Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Robert Lapp"'
Autor:
Stefan Sawall, Marc Kachelrieß, Markus Mronz, Robert Lapp, Marek Karolczak, Frank Bergner, Andreas Hess
Publikováno v:
Medical Physics. 38:1416-1424
Purpose: Micro-CT imaging of animal hearts typically requires a double gating procedure because scans during a breath-hold are not possible due to the long scan times and the high respiratory rates. Simultaneous respiratory and cardiac gating can eit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3064bebaeb999cb4ac4743ac17e1a5ba
https://doi.org/10.1118/1.3551993
https://doi.org/10.1118/1.3551993
Publikováno v:
Physics in Medicine and Biology. 54:3837-3846
We provide a dedicated phase-correlated imaging procedure for respiratory gating in micro-CT imaging with automatic detection of the optimal data window providing the least amount of motion blurring. A rawdata-based motion function (kymogram) was use
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e22c6040b67a420dc9a2b623b678a52f
https://doi.org/10.1088/0031-9155/54/12/015
https://doi.org/10.1088/0031-9155/54/12/015
Publikováno v:
The British Journal of Radiology. 82:235-242
The objective of this work was to reduce motion artefacts in non-gated dual-energy subtraction radiography whilst preserving the contrast-to-noise ratio (CNR) in regions with low motion. Dual-energy radiography provides material-selective information
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe6cce3443714861d54464789e83c761
https://doi.org/10.1259/bjr/24287373
https://doi.org/10.1259/bjr/24287373
Autor:
Marek Karolczak, Willi A. Kalender, Marc Kachelrieß, Michael Knaup, Robert Lapp, Clemens Maas
Publikováno v:
Medical Physics. 35:5898-5909
The size of the field of measurement (FOM) in computed tomography is limited by the size of the x-ray detector. In general, the detector is mounted symmetrically with respect to the rotation axis such that the transaxial FOM diameter approximately eq
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::497daf7f64160643891d8376c3c331dc
https://doi.org/10.1118/1.3013700
https://doi.org/10.1118/1.3013700
Publikováno v:
European Romantic Review. 9:124-147
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39294b8e3336c560b915579c60ccbf06
https://doi.org/10.1080/10509589808570042
https://doi.org/10.1080/10509589808570042
Autor:
Stefan, Sawall, Frank, Bergner, Robert, Lapp, Markus, Mronz, Marek, Karolczak, Andreas, Hess, Marc, Kachelriess
Publikováno v:
Medical physics. 38(3)
Micro-CT imaging of animal hearts typically requires a double gating procedure because scans during a breath-hold are not possible due to the long scan times and the high respiratory rates, Simultaneous respiratory and cardiac gating can either be do
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::9ce8e1fad205234593d588814c32a84f
https://pubmed.ncbi.nlm.nih.gov/21520853
https://pubmed.ncbi.nlm.nih.gov/21520853
Autor:
Marek Karolczak, Stefan Sawall, Frank Bergner, Marc Kachelriess, Markus Mronz, Robert Lapp, Andreas Hess
Publikováno v:
SPIE Proceedings.
Functional imaging of an animals thoracic region requires cardiac and respiratory gating. The information on respiratory motion and ECG required for double-gating are extracted from the rawdata and used to select the projections appropriate for a giv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e0f11e11654c16a636a336d89e98274
https://doi.org/10.1117/12.877343
https://doi.org/10.1117/12.877343
Autor:
Markus Mronz, Frank Bergner, Marek Karolczak, Andreas Hess, Stefan Sawall, Robert Lapp, Marc Kachelrieß
Publikováno v:
IEEE Nuclear Science Symposuim & Medical Imaging Conference.
DOUBLE-gated in-vivo small animal cone-beam micro-CT scans provide five-dimensional information about the object: the three volume dimensions plus the temporal dimensions of the respiratory motion and the heart motion, respectively. Double gating is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::343c31b46bfc8ed7bb2cc11530559526
https://doi.org/10.1109/nssmic.2010.5874136
https://doi.org/10.1109/nssmic.2010.5874136
Publikováno v:
SPIE Proceedings.
Typical cupping correction methods are pre processing methods which require either pre-calibration measure-ments or simulations of standard objects to approximate and correct for beam hardening and scatter. Someof them require the knowledge of spectr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::30f3be2c0583ec3ab403c00204bce6bf
https://doi.org/10.1117/12.844206
https://doi.org/10.1117/12.844206
Publikováno v:
SPIE Proceedings.
We offer a novel approach for real-time CT reconstruction with the possibility of interactively changing parameters like the position and orientation of the slice to arbitrary values by the user during the analysis. To achieve this, a new reconstruct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::761af1722e7b2a2a98ba4e48fb83754a
https://doi.org/10.1117/12.812213
https://doi.org/10.1117/12.812213