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Congress: ECR25
Poster Number: C-12734
Type: Poster: EPOS Radiographer (scientific)
DOI: 10.26044/ecr2025/C-12734
Authorblock: F. K. Yeung, C. W. Cheung, T. L. Chiu, C. L. K. Chung, H. M. Poon, S. K. Yu; Hong Kong/HK
Disclosures:
Fu Ki Yeung: Nothing to disclose
Chi Wai Cheung: Nothing to disclose
Tin Lok Chiu: Nothing to disclose
Cheuk Lam Kelly Chung: Nothing to disclose
Ho Ming Poon: Nothing to disclose
Siu Ki Yu: Nothing to disclose
Keywords: Computer applications, Radiation physics, CT, Image manipulation / Reconstruction, Computer Applications-General, Physics, Technology assessment, Artifacts, Radiotherapy techniques
Purpose

Computed tomography (CT) imaging frequently encounters beam hardening artifacts, especially when imaging dense bony tissues. These artifacts arise due to the polychromatic nature of X-ray beams, leading to inaccuracies in Hounsfield Unit (HU) measurements for tissues located deep within the body. Such inaccuracies can compromise diagnostic accuracy and treatment planning, particularly in radiotherapy. To mitigate these artifacts, Siemens CT scanners incorporate iterative beam hardening correction (iBHC) during image reconstruction. Although there is extensive research on the general effects of iBHC in CT imaging, limited studies have focused on evaluating its performance across varying bone thicknesses. This study aims to develop a customized phantom to systematically assess the efficacy of iBHC in reducing beam hardening artifacts in different bony environments, thereby providing a thorough evaluation of its potential clinical benefits.

GALLERY