Meningioma associated with contralateral chronic subdural haematoma: a short report.
(25/309)
Two unusual cases of meningiomas associated with opposite chronic subdural haematoma are presented. (+info)
Delayed, transient neurological deterioration after mild head injury--case report.
(26/309)
A 16-year-old boy presented with delayed, transient neurological deterioration 18 days after mild head injury. Left hemiparesis and left homonymous hemianopsia appeared after right frontal contusional and mild subdural hematomas subsided. Neuroimaging examinations including cerebral angiography, magnetic resonance imaging, and single photon emission computed tomography showed vasodilation and hyperemia in the right cerebral hemisphere. The present case is not typical of acute "juvenile head trauma syndrome," but may represent a possible pathophysiology of the delayed type of transient neurological deterioration after mild head injury. (+info)
Detection of intracranial hemorrhage: comparison between gradient-echo images and b(0) images obtained from diffusion-weighted echo-planar sequences.
(27/309)
BACKGROUND AND PURPOSE: Diffusion-weighted MR imaging (DWI) is commonly used as the initial and sole imaging examination for the detection of acute cerebral infarction, yet it remains controversial whether MR can detect hyperacute (<24 h) hemorrhage. Hemorrhage is best detected with gradient-echo (GRE) T2*-weighted sequences, because of their magnetic susceptibility effects. DWI uses a spin-echo echo-planar technique (EPI) that is more sensitive than spin-echo T2-weighted imaging to susceptibility effects. Our aim was to determine whether the b(0) image from the DWI-EPI sequence is as sensitive as GRE in detecting hemorrhagic lesions on imaging studies performed to identify acute infarction or hemorrhage. METHODS: All MR studies performed for clinically suspected or radiographically confirmed acute infarction or hemorrhage from 2/1/98 to 8/15/99 were retrospectively interpreted by one neuroradiologist in a blinded fashion. The sensitivity of hemorrhage detection, conspicuity of lesions, and diagnostic certainty were compared between the b(0) EPI and GRE sequences. RESULTS: We found 101 acute infarcts, of which 13 were hemorrhagic, as evidenced by the presence of hypointensity within the infarction on the GRE sequence. This finding served as the reference standard for detection of hemorrhage. Hemorrhage was diagnosed with confidence in only seven cases (54%) on b(0) images; 22 acute hematomas were hypointense on GRE images whereas 19 were hypointense on b(0) images (86%); 17 chronic hematomas were depicted on GRE images and 12 on b(0) scans (63%). Punctate hemorrhages and linear cortical staining were detected on 37 GRE studies but on only four b(0) studies. Hemorrhage was always more conspicuous on the GRE sequences. CONCLUSION: b(0) images from a DWI sequence failed to detect minimally hemorrhagic infarctions and small chronic hemorrhages associated with microangiopathy. GRE scans were more sensitive than b(0) images in the detection of these hemorrhages and should be included in emergency brain MR studies for acute infarction, especially when thrombolytic therapy is contemplated. (+info)
Clinical course and prognosis of acute post-traumatic coma.
(28/309)
The clinical course and prognosis of 282 cases of acute post-traumatic coma have been studied. Death occurred in 140 cases (49 percent), and, of survivors, about two-thirds achieved complete social reintegration, while one-third were partially reintegrated or not at all. The quality of survival did not depend only on the nature of the physical sequelae, but also on other factors, particularly social ones. With regard to early prognosis, the authors believe it is possible to predict the final outcome of the patient by using the indices of age, level of coma, and the nature of the intracranial lesions. (+info)
Brain creatine kinase in blood after acute brain injury.
(29/309)
Severe cold injury of the brain increased significantly both total creatine kinase and the corresponding brain isoenzyme (CKBB) activity in confluens sinuum samples. CKBB could be detected also in peripheral blood a few hours after severe brain injury in eight of 12 patients. Finding of CKBB in human plasma may prove a useful indicator of severe brain injury. (+info)
Abnormal brain scans: Contribution of blood radioactivity to image.
(30/309)
Images obtained with 99m-Tc-labeled red blood cells were compared with 99m-Tc-pertechnetate scans in 26 patients with primary and secondary brain tumors, intracerebral infcts, and hemorrhage. The results indicated that the contribution of blood pool radioactivity to a positive brain scan was minor. (+info)
Cranial computed tomography in infants and children.
(31/309)
Cranial computed tomography has been performed in adults for the past 2 years but relatively few children have undergone this procedure. The specific uses in children are in detecting intracranial mass lesions and identifying the character of the lesion, and evaluating congenital cranial diseases such as cerebral dysplasia, tuberous sclerosis and leukodystrophies. This safe, rapid, noninvasive technique will soon replace or supplement standard neuroradiologic techniques in infants and children. (+info)
Cranial subdural haematoma after spinal anaesthesia.
(32/309)
Intracranial subdural haematoma is an exceptionally rare complication of spinal anaesthesia. A 20-yr-old male underwent appendicectomy under partial spinal and subsequent general anaesthesia. A week later, he presented with severe headache and vomiting not responding to bed rest and analgesia. Magnetic resonance imaging showed a small acute subdural haematoma in the right temporo-occipital region. The patient improved without surgical decompression. The pathogenesis of headache and subdural haematoma formation after dural puncture is discussed and the literature briefly reviewed. Severe and prolonged post-dural puncture headache should be regarded as a warning sign of an intracranial complication. (+info)