نتایج جستجو برای: ct number homogeneity acrylic
تعداد نتایج: 1317195 فیلتر نتایج به سال:
Full-Mouth Implant-supported Rehabilitation with a Flapless Surgical Technique: A Treatment Approach
Successful implant treatment includes osseointegration as well as prosthetically optimal positions of the implants for esthetics and function. Computer-assisted oral implant surgery offers several advantages over the traditional approach. The purpose of this report was to evaluate a complex case of a 28-year-old female patient who lost all her teeth as a result of a aggressive periodontal disea...
background: palliative whole brain radiotherapy (wbrt) has been the standard treatment for brain metastases. ionizing radiation is known to be one of the most potent cataractogenic agents. we aimed to evaluate two different radiotherapy techniques with respect to the doses received by the organs at risk (oar) in patients with brain metastasis who undergone wbrt. materials and methods: ten conse...
A plain abdominal radiograph ( fig. 1 ) showed no features of bowel obstruction and a possible foreign body in the right iliac fossa. A computer tomography (CT) scan ( fig. 2, 3 ), performed to rule out a caecal lesion, showed features of appendicitis and confirmed a foreign body in the appendix lumen. A 75-year-old man presented with a 3-day history of worsening right iliac fossa pain. He had ...
Computed tomography (CT) is a widely used medical imaging modality. By rotating an x-ray tube and an x-ray detector around the patient, a CT scanner is able to measure the x-ray transmission from all directions and form an image of the patient’s interior. CT scanners in clinical use today all use energy-integrating detectors, which measure the total incident energy for each measurement interval...
OBJECTIVE The aim of this study was to evaluate alternative methods for the disinfection of denture-based materials. MATERIAL AND METHODS Two different denture-based materials were included in the study. Before microbial test, the surface roughness of the acrylic resins was evaluated. Then, the specimens were divided into 8 experimental groups (n = 10), according to microorganism considered a...
STATEMENT OF PROBLEM Despite the numerous positive features of acrylic denture base, there are a number of undeniable associated disadvantages. The properties of denture base have been improved through various interventions including application of different types of filler and coatings. OBJECTIVES This study aimed to evaluate the surface roughness, thickness and coating quality of organic-in...
BACKGROUND Given the high prevalence of oral candidiasis and the restricted number of antifungal agents available to control infection, this study investigated the in vitro antifungal activity of alcohol vinegar on Candida spp. and its effect on the physical properties of acrylic resins. METHODS Tests to determine the Minimum Inhibitory Concentration (MIC) and Minimum Fungicidal Concentration...
This study presents medical CT scan image feature analysis, creation of data bank and development of a data mining technique. A dataset of 50 known pancreas digital CT scan images with their clinical diagnosis were composed. All images were subjected for image textual characters (energy, entropy, contrast, homogeneity and correlation), which were statistically calculated in numerical MAT lab en...
Currently, multi-organ segmentation (MOS) in abdominal CT can fail to handle clinical patient population with missing organs due to surgical resection. In order to enable the state-of-the-art MOS for these clinically important cases, we propose (1) automatic missing organ detection (MOD) by testing abnormality of post-surgical organ motion and organ-specific intensity homogeneity, and (2) atlas...
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