| Popis: |
Ultrasound (US) is an ideal imaging modality used in medical practice: it is portable, has no known bio-effects and produces images with excellent resolution. Despite these advantages, MRI and CT are dominant modalities used for most medical imaging, while accepting much higher cost and health risks. US is acquired with hand held transducers dependent on operator applied pressure and angle plane selection with no fixed acquisition frame. This leads to inter-operator variability — significant image distortion with limited feature accuracy/confidence, especially upon repeat measurement and is the primary reason US is unable to compete with MRI and CT. For example, the standard criteria for determining tumor progression in cancer trials do not permit tumor measurements made with US. |
