{"id":7969,"date":"2022-09-05T14:17:02","date_gmt":"2022-09-05T12:17:02","guid":{"rendered":"https:\/\/alara-group.fr\/?p=7969"},"modified":"2023-12-07T14:29:40","modified_gmt":"2023-12-07T13:29:40","slug":"publikation-der-einfluss-von-beschleunigungsfaktoren-in-der-4dfluss-mrt","status":"publish","type":"post","link":"https:\/\/alara-group.fr\/de\/publikation-der-einfluss-von-beschleunigungsfaktoren-in-der-4dfluss-mrt\/","title":{"rendered":"[PUBLIKATION] Der Einfluss von Beschleunigungsfaktoren in der 4D-Fluss-MRT"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"7969\" class=\"elementor elementor-7969 elementor-7968\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-c62b14a elementor-section-height-min-height elementor-section-boxed elementor-section-height-default elementor-section-items-middle\" data-id=\"c62b14a\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-3c90580\" data-id=\"3c90580\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3b8a972 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3b8a972\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f7aa4fb\" data-id=\"f7aa4fb\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-69fc6f4 elementor-align-left elementor-widget elementor-widget-post-info\" data-id=\"69fc6f4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"post-info.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-inline-items elementor-icon-list-items elementor-post-info\">\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-5eb95cd elementor-inline-item\" itemprop=\"about\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-terms\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-post-info__terms-list\">\n\t\t\t\t<a href=\"https:\/\/alara-group.fr\/de\/category\/publikation\/\" class=\"elementor-post-info__terms-list-item\">Publikation<\/a>\t\t\t\t<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3c948f4 elementor-widget elementor-widget-elementskit-heading\" data-id=\"3c948f4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"elementskit-heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"ekit-wid-con\" ><div class=\"ekit-heading elementskit-section-title-wraper text_left   ekit_heading_tablet-   ekit_heading_mobile-\"><h2 class=\"ekit-heading--title elementskit-section-title \">[PUBLICATION] 61. Wissenschaftstagung der SFPM<\/h2><div class=\"ekit_heading_separetor_wraper ekit_heading_elementskit-border-divider ekit-dotted\"><div class=\"elementskit-border-divider ekit-dotted\"><\/div><\/div><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e0991b0 elementor-widget elementor-widget-text-editor\" data-id=\"e0991b0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Originaltitel:<\/strong> &#8220;Accelerated sequences of 4D flow MRI using GRAPPA and compressed sensing:<br \/>A comparison against conventional MRI and computational fluid dynamics&#8221; online ver\u00f6ffentlicht in<br \/>August 2022 in der Zeitschrift &#8220;Magnetic Resonance in Medicine&#8221; ver\u00f6ffentlicht. \u25b8<span style=\"text-decoration: underline;\"><span style=\"color: #3366ff;\"><a style=\"color: #3366ff; text-decoration: underline;\" href=\"https:\/\/doi.org\/10.1002\/mrm.29404\">https:\/\/doi.org\/10.1002\/mrm.29404<\/a><\/span><\/span><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3a01727 elementor-widget elementor-widget-heading\" data-id=\"3a01727\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Interesse an der Studie<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5d0b6b8 elementor-widget elementor-widget-text-editor\" data-id=\"5d0b6b8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tDie sogenannten 4D-Fluss-MRI-Sequenzen (4D flow MRI) erm\u00f6glichen eine Abbildung der\nGeschwindigkeit des Blutflusses, und zwar sowohl innerhalb eines bestimmten Volumens als auch im Verlauf des Zyklus\nHerz [1]. Diese vielversprechende Technik erm\u00f6glicht einen nicht-invasiven Zugang zu\nh\u00e4modynamische Biomarker wie Flow, Maximalgeschwindigkeiten oder auch\nabgeleitete Parameter (z. B. parietale Reibung, kinetische Energie der Turbulenz). Jedoch,\nDie klinische Anwendung der 4D-Fluss-MRT ist aufgrund der langen Dauer ihrer Anwendung noch nicht sehr weit entwickelt.\nAkquisitionen. Es wurden verschiedene Techniken entwickelt, um die Erfassungszeit zu beschleunigen:\nparalleles Imaging (z. B. GRAPPA, SENSE) oder in j\u00fcngerer Zeit Compressed Sensing [2,3].\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c7f234d elementor-widget elementor-widget-text-editor\" data-id=\"c7f234d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tDas Hauptziel dieser Studie ist es, die Messfehler zu untersuchen, die durch die\nBeschleunigungen vom Typ GRAPPA und Compressed Sensing zur Charakterisierung von Str\u00f6mungen\ndie durch 4D-Fluss-MRI in einer gut kontrollierten Umgebung mit Strukturen erhalten wurden\nkomplexen Str\u00f6mungsmustern, die typisch f\u00fcr die im Herz-Kreislauf-System beobachteten sind.