Imaging methods computed tomography

The classical computer tomography (CT), including the medical one, has already been demonstrated its efficiency in many practical applications. At the same time, the request of the all-round survey of the object, which is usually unattainable, makes it important to find alternative approaches with less rigid restrictions to the number of projections and accessible views for observation. In the last time, it was understood that one effective way to withstand the extreme lack of data is to introduce a priori knowledge based upon classical inverse theory (including Maximum Entropy Method (MEM)) of the solution of ill-posed problems [1-6]. As shown in [6] for objects with binary structure, the necessary number of projections to get the quality of image restoration compared to that of CT using multistep reconstruction (MSR) method did not exceed seven and eould be reduced even further. 

Computed tomography (CT) scan A series of x-ray scans taken from different angles and then compiled by computer to show a cross-section of a body part of interest a method of body imaging that uses x-ray technology to create cross-sectional images of a person s body. 

Chemimage Corporation, Method for Raman computer tomography imaging spectroscopy. Inventors J.S. Maier and P.J. Treado. 9 pp. (incl. 5 fig.). Appl. 20 Jan 2006. Int. Cl. GOIJ 3/44 GOIN 21/65. US Patent Application... 

Since the early 2000s, noninvasive techniques such as micro-computed tomography (micro-CT) have been increasingly employed to aid in the simultaneous visualization of skeletal and soft tissues. Additionally, the ability to digitize images for mathematical analysis of data sets has progressed to the point where it appears likely that standard methods for visualization and evaluation are about to change. 

The sensitivity and specificity of plain film and contrast study in acute pancreatitis are low. Therefore, they are mostly used to demonstrate complications of AP. Percutaneous sonography is usually the imaging method of choice in patients with acute abdominal distress due to its wide availability, but in the case of AP the distended intestine often impairs adequate visualization of the pancreas. Still, sonography may be used as an excellent imaging modality for short-term follow-up studies, particularly in extremely ill patients who are unable to undergo computed tomography (CT). 

---