Cine MR Angiography of the Heart with Segmented True Fast Imaging with Steady-State Precession

Carr, James C.; Simonetti, Orlando P.; Bundy, Jeff; Li, Debiao; Pereles, Scott; Finn, J. Paul

doi:10.1148/radiology.219.3.r01jn44828

Cited by 430 publications

(290 citation statements)

References 12 publications

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“…Meanwhile, true SSFP is based on a gradient echosequence and recycles steady-state transverse magnetization in long T2 substances. The steady-state signal is dependent on the T2-to-T1 ratio, which is relatively high for blood and has been used successfully in vascular imaging (17,18). It allows visualization of the vessels with high flow velocity and narrow diameter, such as the hepatic artery, without an intravenous contrast agent (11).…”

Section: Discussionmentioning

confidence: 99%

“…For better visualization of blood in the body region, 3D half-Fourier fast spin-echo (FSE) sequence and true steady-state freeprecession (SSFP) sequences are widely used for non-CE MRA (11)(12)(13)(14)(15)(16)(17)(18)(19). They allow coronal acquisition that is not possible with time-of-flight imaging, especially for body MRA, and thus reduces acquisition time.…”

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confidence: 99%

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Non‐contrast‐enhanced MR portography with time‐spatial labeling inversion pulses: Comparison of imaging with three‐dimensional half‐fourier fast spin‐echo and true steady‐state free‐precession sequences

Shimada

Isoda

Okada

et al. 2009

Magnetic Resonance Imaging

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Purpose:To compare and evaluate images acquired with two different MR angiography (MRA) sequences, three-dimensional (3D) half-Fourier fast spin-echo (FSE) and 3D true steady-state free-precession (SSFP) combined with two time-spatial labeling inversion pulses (T-SLIPs), for selective and non-contrast-enhanced (non-CE) visualization of the portal vein. Materials and Methods:Twenty healthy volunteers were examined using half-Fourier FSE and true SSFP sequences on a 1.5T MRI system with two T-SLIPs, one placed on the liver and thorax, and the other on the lower abdomen. For quantitative analysis, vessel-to-liver contrast (Cv-l) ratios of the main portal vein (MPV), right portal vein (RPV), and left portal vein (LPV) were measured. The quality of visualization was also evaluated. Results:In both pulse sequences, selective visualization of the portal vein was successfully conducted in all 20 volunteers. Quantitative evaluation showed significantly better Cv-l at the RPVs and LPVs in half-Fourier FSE (P Ͻ 0.0001). At the MPV, Cv-l was better in true SSFP, but was not statistically different. Visualization scores were significantly better only at branches of segments four and eight for half-Fourier FSE (P ϭ 0.001 and 0.03, respectively). Conclusion:Both 3D half-Fourier FSE and true SSFP scans with T-SLIPs enabled selective non-CE visualization of the portal vein. Half-Fourier FSE was considered appropriate for intrahepatic portal vein visualization, and true SSFP may be preferable when visualization of the MPV is required.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Non‐contrast‐enhanced MR portography with time‐spatial labeling inversion pulses: Comparison of imaging with three‐dimensional half‐fourier fast spin‐echo and true steady‐state free‐precession sequences

Shimada

Isoda

Okada

et al. 2009

Magnetic Resonance Imaging

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“…The recently introduced SSFP sequences enable shorter acquisition times, allow higher in-plane resolutions, and provide better image quality (8,9). Their accuracy in determining left ventricular (LV) mass was also evaluated in animal experiments (10).…”

Section: Cine Magnetic Resonance (Mr) Imaging Has Beenmentioning

confidence: 99%

“…Contrast between intraventricular blood and myocardium as well as between myocardium and epicardial fat is significantly higher in images obtained with SSFP sequences compared to those acquired with TGE sequences (8,9), and thus improves the automatic detection of endocardial contours (11,12). The SSFP sequence is therefore considered to be the sequence of choice for the assessment of ventricular function (13).…”

Section: Cine Magnetic Resonance (Mr) Imaging Has Beenmentioning

confidence: 99%

Assessment of left ventricular function by breath‐hold cine MR imaging: Comparison of different steady‐state free precession sequences

