Arterial occlusion duration affects the cuff-induced hyperemic response in skeletal muscle BOLD perfusion imaging as shown in young healthy subjects
The objective was to explore the robustness of this technique and its sensitivity to the occlusion duration.MATERIALS AND METHODS: BOLD images were acquired at 3 T in 14 healthy volunteers. [Formula: see text]-imaging with 5- and 1.5-min occlusions were acquired and several semi-quantitative BOLD parameters were derived from ROI-based [Formula: see text]-time curves. Differences in parameters from the two different occlusion durations were evaluated in the gastrocnemius and soleus muscles using non-parametrical tests. Intra- and inter-scan repeatability were evaluated with coefficient of variation.RESULTS: Longer occlusion...
Source: Magma - June 17, 2023 Category: Radiology Authors: Jonathan Arvidsson Stefanie Eriksson Edvin Johansson Kerstin Lagerstrand Source Type: research
Arterial occlusion duration affects the cuff-induced hyperemic response in skeletal muscle BOLD perfusion imaging as shown in young healthy subjects
The objective was to explore the robustness of this technique and its sensitivity to the occlusion duration.MATERIALS AND METHODS: BOLD images were acquired at 3 T in 14 healthy volunteers. [Formula: see text]-imaging with 5- and 1.5-min occlusions were acquired and several semi-quantitative BOLD parameters were derived from ROI-based [Formula: see text]-time curves. Differences in parameters from the two different occlusion durations were evaluated in the gastrocnemius and soleus muscles using non-parametrical tests. Intra- and inter-scan repeatability were evaluated with coefficient of variation.RESULTS: Longer occlusion...
Source: Magma - June 17, 2023 Category: Radiology Authors: Jonathan Arvidsson Stefanie Eriksson Edvin Johansson Kerstin Lagerstrand Source Type: research
Arterial occlusion duration affects the cuff-induced hyperemic response in skeletal muscle BOLD perfusion imaging as shown in young healthy subjects
The objective was to explore the robustness of this technique and its sensitivity to the occlusion duration.MATERIALS AND METHODS: BOLD images were acquired at 3 T in 14 healthy volunteers. [Formula: see text]-imaging with 5- and 1.5-min occlusions were acquired and several semi-quantitative BOLD parameters were derived from ROI-based [Formula: see text]-time curves. Differences in parameters from the two different occlusion durations were evaluated in the gastrocnemius and soleus muscles using non-parametrical tests. Intra- and inter-scan repeatability were evaluated with coefficient of variation.RESULTS: Longer occlusion...
Source: Magma - June 17, 2023 Category: Radiology Authors: Jonathan Arvidsson Stefanie Eriksson Edvin Johansson Kerstin Lagerstrand Source Type: research
Arterial occlusion duration affects the cuff-induced hyperemic response in skeletal muscle BOLD perfusion imaging as shown in young healthy subjects
The objective was to explore the robustness of this technique and its sensitivity to the occlusion duration.MATERIALS AND METHODS: BOLD images were acquired at 3 T in 14 healthy volunteers. [Formula: see text]-imaging with 5- and 1.5-min occlusions were acquired and several semi-quantitative BOLD parameters were derived from ROI-based [Formula: see text]-time curves. Differences in parameters from the two different occlusion durations were evaluated in the gastrocnemius and soleus muscles using non-parametrical tests. Intra- and inter-scan repeatability were evaluated with coefficient of variation.RESULTS: Longer occlusion...
