Search Results for author: Fumio Hashimoto

Found 7 papers, 0 papers with code

List-Mode PET Image Reconstruction Using Dykstra-Like Splitting

no code implementations1 Mar 2024 Kibo Ote, Fumio Hashimoto, Yuya Onishi, Yasuomi Ouchi

Convergence of the block iterative method in image reconstruction for positron emission tomography (PET) requires careful control of relaxation parameters, which is a challenging task.

Denoising Image Reconstruction

ReconU-Net: a direct PET image reconstruction using U-Net architecture with back projection-induced skip connection

no code implementations5 Dec 2023 Fumio Hashimoto, Kibo Ote

Despite limited training on simulated data, the proposed ReconU-Net successfully reconstructed the real Hoffman brain phantom, unlike other deep learning-based direct reconstruction methods, which failed to produce a reconstructed image.

Image Reconstruction

Fully 3D Implementation of the End-to-end Deep Image Prior-based PET Image Reconstruction Using Block Iterative Algorithm

no code implementations22 Dec 2022 Fumio Hashimoto, Yuya Onishi, Kibo Ote, Hideaki Tashima, Taiga Yamaya

The simulation results showed that the proposed method improved the PET image quality by reducing statistical noise and preserved a contrast of brain structures and inserted tumor compared with other algorithms.

Image Reconstruction

List-Mode PET Image Reconstruction Using Deep Image Prior

no code implementations28 Apr 2022 Kibo Ote, Fumio Hashimoto, Yuya Onishi, Takashi Isobe, Yasuomi Ouchi

However, the application of deep learning techniques to list-mode PET image reconstruction has not been progressed because list data is a sequence of bit codes and unsuitable for processing by convolutional neural networks (CNN).

Image Reconstruction

Anatomical-Guided Attention Enhances Unsupervised PET Image Denoising Performance

no code implementations2 Sep 2021 Yuya Onishi, Fumio Hashimoto, Kibo Ote, Hiroyuki Ohba, Ryosuke Ota, Etsuji Yoshikawa, Yasuomi Ouchi

Although supervised convolutional neural networks (CNNs) often outperform conventional alternatives for denoising positron emission tomography (PET) images, they require many low- and high-quality reference PET image pairs.

Image Denoising

Direct PET Image Reconstruction Incorporating Deep Image Prior and a Forward Projection Model

no code implementations2 Sep 2021 Fumio Hashimoto, Kibo Ote

Convolutional neural networks (CNNs) have recently achieved remarkable performance in positron emission tomography (PET) image reconstruction.

Image Reconstruction

Cannot find the paper you are looking for? You can Submit a new open access paper.