Computed Tomography (CT) has proven itself as a powerful technique for analysing the internal structure of cultural heritage objects. The process followed by conservators and technical art historians investigating an object is explorative: each time new question asked based on outcome previous investigation. This workflow however conflicts with static nature CT imaging, where planning, executio...

The development and performance of a system for x-ray cone-beam computed tomography (CBCT) using an indirect-detection flat-panel imager (FPI) is presented. Developed as a bench-top prototype for initial investigation of FPI-based CBCT for bone and soft-tissue localization in radiotherapy, the system provides fully three-dimensional volumetric image data from projections acquired during a singl...

Medical imaging is the technique and process used to create images of the human body for clinical purposes and diagnosis. Medical imaging is often perceived to designate the set of techniques that noninvasively produce images of the internal aspect of the body. The x-ray computed tomographic (CT) scanner has made it possible to detect the presence of lesions of very low contrast. The noise in t...

The objective of this study was to compare the volume three-dimensional (3D) models generated by different scanners and computational modeling protocols. Eight dry mandibles were scanned five computed tomography (CT) a 3D-scanner. Three-dimensional generated, received surface treatment processes, final 3D compared. results show that there no significant difference among CT techniques, however, ...

From the time CT-scanning was introduced in oil and gas industry, its use could be divided into SCAL routine type applications. The first involves flowing fluids through cores, whereas second scanning, mainly whole their native (preserved or unpreserved) state. For core CT-scanning, there has been a constant shift from qualitative to quantitative analysis. size of cores is ideal for scanning th...

We present a method to merge two distinct CT scans acquired from different patients such that the second scan can supplement the first when it is missing necessary supporting anatomy. The aim is to provide vascular intervention simulations with full body anatomy. Often, patient CT scans are confined to a localised region so that the patient is not exposed to more radiation than necessary and to...

Computed tomography (CT) images contribute to high-quality medical diagnosis, but radiation dose can be quite high, requiring accurate assessment. CT index (CTDI) was developed for dosimetric purposes, scanners operated exclusively in axial mode. Nowadays, CTDI underestimate patient helical exams. AAPM report TG111 (2010) suggested a new metric which the patient's is obtained from profiles cons...

this article is intended to provide an overview of various aspects of clinical pet/ct. these include discussions of: (i) important areas of clinical application; (ii) opportunities in clinical research; (iii) scanner and operating-mode considerations (e.g. bgo vs. lso, lyso or gso scanners, 2d vs. 3d imaging). (iv) study-specific considerations (e.g. patient preparation and positioning issues, ...

Computerized tomography (CT) has been used for decades by medical professionals to detect and diagnose injuries ailments. CT scanners are based on interesting physics, but due their bulk, cost, safety, hands experience with a scanner unrealistic undergraduate students. Therefore, operationally similar, yet small, safe, inexpensive desirable teaching tools. This project details the development o...