Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Mikael A K, Juntunen"'
Publikováno v:
Radiation Protection Dosimetry. 198:229-237
The aim of this study was to evaluate how out-of-plane patient shielding affects radiation exposure parameters and tube current modulation on different vendors’ computed tomography (CT) scanners. Helical CT scans were performed using two homogenous
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ad858e7ab3e1db4e8274ad8120d4198
https://doi.org/10.1093/rpd/ncac032
https://doi.org/10.1093/rpd/ncac032
Autor:
Juuso H J, Ketola, Helinä, Heino, Mikael A K, Juntunen, Miika T, Nieminen, Samuli, Siltanen, Satu I, Inkinen
Publikováno v:
Biomedical physicsengineering express. 7(6)
In interior computed tomography (CT), the x-ray beam is collimated to a limited field-of-view (FOV) (e.g. the volume of the heart) to decrease exposure to adjacent organs, but the resulting image has a severe truncation artifact when reconstructed wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::28b51d181a9fbef046c348b589b923a2
https://pubmed.ncbi.nlm.nih.gov/34673559
https://pubmed.ncbi.nlm.nih.gov/34673559
Autor:
Satu I, Inkinen, Mikael A K, Juntunen, Juuso, Ketola, Kristiina, Korhonen, Pasi, Sepponen, Antti, Kotiaho, Vesa-Matti, Pohjanen, Miika, Nieminen
Publikováno v:
Biomedical physicsengineering express. 8(1)
In interior cardiac computed tomography (CT) imaging, the x-ray beam is collimated to a limited field-of-view covering the heart volume, which decreases the radiation exposure to surrounding tissues. Spectral CT enables the creation of virtual monoch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::b01a52bd19c417ea89ef3be693560fc2
https://pubmed.ncbi.nlm.nih.gov/34911047
https://pubmed.ncbi.nlm.nih.gov/34911047
Publikováno v:
Medical Imaging 2021: Physics of Medical Imaging.
X-ray computed tomography (CT) is widely used in diagnostic imaging. Due to the growing number of CT scans worldwide, the consequent increase in populational dose is of concern. Therefore, strategies for dose reduction are investigated. One strategy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::04ca76e0e72f1be304c2e7a583bb996c
https://doi.org/10.1117/12.2580886
https://doi.org/10.1117/12.2580886
Publikováno v:
Biomedical Physics & Engineering Express. 8:037002
Purpose. The radiology department faces a large number of reconstruction algorithms and kernels during their computed tomography (CT) optimization process. These reconstruction methods are proprietary and ensuring consistent image quality between sca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42725f3ee717370e66185360e3acbe51
https://doi.org/10.1088/2057-1976/ac605b
https://doi.org/10.1088/2057-1976/ac605b
Autor:
Alexander Winkler, Matti Kauppinen, Satu I. Inkinen, Mikael A. K. Juntunen, Juuso H. Ketola, Miika T. Nieminen, Antti Kotiaho
Publikováno v:
IEEE transactions on medical imaging. 39(1)
In this paper, the accuracy of material decomposition (MD) using an energy discriminating photon counting detector was studied. An MD framework was established and validated using calcium hydroxyapatite (CaHA) inserts of known densities (50 mg/cm3, 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3da5b8cdfba11bb4c5e047d7cc8b661
https://pubmed.ncbi.nlm.nih.gov/31144630
https://pubmed.ncbi.nlm.nih.gov/31144630
Publikováno v:
Journal of Instrumentation. 15:T08005-T08005
The aim of this study is to compare how different calibration methods influence the image quality of photon-counting detector computed tomography (PCD-CT) at high and low photon fluxes. We investigate the performance of flat-field correction, signal-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::939a9d26eadbedd37372c6e0e214c2a1
https://doi.org/10.1088/1748-0221/15/08/t08005
https://doi.org/10.1088/1748-0221/15/08/t08005
Autor:
Pasi Sepponen, Juuso H. Ketola, Antti Kotiaho, Kristiina Korhonen, Vesa-Matti Pohjanen, Miika T. Nieminen, Mikael A K Juntunen, Satu I. Inkinen
Publikováno v:
Biomedical Physics & Engineering Express. 6:055011
Computed tomography (CT) is the reference method for cardiac imaging, but concerns have been raised regarding the radiation dose of CT examinations. Recently, photon counting detectors (PCDs) and interior tomography, in which the radiation beam is li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b70c7e0c959f19b0b3388a94330ffc92
https://doi.org/10.1088/2057-1976/aba133
https://doi.org/10.1088/2057-1976/aba133