Source: Magma - June 17, 2023 Category: Radiology Authors: Jonathan Arvidsson Stefanie Eriksson Edvin Johansson Kerstin Lagerstrand Source Type: research
Arterial occlusion duration affects the cuff-induced hyperemic response in skeletal muscle BOLD perfusion imaging as shown in young healthy subjects
The objective was to explore the robustness of this technique and its sensitivity to the occlusion duration.MATERIALS AND METHODS: BOLD images were acquired at 3 T in 14 healthy volunteers. [Formula: see text]-imaging with 5- and 1.5-min occlusions were acquired and several semi-quantitative BOLD parameters were derived from ROI-based [Formula: see text]-time curves. Differences in parameters from the two different occlusion durations were evaluated in the gastrocnemius and soleus muscles using non-parametrical tests. Intra- and inter-scan repeatability were evaluated with coefficient of variation.RESULTS: Longer occlusion...
Source: Magma - June 17, 2023 Category: Radiology Authors: Jonathan Arvidsson Stefanie Eriksson Edvin Johansson Kerstin Lagerstrand Source Type: research
Arterial occlusion duration affects the cuff-induced hyperemic response in skeletal muscle BOLD perfusion imaging as shown in young healthy subjects
The objective was to explore the robustness of this technique and its sensitivity to the occlusion duration.MATERIALS AND METHODS: BOLD images were acquired at 3 T in 14 healthy volunteers. [Formula: see text]-imaging with 5- and 1.5-min occlusions were acquired and several semi-quantitative BOLD parameters were derived from ROI-based [Formula: see text]-time curves. Differences in parameters from the two different occlusion durations were evaluated in the gastrocnemius and soleus muscles using non-parametrical tests. Intra- and inter-scan repeatability were evaluated with coefficient of variation.RESULTS: Longer occlusion...
Source: Magma - June 17, 2023 Category: Radiology Authors: Jonathan Arvidsson Stefanie Eriksson Edvin Johansson Kerstin Lagerstrand Source Type: research
Concomitant field compensation of spiral turbo spin-echo at 0.55 T
DISCUSSION: We demonstrated a generalizable approach to mitigate concomitant field artifacts for spiral TSE acquisitions via the addition of quadratic-nulling gradients, which can potentially improve neuroimaging at low-field through increased acquisition efficiency.PMID:37306784 | DOI:10.1007/s10334-023-01103-0 (Source: Magma)
Source: Magma - June 12, 2023 Category: Radiology Authors: Rajiv Ramasawmy John P Mugler Ahsan Javed Zhixing Wang Daniel A Herzka Craig H Meyer Adrienne E Campbell-Washburn Source Type: research
Concomitant field compensation of spiral turbo spin-echo at 0.55 T
DISCUSSION: We demonstrated a generalizable approach to mitigate concomitant field artifacts for spiral TSE acquisitions via the addition of quadratic-nulling gradients, which can potentially improve neuroimaging at low-field through increased acquisition efficiency.PMID:37306784 | DOI:10.1007/s10334-023-01103-0 (Source: Magma)
Source: Magma - June 12, 2023 Category: Radiology Authors: Rajiv Ramasawmy John P Mugler Ahsan Javed Zhixing Wang Daniel A Herzka Craig H Meyer Adrienne E Campbell-Washburn Source Type: research
Concomitant field compensation of spiral turbo spin-echo at 0.55 T
DISCUSSION: We demonstrated a generalizable approach to mitigate concomitant field artifacts for spiral TSE acquisitions via the addition of quadratic-nulling gradients, which can potentially improve neuroimaging at low-field through increased acquisition efficiency.PMID:37306784 | DOI:10.1007/s10334-023-01103-0 (Source: Magma)
Source: Magma - June 12, 2023 Category: Radiology Authors: Rajiv Ramasawmy John P Mugler Ahsan Javed Zhixing Wang Daniel A Herzka Craig H Meyer Adrienne E Campbell-Washburn Source Type: research
Concomitant field compensation of spiral turbo spin-echo at 0.55 T
