Free‐breathing, non‐ECG, simultaneous myocardial T1, T2, T2, and fat‐fraction mapping with motion‐resolved cardiovascular MR multitasking
Purpose To develop a free‐breathing, non‐electrocardiogram technique for simultaneous myocardial T1, T2, T2*, and fat‐fraction (FF) mapping in a single scan. Methods The MR Multitasking framework is adapted to quantify T1, T2, T2*, and FF simultaneously. A variable TR scheme is developed to preserve...
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| Published in: | Magnetic resonance in medicine Vol. 88; no. 4; pp. 1748 - 1763 |
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| Main Authors: | , , , , , , , , , , , , |
| Format: | Journal Article |
| Language: | English |
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01-10-2022
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| Abstract | Purpose
To develop a free‐breathing, non‐electrocardiogram technique for simultaneous myocardial T1, T2, T2*, and fat‐fraction (FF) mapping in a single scan.
Methods
The MR Multitasking framework is adapted to quantify T1, T2, T2*, and FF simultaneously. A variable TR scheme is developed to preserve temporal resolution and imaging efficiency. The underlying high‐dimensional image is modeled as a low‐rank tensor, which allows accelerated acquisition and efficient reconstruction. The accuracy and/or repeatability of the technique were evaluated on static and motion phantoms, 12 healthy volunteers, and 3 patients by comparing to the reference techniques.
Results
In static and motion phantoms, T1/T2/T2*/FF measurements showed substantial consistency (R > 0.98) and excellent agreement (intraclass correlation coefficient > 0.93) with reference measurements. In human subjects, the proposed technique yielded repeatable T1, T2, T2*, and FF measurements that agreed with those from references.
Conclusions
The proposed free‐breathing, non‐electrocardiogram, motion‐resolved Multitasking technique allows simultaneous quantification of myocardial T1, T2, T2*, and FF in a single 2.5‐min scan. |
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| AbstractList | PurposeTo develop a free‐breathing, non‐electrocardiogram technique for simultaneous myocardial T1, T2, T2*, and fat‐fraction (FF) mapping in a single scan.MethodsThe MR Multitasking framework is adapted to quantify T1, T2, T2*, and FF simultaneously. A variable TR scheme is developed to preserve temporal resolution and imaging efficiency. The underlying high‐dimensional image is modeled as a low‐rank tensor, which allows accelerated acquisition and efficient reconstruction. The accuracy and/or repeatability of the technique were evaluated on static and motion phantoms, 12 healthy volunteers, and 3 patients by comparing to the reference techniques.ResultsIn static and motion phantoms, T1/T2/T2*/FF measurements showed substantial consistency (R > 0.98) and excellent agreement (intraclass correlation coefficient > 0.93) with reference measurements. In human subjects, the proposed technique yielded repeatable T1, T2, T2*, and FF measurements that agreed with those from references.ConclusionsThe proposed free‐breathing, non‐electrocardiogram, motion‐resolved Multitasking technique allows simultaneous quantification of myocardial T1, T2, T2*, and FF in a single 2.5‐min scan. Purpose To develop a free‐breathing, non‐electrocardiogram technique for simultaneous myocardial T1, T2, T2*, and fat‐fraction (FF) mapping in a single scan. Methods The MR Multitasking framework is adapted to quantify T1, T2, T2*, and FF simultaneously. A variable TR scheme is developed to preserve temporal resolution and imaging efficiency. The underlying high‐dimensional image is modeled as a low‐rank tensor, which allows accelerated acquisition and efficient reconstruction. The accuracy and/or repeatability of the technique were evaluated on static and motion phantoms, 12 healthy volunteers, and 3 patients by comparing to the reference techniques. Results In static and motion phantoms, T1/T2/T2*/FF measurements showed substantial consistency (R > 0.98) and excellent agreement (intraclass correlation coefficient > 0.93) with reference measurements. In human subjects, the proposed technique yielded repeatable T1, T2, T2*, and FF measurements that agreed with those from references. Conclusions The proposed free‐breathing, non‐electrocardiogram, motion‐resolved Multitasking technique allows simultaneous quantification of myocardial T1, T2, T2*, and FF in a single 2.5‐min scan. |
