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4 November 2004 Fabrication of collimators for gamma-ray imaging
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Collimators capable of higher resolution and optimized for greater sensitivity can significantly improve the imaging quality of gamma-cameras for single-photon-emission computed tomography of small animals. We are applying deep x-ray lithography and gold electroforming techniques to fabricate high-resolution collimators with continuous, smooth, and thin septa. Negative SU-8 photoresist was used for mold fabrication. To be efficient, collimators for gamma-cameras designed to image 140 keV gamma-rays should be over 1.5 cm tall. The height of the collimator can be achieved by stacking the appropriate number of layers.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Olga V. Makarova, Guohua Yang, Cha-Mei Tang, Derrick C. Mancini, Ralu Divan, and Judith Yaeger "Fabrication of collimators for gamma-ray imaging", Proc. SPIE 5539, Design and Microfabrication of Novel X-Ray Optics II, (4 November 2004); doi: 10.1117/12.563748;


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