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Archive for tag: computed tomography

4D CT Scanner


15 May, 2013 | CT Scanner

The four dimensional computed tomography scanner (4D CT Scanner), is the next generation in medical imaging. It is faster and more accurate than traditional CT. With the 4D CT Scanner, in addition to obtaining a 3D image of the body, also the movement is recorded. The movement is registered throughout the breathing cycle, capturing the location [...]

CT Scanner Gantry Informational Guidelines


22 May, 2011 | CT Scanner

CT Scanner Gantry Basic Components The largest component of a CT scanner system is referred to as the scan or imaging system. The imaging system primarily includes the CT scanner gantry and patient table or couch. The CT scanner gantry is a moveable frame that contains the x-ray tube, including: collimators and filters, detectors, data [...]

CT Scanner X-Ray Tubes Clarified


15 May, 2011 | CT Scanner Parts

Improved Technologies Lead to Challenging Tasks for CT Scanner X-Ray Tubes. The most current CT scanning techniques place a high heat load on the CT scanner x-ray tube, due to the need for high tube current values to provide enough photons in the image, when scanning with fast rotations and fine slices. Increasing rates of [...]

The Evolution of CT Scanner Detectors


11 May, 2011 | CT Scanner

CT scanners are designed for imaging of the internal structures of the body. They provide detailed anatomical information by utilizing the principle that different types of tissue structures scanned are displayed in the image as different shades of grey. Intravenous or oral contrast media may be used to further enhance differentiation between tissues. The basic [...]

What to Take into Consideration When Buying a CT Scanner


9 January, 2011 | CT Scanner

Technical specifications of available CT scanners are often quite extensive. Although it is helpful to review these for each CT scanner component, this may not reflect the relative clinical performance of the systems. It is also important to recognize that the performance in practice depends on the trade-off between image quality and radiation dose. The [...]

Coronary Computed Tomography Angiography: General Considerations


22 August, 2010 | CT Scanner

Coronary computed tomography (CCTA) is currently considered to be a technique for high-resolution computed tomography (CT) imaging of the heart. It has become generally accepted that patients with negative CT cardiac results will not need to undergo cardiac catheterization. The radiation dose for the CCTA with modern techniques is much lower than even a few [...]