Kunz

Oellig

Krummenauer

et al. 2005

Magnetic Resonance Imaging

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Purpose:To compare steady-state free precession (SSFP) sequence protocols with different acquisition times (TA) and temporal resolutions (tRes) due to the implementation of a view sharing technique called shared phases for the assessment of left ventricular (LV) function by breath-hold cine magnetic resonance (MR) imaging. Materials and Methods:End-diastolic and end-systolic volumes (EDV, ESV) were measured in contiguous shortaxis slices with a thickness of 8 mm acquired in 10 healthy male volunteers. The following true fast imaging with steady-state precession (TrueFISP) sequence protocols were compared: protocol A) internal standard of reference, segmented: tRes 34.5 msec, TA 18 beats per slice; protocol B) segmented, shared phases: tRes 34.1 msec, TA 10 beats per slice; and protocol C) real-time, shared phases, parallel acquisition technique: tRes 47.3 msec, TA 24 beats for 12 slices covering the entire left ventricle. Results:Phase sharing leads to a significant decrease in EDV, stroke volume (SV), and ejection fraction (EF) (median difference -7.0 mL [*], -9.6 mL, and -3.4%, respectively, for protocol B; -15.3 mL, -13.3 mL, and -2.4% for protocol C; P ϭ 0.002, *P ϭ 0.021). The observed median difference of real-time EDV and SV estimates is of clinical relevance. Real-time cine MR imaging shows a greater variability of EDV and SV. No relevant differences in ESV were observed. Conclusion:The true cine frame duration of both shared phases sequence protocols exceeds the period of isovolumetric contraction (IVCT) of the left ventricle resulting in a systematic and significant underestimation of EDV and consequently SV and EF. SSFP sequence protocol parameters, particularly tRes and use of view sharing techniques, should therefore be known at follow-up examinations in order to be able to assess LV remodeling in patients with heart failure. CINE MAGNETIC RESONANCE (MR) imaging has beenshown to be the most accurate and reproducible method for the evaluation of cardiac ventricular volumes, function, and mass and is therefore regarded to be the standard of reference (1-4). Two different MR sequences are commonly used to assess cardiac function parameters non-invasively: segmented k-space turbo gradient echo (TGE) and steady-state free precession (SSFP) sequences.The accuracy of segmented k-space TGE sequences has been extensively evaluated, including animal experiments (5-8). The recently introduced SSFP sequences enable shorter acquisition times, allow higher in-plane resolutions, and provide better image quality (8,9). Their accuracy in determining left ventricular (LV) mass was also evaluated in animal experiments (10). Normal values were established for left and right ventricular volumes and function for both TGE as well as SSFP sequences, with SSFP sequences yielding significantly larger end-diastolic and end-systolic volumes (EDV and ESV, respectively) than TGE sequences (7,8,(11)(12)(13)(14)(15)(16)(17).Signal intensity in images acquired with SSFP sequences relies on T2/T1 ratio and does not depend on inflow...

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“…However, the analysis of tagged images requires sufficient myocardial signal-to-noise ratio (SNR) and tag-myocardium contrast-to-noise ratio (CNR) for accurate tag detection (9 -12). Refocused steady-state free precession (SSFP) (13), also known as fast imaging with steady precession (FISP or TrueFISP) (14,15), has proven valuable for in vivo cardiac functional MRI because of its high tissue SNR and excellent myocardium-to-blood CNR (16,17). Therefore, the analysis of tagged images may be improved with the increased SNR and inherent contrast of an SSFP acquisition.…”

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confidence: 99%

Myocardial tagging with SSFP

Herzka

Guttman

McVeigh

2003

Magnetic Resonance in Med

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This work presents the first implementation of myocardial tagging with refocused steady-state free precession (SSFP) and magnetization preparation. The combination of myocardial tagging (a noninvasive method for quantitative measurement of regional and global cardiac function) with the high tissue signalto-noise ratio (SNR) obtained with SSFP is shown to yield improvements in terms of the myocardium-tag contrast-to-noise ratio (CNR) and tag persistence when compared to the current standard fast gradient-echo (FGRE) tagging protocol. Myocardium-tag CNR and tag persistence were studied using numerical simulations as well as phantom and human experiments. Both quantities were found to decrease with increasing imaging flip angle (␣) due to an increased tag decay rate and a decrease in myocardial steady-state signal. However, higher ␣ yielded better blood-myocardium contrast, indicating that optimal ␣ is dependent on the application: higher ␣ for better blood-myocardium boundary visualization, and lower ␣ for better tag persistence. SSFP tagging provided the same myocardium-tag CNR as FGRE tagging when acquired at four times the bandwidth and better tag-and blood-myocardium CNRs than FGRE tagging when acquired at equal or twice the receiver bandwidth (RBW). The increased acquisition efficiency of SSFP allowed decreases in breath-hold duration, or increases in temporal resolution, as compared to FGRE.Magn Reson Med 49: 329 -340,

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Cine MR Angiography of the Heart with Segmented True Fast Imaging with Steady-State Precession

Cited by 430 publications

References 12 publications

Non‐contrast‐enhanced MR portography with time‐spatial labeling inversion pulses: Comparison of imaging with three‐dimensional half‐fourier fast spin‐echo and true steady‐state free‐precession sequences

Non‐contrast‐enhanced MR portography with time‐spatial labeling inversion pulses: Comparison of imaging with three‐dimensional half‐fourier fast spin‐echo and true steady‐state free‐precession sequences

Assessment of left ventricular function by breath‐hold cine MR imaging: Comparison of different steady‐state free precession sequences

Myocardial tagging with SSFP

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