Journal: Medical Physics

Article Title: Novel, full 3D scintillation dosimetry using a static plenoptic camera

doi: 10.1118/1.4884036

Figure Lengend Snippet: Comparison of the ray tracings for a plenoptic (A) and a conventional camera (B). A conventional camera's sensor pixel intensity represents a sum of light rays over all incident angles (dotted lines). A plenoptic camera's sensor pixel intensity is produced by a sum of light rays from a small, known range of incident angles (shaded region). (a) Camera sensor; (b) microlens array; (c) main lens; and (d) scintillator volume.

Article Snippet: Methods: A Raytrix R5 plenoptic camera was used to image a 10 × 10 × 10 cm 3 EJ-260 plastic scintillator embedded inside an acrylic phantom at a rate of one acquisition per second.

Techniques: Produced

Journal: Medical Physics

Article Title: Novel, full 3D scintillation dosimetry using a static plenoptic camera

doi: 10.1118/1.4884036

Figure Lengend Snippet: Schematic view of the reconstruction algorithm used in this work from the plenoptic camera point of view. After an expectation maximization step using the acquired dose projections from the camera, the dose at the plane located at a distance z from the source inside the scintillator volume (large square) is constrained using the relative dose distribution acquired using the beam's eye view projection (G) (left). Then, the dose at the ith dose voxel (small square) is optimized assuming a smooth, decreasing dose with respect to the distance to the radiation source (right).

Article Snippet: Methods: A Raytrix R5 plenoptic camera was used to image a 10 × 10 × 10 cm 3 EJ-260 plastic scintillator embedded inside an acrylic phantom at a rate of one acquisition per second.

Techniques:

Journal: Medical Physics

Article Title: Novel, full 3D scintillation dosimetry using a static plenoptic camera

doi: 10.1118/1.4884036

Figure Lengend Snippet: Experimental prototype used in this work. A 10 × 10 × 10 cm3 cube of green plastic scintillator (A) was inserted inside a cylindrical acrylic phantom (B) and imaged using a plenoptic camera (C) with the help of a 90° mirror (D) to enable radiation shielding of the camera. A beam's eye view projection of the incident radiation field was also acquired using the linac portal imager (E).

Article Snippet: Methods: A Raytrix R5 plenoptic camera was used to image a 10 × 10 × 10 cm 3 EJ-260 plastic scintillator embedded inside an acrylic phantom at a rate of one acquisition per second.

Techniques: