Create Publications “2025-11-19-trajectory-generation-for-roi-expansion-in-dental-cbct-imaging-an-out-of-fov-roi-annotation-guided-arc-scan-based-approach”

Author: cb580

_publications/2025-11-19-trajectory-generation-for-roi-expansion-in-dental-cbct-imaging-an-out-of-fov-roi-annotation-guided-arc-scan-based-approach.md

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+---
+layout: publication-single
+title: "Trajectory generation for ROI expansion in dental CBCT imaging: An
+  out-of-FOV ROI annotation guided arc scan-based approach"
+abstract: This study introduces a novel optimization approach for
+  source-detector trajectories, designed to simultaneously extend the small
+  dental [CBCT](https://www.sciencedirect.com/topics/materials-science/tomography
+  "Learn more about CBCT from ScienceDirect's AI-generated Topic Pages") [field
+  of
+  view](https://www.sciencedirect.com/topics/physics-and-astronomy/field-of-view
+  "Learn more about field of view from ScienceDirect's AI-generated Topic
+  Pages") (FOV) at specific regions of interest (ROIs) while reducing radiation
+  dose. The proposed algorithm automatically customizes and produces a
+  mechanically feasible arc-based scan trajectory to target predefined ROIs,
+  expanding the FOV beyond the standard range while utilizing only the necessary
+  projections to reconstruct the region of interest, rather than those required
+  for reconstruction of the entire volume. This approach enables a significant
+  reduction in the number of projections. Both qualitative and quantitative
+  analyses, including peak signal-to-noise ratio (PSNR) values greater than 30
+  dB and structural [similarity
+  index](https://www.sciencedirect.com/topics/engineering/similarity-index
+  "Learn more about similarity index from ScienceDirect's AI-generated Topic
+  Pages") measure (SSIM) scores above 0.9, demonstrate that the method
+  successfully enhances the FOV while maintaining high image quality. Notably,
+  the approach achieves a significant reduction in the number of projections up
+  to 47% compared to the conventional limited-angle [circular
+  trajectory](https://www.sciencedirect.com/topics/engineering/circular-trajectory
+  "Learn more about circular trajectory from ScienceDirect's AI-generated Topic
+  Pages"). This is the first study to explore the simultaneous extension of the
+  FOV and radiation dose reduction in
+  dental [CBCT](https://www.sciencedirect.com/topics/physics-and-astronomy/tomography
+  "Learn more about CBCT from ScienceDirect's AI-generated Topic
+  Pages") imaging, providing a promising solution for improving clinical
+  outcomes and treatment planning in
+  next-generation [CBCT](https://www.sciencedirect.com/topics/earth-and-planetary-sciences/tomography
+  "Learn more about CBCT from ScienceDirect's AI-generated Topic
+  Pages") systems.
+published: 2025-11-19
+authors:
+  internal_authors:
+    - Ander Biguri
+    - Carola-Bibiane Schönlieb
+  external_authors:
+    - family: Ragib Shahriar Islam
+      given: "S M "
+    - family: Landi
+      given: "Claudio "
+    - family: Di Domenico
+      given: "Giovanni "
+    - family: Grün
+      given: " Pascal "
+    - family: Sarti
+      given: "Cristina "
+    - family: Turhani
+      given: "Dritan "
+    - family: Kronreif
+      given: "Gernot "
+    - family: Birkfellner
+      given: "Wolfgang "
+    - family: Hatamikia
+      given: Sepideh
+details:
+  journal: "Computational and Structural Biotechnology Journal "
+  volume: 28, 2025, Pages 211-216
+  pages: 211-216
+  pdf: https://www.sciencedirect.com/science/article/pii/S2001037025002302/pdfft?md5=64264e0d27af0ed79a179c0d805401f1&pid=1-s2.0-S2001037025002302-main.pdf
+  html: https://www.sciencedirect.com/science/article/pii/S2001037025002302#ab0010
+---