Comparison of multicenter MRI protocols for visualizing the spinal cord gray matter

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00098892%3A_____%2F22%3A10157273" target="_blank" >RIV/00098892:_____/22:10157273 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/65269705:_____/22:00076137 RIV/00216224:14740/22:00127895

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/10.1002/mrm.29249" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1002/mrm.29249</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/mrm.29249" target="_blank" >10.1002/mrm.29249</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of multicenter MRI protocols for visualizing the spinal cord gray matter

Popis výsledku v původním jazyce

Purpose: Spinal cord gray-matter imaging is valuable for a number of applications, but remains challenging. The purpose of this work was to compare various MRI protocols at 1.5 T, 3 T, and 7 T for visualizing the gray matter. Methods: In vivo data of the cervical spinal cord were collected from nine different imaging centers. Data processing consisted of automatically segmenting the spinal cord and its gray matter and co-registering back-to-back scans. We computed the SNR using two methods (SNR_single using a single scan and SNR_diff using the difference between back-to-back scans) and the white/gray matter contrast-to-noise ratio per unit time. Synthetic phantom data were generated to evaluate the metrics performance. Experienced radiologists qualitativelyscored the images. We ran the same processing on an open-access multicenter data set of the spinal cord MRI (N = 267 participants). Results: Qualitative assessments indicated comparable image quality for 3T and 7T scans. Spatial resolution was higher at higher field strength, and image quality at 1.5 T was found to be moderate to low. The proposed quantitative metrics were found to be robust to underlying changes to the SNR and contrast; however, the SNR_single method lacked accuracy when there were excessive partial-volume effects. Conclusion: We propose quality assessment criteria and metrics for gray-matter visualization and apply them to different protocols. The proposed criteria and metrics, the analyzed protocols, and our open-source code can serve as a benchmark for future optimization of spinal cord gray-matter imaging protocols.

Název v anglickém jazyce

Comparison of multicenter MRI protocols for visualizing the spinal cord gray matter

Popis výsledku anglicky

Purpose: Spinal cord gray-matter imaging is valuable for a number of applications, but remains challenging. The purpose of this work was to compare various MRI protocols at 1.5 T, 3 T, and 7 T for visualizing the gray matter. Methods: In vivo data of the cervical spinal cord were collected from nine different imaging centers. Data processing consisted of automatically segmenting the spinal cord and its gray matter and co-registering back-to-back scans. We computed the SNR using two methods (SNR_single using a single scan and SNR_diff using the difference between back-to-back scans) and the white/gray matter contrast-to-noise ratio per unit time. Synthetic phantom data were generated to evaluate the metrics performance. Experienced radiologists qualitativelyscored the images. We ran the same processing on an open-access multicenter data set of the spinal cord MRI (N = 267 participants). Results: Qualitative assessments indicated comparable image quality for 3T and 7T scans. Spatial resolution was higher at higher field strength, and image quality at 1.5 T was found to be moderate to low. The proposed quantitative metrics were found to be robust to underlying changes to the SNR and contrast; however, the SNR_single method lacked accuracy when there were excessive partial-volume effects. Conclusion: We propose quality assessment criteria and metrics for gray-matter visualization and apply them to different protocols. The proposed criteria and metrics, the analyzed protocols, and our open-source code can serve as a benchmark for future optimization of spinal cord gray-matter imaging protocols.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20601 - Medical engineering

Projekt

<a href="/cs/project/NV18-04-00159" target="_blank" >NV18-04-00159: Využití pokročilých magneticko-rezonančních technik k odhalení patofyziologie a zlepšení diagnostiky a praktického managementu degenerativní komprese krční míchy</a><br>

Návaznosti

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

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Magnetic Resonance in Medicine

ISSN

0740-3194

e-ISSN

1522-2594

Svazek periodika

88

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

849-859

Kód UT WoS článku

000788389000001

EID výsledku v databázi Scopus

2-s2.0-85129196754