Low-complexity high-performance multiscale error diffusion technique for digital halftoning

Version of RecordPublishe

An adaptive palette reordering method for compressing color-indexed image

Center for Multimedia Signal Processing, Department of Electronic and Information EngineeringRefereed conference paper2006-2007 > Academic research: refereed > Refereed conference paperVersion of RecordPublishe

Reducing the complexity of multiscale error diffusion

2006-2007 > Academic research: refereed > Refereed conference paperVersion of RecordPublishe

A low-complexity multiscale error diffusion algorithm for digital halftoning

Centre for Multimedia Signal Processing, Department of Electronic and Information EngineeringRefereed conference paper2005-2006 > Academic research: refereed > Refereed conference paperVersion of RecordPublishe

Intraoperative direct embolization with N-butyl cyanoacrylate (NBCA) for vascular tumours of the spinal cord: a technical report

Oral-Poster Presentation 1Meeting Theme: Degenerative Lumbar SpineINTRODUCTION: Intramedullary vascular tumors such as hemangioma or hemangioblastoma in the cervical cord are challenging lesions to remove surgically. The vascularity of the lesion can cause significant bleeding and difficulties during tumor debulking and dissection, and increase the risk of spinal cord damage. Pre-operative endovascular embolization is well described for intra-cranial lesions, but seldom used in intraspinal intramedullary tumors due to the technical difficulties and risk of spinal cord ischemia. We describe our experience of intra-operative direct embolization of difficult cervical cord vascular tumors with N-butyl cyanoacrylate (NBCA) glue in achieving prompt hemostasis and facilitating tumor removal …published_or_final_versio

Sequential approaches for resection of clival chordoma

Free Paper 7Conference Theme: Degenerative Lumbar SpineINTRODUCTION: Chordomas are extra-axial tumours that originate from the primitive notochord. They are rare diseases that present mostly between the third and the fifth decades of life with an incidence rate of 0.08 per 100,000 in the United States. Approximately 35% of chordomas arise in the clivus of the skull base (clival chordoma). In spite of their slow-growing and non-malignant histopathological appearance, they are potentially life threatening due to their locally destructive and invasive nature. Clival chordomas are located near the spheno-occipital junction at the base of the skull, behind the sphenoid sinuses. Involvement of the surrounding cranial nerves accounts for their symptomatology. It is notorious for its high tendency of recurrence following treatment, with a reported recurrence rate of 68%. Therefore, gross total resection in combination with adjuvant radiotherapy is the standard mode of treatment …published_or_final_versio

Dorsal root entry zone approach in spinal intramedullary tumours: a revisit and review of the technique

Meeting Theme: Degenerative Lumbar SpineOral-Poster Presentation IINTRODUCTION: Surgical excision is the mainstay treatment for the intramedullary spinal cord tumour. However, when no tumour exposed on the surface of the spinal cord in this kind of tumour, myelotomy is required. Median myelotomy (MM) is the standard approach to be described in the literatures, but we did encounter complications probably related to this approach solely. After such incidents, we adopted the dorsal root entry zone myelotomy (DREZM) approach in the surgery treating these intramedullary tumours …published_or_final_versio

Oral health status of asthmatic preschoolers in Hong Kong

published_or_final_versio

Magnetic properties of Mn doped ZnO tetrapod structures

Author name used in this publication: C. Surya2003-2004 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Moyamoya disease: 14-year experience in a single institution in Hong Kong

Conference Theme: Degenerative Lumbar SpineOral-Poster Presentation 1OBJECTIVE: To review the presentation and treatment outcome after intervention for patients with Moyamoya disease in the past 14 years. METHODS: All 43 hospitalized patients with Moyamoya disease admitted from 2001 to 2014 in our centre were included in this retrospective study. Disease presentation, initial radiological findings, operative details, clinical and imaging follow-up data were reviewed …published_or_final_versio