Results 41 to 50 of about 1,646,093 (289)

Photon-Counting Detector CT: Key Points Radiologists Should Know

Korean Journal of Radiology, 2022
Photon-counting detector (PCD) CT is a new CT technology utilizing a direct conversion X-ray detector, where incident X-ray photon energies are directly recorded as electronical signals.
Andrea Esquivel, A. Ferrero, A. Mileto, Francis I. Baffour, K. Horst, P. Rajiah, Akitoshi Inoue, S. Leng, C. McCollough, J. Fletcher   +9 more
semanticscholar   +1 more source

CT Angiography of the Aorta Using Photon-counting Detector CT with Reduced Contrast Media Volume.

Radiology: Cardiothoracic Imaging, 2023
Purpose To develop and evaluate a low-volume contrast media protocol for thoracoabdominal CT angiography (CTA) with photon-counting detector (PCD) CT. Materials and Methods This prospective study included consecutive participants (April-September 2021)
K. Higashigaito, Viktor Mergen, M. Eberhard, Lisa Jungblut, M. Hebeisen, Susan Rätzer, B. Zanini, A. Kobe, K. Martini, A. Euler, H. Alkadhi   +10 more
semanticscholar   +1 more source

Subcentimeter depth resolution using a single-photon counting time-of-flight laser ranging system at 1550 nm wavelength [PDF]

, 2007
We demonstrate subcentimeter depth profiling at a stand off distance of 330m using a time-of-flight approach based on time-correlated single-photon counting.
Nam, Sae Woo, Hernandez-Marin, Sergio, Wallace, A.M., Warburton, R.E., McCarthy, Aongus, Nam, S.W., Buller, G.S., Wallace, Andrew M., Warburton, Ryan E., Hadfield, Robert H., Hernandez-Marin, S., Hadfield, R., McCarthy, A., Buller, Gerald S.   +13 more
core   +1 more source

Use of novel photon – counting detector CT for diagnosis of bowel infarction

Radiology Case Reports, 2022
A 75 year old male with a history of thoraco-abdominal surgery presented with acute onset epigastric pain. CT of the abdomen and pelvis with contrast performed on a novel photon-counting detector CT demonstrated dilated loops of small bowel herniating ...
Nicholas H. Shaheen, MD, Maxwell Stroebel, MD, Cynthia Welsh, MD, Barry Gibney, DO, Andrew D. Hardie, MD   +4 more
doaj   +1 more source

Potential of Unenhanced Ultra-Low-Dose Abdominal Photon-Counting CT with Tin Filtration: A Cadaveric Study

Diagnostics, 2023
Objectives: This study investigated the feasibility and image quality of ultra-low-dose unenhanced abdominal CT using photon-counting detector technology and tin prefiltration.
Henner Huflage, Jan-Peter Grunz, Theresa Sophie Patzer, Pauline Pannenbecker, Philipp Feldle, Stephanie Tina Sauer, Bernhard Petritsch, Süleyman Ergün, Thorsten Alexander Bley, Andreas Steven Kunz   +9 more
doaj   +1 more source

Potential of ultra-high-resolution photon-counting CT of bone metastases: initial experiences in breast cancer patients

npj Breast Cancer, 2021
Conventional CT scanners use energy-integrating detectors (EIDs). Photon-counting detector (PCD) computed tomography (CT) utilizes a CT detector technology based on smaller detector pixels capable of counting single photons and in addition discriminating
E. Wehrse, S. Sawall, L. Klein, P. Glemser, S. Delorme, H.-P. Schlemmer, M. Kachelrieß, M. Uhrig, C. H. Ziener, L. T. Rotkopf   +9 more
doaj   +1 more source

Cardiac Virtual Noncontrast Images for Calcium Quantification with Photon-counting Detector CT [PDF]

, 2023
PURPOSE: To assess the accuracy of aortic valve calcium (AVC), mitral annular calcium (MAC), and coronary artery calcium (CAC) quantification and risk stratification using virtual noncontrast (VNC) images from late enhancement photon-counting detector CT
Sartoretti, Thomas; https://orcid.org/, Euler, André; https://orcid.org/, Kasel, Albert M; https://orcid.org/, Ghouse, Sadaf; https://orcid.org/, Alkadhi, Hatem; https://orcid.org/, Manka, Robert; https://orcid.org/, Mergen, Victor; https://orcid.org/, Eberhard, Matthias; https://orcid.org/   +7 more
core   +1 more source

Quantum Iterative Reconstruction for Abdominal Photon-counting Detector CT Improves Image Quality.

Radiology, 2022
Background An iterative reconstruction (IR) algorithm was introduced for clinical photon-counting detector (PCD) CT. Purpose To investigate the image quality and the optimal strength level of a quantum IR algorithm (QIR; Siemens Healthcare) for virtual ...
T. Sartoretti, Anna Landsmann, Dominik Nakhostin, M. Eberhard, Christian Röeren, Viktor Mergen, K. Higashigaito, R. Raupach, H. Alkadhi, A. Euler   +9 more
semanticscholar   +1 more source

Full field-of-view, high-resolution, photon-counting detector CT: Technical assessment and initial patient experience

Physics in Medicine and Biology, 2021
We report a comprehensive evaluation of a full field-of-view (FOV) photon-counting detector (PCD) computed tomography (CT) system using phantoms, and qualitatively assess image quality in patient examples.
K. Rajendran, M. Petersilka, A. Henning, E. Shanblatt, Jeffrey F. Marsh, J. Thorne, B. Schmidt, T. Flohr, J. Fletcher, C. McCollough, S. Leng   +10 more
semanticscholar   +1 more source

Photon Counting CT and Radiomic Analysis Enables Differentiation of Tumors Based on Lymphocyte Burden

Tomography, 2022
The purpose of this study was to investigate if radiomic analysis based on spectral micro-CT with nanoparticle contrast-enhancement can differentiate tumors based on lymphocyte burden.
Alex J. Allphin, Yvonne M. Mowery, Kyle J. Lafata, Darin P. Clark, Alex M. Bassil, Rico Castillo, Diana Odhiambo, Matthew D. Holbrook, Ketan B. Ghaghada, Cristian T. Badea   +9 more
doaj   +1 more source