Point spread functionRegistrationScattered data approximationMRCP studyMR image acquisition of moving organs remains challenging despite the advances in ultra-fast 2D MRI sequences. Post-acquisition techniques have been proposed to increase spatial resolution a posteriori by combining acquired orthogonal stacks...
they have an associated point spread function (PSF). This PSF is commonly a property of the acquisi- tion or reconstruction system. For example, 3D MRI images have approximately Gaussian PSFs due to the low-pass filters in the receiver coils, while CT and PET images have spatially variant ...
* 题目: Point spread function estimation for blind image deblurring problems based on framelet transform* 链接: arxiv.org/abs/2112.1100* 作者: Reza Parvaz* 摘要: 图像处理中最重要的问题之一是由于模糊过程而丢失的图像的近似。这些类型的问题分为非盲问题和盲问题。由于原始图像和点扩散函数估计的未知性...
In this work, we engineer a LanM-derived protein MRI contrast agent for high-resolution vascular imaging and effective monitoring of kidney dysfunction (Fig.1a). Through sequence alignment and structural analysis, we introduce a single-point mutation into the fourth weak ion-binding site of LanM,...
“I had long COVID before it had a name,” she told me. Yet even after it had a name, even after she had been assessed, X-rayed, had an MRI and countless blood tests, she was little better off. And even once people started talking about it, the name “long COVID” offered no...
In all three cases, pre-procedure, post-operative, and follow-up high-resolution MRI, DSA, and OCT imaging revealed the successful occlusion of the VADAs and the development of in-stent stenosis, as visualized from various perspectives during intravascular angiography, and the presence of neointima...
The evaluation is conduction on 19,816 3D BOLD MRI volumes acquired on a 3T Skyra scanner. The proposed method achieves an average detection accuracy of 87.3% under a 10-mm threshold and 6.9mm as the mean error. In Leroy et al. (2020), a communicative multi-agent reinforcement learning ...
mriedo commented Sep 26, 2020 • edited I agree with Stefan that these 3 functions ar very useful but don't know if it will already be in the first implementation more focused on visualisation. For the moment these 3 functionalities are available in cloudcompare and I use them on a dai...
Article https://doi.org/10.1038/s41467-024-54167-4 Single-point mutated lanmodulin as a high- performance MRI contrast agent for vascular and kidney imaging Received: 31 January 2024 Accepted: 4 November 2024 Check for updates Yuxia Liu 1,2,11, Duyang Gao3,4,11, Yuanyuan He5,6, Jing...
but not as dramatic as above. For a system comprising a receive aperture of 63 elements, a θ of 10 degrees, and a transmit pulse from a point-source transmit aperture that extends for 5 cycles with cosine modulation, the lateral spread of the point spread function was improved by a facto...