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-87a376d elementor-widget elementor-widget-heading\" data-id=\"87a376d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Methode<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-584874b elementor-widget elementor-widget-image\" data-id=\"584874b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"936\" height=\"550\" src=\"https:\/\/alara-group.fr\/wp-content\/uploads\/2022\/09\/Image1.png\" class=\"attachment-large size-large wp-image-7976\" alt=\"\u00ab\u00a0Accelerated sequences of 4D flow MRI\" srcset=\"https:\/\/alara-group.fr\/wp-content\/uploads\/2022\/09\/Image1.png 936w, https:\/\/alara-group.fr\/wp-content\/uploads\/2022\/09\/Image1-300x176.png 300w, https:\/\/alara-group.fr\/wp-content\/uploads\/2022\/09\/Image1-768x451.png 768w\" sizes=\"100vw\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-926ba85 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"926ba85\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-dot-circle\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119.033 8 8 119.033 8 256s111.033 248 248 248 248-111.033 248-248S392.967 8 256 8zm80 248c0 44.112-35.888 80-80 80s-80-35.888-80-80 35.888-80 80-80 80 35.888 80 80z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Testobjekt (Phantom) mit starrer Wand [4], das von einer programmierbaren Pumpe mit einem pulsierenden Strom versorgt wird (siehe nebenstehendes Schema).<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-dot-circle\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119.033 8 8 119.033 8 256s111.033 248 248 248 248-111.033 248-248S392.967 8 256 8zm80 248c0 44.112-35.888 80-80 80s-80-35.888-80-80 35.888-80 80-80 80 35.888 80 80z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Akquisitionen an einem 1,5 Tesla MRT-Scanner (MAGNETOM Sola, Siemens Healthcare, Erlangen, Germany)<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6962853 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"6962853\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-circle\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm0 448c-110.5 0-200-89.5-200-200S145.5 56 256 56s200 89.5 200 200-89.5 200-200 200z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">1 nicht-beschleunigte Erfassung (fully sampled, FS) - Dauer 43 Minuten<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-circle\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm0 448c-110.5 0-200-89.5-200-200S145.5 56 256 56s200 89.5 200 200-89.5 200-200 200z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">3 GRAPPA-Erfassungen, beschleunigt um den Faktor 2, 3 und 4 - Dauer 21, 15 bzw. 11 Minuten<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-circle\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm0 448c-110.5 0-200-89.5-200-200S145.5 56 256 56s200 89.5 200 200-89.5 200-200 200z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">1 Compressed Sensing (CS) Akquisition, beschleunigt um den Faktor 7.6 - Dauer 6 Min.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-46de86f elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"46de86f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-dot-circle\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119.033 8 8 119.033 8 256s111.033 248 248 248 248-111.033 248-248S392.967 8 256 8zm80 248c0 44.112-35.888 80-80 80s-80-35.888-80-80 35.888-80 80-80 80 35.888 80 80z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Rekonstruktion von 20 Herzphasen (25 f\u00fcr CS)<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-dot-circle\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119.033 8 8 119.033 8 256s111.033 248 248 248 248-111.033 248-248S392.967 8 256 8zm80 248c0 44.112-35.888 80-80 80s-80-35.888-80-80 35.888-80 80-80 80 35.888 80 80z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Simulationen mit Numerischer Str\u00f6mungsmechanik (NFM) [5], wobei als Eingabe die aus den verschiedenen 4D-Fluss-MRT-Akquisitionen erhaltene Flussrate vorgegeben wird.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-81a9f5a elementor-widget elementor-widget-text-editor\" data-id=\"81a9f5a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tDie MRI-Akquisitionen und NFM-Simulationen wurden anschlie\u00dfend nachbearbeitet, um ihre\nVergleich nach den Empfehlungen von Puiseux et al. 2019 [4]. Zum Vergleich der\nverschiedenen Modalit\u00e4ten wurden die folgenden Mengen gesch\u00e4tzt:\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4014dca elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"4014dca\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"icon icon-right-arrow1\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Vergleich der Voxel-zu-Voxel-Geschwindigkeit (Voxel = 3D-Raumpunkt des MRI-Bildes)<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"icon icon-right-arrow1\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Geschwindigkeitsprofile<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"icon icon-right-arrow1\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Durchsatz<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"icon icon-right-arrow1\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Maximale