CT Computerized Tomography

Table 5.2 Summary of selected analytical methods for molecular environmental geochemistry. AAS Atomic absorption spectroscopy AFM Atomic force microscopy (also known as SFM) CT Computerized tomography EDS Energy dispersive spectrometry. EELS Electron energy loss spectroscopy EM Electron microscopy EPR Electron paramagnetic resonance (also known as ESR) ESR Electron spin resonance (also known as EPR) EXAFS Extended X-ray absorption fine structure FUR Fourier transform infrared FIR-TEM Fligh-resolution transmission electron microscopy ICP-AES Inductively-coupled plasma atomic emission spectrometry ICP-MS Inductively-coupled plasma mass spectrometry. Reproduced by permission of American Geophysical Union. O Day PA (1999) Molecular environmental geochemistry. Rev Geophysics 37 249-274. Copyright 1999 American Geophysical Union...

On further testing, a specimen of urine showed a normal colour and the patient did not appear to be jaundiced. In addition, a CT (computerized tomography) scan showed that her liver and bile duct were normal, and she had no history of stomach (peptic) ulcers. 

Figure 6 These CT (computerized tomography) scans of the head show a large metastatic cancer of the brain (A) in a patient enrolled in a Pharmacyclics, Inc. sponsored gadolinium(III) texaphyrin (PCI-0120) Phase Ib/II clinical trial. The tumor mass and surrounding edema cause the brain tissue to shift across the midline in (A). After intravenous injection of PCI-0120 (ten treatments) and radiation therapy (ten treatments, total radiation dose of 30 Gy), the tumor is eliminated, leaving some residual edema with the reduction of the shift, as illustrated in (B)...

CT = computerized tomography, VA = vertebral artery, BA = basilar artery. 

Image reconstruction from projections is a basic process in computerized tomography (CT)... 

The resolution of the y-camera is determined by both the collimator and the crystal/photomultipher tube combination. In general, the resolution is significantly poorer than that of other modaUties such as magnetic resonance imaging (mri) and x-ray computerized tomography (ct). For single-photon... 

Figure 3 3D computerized tomography (CT) image of a foamed polysiloxane incorporating a small admixture of carborane cages. 

Computerized tomography (CT) is used in the clinical setting primarily to rule out organic lesions that might underlie or contribute to a psychiatric disorder. Specific indications may include ... 

X-RAY SCAN AND OTHER MEDICAL IMAGERY. Introduction of computerized axial tomography in the form of the X-ray cat scanner (CAT) was a major event in the history of diagnostic medicine. The technology is also referred simply as computerized tomography (CT). 

The acceleration is a direct measure to the dynamic factors. However, there are few reports, if not to say none, about that for meso-scale structures. In a recent attempt, Meng et al. (2009) made use of the multiple sensors of an X-ray computerized tomography (CT) to measure the cluster accelerations. Instead of the conventional use of CT for cross-sectionally scanning the solids distribution, they erected the X-ray fan-beam and the sensors to follow the vertical movement of clusters... 

Computerized Tomography (CT) was used to study mobility control with CO2 foam during tertiary horizontal corefloods at reservoir pressures and temperatures. CO2 foam provided effective mobility control under first-contact miscible conditions. However, mobility control was not observed when the pressure was substantially reduced so -that the oil and CO2 were immiscible. If the beneficial effects of foam can be extended to developed-miscibility conditions, CO2 foam will be an outstanding EOR process. 

There is CT, for computerized tomography, a wedding of x-ray and the computer that scans a portion of, say, the brain by revolving an x-ray tube around the head, converting the pictures into a digital computer code to make high-resolution, three-dimensional video images accurate to. 9 millimeter. Differences in tissue density, between abnormal and normal tissue, are revealed fine details of bone structure appear clearly the location of tumors is pinpointed. 

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