In this report we describe twenty-two cases of intracranial tumors studied with an MR imager operating at a field strength of 0.064 T for evaluation of the clinical utility of low tesla MRI. The comfirmed diagnoses were meningioma(9 cases), astrocytoma(4 cases), glioblastoma multiforme(1 case), craniopharyngioma(2 cases), intracranial metastasis(1 case). pituitary microadenoma (1 case), hemangioblastoma (1 case), and trigerminal neurilemmoma(1 case). Meningiomas appeared as well-marginated, homogenous signal intensity masses(67%) in most cases. Most meningiomas showed iso-signal intensity(78%) on T1-weighted images, and high signal intensity on T2-weighted images. After Gd-DTPA enhancement, diffuse homogeneous contrast enhancement(75%) was well see. The multiple hemorrhagic foci within the glioblastoma multiforme were identified, which shoed high signal intensity on T1-weighted images and low signal intensity on T2-weighted images(intracellular methemoglobin), or high signal intensity on both T1 and T2-weighted images(extracellular methemoglobin). One case of cerebellar hemangioblastoma was a well-defined cystic mass with contrast enhanced mural nodule but no identification of characteristic signal void vessels. The remianing tumors showed low signal intensity on T1-weighted images, and high signal intensity on T2-weighted images. Gd-DTPA enhancement was helpful in separating the lesion from the surrounding edema or normal tissue, but had limited diagnostic value in characterizing the nature of the mass. The advantages of low tesla MRI are as follows on requirement of cooling water or electricity, open design, shorter T1 relaxation time compared with high tesla unit that increases the difference of T1-relaxation time between tissues, ease of installation, and cost effectiveness. In conclusion, the low tesla MRI is useful for the detection and evaluation of the brain tumors.
Brain Neoplasms ; Cost-Benefit Analysis ; Diagnosis ; Edema ; Electricity ; Gadolinium DTPA ; Glioblastoma ; Hemangioblastoma ; Magnetic Resonance Imaging ; Meningioma ; Relaxation ; Water

PURPOSE: This study is for the evaluation of low tesla(0.064T) MR imaging diagnostic accuracy in the internal derangement of the knee. MATERIALS AND METHODS: We retrospectively analysed the MR images of 36 injured knees of 35 patients. The presence of tear was determined by arthroscopy or surgery in all cases. RESULTS: The sensitivity, specificity, accuracy, positive predictive value, negative predictive value of low tesla MRI for the diagnosis of anterior cruciate ligament injury were 83%, 88%, 86%, 77%, 91%, for the posterior cruciate ligament 75%, 95%, 86%, 92%, 83%, for the medial collateral ligament 83%, 96%, 92%, 91%, 92%, for the lateral collateral ligament 67%, 97%, 94%, 67%, 97%, for the menisci 75%, 93%, 89%, 75%, 93%. CONCLUSION: The low tesla MRI is an accurate method in detection and evaluation of the internal derangement of the knee.
Anterior Cruciate Ligament ; Arthroscopy ; Collateral Ligaments ; Diagnosis ; Humans ; Knee* ; Lateral Ligament, Ankle ; Magnetic Resonance Imaging* ; Posterior Cruciate Ligament ; Retrospective Studies ; Sensitivity and Specificity

No abstract available.
Tonsillectomy*

No abstract available.
Lithotripsy* ; Salivary Gland Calculi* ; Salivary Glands* ; Shock*

PURPOSE: Although many useful articles appear in the journals published in Korea, they are not always cited by researchers mainly due to absence of efficient searching system. The authors made a program with 6 predefined filtering forms to detect published articles rapidly and accurately. MATERIALS: The program was coded using database management system CA-Clipper Version 5.2 (Computer Associates International, Inc.) through preliminary work for 1 year. We used 486 DX II (8 Mbyte RAM, VGA, 200 MByte Hard Disk), Ink-jet Printer (Hewlett Packard Company), and MS-DOS Version 5.0 (Microsoft Co.). We inputed total of 1986 articles published in the Journal of the Korean Radiological Society from 1981 to 1993. METHODS AND RESULTS: The searching time was 10 to 15 seconds for each use. We had very flexible user interfaces and simplified searching methods, but more complicated filterings could also be performed. CONCLUSION: Although the previous version have had some bugs, this upgrade version resolved the problems and fitted in searching articles. The program would be valuable for radiologist in searching articles published not only in the Journal of the Korean Radiological Society, but also in the Journal of the Korean Society of Medical Ultrasound and the Korean Journal of Nuclear Medicine.
Database Management Systems ; Humans ; Korea ; Microcomputers* ; Nuclear Medicine ; Ultrasonography

