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Ninety patients with subdural empyema were treated in the period after computerized tomography (CT) became available (1979 to 1991). Males predominated by a ratio of 2:1, and 40 patients were between 11 and 20 years old. The site of origin was the paranasal air sinuses in 53 patients, the middle ear in 19, and a superficial infection in eight; the source of(More)
The aim was to evaluate the effect of HTK compared to UW and Euro-Collins (EC) on the initial graft function and long term graft survival in two prospective randomized studies. Only kidneys from heart-beating, kidney-only or kidney + heart donors were eligible for entry. Initial non-function (INF) was defined as the absence of life-sustaining renal(More)
The early diagnosis of cervical vascular trauma is critical in the prevention of cerebral ischemia. Traumatic blunt carotid or vertebral artery dissection is rare and frequently associated with other injuries. Diagnosis is often delayed, limiting treatment options and contributing to a poor outcome. The clinical findings and investigation of 14 patients are(More)
The FCC is contemplating opening up UHF TVWS for cognitive radios - there is a demand for a Cognitive System that can operate on available channels. In this paper we present the system architecture of a prototype Cognitive Radio System using IEEE 802.11a MAC over UHF TVWS. The cognitive radio network consists of a cognitive access point (that performs(More)
OBJECTIVE To determine the prevalence of syringomyelia in a defined population in New Zealand and measure the prevalence of syringomyelia in the three main ethnic groups (Maori, Pacific people and Caucasians/others) living in this region. METHODS A retrospective study of all confirmed cases of syringomyelia diagnosed in residents of northern New Zealand(More)
A 71-year-old woman presented with obstructive hydrocephalus caused by a haemorrhagic pineal mass. A right ventriculo-peritoneal shunt was inserted with successful treatment of the hydrocephalus and resolution of symptoms and signs. Post-operative MRI both as an inpatient and at 5 and 18 months showed no contrast enhancement of the lesion and there was(More)
OBJECTIVE AND IMPORTANCE This is the second report of a Citrobacter-associated brain abscess in an adult and the first report of its association with an intradural tumor. Excluding those associated with trauma, neurosurgical procedures, and proximity to the skull base, only seven other cases of abscesses associated with intracranial tumors have been(More)
A retrospective review of supratentorial, low-grade astrocytomas in adults over a 10-year period (1983-1993) was performed. All 62 patients had computed tomography and surgery with histological and immunohistochemical analysis of the tumour. Radiotherapy was administered to all patients, regardless of the extent of surgical resection. Multivariate analysis(More)