Compressed SENSE accelerated 3D T1w black blood turbo spin echo versus 2D T1w turbo spin echo sequence in pituitary magnetic resonance imaging

Sartoretti, Thomas; Sartoretti, Elisabeth; Wyss, Michael; Schwenk, Árpád; Smoorenburg, Luuk van; Eichenberger, Barbara; Najafi, Arash; Binkert, Christoph A.; Becker, Anton S.; Sartoretti–Schefer, Sabine

doi:10.1016/j.ejrad.2019.108667

Cited by 23 publications

(22 citation statements)

References 20 publications

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“…Three sequences had an identical geometric resolution (voxel size, 0.82 Â 0.82 Â 1.2 mm 3 ): first, the SENSE sequence using the SENSE PI technique (SENSE factor 2, scan duration, 5:08 minutes); second, the CS 3.5 sequence using the compressed SENSE acceleration technique with a variable density Poisson disk-sampling scheme followed by iterative reconstruction (compressed SENSE factor, 3.5; scan duration, 3:06 minutes) [18][19][20] ; and third, a spiral-TOF (abbreviated spiral) based on a stack of spirals with an in-plane spiral-out readout scheme (spiral interleaves, 27; spiral acquisition window, 10 milliseconds; scan duration, 1:32 minutes). In addition, 2 sequences with the same spiral-out readout scheme but higher resolution were acquired-the isotropic spiral-TOF 0.8 (abbreviated spiral 0.8) (voxel size, 0.80 Â 0.80 Â 0.80 mm 3 ;scan duration, 2:12 minutes) and the isotropic spiral-TOF 0.6 (abbreviated spiral 0.6) sequences (voxel size, 0.60 Â 0.60 Â 0.60 mm 3 ; scan duration, 5:22 minutes).…”

Section: Mr Imagingmentioning

confidence: 99%

Ultrafast Intracranial Vessel Imaging With Non-Cartesian Spiral 3-Dimensional Time-of-Flight Magnetic Resonance Angiography at 1.5 T

et al. 2020

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OBJECTIVES Non-Cartesian spiral magnetic resonance (MR) acquisition may enable higher scan speeds, as the spiral traverses the k-space more efficiently per given time than in Cartesian trajectories. Spiral MR imaging can be implemented in time-of-flight (TOF) MR angiography (MRA) sequences. In this study, we tested the performance of five 3-dimensional TOF MRA sequences for intracranial vessel imaging at 1.5 T with qualitative and quantitative image quality metrics based on in vitro and in vivo measurements. Specifically, 3 novel spiral TOF MRA sequences (spiral-TOFs) and a compressed sensing (CS) technology-accelerated TOF MRA sequence (CS 3.5) were compared with a conventional (criterion standard) parallel imaging-accelerated TOF MRA sequence (SENSE). MATERIALS AND METHODS The SENSE sequence (5:08 minutes) was compared with the CS 3.5 sequence (3:06 minutes) and a spiral-TOF (spiral, 1:32 minutes), all with identical resolutions. In addition, 2 further isotropic spiral-TOFs (spiral 0.8, 2:12 minutes; spiral 0.6, 5:22 minutes) with higher resolution were compared with the SENSE. First, vessel tracking experiments were performed in vitro with a dedicated vascular phantom to determine possible differences in the depiction of cross-sectional areas of vessel segments. For the in vitro tests, an additional 3-dimensional proton density-weighted sequence was added for comparison reasons. Second, 3 readers blinded to sequence details assessed qualitative (16 features) and 2 readers assessed quantitative (contrast-to-noise ratio [CNR], contrast ratio [CR], vessel sharpness, and full width at half maximum edge criterion measurements) image quality based on images acquired from scanning 10 healthy volunteers with all 5 TOF sequences. Scores from quantitative image quality analysis were compared with Kruskal-Wallis, analysis of variance, or Welch's analysis of variance, followed by Dunnett's or Dunnett's T3 post hoc tests. Scores from qualitative image quality analysis were compared with exact binomial tests, and the level of interreader agreement was determined with Krippendorff's alpha. RESULTS Concerning the in vitro tests, there were no significant differences between the 5 TOFs and the proton density-weighted sequence in measuring cross-sectional areas of vessel segments (P = 0.904). As for the in vivo tests, the CS 3.5 exhibited equal qualitative image quality as the SENSE, whereas the 3 spiral-TOFs outperformed the SENSE in several categories (P values from 0.002 to 0.031). Specifically, the spiral 0.8 and 0.6 sequences achieved significantly higher scores in 12 categories. Interreader agreement ranged from poor (alpha = -0.013, visualization of internal carotid artery segment C7) to substantial (alpha = 0.737, number of vessels visible, sagittal). As for the quantitative metrics, the CS 3.5 and all 3 spiral-TOFs presented with significantly worse CNR than the SENSE ([mean ± SD] SENSE 37.48 ± 7.13 vs CS 3.5 31.14 ± 5.97 vs spiral 19.77 ± 1.65 vs spiral 0.8 16.18 ± 2.14 vs spiral 0.6 10.37 ± 1.05). The CR values did n...