No abstract available.
Epinephrine* ; Injections, Subcutaneous* ; Lidocaine* ; Ophthalmic Artery*

PURPOSE: The purpose of this paper is to discuss the characteristic CT and MR findings in persistent hyperplastic primary vitreous(PHPV) and to compare the detectability of those findings in each modality. MATERIALS AND METHODS: We retrospectively evaluated CT and MR findings in 32 patients with PHPV. Twenty-five patients had CT, 13 patients had MR, and 6 patients had both CT and MR. RESULTS: Major findings of PHPV in 32 patients on both imaging modalities were lens deformity(78%), shallow anterior chamber(72%), heterogeneous vitreous opacity(72%), enhancing hyaloid artery or remnant of fibrotic hand(69%), and microophthalmos(67%). Minor findings were retinal detachment(22%), and vitreous hemorrhage(6%). In MRI, lens deformity(92%) and shallow anterior chamber(85%) were detected most commonly whereas in CT, opaque vitreous(80%) was the most common finding. Findings of enhancing hyaloid vessel or remnant of fibrotic band, considered characteristic of PHPV, were more commonly detectable in MR (85%) than CT(52%). CONCLUSION: Characteristic MR and CT findings of PHPV were lena deformity, shallow anterior chanber, heterogeneons vitreons opacity, enhanciny hgalind artery or remnant fibrotic band, and microphthalmos. MR seemed to be more useful than CT in detecting Globe pathology.
Arteries ; Congenital Abnormalities ; Humans ; Magnetic Resonance Imaging ; Microphthalmos ; Pathology ; Retinaldehyde ; Retrospective Studies

No abstract available.

Pulmonary Aspergillomas usually arise from proliferation of Aspergillus in preexisting parenchymal cavities.202 college students (99 men, 103 women) aged 18% 26 years. Fasting blood samples were. The most common symptom in this disorder is hemoptysis, which may be minimal in amount or it may be massive & life threatening. The optimum therapy for pulmonary aspergilloma is controversial. The major options available include surgical resection of the lesion, a number of medical therapies, or simple observation of the patient for a time. Surgery is the most effective treatment but it is limited to some patient because most patients haute underlying pulmonary disease. Thus the various form of medical therapy was available with successful result. The authors present a case of percutaneous intracavitary amphoterician B injection for the treatment of pulmonary aspergilloma & its successful effect for the repetitive hemoptysis.
Amphotericin B* ; Aspergillus ; Fasting ; Hemoptysis* ; Humans ; Lung Diseases ; Male

Continuous epidural analgesia with morphine via portable infusor(Baxter Infusor, BI) is a good technique for the management of intractable cancer pain. The method of subcutaneous tunnelling with portable infusor has been widely used for the cancer pain management. We examined the doses of morphine, duration of subcutaneous tunnelling, side effects, age distribution and causes of pain. The mean initial dose of morphine was 6.09 and the last 24.02 mg. Mean duration of subcutaneous tunnelling was 53.71 days and voiding difficulty, pruritus, respiratory depression were observed. Most of the patients were at the ages of 6th decade and the most common cause of pain was stomach cancer. It is suggested that the management of intractable cancer pain with epidural morphine through subcutaneous tunnelling via portable infusor is satisfactory and reliable.
Age Distribution ; Analgesia, Epidural ; Humans ; Infusion Pumps* ; Morphine ; Pain Management ; Pruritus ; Respiratory Insufficiency ; Stomach Neoplasms