Geschwindigkeiten<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-37ef566 elementor-widget elementor-widget-heading\" data-id=\"37ef566\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Ergebnisse<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-29f1903 elementor-widget elementor-widget-image\" data-id=\"29f1903\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"950\" height=\"576\" src=\"https:\/\/alara-group.fr\/wp-content\/uploads\/2022\/09\/Image1-1-1024x621.png\" class=\"attachment-large size-large wp-image-7984\" alt=\"\u00ab\u00a0Accelerated sequences of 4D flow MRI 2\" srcset=\"https:\/\/alara-group.fr\/wp-content\/uploads\/2022\/09\/Image1-1-1024x621.png 1024w, https:\/\/alara-group.fr\/wp-content\/uploads\/2022\/09\/Image1-1-300x182.png 300w, https:\/\/alara-group.fr\/wp-content\/uploads\/2022\/09\/Image1-1-768x466.png 768w, https:\/\/alara-group.fr\/wp-content\/uploads\/2022\/09\/Image1-1.png 1430w\" sizes=\"100vw\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-13630f6 elementor-widget elementor-widget-text-editor\" data-id=\"13630f6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tQualitativ wurden \u00e4hnliche h\u00e4modynamische Muster bei allen\nModalit\u00e4ten. Im nebenstehenden Video wird die unbeschleunigte Erfassung (4D FLOW FS) mit der\nNFM-Simulation (CFD_HR), und auf die gleiche unterresolvierte Simulation, um mit den\nVoxel aus dem MRI (CFD_LR).\nQuantitativ wurde festgestellt, dass :\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d2be2ce elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"d2be2ce\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"icon icon-right-arrow1\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Die Voxel in der N\u00e4he der Geisterw\u00e4nde weisen die meisten Unterschiede zwischen den Modalit\u00e4ten auf<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"icon icon-right-arrow1\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Im Vergleich zu NFM sind die Geschwindigkeitsprofile und H\u00f6chstgeschwindigkeiten in den Bereichen, die mit hohen Geschwindigkeiten und\/oder Beschleunigungen verbunden sind, tendenziell h\u00f6her.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"icon icon-right-arrow1\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Die Korrektur von Wirbelstr\u00f6men in MRT-Bildern erscheint wesentlich, um konsistente Datenraten im Hinblick auf die Erhaltung der Masse zu gew\u00e4hrleisten.<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8738ea9 elementor-widget elementor-widget-heading\" data-id=\"8738ea9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Schlussfolgerung<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d286c4c elementor-widget elementor-widget-text-editor\" data-id=\"d286c4c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\tDiese Studie zeigt, dass die hochgradig beschleunigte Compressed-Sensing-Akquisition Folgendes erm\u00f6glicht\nin vitro Ergebnisse zu erzielen, die denen einer nicht-beschleunigten Sequenz sehr \u00e4hnlich sind\noder mit herk\u00f6mmlichen GRAPPA-\u00e4hnlichen Beschleunigungen (Faktoren 2 oder 3). Allerdings ist er\ngibt es Artefakte, die dem Akquisitionsverfahren der 4D-Fluss-MRT inh\u00e4rent sind: Artefakte von\nRaum- und Geschwindigkeitsverschiebung, intravoxeliale Phasenverschiebung, Teilvolumeneffekte&#8230; Obwohl sie\nauch Einschr\u00e4nkungen aufweist, scheint die NFM ein Werkzeug zu sein, um Folgendes zu untersuchen\ndie festgestellten Abweichungen.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e75b27e elementor-widget elementor-widget-text-editor\" data-id=\"e75b27e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t[1] Markl M, Frydrychowicz A, Kozerke S, Hope M, Wieben O. 4D flow MRI. J Magn Reson\nImaging. 2012;36(5):1015-1036. doi:10.1002\/jmri.23632<br>\n[2] Ma LE, Markl M, Chow K, et al. Aortic 4D flow MRI in 2 Minuten unter Verwendung von compressed sensing,\nrespiratory controlled adaptive k-space reordering, and inline reconstruction. Magn ResonMed.\n2019;81:3675-3690.<br>\n[3] Pathrose A, Ma L, Berhane H, et al. Highly accelerated aortic 4D flow MRI using compressed\nsensing: performance at different acceleration factors in patients with aortic disease. Magn\nReson Med. 2020;85:2174-2187.<br>\n[4] Puiseux T, Sewonu A, Meyrignac O, et al. Reconciling PC-MRI and CFD: An in-vitro study.\nNMR Biomed. 2019;32(5):e4063.<br>\n[5] YALES2BIO, ( https:\/\/imag.umontpellier.fr\/~yales2bio\/ )\n<br><br>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0956250 elementor-widget elementor-widget-heading\" data-id=\"0956250\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Diesen Artikel teilen<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0e637a3 elementor-grid-2 elementor-share-buttons--skin-flat elementor-share-buttons--shape-circle elementor-grid-mobile-1 elementor-share-buttons--view-icon-text elementor-share-buttons--color-official elementor-widget elementor-widget-share-buttons\" data-id=\"0e637a3\" data-element_type=\"widget\" data-e-type=\"widget\" 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