Dual energy subtraction

KV/MA is dependent on patient thickness and overall normal technique used   low KV 50-70 shows better contrast but will not penetrate the lungs to see further problems   high KV 80-120 will give more penetration but contrast will suffer    So its up to the radiologist to develope the best technigue depending on patient thickness   A PA/AP chest radiograph exam is performed with the acquisition of 2 images at different energy levels less than 200 milliseconds apart and the application generates three views: a standard radiograph, a soft tissue image with the bones “subtracted,” and an image of the bones and any additional calcified structures.  Dual Energy separates bone tissue and soft tissue, allowing radiologists to view these entities in separate radiographic images. By doing so, Dual Energy eliminates obstruction from overlying bones and provides more information on calcification content.   Im not a radiologist but i did sleep at a holiday inn.....