BACKGROUND Most cancers show abnormal DNA methylation and a positive correlation between hypomethylation and tumour progression. PATIENTS AND METHODS In our laboratory the extent of DNA methylation in individual nuclei in normal, cancer and non-cancer thyroid tissue samples was quantified according to a previously described method of computer-assisted semi-quantitative analysis. Cancer and no...

Objectives: The present study is to evaluate Virtual Touch Tissue Quantification (VTQ) technique in the prevention of submandibular gland damage in patients with Nasopharyngeal Carcinoma (NPC) after Intensity-Modulated Radiation Therapy (IMRT). Material and method: A total of 61 patients diagnosed with NPC were treated with IMRT. All the patients underwent Ultrasonography (US) while submandibul...

PURPOSE To evaluate diagnostic value of the virtual touch tissue quantification (VTTQ) for breast lesions with different sizes. MATERIALS AND METHODS Patients with 206 breast lesions were categorized into three groups according to lesion size (<10 mm, 10-20 mm, and >20 mm). Breast lesions were examined by conventional ultrasound and VTTQ, and shear wave velocity (SWV) of each lesion and adjac...

OBJECTIVE To explore the clinical value of virtual touch tissue quantification (VTQ) technique and the PGA index [prothrombin time (P), γ-glutamyl transpeptadase (GG) and apolipoprotein A1 (ApoAl)] in evaluating the degree of liver fibrosis in alcoholic patients.
 METHODS A total of 64 patients with long-term alcohol history were enrolled for this study. The liver ultrasonography elasticity w...

BACKGROUND The aim of the study was to describe the shear wave velocity (SWV) values of the penis by virtual touch tissue quantification (VTTQ) and to examine the clinical usefulness of this procedure in evaluation of the rigidity changes in penile erection. PATIENTS AND METHODS.: VTTQ was performed in 37 healthy volunteers. In the course of erection, SWV values of glans penis, corpus penis an...

The aim of this study was to investigate the diagnostic value of the Virtual Touch™ tissue quantification (VTQ) and elastosonography technologies in benign and malignant breast tumors. Routine preoperative ultrasound, elastosonography and VTQ examinations were performed on 86 patients with breast lesions. The elastosonography score and VTQ speed grouping of each lesion were measured and compare...

In the Museum of Pure Form, we explore a novel way of presenting art to visitors of a museum, allowing them to virtually touch artefacts in a virtual museum. In order to realise this the statues are first digitised with a scanner so that they can be placed in a virtual museum. The virtual museum is then displayed on a 3D stereo screen. The visitor uses a purpose-built two-contact-point haptic d...

We demonstrate a generalizable method for unified multitouch detection and response on various nonparametric and parametric surfaces to support interactive physical–virtual experiences. The method employs multiple infrared (IR) cameras, one or more projectors, IR light sources, and a rear-projection surface. IR light reflected off human fingers is captured by cameras with matched IR pass filter...

Applications in tele-presence, virtual reality and virtual environments have highlighted the need for an advanced realistic user interface to remote and virtual entities. Vision and audition have been well developed leaving touch as a key sensory parameter which is presently under-utilised. In this paper a detailed study of the present knowledge of the human sensory nervous system relating to t...

Multi-touch interaction has received considerable attention in the last few years, in particular for natural two-dimensional (2D) interaction. However, many application areas deal with three-dimensional (3D) data and require intuitive 3D interaction techniques therefore. Indeed, virtual reality (VR) systems provide sophisticated 3D user interface, but then lack efficient 2D interaction, and are...