The essence of this invention is a method that couples network architecture using neural implicit representations coupled with a novel parametric motion field to perform limited angle 4D-CT reconstruction of deforming scenes.
Keywords
- Show all (102)
- Additive Manufacturing (37)
- Imaging Systems (9)
- Photoconductive Semiconductor Switches (PCSS) (9)
- 3D Printing (7)
- Semiconductors (6)
- Optical Switches (4)
- Electric Grid (3)
- Power Electronics (3)
- Sensors (3)
- Manufacturing Automation (2)
- MEMS Sensors (2)
- Optical Sensors (2)
- Precision Engineering (2)
- Spectrometers (2)
- Synthesis and Processing (2)
- Manufacturing Simulation (1)
- Volumetric Additive Manufacturing (1)
- (-) Manufacturing Improvements (3)
- (-) Computing (2)
- (-) Particle Accelerators (2)
LLNL’s novel approach utilizes a number of techniques to improve reconstruction accuracy:
The approach is to build a high voltage insulator consisting of two materials: Poly-Ether-Ether-Ketone (“PEEK”) and Machinable Ceramic (“MACOR”). PEEK has a high stress tolerance but cannot withstand high temperatures, while MACOR has high heat tolerance but is difficult to machine and can be brittle. MACOR is used for the plasma-facing surface, while PEEK will handle the stresses and high…
LLNL’s approach is to use their patented Photoconductive Charge Trapping Apparatus (U.S. Patent No. 11,366,401) as the active switch needed to discharge voltage across a vacuum gap in a particle accelerator, like the one described in their other patent (U.S. Patent No.
To solve these challenges using new and existing CT system designs, LLNL has developed an innovative software package for CT data processing and reconstruction. Livermore Tomography Tools (LTT) is a modern integrated software package that includes all aspects of CT modeling, simulation, reconstruction, and analysis algorithms based on the latest research in the field. LTT contains the most…
LLNL pioneered the use of tomographic reconstruction to determine the power density of electron beams using profiles of the beam taken at a number of angles. LLNL’s earlier diagnostic consisted of a fixed number of radially oriented sensor slits and required the beam to be circled over them at a fixed known diameter to collect data. The new sensor design incorporates annular slits instead,…