Generation and analysis of clinically relevant breast imaging x‐ray spectra

AM Hernandez, JA Seibert, A Nosratieh… - Medical …, 2017 - Wiley Online Library
Purpose The purpose of this work was to develop and make available x‐ray spectra for
some of the most widely used digital mammography (DM), breast tomosynthesis (BT), and …

Scatter correction for full‐fan volumetric CT using a stationary beam blocker in a single full scan

T Niu, L Zhu - Medical physics, 2011 - Wiley Online Library
Purpose: Applications of volumetric CT (VCT) are hampered by shading and streaking
artifacts in the reconstructed images. These artifacts are mainly due to strong x‐ray scatter …

Radiation dose and image-quality assessment in computed tomography

JM Boone, JA Brink, S Edyvean… - Journal of the …, 2012 - mayoclinic.elsevierpure.com
Computed tomography has experienced a number of significant technological advances
over the past decade, and these have had pronounced impacts on the accuracy of radiation …

phantom study to evaluate the dose and image quality effects of a computed tomography organ‐based tube current modulation technique

D Gandhi, DJ Crotty, GM Stevens… - Medical physics, 2015 - Wiley Online Library
Purpose: This technical note quantifies the dose and image quality performance of a
clinically available organ‐dose‐based tube current modulation (ODM) technique, using …

Dynamic bowtie filter for cone-beam/multi-slice CT

F Liu, Q Yang, W Cong, G Wang - PloS one, 2014 - journals.plos.org
A pre-patient attenuator (“bowtie filter” or “bowtie”) is used to modulate an incoming x-ray
beam as a function of the angle of the x-ray with respect to a patient to balance the photon …

The effects of physics‐based data augmentation on the generalizability of deep neural networks: Demonstration on nodule false‐positive reduction

AO Omigbodun, F Noo, M McNitt‐Gray, W Hsu… - Medical …, 2019 - Wiley Online Library
Purpose An important challenge for deep learning models is generalizing to new datasets
that may be acquired with acquisition protocols different from the training set. It is not always …

X-ray energy spectrum estimation based on a virtual computed tomography system

T Higuchi, A Haga - Biomedical Physics & Engineering Express, 2023 - iopscience.iop.org
This paper presents a method for estimating the x-ray energy spectrum for computed
tomography (CT) in the diagnostic energy range from the reconstructed CT image itself. To …

Image quality improvement in bowtie‐filter‐equipped cone‐beam CT using a dual‐domain neural network

S Yun, U Jeong, D Lee, H Kim, S Cho - Medical Physics, 2023 - Wiley Online Library
Background The bowtie‐filter in cone‐beam CT (CBCT) causes spatially nonuniform x‐ray
beam often leading to eclipse artifacts in the reconstructed image. The artifacts are further …

Dynamic bowtie for fan-beam CT

F Liu, G Wang, W Cong, SS Hsieh… - Journal of X-ray …, 2013 - content.iospress.com
A bowtie is a filter used to shape an x-ray beam and equalize its flux reaching different
detector channels. For development of spectral CT with energy discriminating photon …

Kilovoltage rotational external beam radiotherapy on a breast computed tomography platform: a feasibility study

ND Prionas, SE McKenney, RL Stern… - International Journal of …, 2012 - Elsevier
PURPOSE: To demonstrate the feasibility of a dedicated breast computed tomography (bCT)
platform to deliver rotational kilovoltage (kV) external beam radiotherapy (RT) for partial …