Six-Fold Acceleration of High-Spatial Resolution 3D SPACE MRI of the Knee Through Incoherent k-Space Undersampling and Iterative Reconstruction—First Experience

Fritz, Jan; Raithel, Esther; Thawait, Gaurav K.; Gilson, Wesley D.; Papp, Derek F.

doi:10.1097/rli.0000000000000240

Cited by 90 publications

(55 citation statements)

References 28 publications

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“…With the use of advanced acceleration techniques, 3D sequences might improve the efficiency of peripheral joint imaging with similar or better image quality than 2D MRI. In addition, 3D sequences acquire a volumetric isotropic data set, which can be used for multiplanar reformation (MPR), eliminating the need to obtain images with identical tissue contrast in multiple planes . 3D sequences also provide thin, continuous sections through the knee joint, which reduces the effects of partial volume averaging .…”

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confidence: 99%

Cruciate ligament injuries of the knee: A meta‐analysis of the diagnostic performance of 3D MRI

Shakoor

Guermazi

Kijowski

et al. 2019

Magnetic Resonance Imaging

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Background Despite the advantages of 3D MRI in evaluation of cruciate ligament injuries, its use in clinical practice is still a matter of debate due to controversy regarding its diagnostic performance. Purpose To evaluate the diagnostic performance of 3D MRI for detecting cruciate ligament injuries, using surgery or arthroscopy as the reference standard. Study Type Meta‐analysis. Population Patients with knee pain. Field Strength/Sequence 3D and 2D MRI. Assessment Four databases were reviewed according to PRISMA guidelines. Statistical Tests Pooled values of sensitivity, specificity, and diagnostic odds ratio (DOR) were calculated using a random‐effects model. To investigate the effect of relevant covariates on the diagnostic performance of 3D MRI, sensitivity analysis was performed using meta‐regression to calculate relative DOR. Results Of 731 initially identified reports, 22 (1298 3D MRI examinations) met our criteria and were included. Pooled estimates of sensitivity and specificity for 3D sequences were 91.4% (95% confidence interval [CI]: 87.4–94.2%) and 96.1% (95% CI: 93.8–97.6%), respectively. Fourteen studies also reported the results of 2D MRI, with pooled sensitivity of 90.6% (95% CI: 84.1–94.6%) and specificity of 97.1% (95% CI: 94.7–98.4%), which were not significantly different from 3D sequences. 3D MRI sequences performed using 3T scanners had significantly higher DOR compared with 3D sequences performed on 1.5T or lower scanners (relative DOR: 6.04, P = 0.01). Data Conclusion 3D MRI is equivalent to 2D MRI in the diagnosis of cruciate ligament injuries. The use of 3T scanners improves the performance of 3D MRI for detecting cruciate ligament injuries. Level of Evidence: 2 Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2019;50:1545–1560.

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confidence: 99%

Cruciate ligament injuries of the knee: A meta‐analysis of the diagnostic performance of 3D MRI

Shakoor

Guermazi

Kijowski

et al. 2019

Magnetic Resonance Imaging

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“…The center of k -space was fully sampled to allow computation of a coil sensitivity map for image reconstruction [23]. A fully sampled k -space center of size 24 × 24 was used for coil sensitivity map estimation in this work.…”

Section: Methodsmentioning

confidence: 99%

“…The reconstruction used in this paper combines CS and PI by minimizing the following cost function as described in [23]:

\hat{x} = arg min_{x} \frac{1}{2} \sum_{n = 1}^{N} y_{n} - F_{u} {({CSM}_{n} ⊙ x)}_{2}^{2} + λ W x_{1},

…”

Section: Methodsmentioning

confidence: 99%

“…CS has been used to accelerate black blood extracranial T1 weighted carotid plaque imaging using 3D gradient echo sequences [16, 17], and also for the T2 mapping of the carotid plaque using a 3D fast-spin-echo (CUBE) technique [18]. The combination of CS and PI has also been used in different clinical applications, including the breast [19], carotid plaque [20], abdomen [21] and musculoskeletal disorders [22, 23]. …”

