"There are different DECT acquisition technologies available from different vendors. These can be broadly classified as techniques that occur before the patient is scanned (prospective) which need to be pre-selected and those that occur after the patient is scanned (retrospective) which do not need to be pre-selected."
"There are different DECT acquisition technologies available from different vendors. These can be broadly classified as techniques that occur before the patient is scanned (prospective) which need to be pre-selected and those that occur after the patient is scanned (retrospective) which do not need to be pre-selected."
"two helical scans are consecutively acquired at different tube potentials followed by coregistration for post-processing"
"excellent temporal resolution as both datasets were acquired at the same time. The golden rule of dual-energy CT is the need to acquire both sets of images, high- and low-energy, simultaneously; temporal differences could cause "spatial shifts" due to movement, peristalsis, or contrast medium flow 17."
"See also "
"limited field of view (FOV) as both detectors can not be the same size"
"single-source twin-beam "
"dual-layer DECT ("sandwich")"
Expected headings
"Prospective techniques"
"Retrospective techniques"
"See also "
"Each substance owns a unique K-shell binding energy; known as the K-edge. There is a significant spike in attenuation that results just beyond the energy of the K-edge; this peak is unique to every material and holds valuable information about the substance's composition."
"Each substance owns a unique K-shell binding energy; known as the K-edge. There is a significant spike in attenuation that results just beyond the energy of the K-edge; this peak is unique to every material and holds valuable information about the substance's composition."
"The different photoelectric energies and K-edges are the bread and butter of dual-energy CT. Although most elements in the human body have very low K-edges (0.01-0.53 keV), elements like iodine and calcium have higher K-edges of 33.2 keV and 4.0 keV respectively, making them sufficiently larger than surrounding structures; these elements are also particularly important in the clinical setting 1-3."
"excellent temporal resolution as both datasets were acquired at the same time. The golden rule of dual-energy CT is the need to acquire both sets of images, high- and low-energy, simultaneously; temporal differences could cause "spatial shifts" due to movement, peristalsis, or contrast medium flow 17."
"Each substance owns a unique K-shell binding energy; known as the K-edge. There is a significant spike in attenuation that results just beyond the energy of the K-edge; this peak is unique to every material and holds valuable information about the substance's composition."
"There are different DECT acquisition technologies available from different vendors. These can be broadly classified as techniques that occur before the patient is scanned (prospective) which need to be pre-selected and those that occur after the patient is scanned (retrospective) which do not need to be pre-selected."