• Journal of Chest Surgery
• /
• v.51 no.1
• /
• pp.72-75
• /
• 2018

Pericardial cysts are rare benign anomalies generally discovered as incidental findings on radiographic images. Rarely, pericardial cysts cause symptoms and may lead to complications. A 56-year-old woman presented to the emergency department for mild chest pain. A cardiovascular and respiratory examination revealed no abnormalities, while a chest X-ray and subsequent thoracic computed tomography (CT) showed a pericardial cyst. The patient refused both percutaneous treatment and thoracic surgery. Three years later, a thoracic CT scan showed that the pericardial cyst had disappeared. Although the spontaneous resolution of these lesions is rare, this article highlights the possibility of conservative management in select cases.

• Journal of Sasang Constitutional Medicine
• /
• v.14 no.2
• /
• pp.147-152
• /
• 2002

One woman, Sixty three years old, suffered from chest pain, abdominal pain, nausea and vomiting for about three months. Although many examinations, brain magnetic resonance imaging(MRI), chest computed tomography(CT), abdominal CT, gastric endoscope, abdominal ultrasonography, and so forth, was performed from every point of view, those were non-significant. At first, I wrongly diagnosed her case as disease of Soumin and gave Soumin Gwakhyangjeongkisan. But she complained of diarrhea and chest discomfort. I re-diagnosed her case as Soyangin Gyeolhyung and treated with Hyeongbangdojeoksan, herbal medicine, consisted of Rhizoma Rehmanniae(生地黃), Lignum Akebiae(木通), Radix Scrophulariae(玄蔘), Semen Trichosanthis(瓜蔞仁), etc. Three weeks have passed from first visit and she did not suffered from pain. I experienced the excellent effect of Hyeongbangdojeoksan to Soyangin Gyeonlhyung.

• Journal of Chest Surgery
• /
• v.54 no.6
• /
• pp.547-550
• /
• 2021

A 71-year-old male patient visited Yeungnam University Hospital with abnormal chest computed tomography (CT) findings. Chest CT revealed multiple lung nodules and a posterior mediastinal tumor, the diagnosis of which was confirmed surgically. Magnetic resonance imaging (MRI) of the abdomen showed multiple small nodules, which were diagnosed as cavernous hemangioma in the liver based on the pathology results of the mediastinal and lung masses in combination with MRI findings. Cavernous hemangiomas are benign tumors that can occur throughout the body, mainly in the skin and subcutaneous tissue. The liver is the most common internal organ containing hemangiomas, whereas they are very rarely found in the lungs or mediastinum.

• Journal of radiological science and technology
• /
• v.43 no.3
• /
• pp.195-208
• /
• 2020

Artificial intelligence(AI) is a field of computer science that is defined as allowing computers to imitate human intellectual behavior, even though AI's performance is to imitate humans. It is grafted across software-based fields with the advantages of high accuracy and speed of processing that surpasses humans. Indeed, the AI based technology has become a key technology in the medical field that will lead the development of medical image analysis. Therefore, this article introduces and discusses the concept of deep learning-based medical imaging analysis using the principle of algorithms for convolutional neural network(CNN) and back propagation. The research cases application of the AI based medical imaging analysis is used to classify the various disease(such as chest disease, coronary artery disease, and cerebrovascular disease), and the performance estimation comparing between AI based medical imaging classifier and human experts.

• Korean Journal of Radiology
• /
• v.22 no.8
• /
• pp.1416-1435
• /
• 2021

Non-infectious granulomatous lung disease represents a diverse group of disorders characterized by pulmonary opacities associated with granulomatous inflammation, a relatively nonspecific finding commonly encountered by pathologists. Some lesions may present a diagnostic challenge because of nonspecific imaging features; however, recognition of the various imaging manifestations of these disorders in conjunction with patients' clinical history, such as age, symptom onset and duration, immune status, and presence of asthma or cutaneous lesions, is imperative for narrowing the differential diagnosis and determining appropriate management of this rare group of disorders. In this pictorial review, we describe the pathologic findings of various non-infectious granulomatous lung diseases as well as the radiologic features and high-resolution computed tomography imaging features.

• Journal of the Korean Society of Radiology
• /
• v.83 no.1
• /
• pp.212-217
• /
• 2022

An epidermoid cyst is a benign tumor found anywhere in the body. However, the occurrence of epidermoid cysts in the thymus is extremely rare, with only six cases reported worldwide. The correct diagnosis of thymic epidermoid cysts is often difficult due to the unusual location and nonspecific imaging findings. Herein, we present a case of a thymic epidermoid cyst in a 37-year-old female with clinical information and chest CT findings. Further, we have reviewed previous literature reports describing imaging findings of thymic epidermoid cysts.