Section: Introductionmentioning

confidence: 99%

“…Poisson-Disk sampling provides a homogeneous, random distribution of samples in k -space that is suitable for CS [24]. Previously, a CS-SPACE sequence was developed using a variable-density Poisson-disc pattern for under-sampling, resulting in sixfold acceleration for imaging of the knee [23]. However, there has been little reported work for using CS for accelerated intracranial vessel wall imaging.…”

Section: Introductionmentioning

confidence: 99%

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Accelerated whole brain intracranial vessel wall imaging using black blood fast spin echo with compressed sensing (CS-SPACE)

Zhu

Tian

Chen

et al. 2017

Magn Reson Mater Phy

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Objective Develop and optimize an accelerated, high-resolution (0.5 mm isotropic) 3D black blood MRI technique to reduce scan time for whole-brain intracranial vessel wall imaging. Materials and methods A 3D accelerated T1-weighted fast-spin-echo prototype sequence using compressed sensing (CS-SPACE) was developed at 3T. Both the acquisition [echo train length (ETL), under-sampling factor] and reconstruction parameters (regularization parameter, number of iterations) were first optimized in 5 healthy volunteers. Ten patients with a variety of intracranial vascular disease presentations (aneurysm, atherosclerosis, dissection, vasculitis) were imaged with SPACE and optimized CS-SPACE, pre and post Gd contrast. Lumen/wall area, wall-to-lumen contrast ratio (CR), enhancement ratio (ER), sharpness, and qualitative scores (1–4) by two radiologists were recorded. Results The optimized CS-SPACE protocol has ETL 60, 20% k-space under-sampling, 0.002 regularization factor with 20 iterations. In patient studies, CS-SPACE and conventional SPACE had comparable image scores both pre- (3.35 ± 0.85 vs. 3.54 ± 0.65, p = 0.13) and post-contrast (3.72 ± 0.58 vs. 3.53 ± 0.57, p = 0.15), but the CS-SPACE acquisition was 37% faster (6:48 vs. 10:50). CS-SPACE agreed with SPACE for lumen/wall area, ER measurements and sharpness, but marginally reduced the CR. Conclusion In the evaluation of intracranial vascular disease, CS-SPACE provides a substantial reduction in scan time compared to conventional T1-weighted SPACE while maintaining good image quality.

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Fast comprehensive single‐sequence four‐dimensional pediatric knee MRI with T₂ shuffling

Bao

Tamir

Young

et al. 2016

Magnetic Resonance Imaging

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Six-Fold Acceleration of High-Spatial Resolution 3D SPACE MRI of the Knee Through Incoherent k-Space Undersampling and Iterative Reconstruction—First Experience

Cited by 90 publications

References 28 publications

Cruciate ligament injuries of the knee: A meta‐analysis of the diagnostic performance of 3D MRI

Cruciate ligament injuries of the knee: A meta‐analysis of the diagnostic performance of 3D MRI

Accelerated whole brain intracranial vessel wall imaging using black blood fast spin echo with compressed sensing (CS-SPACE)

Fast comprehensive single‐sequence four‐dimensional pediatric knee MRI with T₂ shuffling

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Six-Fold Acceleration of High-Spatial Resolution 3D SPACE MRI of the Knee Through Incoherent k-Space Undersampling and Iterative Reconstruction—First Experience

Cited by 90 publications

References 28 publications

Cruciate ligament injuries of the knee: A meta‐analysis of the diagnostic performance of 3D MRI

Cruciate ligament injuries of the knee: A meta‐analysis of the diagnostic performance of 3D MRI

Accelerated whole brain intracranial vessel wall imaging using black blood fast spin echo with compressed sensing (CS-SPACE)

Fast comprehensive single‐sequence four‐dimensional pediatric knee MRI with T2 shuffling

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Fast comprehensive single‐sequence four‐dimensional pediatric knee MRI with T₂ shuffling