Results 1 to 10 of about 18,463 (89)

A cone-beam photon-counting CT dataset for spectral image reconstruction and deep learning [PDF]

Scientific Data
Photon-counting CT has gained significant attention in recent years; however, publicly available datasets for spectral reconstruction and deep learning training remain limited.
Enze Zhou, Wenjian Li, Wenting Xu, Kefei Wan, Yuwei Lu, Shangbin Chen, Gang Zheng, Tianwu Xie, Qian Liu   +8 more
doaj   +2 more sources

Comparison of Image Quality and Radiation Dose Between Single-Energy and Dual-Energy Images for the Brain With Stereotactic Frames on Dual-Energy Cerebral CT

Frontiers in Radiology, 2022
BackgroundPreoperative stereotactic planning of deep brain stimulation (DBS) using computed tomography (CT) imaging in patients with Parkinson's disease (PD) is of clinical interest. However, frame-induced metal artifacts are common in clinical practice,
Xiaojing Zhao, Xiaojing Zhao, Wang Chao, Wang Chao, Yi Shan, Yi Shan, Jingkai Li, Jingkai Li, Cheng Zhao, Cheng Zhao, Miao Zhang, Miao Zhang, Jie Lu, Jie Lu   +13 more
doaj   +1 more source

True Non-Contrast Phase versus Virtual-Non Contrast: “Lights and Shadows” of Dual Energy CT Angiography in Peripheral Arterial Disease

Applied Sciences, 2023
(1) Background: The value of dual-energy CT angiography (DE-CTA) in the detection of peripheral arterial disease (PAD) has been widely recognized. We aim to evaluate the diagnostic accuracy of virtual non-contrast (VNC) imaging of DE-CTA compared to true
Chiara Floridi, Laura Maria Cacioppa, Giacomo Agliata, Michaela Cellina, Nicolo’ Rossini, Tommaso Valeri, Martina Curzi, Alessandro Felicioli, Alessandra Bruno, Marzia Rosati, Roberto Candelari, Andrea Giovagnoni   +11 more
doaj   +1 more source

Comparison of True and Virtual Non-Contrast Images of Liver Obtained with Single- Source Twin Beam and Dual-Source Dual-Energy CT

Journal of the Korean Society of Radiology, 2023
Purpose To assess the magnitude of differences between attenuation values of the true non-contrast image (TNC) and virtual non-contrast image (VNC) derived from twin-beam dual-energy CT (tbDECT) and dual-source DECT (dsDECT).
Jeong Sub Lee, Guk Myung Choi, Bong Soo Kim, Su Yeon Ko, Kyung Ryeol Lee, Jeong Jae Kim, Doo Ri Kim   +6 more
doaj   +1 more source

A Dual-Energy CT Radiomics of the Regional Largest Short-Axis Lymph Node Can Improve the Prediction of Lymph Node Metastasis in Patients With Rectal Cancer

Frontiers in Oncology, 2022
ObjectiveTo explore the value of dual-energy computed tomography (DECT) radiomics of the regional largest short-axis lymph nodes for evaluating lymph node metastasis in patients with rectal cancer.Materials and MethodsOne hundred forty-one patients with ...
Dongqing Wang, Dongqing Wang, Zijian Zhuang, Zijian Zhuang, Shuting Wu, Jixiang Chen, Xin Fan, Mengsi Liu, Haitao Zhu, Haitao Zhu, Ming Wang, Jinmei Zou, Qun Zhou, Peng Zhou, Jing Xue, Xiangpan Meng, Xiangpan Meng, Shenghong Ju, Shenghong Ju, Lirong Zhang, Lirong Zhang   +20 more
doaj   +1 more source

Coronary Calcium Scoring with First Generation Dual-Source Photon-Counting CT—First Evidence from Phantom and In-Vivo Scans

Diagnostics, 2021
We evaluated the accuracy of coronary artery calcium (CAC) scoring on a dual-source photon-counting detector CT (PCD-CT). An anthropomorphic chest phantom underwent ECG-gated sequential scanning on a PCD-CT at 120 kV with four radiation dose levels ...
Matthias Eberhard, Victor Mergen, Kai Higashigaito, Thomas Allmendinger, Robert Manka, Thomas Flohr, Bernhard Schmidt, Andre Euler, Hatem Alkadhi   +8 more
doaj   +1 more source

Performance of Spectral Photon-Counting Coronary CT Angiography and Comparison with Energy-Integrating-Detector CT: Objective Assessment with Model Observer

Diagnostics, 2021
Aims: To evaluate spectral photon-counting CT’s (SPCCT) objective image quality characteristics in vitro, compared with standard-of-care energy-integrating-detector (EID) CT. Methods: We scanned a thorax phantom with a coronary artery module at 10 mGy on
David C. Rotzinger, Damien Racine, Fabio Becce, Elias Lahoud, Klaus Erhard, Salim A. Si-Mohamed, Joël Greffier, Anaïs Viry, Loïc Boussel, Reto A. Meuli, Yoad Yagil, Pascal Monnin, Philippe C. Douek   +12 more
doaj   +1 more source

Improved Diagnostic Accuracy of Bone Metastasis Detection by Water-HAP Associated to Non-Contrast CT

Diagnostics, 2020
We examined whether water-hydroxyapatite (HAP) images improve the diagnostic accuracy of bone metastasis compared with non-contrast CT alone. We retrospectively evaluated dual-energy computed tomography (DECT) images of 83 cancer patients (bone ...
Yoshinobu Ishiwata, Yojiro Hieda, Soichiro Kaki, Shinjiro Aso, Keiichi Horie, Yusuke Kobayashi, Motoki Nakamura, Kazuhiko Yamada, Tsuneo Yamashiro, Daisuke Utsunomiya   +9 more
doaj   +1 more source

Detector-based spectral CT with a novel dual-layer technology: principles and applications

Insights into Imaging, 2017
Detector-based spectral computed tomography is a novel dual-energy CT technology that employs two layers of detectors to simultaneously collect low- and high-energy data in all patients using standard CT protocols.
Negin Rassouli, Maryam Etesami, Amar Dhanantwari, Prabhakar Rajiah   +3 more
doaj   +1 more source

Effectiveness of Virtual Non-Enhanced Images Acquired by Dual-Energy Computed Tomography in Evaluation of Patients with Suspected Acute Appendicitis

대한영상의학회지, 2016
Purpose To determine whether virtual non-enhanced (VNE) images derived from dual-energy computed tomography (DECT) can replace true non-enhanced (TNE) images in patients with suspected acute appendicitis.
Taeyeong Heo, Young Hwan Lee, Kwon-Ha Yoon   +2 more
doaj   +1 more source