ULTRA LEVEL OF DOSAGE REDUCTION
Leading technology in SAFETY
1. Very high data acquisition speed using high speed detectors synchronized with a very fast mechanical shutter-assisted pulsed grid emission system.
2. If you add to that the patient positioning modifications allowed by moving the robotic arms in unusual for the traditional scanning-configurations positions and use of additional personal protection (filters away from the source and near the patient –possible only with robotics) can substantially reduce the dose by up to additional 40%;.
3. Unlimited rotation, horizontal and vertical travel of the two generator-detector couples offers zooming capabilities that allow imaging of small bones/joints (maxillofacial) and large joints (knee) during high speed movement without occlusion.
4. The open bore geometry of the 4DDI scanner allows also unprecedented geometrical configurations of the scanners leading to further reduction of exposure by accurately defining specific regions of interest per application.
4DDI Dosage comparisons
Utilization of BMI charts. Technologists can reduce dose without image degradation by observing the patient’s weight and size. This can be based on the patients’ body habitus, or body Mass index (bMi). some radiologists are suggesting that if a patient’s bMi is less than 30, a lower kVp and mA can be used.
Reducing mA and kVp. With mA, the relationship is directly proportional, meaning if mA is reduced by half, the corresponding dose is reduced by half. if kVp is reduced, the relationship is non-linear (exponentially lower). For example, if you reduce kVp from 120 kVp to 100k Vp (16.5% reductionof kVp) the result is a dose reduction of almost 40%.
The table documents the irradiation-dosage relationships of the major scanning modalities and protocols currently used in medical imaging. View this information with respect to the 4DDI dosage characteristics in the following table.