Matches in SemOpenAlex for { <https://semopenalex.org/work/W4220916053> ?p ?o ?g. }
- W4220916053 endingPage "29" @default.
- W4220916053 startingPage "22" @default.
- W4220916053 abstract "Aim: Computational fitting methods were investigated to determine the most accurate fitting approach for the calculation of dynamic hyperpolarized MRI parameters.
 Materials and Methods: The signal decay of a time-series Hyperpolarized xenon gas MRI phantom was fitted to Bloch equations using three methods varying the fitting parameters for calculation of flip angle, α, and longitudinal relaxation time, T1. The first fitting method used an initial calculation of α before the fitting process. The second and third techniques used direct fitting of signal decay equations with and without upper-lower boundaries for calculation of α, and T1. Wilcoxon signed-rank test was used to investigate the statistical significance of the calculated parameters.
 Results: The first approach was the most accurate fitting technique that allowed direct calculation of α=8.65° in agreement to the third approach α=8.73±0.78°, 8.75±0.12°, 8.67±0.05°. Additionally, the standard deviation of the calculated T1 was lower than 1% (T1=103.2±0.04s) which was significantly more accurate than the second method (T1=90±30.2s and 135.7±10.3s) and the third method (T1=101.4±5.1s and 113.5±16.1s).
 Conclusion: The first technique provides repeatable and reliable calculation of signal decay parameters including α and T1 from the dynamic hyperpolarized gas MR images and more accurate than direct fitting methods." @default.
- W4220916053 created "2022-04-03" @default.
- W4220916053 creator A5028480726 @default.
- W4220916053 date "2022-03-15" @default.
- W4220916053 modified "2023-09-27" @default.
- W4220916053 title "Computational investigation of fitting for calculation of signal dynamics from hyperpolarized xenon-129 Gas MRI" @default.
- W4220916053 cites W130888682 @default.
- W4220916053 cites W1582985427 @default.
- W4220916053 cites W1942862135 @default.
- W4220916053 cites W1993703052 @default.
- W4220916053 cites W2008316025 @default.
- W4220916053 cites W2013849283 @default.
- W4220916053 cites W2020646942 @default.
- W4220916053 cites W2021462174 @default.
- W4220916053 cites W2022063859 @default.
- W4220916053 cites W2022452725 @default.
- W4220916053 cites W2051386191 @default.
- W4220916053 cites W2052257189 @default.
- W4220916053 cites W2052691853 @default.
- W4220916053 cites W2083768807 @default.
- W4220916053 cites W2094799875 @default.
- W4220916053 cites W2101774445 @default.
- W4220916053 cites W2130274802 @default.
- W4220916053 cites W2130709744 @default.
- W4220916053 cites W2149707004 @default.
- W4220916053 cites W2349568300 @default.
- W4220916053 cites W2520034886 @default.
- W4220916053 cites W2530002365 @default.
- W4220916053 cites W2755942465 @default.
- W4220916053 cites W2791325680 @default.
- W4220916053 cites W2805471073 @default.
- W4220916053 cites W2885971834 @default.
- W4220916053 cites W2895834572 @default.
- W4220916053 cites W2896042736 @default.
- W4220916053 cites W2898357610 @default.
- W4220916053 cites W2900522156 @default.
- W4220916053 cites W2903257336 @default.
- W4220916053 cites W2903910095 @default.
- W4220916053 cites W2920774249 @default.
- W4220916053 cites W2972292995 @default.
- W4220916053 cites W3110895194 @default.
- W4220916053 cites W3111599233 @default.
- W4220916053 cites W332790685 @default.
- W4220916053 cites W2766277706 @default.
- W4220916053 doi "https://doi.org/10.19161/etd.1085607" @default.
- W4220916053 hasPublicationYear "2022" @default.
- W4220916053 type Work @default.
- W4220916053 citedByCount "0" @default.
- W4220916053 crossrefType "journal-article" @default.
- W4220916053 hasAuthorship W4220916053A5028480726 @default.
- W4220916053 hasBestOaLocation W42209160532 @default.
- W4220916053 hasConcept C104293457 @default.
- W4220916053 hasConcept C105795698 @default.
- W4220916053 hasConcept C120665830 @default.
- W4220916053 hasConcept C121332964 @default.
- W4220916053 hasConcept C126838900 @default.
- W4220916053 hasConcept C12868164 @default.
- W4220916053 hasConcept C143409427 @default.
- W4220916053 hasConcept C15744967 @default.
- W4220916053 hasConcept C184389593 @default.
- W4220916053 hasConcept C184779094 @default.
- W4220916053 hasConcept C199360897 @default.
- W4220916053 hasConcept C206041023 @default.
- W4220916053 hasConcept C2776029896 @default.
- W4220916053 hasConcept C2779843651 @default.
- W4220916053 hasConcept C28396438 @default.
- W4220916053 hasConcept C30475298 @default.
- W4220916053 hasConcept C33923547 @default.
- W4220916053 hasConcept C41008148 @default.
- W4220916053 hasConcept C46141821 @default.
- W4220916053 hasConcept C548442186 @default.
- W4220916053 hasConcept C71924100 @default.
- W4220916053 hasConcept C77805123 @default.
- W4220916053 hasConceptScore W4220916053C104293457 @default.
- W4220916053 hasConceptScore W4220916053C105795698 @default.
- W4220916053 hasConceptScore W4220916053C120665830 @default.
- W4220916053 hasConceptScore W4220916053C121332964 @default.
- W4220916053 hasConceptScore W4220916053C126838900 @default.
- W4220916053 hasConceptScore W4220916053C12868164 @default.
- W4220916053 hasConceptScore W4220916053C143409427 @default.
- W4220916053 hasConceptScore W4220916053C15744967 @default.
- W4220916053 hasConceptScore W4220916053C184389593 @default.
- W4220916053 hasConceptScore W4220916053C184779094 @default.
- W4220916053 hasConceptScore W4220916053C199360897 @default.
- W4220916053 hasConceptScore W4220916053C206041023 @default.
- W4220916053 hasConceptScore W4220916053C2776029896 @default.
- W4220916053 hasConceptScore W4220916053C2779843651 @default.
- W4220916053 hasConceptScore W4220916053C28396438 @default.
- W4220916053 hasConceptScore W4220916053C30475298 @default.
- W4220916053 hasConceptScore W4220916053C33923547 @default.
- W4220916053 hasConceptScore W4220916053C41008148 @default.
- W4220916053 hasConceptScore W4220916053C46141821 @default.
- W4220916053 hasConceptScore W4220916053C548442186 @default.
- W4220916053 hasConceptScore W4220916053C71924100 @default.
- W4220916053 hasConceptScore W4220916053C77805123 @default.
- W4220916053 hasIssue "1" @default.
- W4220916053 hasLocation W42209160531 @default.
- W4220916053 hasLocation W42209160532 @default.