Now showing items 1-7 of 7

    • A neural network-based method for spectral distortion correction in photon counting x-ray CT. 

      Badea, Cristian Tudorel; Barber, William; Clark, Darin P; Touch, Mengheng (Physics in medicine and biology, 2016-08)
      Spectral CT using a photon counting x-ray detector (PCXD) shows great potential for measuring material composition based on energy dependent x-ray attenuation. Spectral CT is especially suited for imaging with K-edge contrast ...
    • An automated method for comparing motion artifacts in cine four-dimensional computed tomography images. 

      Hong, Julian; Cui, Guoqiang; Jew, Brian; Johnston, Eric W; Loo, Billy W; Maxim, Peter G (Journal of applied clinical medical physics, 2012-11-08)
      The aim of this study is to develop an automated method to objectively compare motion artifacts in two four-dimensional computed tomography (4D CT) image sets, and identify the one that would appear to human observers with ...
    • Dual-energy computed tomography with advanced postimage acquisition data processing: improved determination of urinary stone composition. 

      Ferrandino, MN; Pierre, SA; Simmons, WN; Paulson, EK; Albala, DM; Preminger, GM (J Endourol, 2010-03)
      INTRODUCTION: The characterization of urinary calculi using noninvasive methods has the potential to affect clinical management. CT remains the gold standard for diagnosis of urinary calculi, but has not reliably differentiated ...
    • Hybrid spectral CT reconstruction. 

      Badea, Cristian Tudorel; Clark, Darin P (PLoS One, 2017)
      Current photon counting x-ray detector (PCD) technology faces limitations associated with spectral fidelity and photon starvation. One strategy for addressing these limitations is to supplement PCD data with high-resolution, ...
    • Impact of beta-blockade premedication on image quality of ECG-gated thoracic aorta CT angiography. 

      Chalian, Hamid; Entezari, Pegah; Collins, Jeremy; Tore, Huseyin Gurkan; Carr, James; Yaghmai, Vahid (Acta radiologica (Stockholm, Sweden : 1987), 2014-12)
      BACKGROUND: Thoracic aortic aneurysm is one of the most common aorta pathologies worldwide, which is commonly evaluated by computed tomography angiography (CTA). One of the routine methods to improve the image quality of ...
    • Optimization of reduced-dose MDCT of thoracic aorta using iterative reconstruction. 

      Chalian, Hamid; Töre, Hüseyin Gürkan; Entezari, Pegah; Gonzalez-Guindalini, Fernanda Dias; Botelho, Marcos Paulo Ferreira; Yaghmai, Vahid (Journal of computer assisted tomography, 2014-01)
      OBJECTIVE: To evaluate the contribution of iterative reconstruction on image quality of reduced-dose multidetector computed tomography of the thoracic aorta. METHODS: A torso phantom was scanned using two tube potentials ...
    • Spectrotemporal CT data acquisition and reconstruction at low dose. 

      Badea, CT; Clark, Darin P; Kirsch, David Guy; Lee, CL (Med Phys, 2015-11)
      PURPOSE: X-ray computed tomography (CT) is widely used, both clinically and preclinically, for fast, high-resolution anatomic imaging; however, compelling opportunities exist to expand its use in functional imaging applications. ...