No abstract available.
Meningitis*

No abstract available.
Cerebral Palsy* ; Child* ; Humans

PURPOSE: To evaluate MRI(Magnetic Resonance Imaging) findings of miliary tuberculosis of the brain. MATERIALS AND METHODS: Six patients with miliary tuberculosis of the brain diagnosed by characteristic clinical or laboratory findings were studied with spin echo MRI before and after contrast enhancement. We retrospectively evaluated MRI findings acording to the appearance, distribution, location, and enhancement pattern of the granulomas as well as associated other abnormalities. RESULTS: In six patients, contrast-enhanced MRI of thebrain showed numerous punctate, contrast enhancing lesions scattered throughout the brain. Unenhanced MRI failed to demonstrate small granulomas except a few small foci of high signal intensity on T2-weighted images. The shapes of enhancing granulomas were homogeneous nodular enhancement in 86% of cases and small ring enhancement in 14%.98% of granulomas were smaller than 3-mm and 2% were larger. Although several lesions were located in the basalganglia, thalamus, and brain stem, the majority were located in the subpial and subarachnoid space. There was no significant difference in distribution of granulomas between the supratentorial and the infratentorial areas. Other associated abnormalities were focal meningitis in five cases and focal cerebritis in one. On chest radiograph, all patients had miliary tuberculosis in the lungs. CONCLUSION: Contrast-enhanced T1-weighted MRimaging showed numerous round, very small enhancing lesions scattered throughout the brain. The majority of lesions were located in the subpial and subarachnoid space. Contrast-enhanced T1-weighted images are helpful inthe detection and diagnosis of miliary disseminated tuberculous granulomas and meningitis.
Brain Stem ; Brain* ; Diagnosis ; Granuloma ; Humans ; Lung ; Magnetic Resonance Imaging* ; Meningitis ; Subarachnoid Space ; Thalamus ; Tuberculosis, Central Nervous System ; Tuberculosis, Miliary*

No abstract available.
Brain* ; Encephalitis, Herpes Simplex* ; Herpes Simplex* ; Technetium Tc 99m Exametazime* ; Tomography, Emission-Computed, Single-Photon*

No abstract available.
Brain* ; Encephalitis, Herpes Simplex* ; Herpes Simplex* ; Technetium Tc 99m Exametazime* ; Tomography, Emission-Computed, Single-Photon*

No abstract available.
Mucormycosis* ; Technetium Tc 99m Exametazime*

No abstract available.
Kidney* ; Perfusion* ; Radionuclide Imaging*

No abstract available.
Child* ; Humans ; Radioisotope Renography*

PURPOSE: The purpose of this study was to evaluate the utility of two-phase dynamic CT, early and equilibrium pahse, in the preoperative staging of rectal cancers. MATERIALS AND METHODS: We performed incremental dynamic CT after rectal infusion of water in 34 patients with pathologically proved rectal cancers. Two-phase dynamic CT findings were prospectively analyzed and correlated with surgical and histopathologic findings. A total of 150ml of nonionic contrast medium was intravenously administered with a power injector at a flow rate of 5ml/sec for 30 sec, and two-phase images were obtained at 30 sec(early phase) and 2 min (equilibrium phase) after bolus injection. Local tumor staging and regional lymph node were classified by TNM staging. RESULTS: All 34 rectal cancers showed a moderate to marked enhancement in the early phase and a homogeneous and prolonged enhancement of the entire lesion in the equilibrium phase. T-staging of primary tumors were 85.3%(29/34) in early phase and 70.6%(24/34) in equilibrium phase. The accuracy in determining the perirectal fat invasion of rectal cancer was 92%(23/25) in early phase, and 72%(18/25) in equilibrium phase. The sensitivity & specificity of the regional lymph node metastasis were 63.6% and 79.1% in early phase, and 54.5% and 65.2% in equilibrium phase, respectively. CONCLUSION: Early phase dynamic CT was more accurate for the preoperative staging of rectal cancer than that at equilibrium phase.
Humans ; Lymph Nodes ; Neoplasm Metastasis ; Neoplasm Staging ; Prospective Studies ; Rectal Neoplasms* ; Sensitivity and Specificity ; Water

The prognosis of pontine hemorrhage has been reported to be extremely poor, but the wide-spread use of CT scan and MRI has led to the discovery of ssmall pontinehemorrhage which previously could not have been discovered. We analysed 28 cases of pontine hemorrhage for evaluation of contributing factors to the patients prognosis from January 1994 to December 1996. A good prognosis was achieved in patients with no or mild disturbance of consciousness, 20mm or less in the transverse diameter of the hematoma, small numbers of slices in which the hematoma was found, and the hematoma localized in the tegmentum. Two patients underwent suboccipital craniectomy with removal of hematoma. But all patients died immediate postoperative period. A comatose state on admission, transverse diameter of hematoma over 20mm, large numbers of slices in which the hematoma was found, and the hematoma localized in the basotegmentum were significant poor prognostic factors.
Coma ; Consciousness ; Hematoma ; Hemorrhage* ; Humans ; Magnetic Resonance Imaging ; Postoperative Period ; Prognosis* ; Tomography, X-Ray Computed