Dual, orthogonal, backlit pinhole radiography in OMEGA experiments

Dual, orthogonal, backlit pinhole radiography in OMEGA experiments

Backlit pinhole radiography used with ungated film as a detector creates x-ray radiographs with increased resolution and contrast. Current hydrodynamics experiments on the OMEGA Laser use a three-dimensional sinusoidal pattern as a seed perturbation for the study of instabilities. The structure of this perturbation makes it highly desirable to obtain two simultaneous orthogonal backlighting vie...

Investigating orthogonal radiography in the diagnosis of radial head fractures.

AbstractID: 9840 Title: Dual Energy Chest Radiography

ID: 9840 Title: Dual Energy Chest Radiography Dual Energy Chest Radiography Visual detection of pulmonary abnormalities on screen-film radiographs is notoriously unreliable. Digital radiography can improve diagnostic accuracy due to its greater latitude, improved local contrast and more consistent image quality compared to screen-film systems. In addition to facilitating detection by traditiona...

Orthogonal Dual Hyperovals, Symplectic Spreads and Orthogonal Spreads

Orthogonal spreads in orthogonal spaces of type V (2n + 2, 2) produce large numbers of rank n dual hyperovals in orthogonal spaces of type V (2n, 2). The construction resembles the method for obtaining symplectic spreads in V (2n, q) from orthogonal spreads in V (2n + 2, q) when q is even.

Pinhole Mask Sensor a Pinhole Mask Sensor

Figure 1 shows an example of a light field camera with a pinhole mask in front of the sensor. If we look at the sensor in 1D and assume an total x-resolution of 900 pixels and a Θ resolution of 9, the local x resolution is 100. The disadvantages are therefore a loss in resolution and a loss of light, as most of the light gets blocked by the mask. Therefore, while this model is very clean on a t...