This paper is to develop a segmentation system in order to assist the surgeons for the treatment of certain illness such as lung cancer, and tumours.Lung cancer is one of the most frequently occurring cancer and it has a very low survival .Computer Aided Diagnosis (CAD) helps reducing the burden of radiation and improving the accuracy of abnormality detection during CT image interpretation. The...

In neurosurgery, opening a brain fissure allows an operator to access to the basis cranii and to treat a disease part safely, but the operator is required highly sophisticated techniques. In order to develop a neurosurgery simulator enabling surgeons to train themselves for opening a brain fissure procedure, it is required to detect collision between a thin instrument model and a deformable bra...

OBJECTIVE The aim of this study was to evaluate the retention of different pit and fissure sealants on the first permanent molars over a period of one year . MATERIALS AND METHODS In this study, a total of 40 children with all first permanent molars erupted received four different pit and fissure sealants. The children were evaluated at 6 and 12 months. RESULTS The data was subjected to Chi...

Objectives: The aim of this study was to compare in vitro penetration and adaptation of light curing ormocer based fissure sealant and non­filled low viscosity sealant material. Materials and Methods: Extracted human molars (n = 108) were randomly assigned to 2 groups. Admira Seal and Teethmate F­1 were used as sealant materials in the study. Each tooth was sectioned using an Isomet cutter into...

We present a fully automatic lung lobe segmentation algorithm that is effective in high resolution computed tomography (CT) datasets in the presence of confounding factors such as incomplete fissures (anatomical structures indicating lobe boundaries), advanced disease states, high body mass index (BMI), and low-dose scanning protocols. In contrast to other algorithms that leverage segmentations...

Traditionally, testing for whether pit-and-fissure caries should be restored involved probing with a sharp explorer and evaluating resistance to withdrawal (ie, "stick"). Alternative visual methods of evaluation and classification have been proposed, validated, and accepted formally in the core curriculum on caries management in both Europe and North America. This article examines the resistanc...

Meningiomas arise from arachnoid cap cells and are usually found attached to the dura. Chordoid meningioma which comprises less than 0.5% of all meningiomas is rarely seen without dural attachment and its position in the sylvian fissure is aberrant. Our patient, a 50-yr-old female, was presented to us with headache and sensory seizures. The magnetic resonance imaging of the brain revealed left ...

PURPOSE To quantify the relation between eye and eyelids placement in different positions during downgaze and upgaze in healthy subjects. METHODS The position of the eye and eyelids of 10 healthy individuals was quantified by palpebral fissure image processing with NIH Image software. Upper and lower mid-pupil margin distance was measured in 7 positions: -30, -20, -10, 0, +10, +20 and +30 deg...

Purpose: To evaluate microleakage of pit and fissure sealant after using four different pit and fissure preparation techniques 1) Pumice prophylaxis and acid etching 2) Fissure enameloplasty and acid etching 3) Self etching adhesive system 4) Air abrasion and acid etching. Methods: Eighty exfoliated primary molars with no clinical evidence of caries were randomly divided into 4 groups of 20 eac...

The aim of this study was to compare the shear bond strengths (SBS), failure modes (adhesive, cohesive, or mixed), and marginal microleakage occurrence of conventional resin (CR)-based, glass ionomer (GI)-based, and self-adhesive resin (SAR)-based fissure sealants with or without prior phosphoric acid (PA) etching. Fifty extracted premolars were randomly and equally assigned into five groups -G...