-
1
-
2
-
3
-
4
-
5
-
6
-
7
-
8
-
9
Resolution Recovery with Pre-Reconstruction Fourier Transforms Filtering for a High Resolution Animal SPECT System
Published 2018-12-01“…Fourier filtering image led to improvement of image quality where hot rods with 1.6 and 1.8 mm in diameter could be recognized clearly in our presented algorithm in dedicated hot rod phantom. …”
Get full text
Article -
10
Performance Evaluation of a Preclinical SPECT Scanner with a Collimator Designed for Medium-Sized Animals
Published 2022-01-01“…The spatial resolution and contrast-to-noise ratios (CNRs) were evaluated with images of a hot-rod Derenzo phantom using different activity concentrations. …”
Get full text
Article -
11
Multi-pinhole collimator design in different numbers of projections for brain SPECT
Published 2023-09-01“…The 3D NURBS-based HUman Brain (NHUB) phantom was used in the analytical simulation to model 99mTc-HMPAO and 99mTc-TRODAT distributions. The 2D Derenzo hot-rod phantom and star phantom were used in Monte Carlo simulations to evaluate the spatial resolution and angular sampling performance of MPH. …”
Get full text
Article -
12
Image quality evaluation for a clinical organ-targeted PET camera
Published 2024-03-01“…Recovery coefficients were measured to be 0.21 for the 1 mm hot rod and up to 0.89 for the 5 mm hot rod of NEMA NU-4 Image Quality phantom.DiscussionDemonstrated ability to accurately reconstruct activity in tumors as small as 5 mm suggests that the Radialis PET technology may be well suited for emerging clinical applications such as image guided assessment of response to neoadjuvant systemic treatment (NST) in lesions smaller than 2 cm. …”
Get full text
Article -
13
Observations on the Chinese idea of fate
Published 1967-01-01“…An oracular technique had been developed, "which consisted in touching shells or bones on one side with a little red-hot rod and interpreting according to certain patterns the cracks that arose on the other side as the answers of the ancestral spirits to the questions of the kings. …”
Get full text
Article -
14
High-sensitivity cardiac SPECT system design with collimator-less interspaced mosaic-patterned scintillators
Published 2023-06-01“…The 6-mm rods in the hot rod phantom and the 5-mm disks in the disk phantom are clearly separable. …”
Get full text
Article -
15
-
16
Quarter-Millimeter-Resolution Molecular Mouse Imaging with U-SPECT
Published 2015-01-01“…The reconstructed spatial resolution (the smallest visible capillary diameter in a hot-rod resolution phantom) was 0.25 mm. Knee joint images show tiny structures such as the femur epicondyle sulcus, as well as a clear separation between cortical and trabecular bone structures. …”
Get full text
Article -
17
Crystal scatter effects in a large-area dual-panel Positron Emission Mammography system.
Published 2024-01-01“…A drastic reduction in peak-to-valley ratios for the same hot-rod diameters was observed, up to a factor of 14 for the monolithic crystals and 7.5 for the pixelated ones.…”
Get full text
Article -
18
Spatial resolution of a preclinical PET tomograph
Published 2021-04-01“…In this work, a point source of 22Na and a hot rod style phantom filled with 18F-FDG solution were used. …”
Get full text
Article -
19
Significant artefactual noise in 90Y TOF-PET imaging of low specific activity phantoms arises despite increased acquisition time
Published 2019-11-01“…We performed acquisitions of the Jaszczak Deluxe phantom in which the hot rod insert was only partially filled with 2.6 GBq of 90Y. …”
Get full text
Article -
20
Performance evaluation of a preclinical SPECT/CT system for multi-animal and multi-isotope quantitative experiments
Published 2022-10-01“…The performance of the SPECT was evaluated for two collimators dedicated for mouse (UHS-M) and rat imaging (UHR-RM) in terms of sensitivity, energy resolution, uniformity and spatial resolution. Point sources, hot‑rod and uniform phantoms were scanned, and additional tests were carried out to evaluate singular settings such as simultaneous multi-isotope acquisition and imaging with a multi-bed system. …”
Get full text
Article