X-Ray/CT
X-Ray is the most common diagnostic imaging modality performed and is the second most commonly used diagnostic test after laboratory analyses.

X-Ray imaging consists in producing images of body tissues, organs, bones and vessels by exposing a photographic film or other image receptor to X-Ray ionizing radiation. Absorption of X-Ray energy by tissues is dependent on their density. The high density of bones causes higher absorption/attenuation so the image appears whiter compared to soft tissue where the attenuation is lower and the resulting image is darker.

Difference between tissues or organs may be enhanced by the use of contrast agents containing elements of a high atomic number, such as iodine. Contrast agents temporarily increase the density of the tissues or the organs in which they distribute and are routinely used in an increasing range of clinical applications. The latter include CT, interventional techniques such as peripheral and coronary angiography, fluoroscopy and neuro imaging. CT technology in particular is experiencing cutting-edge innovations.

If you are a Healthcare Professional, please click here to select your country of residence to learn more about our Product & Solution offerings for your area.
Last Update: November 2, 2008