Showing 1 - 20 results of 28 for search '"hot rod"', query time: 0.38s Refine Results
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9

    Resolution Recovery with Pre-Reconstruction Fourier Transforms Filtering for a High Resolution Animal SPECT System by Reza Hashemi Shahraki, Isaac Shiri, Parham Geramifar, Afshin Akbarzadeh, Amir Hossein Sanaat, Mohammad Reza Ay

    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. 10

    Performance Evaluation of a Preclinical SPECT Scanner with a Collimator Designed for Medium-Sized Animals by Yohji Matsusaka, Rudolf A. Werner, Paula Arias-Loza, Naoko Nose, Takanori Sasaki, Xinyu Chen, Constantin Lapa, Takahiro Higuchi

    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. 11

    Multi-pinhole collimator design in different numbers of projections for brain SPECT by Wenbo Huang, Greta S. P. Mok, Greta S. P. Mok

    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. 12

    Image quality evaluation for a clinical organ-targeted PET camera by Brandon Baldassi, Harutyun Poladyan, Anirudh Shahi, Henry Maa-Hacquoil, Madeline Rapley, Borys Komarov, Justin Stiles, Vivianne Freitas, Vivianne Freitas, Michael Waterston, Olexiy Aseyev, Alla Reznik, Alla Reznik, Oleksandr Bubon, Oleksandr Bubon, Oleksandr Bubon

    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. 13

    Observations on the Chinese idea of fate by Gunnar Sjöholm

    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. 14
  15. 15
  16. 16

    Quarter-Millimeter-Resolution Molecular Mouse Imaging with U-SPECT by Oleksandra Ivashchenko, Frans van der Have, Jose L. Villena, Harald C. Groen, Ruud M. Ramakers, Harrie H. Weinans, Freek J. Beekman

    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. 17

    Crystal scatter effects in a large-area dual-panel Positron Emission Mammography system. by Rahal Saaidi, Mercedes Rodríguez-Villafuerte, Héctor Alva-Sánchez, Arnulfo Martínez-Dávalos

    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. 18

    Spatial resolution of a preclinical PET tomograph by Guilherme Cavalcante de Albuquerque Souza, Rodrigo Modesto Gadelha Gontijo, Juliana Batista da Silva, Marcelo Mamede, Andréa Vidal Ferreira

    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. 19

    Significant artefactual noise in 90Y TOF-PET imaging of low specific activity phantoms arises despite increased acquisition time by Michel Hesse, Stephan Walrand

    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. 20

    Performance evaluation of a preclinical SPECT/CT system for multi-animal and multi-isotope quantitative experiments by Elena Prieto, Leticia Irazola, María Collantes, Margarita Ecay, Teresa Cuenca, Josep Mª Martí-Climent, Iván Peñuelas

    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