physical properties of agricultural products such as volume are the most important parameters influencing grading and packaging systems. they should be measured accurately as they are considered for any good system design. image processing and neural network techniques are both non-destructive and useful methods which are recently used for such purpose. in this study, the images of apples were ...

BACKGROUND The aim of this paper was to evaluate the validity of tumor volume measurement using diffusion-weighted (DW) imaging in cervical cancer. METHODS In this retrospective study, 22 patients, who underwent preoperative 3.0 T MR examinations with DW imaging were evaluated. Tumor volume measurement by oblique axial (short axis to the uterine cervix) T2-weighted imaging was performed by ma...

INTRODUCTION Monitoring of circulating blood volume is important in the management of critically ill patients. Current methods of circulating blood volume measurements such as indicator dilution using radioisotopes or Evans blue dye are unsuitable for clinical application as these tests do not allow for frequent repeated measurements to be done. A direct bedside measurement of circulating blood...

The conductance catheter technique allows realtime measurements of ventricular volume based on changes in the electrical conductance of blood within the ventricular cavity. Conductance volume measurements are corrected with a calibration coefficient, α, in order to improve accuracy. However, conductance volume measurements are also affected by parallel conductance, which may confound calibratio...

BACKGROUND AND PURPOSE In CTP, an arterial input function is used for cerebral blood volume measurement. AIFs are often influenced by partial volume effects resulting in overestimated CBV. A venous output function is manually selected to correct for partial volume. This can introduce variability. Our goal was to develop a CTP protocol that enables AIF selection unaffected by partial volume. M...

Accurate assessment of the swollen limb is crucial to effective management, and usually consists of measurement of volume and assessment of skin condition. Here, we review the different methods available to measure volume, and their accuracy, together with other non-invasive methods available to assess the characteristics of the swelling. These include the measurement of fluid mobility by recor...

Harvey, R. J. (University of California, Davis), and Allen G. Marr. Measurement of size distributions of bacterial cells. J. Bacteriol. 92:805-811. 1966.-Apparatus for the automatic determination of the volume distribution of particles by measurement of the amplitude of pulses generated in a Coulter transducer is described. Distributions of volume estimated by direct measurement of pulse amplit...

yield monitoring is one of the essential steps in the implementation of precision farming. yield maps derived from yield monitoring system, clearly show crop yield variations. research reports on preparing hay and forage yield maps are fewer in number and extent than those on grain crop. in this research, a method was developed for estimating alfalfa hay yield from a map developed for a small s...

A method for quantitative measurement of air volume changes in upper airway is presented in this paper. The aim of this study is to assess the feasibility of a state-of-the-art Cone Beam Computerized Tomography (CBCT) technique for quantitative measurement of volume in upper airway. Our application is defining and tracking minute volume changes (a few milliliters) of upper airways caused by sur...