| Author | Han, Fei Cao, Tianle Mao, Xianglun Wang, Nan Xie, Yibin Colbert, Caroline M. Christodoulou, Anthony G. Li, Debiao Nguyen, Kim‐Lien Han, Pei Han, Hui Lee, Hsu‐Lei Kwan, Alan C. |
| Author_xml | – sequence: 1 givenname: Tianle orcidid: 0000-0003-3739-3103 surname: Cao fullname: Cao, Tianle organization: University of California – sequence: 2 givenname: Nan orcidid: 0000-0002-7616-8083 surname: Wang fullname: Wang, Nan organization: Stanford University – sequence: 3 givenname: Alan C. orcidid: 0000-0002-4393-1011 surname: Kwan fullname: Kwan, Alan C. organization: Cedars‐Sinai Medical Center – sequence: 4 givenname: Hsu‐Lei orcidid: 0000-0001-5509-5199 surname: Lee fullname: Lee, Hsu‐Lei organization: Cedars‐Sinai Medical Center – sequence: 5 givenname: Xianglun orcidid: 0000-0002-2745-7444 surname: Mao fullname: Mao, Xianglun organization: Cedars‐Sinai Medical Center – sequence: 6 givenname: Yibin orcidid: 0000-0002-0333-567X surname: Xie fullname: Xie, Yibin organization: Cedars‐Sinai Medical Center – sequence: 7 givenname: Kim‐Lien orcidid: 0000-0002-8854-2976 surname: Nguyen fullname: Nguyen, Kim‐Lien organization: David Geffen School of Medicine and VA Greater Los Angeles Healthcare System – sequence: 8 givenname: Caroline M. surname: Colbert fullname: Colbert, Caroline M. organization: University of California – sequence: 9 givenname: Fei surname: Han fullname: Han, Fei organization: Siemens Medical Solutions USA, Inc – sequence: 10 givenname: Pei orcidid: 0000-0001-8532-9339 surname: Han fullname: Han, Pei organization: University of California – sequence: 11 givenname: Hui surname: Han fullname: Han, Hui organization: University of California – sequence: 12 givenname: Anthony G. orcidid: 0000-0002-9334-8684 surname: Christodoulou fullname: Christodoulou, Anthony G. organization: University of California – sequence: 13 givenname: Debiao surname: Li fullname: Li, Debiao email: debiao.li@cshs.org organization: University of California |
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| Copyright | 2022 International Society for Magnetic Resonance in Medicine |
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| Notes | Funding information National Institute of Health, Grant/Award Numbers: R01EB028146; R01HL148182; R01HL156818; VA‐MERIT, Grant/Award Number: I01CX001901 Anthony G. Christodoulou and Debiao Li contributed equally to this work. ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
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To develop a free‐breathing, non‐electrocardiogram technique for simultaneous myocardial T1, T2, T2*, and fat‐fraction (FF) mapping in a single scan.... PurposeTo develop a free‐breathing, non‐electrocardiogram technique for simultaneous myocardial T1, T2, T2*, and fat‐fraction (FF) mapping in a single... PURPOSETo develop a free-breathing, non-electrocardiogram technique for simultaneous myocardial T1 , T2 , T2 *, and fat-fraction (FF) mapping in a single scan.... |
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| SubjectTerms | cardiac MRI Correlation coefficient Correlation coefficients EKG Electrocardiography free‐breathing Image acquisition Image reconstruction Mapping MR multitasking multiparametric mapping Multitasking Reproducibility Temporal resolution Tensors tissue characterization |
| Title | Free‐breathing, non‐ECG, simultaneous myocardial T1, T2, T2, and fat‐fraction mapping with motion‐resolved cardiovascular MR multitasking |
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