Evaluation of the feasibility of a multisource CBCT for maxillofacial imaging

S Xu, B Li, CR Inscoe, D Bastawros… - Physics in Medicine …, 2023 - iopscience.iop.org
Objective. The aim of this study was to investigate the feasibility of improving the image
quality and accuracy of cone beam computed tomography (CBCT) by replacing the …

Metal artifact reduction method based on a constrained beam-hardening estimator for polychromatic x-ray CT

J Hur, D Kim, YG Shin, H Lee - Physics in Medicine & Biology, 2021 - iopscience.iop.org
Beam hardening in x-ray computed tomography (CT) is inevitable because of the
polychromatic x-ray spectrum and energy-dependent attenuation coefficients of materials …

Scatter correction for a clinical cone‐beam CT system using an optimized stationary beam blocker in a single scan

X Liang, Y Jiang, W Zhao, Z Zhang, C Luo… - Medical …, 2019 - Wiley Online Library
Purpose Scatter contamination in the cone‐beam CT (CBCT) leads to CT number
inaccuracy, spatial nonuniformity, and loss of image contrast. In our previous work, we …

Impact of denoising on deep-learning-based automatic segmentation framework for breast cancer radiotherapy planning

JH Im, IJ Lee, Y Choi, J Sung, JS Ha, H Lee - Cancers, 2022 - mdpi.com
Simple Summary We investigated the contouring data of organs at risk from 40 patients with
breast cancer who underwent radiotherapy. The performance of denoising-based auto …

Low-dose CBCT reconstruction via joint non-local total variation denoising and cubic B-spline interpolation

H Lee, J Park, Y Choi, KR Park, BJ Min, IJ Lee - Scientific Reports, 2021 - nature.com
This study develops an improved Feldkamp–Davis–Kress (FDK) reconstruction algorithm
using non-local total variation (NLTV) denoising and a cubic B-spline interpolation-based …

Clinical implications of geometric and dosimetric uncertainties of inter-and intra-fractional movement during volumetric modulated arc therapy for breast cancer …

JJB Lee, IJ Lee, Y Choi, MJ Jeon, IH Jung, H Lee - Cancers, 2021 - mdpi.com
Simple Summary Radiotherapy is an essential treatment modality for breast cancer.
Compared to conventional radiotherapy techniques, modern radiotherapy with fewer …

A rotating beam‐blocker method for cone beam CT scatter correction

H Cui, H Zhan, X Yuan, Y Yang - Medical Physics, 2024 - Wiley Online Library
Abstract Background Cone beam CT (CBCT) is widely utilized in clinics. However, the
scatter artifact degrades the CBCT image quality, hampering the expansion of CBCT …

Feasibility of hybrid TomoHelical-and TomoDirect-based volumetric gradient matching technique for total body irradiation

CS Hong, MJ Kim, J Kim, KH Chang, K Park, DW Kim… - Radiation …, 2019 - Springer
Background Tomotherapy-based total body irradiation (TBI) is performed using the head-first
position (HFP) and feet-first position (FFP) due to treatment length exceeding the 135 cm …

Mutual information-based non-local total variation denoiser for low-dose cone-beam computed tomography

H Lee, J Sung, Y Choi, JW Kim, IJ Lee - Frontiers in Oncology, 2021 - frontiersin.org
Conventional non-local total variation (NLTV) approaches use the weight of a non-local
means (NLM) filter, which degrades performance in low-dose cone-beam computed …

Robust moving-blocker scatter correction for cone-beam computed tomography using multiple-view information

C Zhao, X Chen, L Ouyang, J Wang, M Jin - PloS one, 2017 - journals.plos.org
Scatter contamination is one of the main sources of decreasing the image quality in cone-
beam computed tomography (CBCT). The moving blocker method is economic and effective …