Matches in SemOpenAlex for { <https://semopenalex.org/work/W2323034095> ?p ?o ?g. }
Showing items 1 to 76 of
76
with 100 items per page.
- W2323034095 endingPage "569" @default.
- W2323034095 startingPage "564" @default.
- W2323034095 abstract "The Human Monitoring Laboratory (Canada) has looked at parameters (lung volume, lung deposition pattern, etc.) that can affect the counting efficiency of its lung counting system. The calibration of the system is performed using the Lawrence Livermore National Laboratory (LLNL) torso phantom; however, the effect of respiratory motion cannot be accounted for using these phantoms. When measuring an internal deposition in the lungs of a subject, respiration causes a change in the volume of the lungs and the thoracic cavity and introduces a variable distance between the lungs and the detectors. These changes may have an impact on the counting efficiency and may need to be considered during a measurement. In this study, the HML has simulated the respiration motion using a 4D non-uniform rational b-spline (NURBS)-based Cardiac-Torso (NCAT) phantom and determined the impact of that motion on the counting efficiency of their lung counting system during measurement. The respiratory motion was simulated by a 16 timeframe cycled 4D NURBS-based NCAT phantom developed at the Department of Biomedical Engineering and Radiology, University of North Carolina. The counting efficiency of the four germanium detectors comprising the HML lung counting system was obtained using MCNPX version 2.6E for photon energies between 17 and 1,000 keV. The amount of uncertainty due to the breathing motion was estimated by looking at the efficiency bias, which was highest at low photon energies as expected due to attenuation and geometry effects. Also, to reduce the influence of the detectors’ positioning, an array was calculated by adding the individual detector tallies for a given energy and timeframe. For photon energies of 40 keV and higher, the array efficiency bias showed an underestimation of about 5%. If compared to other parameters already studied by the HML, this value demonstrates the insignificant impact of the breathing motion." @default.
- W2323034095 created "2016-06-24" @default.
- W2323034095 creator A5042833803 @default.
- W2323034095 creator A5043138140 @default.
- W2323034095 creator A5050617824 @default.
- W2323034095 creator A5091501068 @default.
- W2323034095 date "2014-12-01" @default.
- W2323034095 modified "2023-09-23" @default.
- W2323034095 title "Effect of Respiratory Motion on Lung Counting Efficiency Using a 4D NURBS-Based Cardio-Torso (NCAT) Phantom" @default.
- W2323034095 cites W1964633277 @default.
- W2323034095 cites W1980828058 @default.
- W2323034095 cites W1984179429 @default.
- W2323034095 cites W2004795955 @default.
- W2323034095 cites W2042077500 @default.
- W2323034095 cites W2109146178 @default.
- W2323034095 cites W2163933728 @default.
- W2323034095 cites W2325845526 @default.
- W2323034095 cites W4247550241 @default.
- W2323034095 doi "https://doi.org/10.1097/hp.0000000000000156" @default.
- W2323034095 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/25353242" @default.
- W2323034095 hasPublicationYear "2014" @default.
- W2323034095 type Work @default.
- W2323034095 sameAs 2323034095 @default.
- W2323034095 citedByCount "3" @default.
- W2323034095 countsByYear W23230340952014 @default.
- W2323034095 countsByYear W23230340952015 @default.
- W2323034095 countsByYear W23230340952021 @default.
- W2323034095 crossrefType "journal-article" @default.
- W2323034095 hasAuthorship W2323034095A5042833803 @default.
- W2323034095 hasAuthorship W2323034095A5043138140 @default.
- W2323034095 hasAuthorship W2323034095A5050617824 @default.
- W2323034095 hasAuthorship W2323034095A5091501068 @default.
- W2323034095 hasConcept C104293457 @default.
- W2323034095 hasConcept C105702510 @default.
- W2323034095 hasConcept C120665830 @default.
- W2323034095 hasConcept C121332964 @default.
- W2323034095 hasConcept C136229726 @default.
- W2323034095 hasConcept C2779498123 @default.
- W2323034095 hasConcept C2781402376 @default.
- W2323034095 hasConcept C2989005 @default.
- W2323034095 hasConcept C523889960 @default.
- W2323034095 hasConcept C71924100 @default.
- W2323034095 hasConcept C94915269 @default.
- W2323034095 hasConceptScore W2323034095C104293457 @default.
- W2323034095 hasConceptScore W2323034095C105702510 @default.
- W2323034095 hasConceptScore W2323034095C120665830 @default.
- W2323034095 hasConceptScore W2323034095C121332964 @default.
- W2323034095 hasConceptScore W2323034095C136229726 @default.
- W2323034095 hasConceptScore W2323034095C2779498123 @default.
- W2323034095 hasConceptScore W2323034095C2781402376 @default.
- W2323034095 hasConceptScore W2323034095C2989005 @default.
- W2323034095 hasConceptScore W2323034095C523889960 @default.
- W2323034095 hasConceptScore W2323034095C71924100 @default.
- W2323034095 hasConceptScore W2323034095C94915269 @default.
- W2323034095 hasIssue "6" @default.
- W2323034095 hasLocation W23230340951 @default.
- W2323034095 hasLocation W23230340952 @default.
- W2323034095 hasOpenAccess W2323034095 @default.
- W2323034095 hasPrimaryLocation W23230340951 @default.
- W2323034095 hasRelatedWork W192983812 @default.
- W2323034095 hasRelatedWork W2021815119 @default.
- W2323034095 hasRelatedWork W2125644980 @default.
- W2323034095 hasRelatedWork W2281736115 @default.
- W2323034095 hasRelatedWork W2281946547 @default.
- W2323034095 hasRelatedWork W2323034095 @default.
- W2323034095 hasRelatedWork W2333283854 @default.
- W2323034095 hasRelatedWork W3096868187 @default.
- W2323034095 hasRelatedWork W4360612530 @default.
- W2323034095 hasRelatedWork W2185455182 @default.
- W2323034095 hasVolume "107" @default.
- W2323034095 isParatext "false" @default.
- W2323034095 isRetracted "false" @default.
- W2323034095 magId "2323034095" @default.
- W2323034095 workType "article" @default.