Grapefruit USA Inc (GPFT)

[Nihonto Chicken]

Time To Generate First Image???

Re Dean's hand in the Dvis in the video, I'm reminded of something KingKongGuru said about the algorithm used to generate the (near) real-time 3D images. As I (think I) remember, the reason it works so fast is that it doesn't update all data points at once per revolution of the radiation source, but instead only a small fraction (was it one twentieth?) at a time. This will work okay as long as the target isn't moving very fast. But, (big BUT!), it will take, say, twenty revolutions (or whatever the correct number is) to generate the first fully complete image. While it will operate in near real time after the first full data set is obtained, there is a lag time to generate that first set. So maybe Dean's hand appeared as an incomplete image (i.e., a smudge), because it wasn't in a stationary position for twenty revolutions (or the magic number) of the x-ray source to initiate a full data set.

This brings up another consideration, what is the radiation dose to the patient to get the full initial image? This must be added to the dose given while the real time imaging is performed.

Just my guessing out loud. Would appreciate input from those more familiar with the technology.

NC