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We propose a new statistical method to design spatial filters to recognize and to discriminate between various textures. Unlike existing correlation filters, the proposed filters are not meant to recognize specific shapes or objects. Rather, they discriminate between textures such as terrains, background surfaces, and random image fields. The filters do not(More)
BACKGROUND Extraventricular neurocytoma is a well-established entity, and non-classical sites like the cerebellum and spinal cord have occasionally been reported. CASE We report a rare case of intramedullary neurocytoma in an 8-year-old boy who presented with paraparesis and urinary incontinence. This tumour was isointense on T1-weighted image and(More)
Penetrating head injuries in children constitute only a small part of the total number of traumatic head injuries seen in casualty. A number of household articles have been described to cause penetrating injuries, apart from gunshot and pellet injuries. We describe, for the first time, an unusual case of penetrating injury due to the rotor blade of pedestal(More)
BACKGROUND Endoscopic third ventriculostomy (ETV) has replaced shunt surgery for several indications. Failure of ETV secondary to restenosis can result in recurrence of symptoms of raised intracranial pressure. OBJECTIVE To analyze the rates of restenosis due to ostomy closure and factors resulting in failures and to assess the role of re-ETV in such(More)
Meningomyelocoele (MMC) forms one of the commonest forms of neural tube defect (NTD). It commonly affects lumbosacral area. Double or triple MMC has been reported at various sites of the spine. This supports multiple site closure of neural tube. We report a case of double MMC located at back of head, adjacent to each other like twin MMC. To our best(More)
Meninigo-encepahlocoele (MEC) is a common neurosurgical operation. The size of MEC may vary which has bearing with its management. The association of MEC with micrognathia and microcephaly is rarely reported. The association poses special problem for intubation and maintenance of anaesthesia. Giant MEC may lead to significant CSF loss resulting in(More)
Pituitary tumour have a wide way of presentation. Epistaxis due to pituitary adenoma has been rarely reported. There is no report of bleeding from nose as clinical first presentation in a child. We report the first case in literature where a child had epistaxis for eight months before deterioration of vision. He was found to be having a invasive(More)
An approach to computing pixel-by-pixel gradients of optical phase directly from digitally encoded Fourier-transform or phase-stepped fringe patterns is described. This approach can be classified as a phase unwrapping but is really a sine-cosine demodulation technique that finds its roots in the differential cross-multiplier phase-demodulation technique(More)
Lateral intraventricular tumors are uncommon. They grow linearly rather than exponentially and hence are slow-growing lesions without causing mass effects and hydrocephalus. We report a rare case of large bulky right intraventricular epidermoid tumor in a child. This tumor was associated with mass effect on the surrounding structures and hydrocephalus.