MR imaging of tissue near aneurysm clips using short- and zero time MR sequences

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F18%3A00101371" target="_blank" >RIV/00216224:14740/18:00101371 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.measurement.2018.08.017" target="_blank" >http://dx.doi.org/10.1016/j.measurement.2018.08.017</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.measurement.2018.08.017" target="_blank" >10.1016/j.measurement.2018.08.017</a>

Jazyk výsledku

angličtina

Název v původním jazyce

MR imaging of tissue near aneurysm clips using short- and zero time MR sequences

Popis výsledku v původním jazyce

This study shows how 3D ultra-short (UTE) and zero echo time (ZTE) experiments could be used to minimize susceptibility artifacts caused by MR-compatible aneurysm clips. Aneurysm clips are used to stop or prevent an aneurysm from bleeding. Postoperative imaging is needed to detect incomplete clipping, de novo aneurysm formation or multiple aneurysms. MRI is a non-invasive, radiation-free, technique to diagnose aneurysms. Unfortunately, treatment assessment by MRI after surgical placement of an aneurysm clip is complicated due to the presence of the metal clip, resulting in susceptibility artifacts. The clip's high magnetic susceptibility causes severe, orientation dependent, variations in the local magnetic field. Often this results in pronounced MR image distortions, including signal voids and pile-ups. We show that ZTE and 3D-UTE experiments, using radial sampling, provide MR images with less distortions than sequences using slice selection. Due to the minimal delay after RF-excitation and a significant reduction in signal time evolution during acquisition, susceptibility artifacts can be reduced. (C) 2018 Elsevier Ltd. All rights reserved.

Název v anglickém jazyce

MR imaging of tissue near aneurysm clips using short- and zero time MR sequences

Popis výsledku anglicky

This study shows how 3D ultra-short (UTE) and zero echo time (ZTE) experiments could be used to minimize susceptibility artifacts caused by MR-compatible aneurysm clips. Aneurysm clips are used to stop or prevent an aneurysm from bleeding. Postoperative imaging is needed to detect incomplete clipping, de novo aneurysm formation or multiple aneurysms. MRI is a non-invasive, radiation-free, technique to diagnose aneurysms. Unfortunately, treatment assessment by MRI after surgical placement of an aneurysm clip is complicated due to the presence of the metal clip, resulting in susceptibility artifacts. The clip's high magnetic susceptibility causes severe, orientation dependent, variations in the local magnetic field. Often this results in pronounced MR image distortions, including signal voids and pile-ups. We show that ZTE and 3D-UTE experiments, using radial sampling, provide MR images with less distortions than sequences using slice selection. Due to the minimal delay after RF-excitation and a significant reduction in signal time evolution during acquisition, susceptibility artifacts can be reduced. (C) 2018 Elsevier Ltd. All rights reserved.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20601 - Medical engineering

Projekt

<a href="/cs/project/GA15-12607S" target="_blank" >GA15-12607S: Návrh a optimalizace pulzních sekvenci s ultrakrátkým echо-časem pro spolehlivou detekci obsahu myelinu v lidském mozku pomocí MR zobrazování.</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

MEASUREMENT

ISSN

0263-2241

e-ISSN

—

Svazek periodika

130

Číslo periodika v rámci svazku

DEC

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

398-403

Kód UT WoS článku

000446464400037

EID výsledku v databázi Scopus

2-s2.0-85052058037