• Journal of Korean Neurosurgical Society
• /
• v.29 no.2
• /
• pp.274-279
• /
• 2000

A 35-year-old female patient who had been paraplegic since her upper thoracic cord injury one and a half years before was presented with a syringomyelia involving C7 to T2 cord segments on follow-up magnetic resonance imaging(MRI). Her pain on the chest and bilateral axilla worsened since about 2 years after initial injury, and MRI demonstrated a progressively enlarging cystic syrinx cavity of the cervicothoracic cord. The posttraumatic syringomyelia was managed operatively by lysis of the arachnoid adhesions, myelotomy, and expansile duraplasty. Post-operatively her pain was relieved, and MRI showed decrease in size of the syrinx, and digital infrared thermographic imaging(DITI) showed diminution of the hyperthermic area on the anterior chest. In conclusion, the posttraumatic syringomyelia can be managed successfully without shunt operation. It seems apparent that expansile duraplasty is effective in controlling the posttraumatic syrinx.

• Nuclear Engineering and Technology
• /
• v.46 no.2
• /
• pp.255-262
• /
• 2014

During image-guided radiation therapy, the patient is exposed to unwanted radiation from imaging devices built into the medical LINAC. In the present study, the effective dose delivered to a patient from a cone beam computed tomography (CBCT) machine was measured. Absorbed doses in specific organs listed in ICRP Publication 103 were measured with glass dosimeters calibrated with kilovolt (kV) X-rays using a whole body physical phantom for typical radiotherapy sites, including the head and neck, chest, and pelvis. The effective dose per scan for the head and neck, chest, and pelvis were $3.37{\pm}0.29$, $7.36{\pm}0.33$, and $4.09{\pm}0.29$ mSv, respectively. The results highlight the importance of the compensation of treatment dose by managing imaging dose.

• Journal of Korean Neurosurgical Society
• /
• v.60 no.1
• /
• pp.118-124
• /
• 2017

Brain abscess commonly occurs secondary to an adjacent infection (mostly in the middle ear or paranasal sinuses) or due to hematogenous spread from a distant infection or trauma. Pulmonary arteriovenous fistulas (AVFs) are abnormal direct communications between the pulmonary artery and vein. We present two cases of brain abscess associated with asymptomatic pulmonary AVF. A 65-year-old woman was admitted with a headache and cognitive impairment that aggravated 10 days prior. An magnetic resonance (MR) imaging revealed a brain abscess with severe edema in the right frontal lobe. We performed a craniotomy and abscess removal. Bacteriological culture proved negative. Her chest computed tomography (CT) showed multiple AVFs. Therapeutic embolization of multiple pulmonary AVFs was performed and antibiotics were administered for 8 weeks. A 45-year-old woman presented with a 7-day history of progressive left hemiparesis. She had no remarkable past medical history or family history. On admission, blood examination showed a white blood cell count of 6290 cells/uL and a high sensitive C-reactive protein of 2.62 mg/L. CT and MR imaging with MR spectroscopy revealed an enhancing lesion involving the right motor and sensory cortex with marked perilesional edema that suggested a brain abscess. A chest CT revealed a pulmonary AVF in the right upper lung. The pulmonary AVF was obliterated with embolization. There needs to consider pulmonary AVF as an etiology of cerebral abscess when routine investigations fail to detect a source.

• Journal of the Korean Society of Radiology
• /
• v.82 no.3
• /
• pp.562-574
• /
• 2021

MRI has the advantages of having excellent soft-tissue contrast and providing functional information without any harmful ionizing radiation. Although previous technical limitations restricted the use of chest MRI, recent technological advances and expansion of insurance coverage are increasing the demand for chest MRI. Recognizing the need for guidelines on appropriate use of chest MRI in Korean clinical settings, the Korean Society of Radiology has composed a development committee, working committee, and advisory committee to develop Korean chest MRI justification guidelines. Five key questions were selected and recommendations have been made with the evidence-based clinical imaging guideline adaptation methodology. Recommendations are as follows. Chest MRI can be considered in the following circumstances: for patients with incidentally found anterior mediastinal masses to exclude non-neoplastic conditions, for pneumoconiosis patients with lung masses to differentiate progressive massive fibrosis from lung cancer, and when invasion of the chest wall, vertebrae, diaphragm, or major vessels by malignant pleural mesothelioma or non-small cell lung cancer is suspected. Chest MRI without contrast enhancement or with minimal dose low-risk contrast media can be considered for pregnant women with suspected pulmonary embolism. Lastly, chest MRI is recommended for patients with pancoast tumors planned for radical surgery.