DISCUSSION: We demonstrated a generalizable approach to mitigate concomitant field artifacts for spiral TSE acquisitions via the addition of quadratic-nulling gradients, which can potentially improve neuroimaging at low-field through increased acquisition efficiency.PMID:37306784 | DOI:10.1007/s10334-023-01103-0 (Source: Magma)
Source: Magma - June 12, 2023 Category: Radiology Authors: Rajiv Ramasawmy John P Mugler Ahsan Javed Zhixing Wang Daniel A Herzka Craig H Meyer Adrienne E Campbell-Washburn Source Type: research
Automated inversion time selection for black-blood late gadolinium enhancement cardiac imaging in clinical practice
DISCUSSION: Thanks to its good performance and simplicity of implementation, the proposed algorithm is a good candidate for automated BL-LGE imaging in clinical practice.PMID:37294423 | DOI:10.1007/s10334-023-01101-2 (Source: Magma)
Source: Magma - June 9, 2023 Category: Radiology Authors: Aur élien Maillot Soumaya Sridi Xavier Pineau Amandine Andr é-Billeau St éphanie Hosteins Jean-David Maes G éraldine Montier Marta Nu ñez-Garcia Bruno Quesson Maxime Sermesant Hubert Cochet Matthias Stuber Aur élien Bustin Source Type: research
Automated inversion time selection for black-blood late gadolinium enhancement cardiac imaging in clinical practice
DISCUSSION: Thanks to its good performance and simplicity of implementation, the proposed algorithm is a good candidate for automated BL-LGE imaging in clinical practice.PMID:37294423 | DOI:10.1007/s10334-023-01101-2 (Source: Magma)
Source: Magma - June 9, 2023 Category: Radiology Authors: Aur élien Maillot Soumaya Sridi Xavier Pineau Amandine Andr é-Billeau St éphanie Hosteins Jean-David Maes G éraldine Montier Marta Nu ñez-Garcia Bruno Quesson Maxime Sermesant Hubert Cochet Matthias Stuber Aur élien Bustin Source Type: research
Automated inversion time selection for black-blood late gadolinium enhancement cardiac imaging in clinical practice
DISCUSSION: Thanks to its good performance and simplicity of implementation, the proposed algorithm is a good candidate for automated BL-LGE imaging in clinical practice.PMID:37294423 | DOI:10.1007/s10334-023-01101-2 (Source: Magma)
Source: Magma - June 9, 2023 Category: Radiology Authors: Aur élien Maillot Soumaya Sridi Xavier Pineau Amandine Andr é-Billeau St éphanie Hosteins Jean-David Maes G éraldine Montier Marta Nu ñez-Garcia Bruno Quesson Maxime Sermesant Hubert Cochet Matthias Stuber Aur élien Bustin Source Type: research
An evolution of low-field strength MRI
MAGMA. 2023 Jun 8. doi: 10.1007/s10334-023-01104-z. Online ahead of print.ABSTRACTThe paper describes the evolution of low-field MRI from the very early pioneering days in the late 70 s until today. It is not meant to give a comprehensive historical account of the development of MRI, but rather to highlight the different research environments then and now. In the early 90 s, when low-field systems below 1.5 T essentially vanished, there were just no reasonable means available to make up for the factor of roughly three in signal-to-noise-ratio (SNR) between 0.5 and 1.5 T. This has drastically changed. Improvements in hardwa...
Source: Magma - June 8, 2023 Category: Radiology Authors: Juergen Hennig Source Type: research
Relaxation measurements of an MRI system phantom at low magnetic field strengths
DISCUSSION: The low field relaxation rates of the NiCl2 and MnCl2 arrays in the ISMRM/NIST system phantom are investigated and compared to results from clinical field strengths of 1.5 T and 3.0 T. The measurements can be used as a benchmark for MRI system functionality and stability, especially when MRI systems are taken out of the radiology suite or laboratory and into less traditional environments.PMID:37209233 | DOI:10.1007/s10334-023-01086-y (Source: Magma)
Source: Magma - May 20, 2023 Category: Radiology Authors: Michele N Martin Kalina V Jordanova Anthony B Kos Stephen E Russek Kathryn E Keenan Karl F Stupic Source Type: research
