Introduction: Radiation therapy planning (RTP) is one of the clinical applications in which both CT scan and MRI are used. MR and CT images are applied to determine the target volume and calculation of dose distribution, respectively. In addition, using two imaging modalities increases the department workload and cost. In this study, an algorithm was presented to create synthet...

We introduce an efficient ring artifact correction method for a cone-beam computed tomography (CT). In the first step, we correct the defective pixels whose values are close to zero or saturated in the projection domain. In the second step, we compute the mean value at each detector element along the view angle in the sinogram to obtain the one-dimensional (1D) mean vector, and we then compute ...

Background and Aim X-ray micro computed tomography (micro-CT) is a non-destructive 3D imaging technique that has been applied to plant morphology anatomical studies gain better understanding of physiological phenomena in vivo. It particularly useful for voids undisturbed fragile tissues therefore may be the delicate flowers soft berries Vitis vinifera. The characterisation gas spaces channels c...

OBJECTIVE The objective of this study was to evaluate the relationship between the trabecular bone microarchitecture and cortical bone morphology by using micro-computed tomography (micro-CT) and dental cone-beam computed tomography (dental CT). MATERIALS AND METHODS Sixteen femurs and eight fifth lumbar vertebrae were collected from eight male Sprague Dawley rats. Four trabecular bone microa...

Currently, cone-beam computerized tomography (CT) and micro-CT scanners are under rapid development for major biomedical applications. Half-scan cone-beam image reconstruction algorithms assume only part of a scanning turn, and are advantageous in terms of temporal resolution and image artifacts. While the existing half-scan cone-beam algorithms are in the Feldkamp framework, we have published ...

In the present study, the feasibility of applying high-resolution microtomography (micro-CT) for the detection of lung tumors was investigated in live mice at an early and more advanced stage of tumor development. The chest area of anesthesized mice was scanned by X-ray micro-CT. In mice with a minor and heavy tumor load, micro-CT proved to be a fast and noninvasive imaging device for the detec...

Aims Segmentation of biomedical images is a very wide subject and it is a mandatory step for the analysis and quantification of biomedical features. Any expert of imaging knows that does not exist a single segmentation technique able to segment all kinds of images, therefore the choice of the technique, and its settings, are related to the problem at hand. In high resolution micro-CT images of ...

conclusions modern cts with the innovative technology of a built-in tin filter allow for significant reduction of radiation exposure in patients with suspected urolithiasis by optimizing the x - ray spectrum with image quality as high as in standard ct devices results ct examinations of a total of 143 patients were assessed. dlp of force was 56% and 55% lower in comparison to as+ and flash, (74...