stenosis, and postoperative outcome. Methods One hundred and ffy-three consecutive CEAs from our hospital records were

Gliosarcoma is a rare central nervous system tumor usually located in the supratentorial area. Here we report a rare case of a gliosarcoma that developed in the cerebellar hemisphere in a 70-year-old woman. Computed tomography (CT) and magnetic resonance imaging (MRI) of the brain revealed an infratentorial mass of which radiological features were similar to those of glioblastoma. The tumor was diagnosed by pathology as a gliosarcoma. Though rare, gliosarcoma should be considered in the differen

We present an extremely rare case of the atypical choroid plexus papilloma in an adult which developed at the trigone of right lateral ventricle. A 62-year-old woman presented with the history of intermittent and gradually progressive headache and left side hemiparesis for 6 months. The brain magnetic resonance image showed highly enhanced and well demarcated mass at the trigone of lateral ventricle attached to the choroid plexus. Gross total resection was performed by transcortical approach via

Supratentorial hemangioblastomas (HBs) are rare, and pituitary stalk HBs are extremely uncommon; therefore, pituitary stalk evaluation is often overlooked. Herein, we report the development of pituitary stalk HB over a 20-year period and the importance of regular long-term follow up for patients with HBs.

We report magnetic resonance image (MRI) and magnetic resonance spectroscopy (MRS) findings in a patient of cerebral fat embolism (CFE) occurred in a 26-year-old woman after an autologous fat injection into the face. After initial neurologic symptom onset, MRI and MRS data were obtained two times to investigate repeated CFE. We obtained the MRS data in the two different time intervals and two different echo times to compare the lesions with normal brain parenchyma. The results of MRS data showed

Cowden’s disease(CD)은 드문 다발성 과오종-신생물 증후군이다. Lhermitte-Duclos disease(LDD)은 소뇌의 과오종으로 알려져 있다. CD는 LDD나 다른 다발성 전신 신생물을 동반할 수 있다. 저자들이 경험한 다발성 전신 신생물을 동반한 CD-LDD를 보고하고자 한다.

목적: 출혈에 의한 올리브핵의 이차적 퇴행성비대(Hypertrophic olivary degeneration)의 자기공명영상소견은 이미 보고된 바 있으나, 본 연구에서는 다양한 원인과 출혈의 정도에 따라 침범양상의 차이점을 비교분석하고자 하였다. 대상과 방법: 올리브핵의 이차적 퇴행성비대로 진단된 15명의 환자에서 MR영상을 후향적으로 분석하였다. 환자들의 연령분포는 39-66세였으며 남자가 10명, 여자가 5명이었다. MR영상은 1.5T 초전도형 자기공명영상장치에서 두부코일을 사용하여 시행하였다. MR영상상 올리브핵에서 관찰되는 신호강도, 크기의 변화를 선행된 원인과 부위의 침범 정도에 따라 그 소견을 기록하였다. 3명의 환자에서 추적검사가 가능하였다. 결과: 뇌교 또는 중뇌의 중심부위에 큰 출혈을 보였던 3명의 환자에서 양측 올리브핵의 비대가 관찰되었으며, 뇌교에 큰 경색을 보였던 1명에서 3개월후에 양측 올리브핵에서 비대가 관찰되었다. 뇌교 또는 중뇌의 중앙피개로를 침범하는 출

The treatment of intraosseous ateriovenous malformation in the jaw is difficult because of life threatening frequent bleeding tendency. The surgical resection of AVM may be mortal due to massive blood loss .In the growing pediatric patient, surgery may cause facial deformity and growth disturbance. So currently, the treatment of AVM is only embolization using various material through endovascular access, direct-puncture or embolization in conjunction with surgical resection. We report a case of

Intercoronary communication is a rare congenital coronary anomaly. We present a case of a 48-year-old man with an incidentally discovered communication between the right and circumflex coronary arteries, who was admitted with chest tightness and exertional dyspnea. The initial diagnosis was made using electrocardiogramgated multidetector computed tomography.

신경매독이 뇌신경의 침범으로 발현하는 경우는 드물며 급성 매독성 수막염(acute syphilitic meningitis)과 수막혈관성 신경매독(meningovascular neurosyphilis)의 형태에서 주로 발생한다. 저자는 뇌간에서 고무종성 결절을 동반한 매독성 뇌막염이 뇌신경 기시부를 침범하였던 신경매독 두 증례를 경험하여 이를 보고하고자 한다.

Purpose: The frontal lobe is the highest center of importance in the control of micturition. Patients with frontal lobe lesion have detrusor hyperreflexia, detrusor areflexia or uninhibitory urethral relaxation. However, the precise regions controlling the detrusor activity have not been established. Therefore, we analogize the regions of the frontal lobe controlling micturition by means of analyzing the detrusor change of patient with frontal lobe lesion. Materials and Methods: The cystometric

Primary osteosarcoma of the skull is a rare finding. We report here on a pathologically proven case of osteosarcoma that presented as a painless mass in the frontal bone of a 7-year-old boy. This unusual form of osteosarcoma had features of desmoplastic fibroma in a large portion of the tumor. We also include a review of the medical literature related to osteosarcoma.