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Downbeat nystagmus (DBN) is a primary position nystagmus with the fast phase in a downward direction. It is a rare but distinctive disorder of ocular motility and usually localizes the lesion at the posterior fossa. Four patients with DBN were seen in the department. One had a medullary glioma, and another congenital basilar invagination. The other two were… (More)
Acute intermittent porphyria (AIP) presenting as acute confusional state without the classical features of recurrent abdominal pain, constipation, vomiting is uncommon. Such presentation in a young Malay man after a mild upper respiratory tract infection is reported. This is the first case of AIP with psychiatric symptomatology to be reported locally. The… (More)
Cryptococcosis is a systemic fungal disease and meningitis is the most serious complication. The purpose of this study is to define problems related to its diagnosis and treatment. This is a retrospective analysis of 25 patients admitted from January 1978 to December 1981. All patients had cryptococcal neoformans meningitis proven by culture of… (More)
A patient with large cell malignant lymphoma presented with transient left oculomotor nerve synkinesis, left trigeminal and abducens nerve palsies. Magnetic resonance imaging showed thickening of the oculomotor and trigeminal nerves characteristic of central nervous system lymphoma. To our knowledge, this is the first reported case of transient oculomoter… (More)
This paper presents the development of a PC-based microwave five-port reflectometer for the determination of moisture content in oil palm fruits. The reflectometer was designed to measure both the magnitude and phase of the reflection coefficient of any passive microwave device. The stand-alone reflectometer consists of a PC, a microwave source, diode… (More)
This paper presents an improved formulation of the admittance model for open-ended waveguides by including its fringing field effects. The results were compared to both measured and calculated values using finite element method for free space.
Hydrocephalus can cause several neuro-ophthalmological complications but only rarely has it been reported to cause proptosis. A 23-year-old woman developed post-traumatic hydrocephalus after a road traffic accident. She was found to have deteriorating visual acuity bilaterally and bilateral proptosis. Both these complications resolved after a… (More)
This paper presents a new technique of predicting the reflection coefficient of a microwave sensor for oil palm fruits using finite element method (FEM). Comparison results between measured and calculated reflection coefficient were found to be in good agreement with magnitude and phase errors of less than 0.05 and 0.2 radian.