Paper

{
  "raw_xml": "<entry>\n    <id>http://arxiv.org/abs/2602.20668v1</id>\n    <title>Development of a cost-effective X-ray imaging device based on Raspberry Pi Camera</title>\n    <updated>2026-02-24T08:16:12Z</updated>\n    <link href='https://arxiv.org/abs/2602.20668v1' rel='alternate' type='text/html'/>\n    <link href='https://arxiv.org/pdf/2602.20668v1' rel='related' title='pdf' type='application/pdf'/>\n    <summary>This study reports the development and characterization of a cost-effective X-ray imaging device built from Raspberry Pi components, including a high-quality 12.3-megapixel camera configured for indirect detection with a Gd2O2S: Tb scintillation screen. The device was evaluated under both ambient light and X-ray exposure conditions. Initial characterization under ambient light ensured proper optical focusing; subsequently, camera settings (ISO and exposure time) were evaluated and optimized for X-ray imaging performance. Spatial resolution of the developed device was quantified using the Slanted-Edge method to derive the Modulation Transfer Function (MTF). The device achieves MTF20 values of 68 lp/mm under ambient light and 25 lp/mm under X-ray irradiation (50 and 70 kV) with Gd2O2S:Tb screen. Besides, the modularity of the developed device was confirmed by conducting the tests with LYSO:Ce and GAGG:Ce screens. Results demonstrate that this compact, cost-effective platform delivers spatial resolution comparable to clinical radiography systems, with potential applications in scientific, educational, and medical contexts where cost and portability are critical factors.</summary>\n    <category scheme='http://arxiv.org/schemas/atom' term='physics.ins-det'/>\n    <published>2026-02-24T08:16:12Z</published>\n    <arxiv:primary_category term='physics.ins-det'/>\n    <author>\n      <name>Nguyen Duc Ton</name>\n    </author>\n    <author>\n      <name>Nguyen Thanh Luan</name>\n    </author>\n    <author>\n      <name>Faizan Anjum</name>\n    </author>\n    <author>\n      <name>D. Joseph Daniel</name>\n    </author>\n    <author>\n      <name>Sunghwan Kim</name>\n    </author>\n    <author>\n      <name>Suchart Kothan</name>\n    </author>\n    <author>\n      <name>Jakrapong Kaewkhao</name>\n    </author>\n    <author>\n      <name>Hong Joo Kim</name>\n    </author>\n  </entry>"
}