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Section: Mr Imagingmentioning

confidence: 99%

Ultrafast Intracranial Vessel Imaging With Non-Cartesian Spiral 3-Dimensional Time-of-Flight Magnetic Resonance Angiography at 1.5 T

et al. 2020

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“…Compressed SENSE (CS) 10 is a recent clinical implementation of the combined compressed sensing and parallel imaging approach, which uses wavelet sparsity as compression transform and the SENSE model for parallel imaging. Compressed SENSE has been demonstrated to accelerate the acquisition of 2D and 3D images in a diagnostic setting [11][12][13][14][15] .…”

Section: Introductionmentioning

confidence: 99%

Combined Compressed Sensing and SENSE to Enhance Radiation Therapy Magnetic Resonance Imaging Simulation

Zakian

Tyagi

et al. 2022

Advances in Radiation Oncology

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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“…Certain limitations of this study should be acknowledged: Firstly, the sample size was quite small yet comparable to that of other studies assessing the clinical feasibility of sequences [1,19,21,22,30,31]. Specifically, due to the limited sample size, certain pathologies only appeared very rarely (i.e.…”

Section: Plos Onementioning

confidence: 83%

“…Two sequences had an identical geometric resolution (voxel size: 0.82 x 0.82 x 1.2 mm 3 ); First the Cartesian CS 3.5 sequence (used routinely at our and other institutions [9]) relying on the Compressed SENSE acceleration technique with a variable density Poisson disk-sampling scheme followed by iterative reconstruction (Compressed SENSE factor 3.5, scan duration 03:06 min). Details concerning the Compressed SENSE technique can be found elsewhere [13,19,20,21,22,23]. Second a prototypical non-Cartesian Spiral-TOF (abbreviated Spiral) based on a stack of spirals with an in-plane spiral-out readout scheme (spiral interleaves 27, spiral acquisition window 10 ms, scan duration 01:32 min).…”

Section: Mr Imagingmentioning

confidence: 99%

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Clinical feasibility of ultrafast intracranial vessel imaging with non-Cartesian spiral 3D time-of-flight MR angiography at 1.5T: An intra-individual comparison study

Sartoretti

Schwenk

et al. 2020

PLoS ONE

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Compressed SENSE accelerated 3D T1w black blood turbo spin echo versus 2D T1w turbo spin echo sequence in pituitary magnetic resonance imaging

Cited by 23 publications

References 20 publications

Ultrafast Intracranial Vessel Imaging With Non-Cartesian Spiral 3-Dimensional Time-of-Flight Magnetic Resonance Angiography at 1.5 T

Ultrafast Intracranial Vessel Imaging With Non-Cartesian Spiral 3-Dimensional Time-of-Flight Magnetic Resonance Angiography at 1.5 T

Combined Compressed Sensing and SENSE to Enhance Radiation Therapy Magnetic Resonance Imaging Simulation

Clinical feasibility of ultrafast intracranial vessel imaging with non-Cartesian spiral 3D time-of-flight MR angiography at 1.5T: An intra-individual comparison study

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