INTRODUCTION Osteoporosis is an illness characterized by the handicapped endurance of the bones, causing an increased risk of fracture. AIM OF THE STUDY Aim of the study was to establish the level of knowledge about osteoporosis prevention among women screened by bone densitometry and to answer the question whether the level of knowledge is dependent on socio-demographic factors. MATERIAL A...

PURPOSE To evaluate changes in crystalline lens densitometry following corneal cross-linking (CXL) in keratoconic patients. METHODS In a quasi-experimental study, three-dimensional lens densitometry was performed using the Pentacam Scheimpflug camera (Oculus Optikgerate GmbH, Wetzlar, Germany) at baseline and six months after CXL. Densitometry was performed in a fixed area of 2 inch × 1 inch ...

BACKGROUND Studies have indicated that the commonly used osteoporosis prescreening tools are not appropriate for use in every nation. This study was designed to develop and validate a prescreening model for bone mineral densitometry among Iranian postmenopausal women. METHODS From 13613 individuals who were referred for bone mineral densitometry in Shariati hospital in Tehran, 8644 postmenopa...

This article briefly presents the target factors and methods for summarizing evidence employed in a technological evaluation, as well as the underlying logic in their elaboration and utilization in the field of public health. The example is post-menopausal osteoporosis, analyzing the current timeliness of disseminating bone densitometry and technologies to combat osteoporosis in Brazil Availabl...

THE INTERNATIONAL SOCIETY for Clinical Densitometry (ISCD) periodically convenes a Position Development Conference (PDC) for the purpose of making recommendations on quality control, acquisition, analysis, interpretation, and reporting of bone densitometry. Questions regarding relevant topics are assigned to subcommittees for a comprehensive medical literature review and presentation of a repor...

Aim . To improve the methods for assessing state of jaw bone tissue based on use ultrasonic shadow densitometry. Materials and As a research method, there was used latest development – velocimetric densitometer with an original software, sensors electronic positioner. The material experimental study were macropreparations animal species "Domestic Pig", where spongy cortical substance isolated, ...

Methods are described for determining the relative mass of particles in electron microscope specimens through the measurement of photographic densities in recorded images. These methods were applied to a quantitative study of the amounts of electron stains that could be associated with the particles of tomato bushy stunt virus (BSV) and tobacco mosaic virus (TMV). In the pH range above 2 where ...

Osteoporosis (OP) is a frequent complication of rheumatoid arthritis (RA) and longitudinal studies have documented increased rate of bone loss in RA patients. To determine the frequency of low bone mass as well as the influence of disease duration and corticosteroid use on bone mass in patients with RA, 88 patients with RA and 112 age matched controls were studied. Bone densitometry was perform...

Spot density is commonly used as an indication of shower energy in emulsion chambers. In a system originally developed for JACEE analysis, the optical density of a spot on x-ray film is estimated from macroscopic digital images. The spot’s size is used to compensate for the lack of dynamic range obtainable with digital imaging hardware. These densities are compared to manually measured densities.

An efficient technique for calibrating video cameras to record optical density (OD) from microscopic images is described. The method corrects for variation over the field of the brightfield and darkfield intensities, does not assume a linear response of the camera to the incident intensity and requires a single calibration filter.