Dual-Source Computed Tomography System – A New Imaging Technique

Dual-source Computed Tomography System is a medical imaging system that is used for diagnosis and treatment.  The dual-source computed tomography (CT) system is used to image patients with high or irregular heart rates, or even arrhythmia, without the requirement for beta-blockers to slow the cardiac rhythm. This latest CT innovation allows physicians to better differentiate, characterize, isolate and distinguish bone, soft tissue and fluid. This advanced technique enables faster and earlier diagnosis in acute care patients while maintaining an optimum image quality, independent of patient size and condition. The dual-source computed tomography system also enables physicians to better identify and characterize plaque.

The key difference between traditional CT and dual-source CT technology is that the latter uses two X-ray sources and two detectors at the same time. With 0.33 seconds per rotation, electrocardiogram-synchronized imaging is possible with 83-millisecond temporal resolution, independent of the heart rate, resulting in motion-free cardiac images. Furthermore, the system is capable of imaging full cardiac detail with as much as 50 per cent less radiation exposure compared to age old traditional CT scans.

The dual-source CT features a 31-inch bore opening and a 79-inch scan range, which will ensure patient comfort and access and allow physicians to image more parts of the body in a short span of time.

Dual-source Computed Tomography System allows higher temporal resolution by acquiring a full CT slice in only half a rotation, thereby reducing motion blurring at high heart rates and potentially allowing for shorter breath-hold time. This technique is especially useful for ill patients who have difficulty holding their breath or who are not able to take heart-rate lowering medication.

This new concept was introduced in 2005. Better the image quality, easier it is for the doctors to make a diagnosis.

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