Results 1 to 10 of about 137,016 (337)

Development of a patient-specific chest computed tomography imaging phantom with realistic lung lesions using silicone casting and three-dimensional printing [PDF]

Scientific Reports, 2023
The validation of the accuracy of the quantification software in computed tomography (CT) images is very challenging. Therefore, we proposed a CT imaging phantom that accurately represents patient-specific anatomical structures and randomly integrates ...
Dayeong Hong, Sojin Moon, Joon Beom Seo, Namkug Kim   +3 more
doaj   +2 more sources

Design and application of a realistic and multifunctional retinal phantom for standardizing ophthalmic imaging systems [PDF]

Communications Engineering
Retinal imaging is essential for diagnosing and treating retinal diseases. However, the lack of standardized and realistic optical phantoms limits the calibration and validation of imaging systems.
Hyun-Ji Lee, Tae Geol Lee, Il Doh, Sang-Won Lee   +3 more
doaj   +2 more sources

A novel tissue-mimicking phantom for US/CT/MR-guided tumor puncture and thermal ablation

International Journal of Hyperthermia, 2022
Aim This study aimed to develop a novel tumor-bearing tissue phantom model that can be used for US/CT/MR-guided tumor puncture and thermal ablation.Methods The phantom model comprised two parts: a normal tissue-mimicking phantom and a tumor-mimicking ...
Xinyu Zhong, Ping Zhou, Yongfeng Zhao, Wengang Liu, Xinghao Zhang   +4 more
doaj   +1 more source

Detectability and Volumetric Accuracy of Pulmonary Nodules in Low-Dose Photon-Counting Detector Computed Tomography: An Anthropomorphic Phantom Study

Diagnostics, 2023
The aim of this phantom study was to assess the detectability and volumetric accuracy of pulmonary nodules on photon-counting detector CT (PCD-CT) at different low-dose levels compared to conventional energy-integrating detector CT (EID-CT).
Joost F. Hop, Anna N. H. Walstra, Gert-Jan Pelgrim, Xueqian Xie, Noor A. Panneman, Niels W. Schurink, Sebastian Faby, Marcel van Straten, Geertruida H. de Bock, Rozemarijn Vliegenthart, Marcel J. W. Greuter   +10 more
doaj   +1 more source

An anatomically correct 3D‐printed mouse phantom for magnetic particle imaging studies

Bioengineering & Translational Medicine, 2022
We report anatomically correct 3D‐printed mouse phantoms that can be used to plan experiments and evaluate analysis protocols for magnetic particle imaging (MPI) studies.
Nicole S. Sarna, Leyda Marrero‐Morales, Ryan DeGroff, Angelie Rivera‐Rodriguez, Sitong Liu, Andreina Chiu‐Lam, Hayden J. Good, Carlos M. Rinaldi‐Ramos   +7 more
doaj   +1 more source

A NIM PET/CT phantom for evaluating the PET image quality of micro-lesions and the performance parameters of CT

BMC Medical Imaging, 2021
Background The commonly used NEMA IEC Body phantom has a number of defects, hindering its application for detecting micro-lesions and measuring the performance parameters of computed tomography (CT).
Shujie Lu, Peng Zhang, Chengwei Li, Jie Sun, Wenli Liu, Pu Zhang   +5 more
doaj   +1 more source

A cadaveric breast cancer tissue phantom for phase‐contrast X‐ray imaging applications

Animal Models and Experimental Medicine, 2023
Background As mammography X‐ray imaging technologies advance and provide elevated contrast in soft tissues, a need has developed for reliable imaging phantoms for use in system design and component calibration.
Cody C. Rounds, Chengyue Li, Wei Zhou, Kenneth M. Tichauer, Jovan G. Brankov   +4 more
doaj   +1 more source

Simulation of Capillary Hemodynamics and Comparison with Experimental Results of Microphantom Perfusion Weighted Imaging [PDF]

Journal of Biomedical Physics and Engineering, 2020
Background: Perfusion imaging, one of MRI’s techniques, is widely used to test damaged tissues of the body. The parameters used in this technique include cerebral blood flow (CBF), cerebral blood volume (CBV), and mean transit time (MTT). The MRI scanner
S Shurche, N Riyahi Alam
doaj   +1 more source

3D printed patient-specific thorax phantom with realistic heterogenous bone radiopacity using filament printer technology

Zeitschrift für Medizinische Physik, 2022
Current medical imaging phantoms are usually limited by simplified geometry and radiographic skeletal homogeneity, which confines their usage for image quality assessment. In order to fabricate realistic imaging phantoms, replication of the entire tissue
Sepideh Hatamikia, Gernot Kronreif, Alexander Unger, Gunpreet Oberoi, Laszlo Jaksa, Ewald Unger, Stefan Koschitz, Ingo Gulyas, Nikolaus Irnstorfer, Martin Buschmann, Joachim Kettenbach, Wolfgang Birkfellner, Andrea Lorenz   +12 more
doaj   +1 more source

Robustness Assessment of Images From a 0.35T Scanner of an Integrated MRI-Linac: Characterization of Radiomics Features in Phantom and Patient Data

Technology in Cancer Research & Treatment, 2022
Purpose: Radiomics entails the extraction of quantitative imaging biomarkers (or radiomics features) hypothesized to provide additional pathophysiological and/or clinical information compared to qualitative visual observation and interpretation.
Rebecka Ericsson-Szecsenyi MSc, Geoffrey Zhang PhD, Gage Redler PhD, Vladimir Feygelman PhD, Stephen Rosenberg MD, Kujtim Latifi PhD, Crister Ceberg PhD, Eduardo G. Moros PhD   +7 more
doaj   +1 more source