Results 11 to 20 of about 1,826,590 (358)

Iterative poisson surface reconstruction (iPSR) for unoriented points [PDF]

ACM Transactions on Graphics, 2022
Poisson surface reconstruction (PSR) remains a popular technique for reconstructing watertight surfaces from 3D point samples thanks to its efficiency, simplicity, and robustness.
Fei Hou, Chiyu Wang, Wencheng Wang, Hong Qin, Chen Qian, Ying He   +5 more
semanticscholar   +1 more source

Joint application of hybrid iterative reconstruction and adaptive filters on neck-and-shoulder CT imaging: A clinical evaluation. [PDF]

J Appl Clin Med Phys, 2022
Abstract Purpose To assess whether the joint application of hybrid iterative reconstruction (HIR) and an adaptive filter (AF) could reduce streak artifacts and improve image quality of neck‐and‐shoulder computed tomography (CT). Methods This study included 96 patients with suspicious neck lesions who underwent a routine nonenhanced scan on a 64‐slice ...
Jin W, Ma Y, Han D, Xie X, Zhang W, Wu Y, Zhang G.   +6 more
europepmc   +2 more sources

Iterative Reconstruction of Signals on Graph [PDF]

IEEE Signal Processing Letters, 2020
We propose an iterative algorithm to interpolate graph signals from only a partial set of samples. Our method is derived from the well known Papoulis-Gerchberg algorithm by considering the optimal value of a constant involved in the iteration step. Compared with existing graph signal reconstruction algorithms, the proposed method achieves similar or ...
Emanuele Brugnoli, Elena Toscano, Calogero Vetro   +2 more
openaire   +5 more sources

Quantum Iterative Reconstruction for Abdominal Photon-counting Detector CT Improves Image Quality.

Radiology, 2022
Background An iterative reconstruction (IR) algorithm was introduced for clinical photon-counting detector (PCD) CT. Purpose To investigate the image quality and the optimal strength level of a quantum IR algorithm (QIR; Siemens Healthcare) for virtual ...
T. Sartoretti, Anna Landsmann, Dominik Nakhostin, M. Eberhard, Christian Röeren, V. Mergen, K. Higashigaito, R. Raupach, H. Alkadhi, A. Euler   +9 more
semanticscholar   +1 more source

Quantum Iterative Reconstruction for Low-Dose Ultra-High-Resolution Photon-Counting Detector CT of the Lung

Diagnostics, 2022
The aim of this study was to characterize image quality and to determine the optimal strength levels of a novel iterative reconstruction algorithm (quantum iterative reconstruction, QIR) for low-dose, ultra-high-resolution (UHR) photon-counting detector ...
T. Sartoretti, D. Racine, V. Mergen, Lisa Jungblut, P. Monnin, T. Flohr, K. Martini, T. Frauenfelder, H. Alkadhi, A. Euler   +9 more
semanticscholar   +1 more source

Improvement of depiction of the intracranial arteries on brain CT angiography using deep learning reconstruction

Journal of Integrative Neuroscience, 2021
To evaluate the ability of a commercialized deep learning reconstruction technique to depict intracranial vessels on the brain computed tomography angiography and compare the image quality with filtered-back-projection and hybrid iterative ...
Chuluunbaatar Otgonbaatar, Jae-Kyun Ryu, Seonkyu Kim, Jung Wook Seo, Hackjoon Shim, Dae Hyun Hwang   +5 more
doaj   +1 more source

Deep learning reconstruction versus iterative reconstruction for cardiac CT angiography in a stroke imaging protocol: reduced radiation dose and improved image quality.

Quantitative Imaging in Medicine and Surgery, 2021
Background To assess the radiation dose and image quality of cardiac computed tomography angiography (CCTA) in an acute stroke imaging protocol using a deep learning reconstruction (DLR) method compared to a hybrid iterative reconstruction algorithm ...
A. Bernard, P. Comby, Brivaël Lemogne, K. Haioun, F. Ricolfi, O. Chevallier, R. Loffroy   +6 more
semanticscholar   +1 more source

Usefulness of Model-Based Iterative Reconstruction in Brain CT as Compared With Hybrid Iterative Reconstruction [PDF]

Journal of Computer Assisted Tomography, 2021
Objective The aim of this study was to compare the contrast of gray to white matter between forward-projected model-based iterative reconstruction solution (FIRST) and hybrid iterative reconstruction (IR) by measuring computed tomography value of brain parenchyma.
Hiroshi Ito, Osamu Hasegawa, Daichi Kuroiwa, Hirofumi Sekino, Shiro Ishii, Shigeyasu Sugawara, Motoharu Hakozaki, Hideki Fujimaki, Hiroki Suenaga, Hirotake Watanabe, Ryo Yamakuni   +10 more
openaire   +3 more sources

GNSS troposphere tomography based on two-step reconstructions using GPS observations and COSMIC profiles [PDF]

Annales Geophysicae, 2013
Traditionally, balloon-based radiosonde soundings are used to study the spatial distribution of atmospheric water vapour. However, this approach cannot be frequently employed due to its high cost. In contrast, GPS tomography technique can obtain water
P. Xia, P. Xia, C. Cai, Z. Liu
doaj   +1 more source

Factors modulating 99mTc‐MAA planar lung dosimetry for 90Y radioembolization

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose To investigate the accuracy and biases of predicted lung shunt fraction (LSF) and lung dose (LD) calculations via 99mTc‐macro‐aggregated albumin (99mTc‐MAA) planar imaging for treatment planning of 90Y‐microsphere radioembolization.
Benjamin P. Lopez, Armeen Mahvash, James P. Long, Marnix G. E. H. Lam, S. Cheenu Kappadath   +4 more
wiley   +1 more source