Zobrazeno 1 - 10
of 164
pro vyhledávání: '"Physics in Medical Imaging"'
Publikováno v:
J Med Imaging (Bellingham)
PURPOSE: We set out a fully developed algorithm for adapting mammography images to appear as if acquired using different technique factors by changing the signal and noise within the images. The algorithm accounts for difference between the absorptio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bdc350e7cd2efe265894f402b59e152f
https://doi.org/10.1117/1.jmi.9.3.033504
https://doi.org/10.1117/1.jmi.9.3.033504
Autor:
Kevin J. Parker, Sedigheh S. Poul
Publikováno v:
J Med Imaging (Bellingham)
PURPOSE: The study of speckle from imaging systems has a rich history, and recently it was proposed that a fractal or power law distribution of scatterers in vascularized tissue will lead to a form of the Burr probability distribution functions for s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e8f2a74a8b34ac0a01f34919bee4d5d
https://pubmed.ncbi.nlm.nih.gov/35387205
https://pubmed.ncbi.nlm.nih.gov/35387205
Autor:
Yusuke Shibayama, Kazunori Yoshiura, Taku Kuramoto, Shinya Takarabe, Toyoyuki Kato, Masato Tatsumi, Hiroki Tsuru, Kazutoshi Okamura
Publikováno v:
J Med Imaging (Bellingham)
Purpose: The objective of this study was to investigate the effects of (i) the difference in the beam qualities on the presampled modulation transfer function (MTF) using the edge method and (ii) the readout direction of the edge profile for the phot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ab61ca820c3670dfcc8f009563435fe
https://doi.org/10.1117/1.jmi.8.4.043501
https://doi.org/10.1117/1.jmi.8.4.043501
Publikováno v:
J Med Imaging (Bellingham)
Purpose: The purpose of this study was to evaluate the potential of a prototype gallium arsenide (GaAs) photon-counting detector (PCD) for imaging of the breast. Approach: First, the contrast-to-noise ratio (CNR) using different aluminum/poly(methyl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::80b909c8dec7149a99b1fc3daa68bd11
https://doi.org/10.1117/1.jmi.8.3.033504
https://doi.org/10.1117/1.jmi.8.3.033504
Publikováno v:
J Med Imaging (Bellingham)
Purpose: Physiological or pathological variation would cause a change of conductivity. Electrical impedance tomography (EIT) is favorable in reconstructing conductivity distribution inside the detected area. However, the reconstruction is an ill-pose
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ecf5c158f53055d154a9d0045ba8f77d
https://doi.org/10.1117/1.jmi.8.3.033503
https://doi.org/10.1117/1.jmi.8.3.033503
Autor:
Joana Boita, Alistair Mackenzie, Ruben E. van Engen, Mireille J. M. Broeders, Ioannis Sechopoulos
Publikováno v:
Journal of Medical Imaging, 8
Journal of Medical Imaging, 8, 3
J Med Imaging (Bellingham)
Journal of Medical Imaging, 8, 3
J Med Imaging (Bellingham)
Item does not contain fulltext Purpose: To validate a previously proposed algorithm that modifies a mammogram to appear as if it was acquired with different technique factors using realistic phantom-based mammograms. Approach: Two digital mammography
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::994ebd13b150612fcd27122a9a4ab435
https://doi.org/10.1117/1.jmi.8.3.033502
https://doi.org/10.1117/1.jmi.8.3.033502
Autor:
Patricia N. Coan, Narasimhan Rajaram, Nagma Vohra, Tanny Chavez, Joel Rodriguez Troncoso, Magda El-Shenawee, Todd Jackson, Keith Bailey, Jingxian Wu
Publikováno v:
J Med Imaging (Bellingham)
Purpose: The objective of this study is to quantitatively evaluate terahertz (THz) imaging for differentiating cancerous from non-cancerous tissues in mammary tumors developed in response to injection of N-ethyl-N-nitrosourea (ENU) in Sprague Dawley
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3aa0ee54098bafd1904a3aa3bba16116
https://doi.org/10.1117/1.jmi.8.2.023504
https://doi.org/10.1117/1.jmi.8.2.023504
Publikováno v:
J Med Imaging (Bellingham)
Purpose: In sequential imaging studies, there exists rich information from past studies that can be used in prior-image-based reconstruction (PIBR) as a form of improved regularization to yield higher-quality images in subsequent studies. PIBR method
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2254405037ee7fb5f324d356ac295fc9
https://doi.org/10.1117/1.jmi.8.2.023503
https://doi.org/10.1117/1.jmi.8.2.023503
Publikováno v:
J Med Imaging (Bellingham)
Purpose: Flat-panel radiography detectors employ thin-film transistor (TFT) panels to acquire high-quality x-ray images. Pixel defects occur due to circuit shorts or opens in the TFT panel. The defects may degrade the image quality, as well as lower
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f2ccf61f7bc2e056aef6bb1e8d0b20f
https://europepmc.org/articles/PMC7930811/
https://europepmc.org/articles/PMC7930811/
Publikováno v:
J Med Imaging (Bellingham)
Purpose: The focal spot size and shape of an x-ray system are critical factors to the spatial resolution. Conventional approaches to characterizing the focal spot use specialized tools that usually require careful calibration. We propose an alternati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::047dfa409bd05892cc094119c2b7f67d
https://europepmc.org/articles/PMC8330836/
https://europepmc.org/articles/PMC8330836/