Non–Contrast-Enhanced Magnetic Resonance Angiography Using T2-Weighted 3-Dimensional Fat-Suppressed Turbo Spin Echo (SPACE)

Song, Qiong; Zeng, Meng-Su; Chen, Caizhong; Ma, Jing; Yun, Hong; Rao, Sheng-Xiang; Yao, Xiuzhong

doi:10.1097/rct.0b013e31826999df

Cited by 7 publications

(2 citation statements)

References 15 publications

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“…SPACE is a recently introduced 3D T2W TSE sequence with variable flip-angle refocusing pulses that has been developed by Mugler et al ( 16 ). Several potential fields of application were also reported in the medical literature including hepatobiliary system, spine, and pelvic organs ( 10 , 11 , 12 , 17 , 18 ). Also, some potential advantages of this sequence for CSF flow over other techniques include the use of thinner slice thickness without interslice gaps, high sensitivity of flow, and high signal-to-noise ratio.…”

Section: Discussionmentioning

confidence: 98%

Evaluation of Aqueductal Patency in Patients with Hydrocephalus: Three-Dimensional High-Sampling-Efficiency Technique (SPACE) versus Two-Dimensional Turbo Spin Echo at 3 Tesla

et al. 2014

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ObjectiveTo compare the accuracy of diagnosing aqueductal patency and image quality between high spatial resolution three-dimensional (3D) high-sampling-efficiency technique (sampling perfection with application optimized contrast using different flip angle evolutions [SPACE]) and T2-weighted (T2W) two-dimensional (2D) turbo spin echo (TSE) at 3-T in patients with hydrocephalus.Materials and MethodsThis retrospective study included 99 patients diagnosed with hydrocephalus. T2W 3D-SPACE was added to the routine sequences which consisted of T2W 2D-TSE, 3D-constructive interference steady state (CISS), and cine phase-contrast MRI (PC-MRI). Two radiologists evaluated independently the patency of cerebral aqueduct and image quality on the T2W 2D-TSE and T2W 3D-SPACE. PC-MRI and 3D-CISS were used as the reference for aqueductal patency and image quality, respectively. Inter-observer agreement was calculated using kappa statistics.ResultsThe evaluation of the aqueductal patency by T2W 3D-SPACE and T2W 2D-TSE were in agreement with PC-MRI in 100% (99/99; sensitivity, 100% [83/83]; specificity, 100% [16/16]) and 83.8% (83/99; sensitivity, 100% [67/83]; specificity, 100% [16/16]), respectively (p < 0.001). No significant difference in image quality between T2W 2D-TSE and T2W 3D-SPACE (p = 0.056) occurred. The kappa values for inter-observer agreement were 0.714 for T2W 2D-TSE and 0.899 for T2W 3D-SPACE.ConclusionThree-dimensional-SPACE is superior to 2D-TSE for the evaluation of aqueductal patency in hydrocephalus. T2W 3D-SPACE may hold promise as a highly accurate alternative treatment to PC-MRI for the physiological and morphological evaluation of aqueductal patency.

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Section: Discussionmentioning

confidence: 98%

Evaluation of Aqueductal Patency in Patients with Hydrocephalus: Three-Dimensional High-Sampling-Efficiency Technique (SPACE) versus Two-Dimensional Turbo Spin Echo at 3 Tesla

et al. 2014

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“…This study showed that fat fraction was greater for chylous versus nonchylous fluids, and in vivo fat fraction was correlated with triglyceride content ( 15 ). Sequences such as volumetric interpolated breath-hold examination with fat saturation (VIBE-FS) are also promising techniques for the observation of fatty lesions ( 16 , 17 ). In the future, head-to-head comparisons can be conducted to directly compare different fat-sensitive sequences in the detection and quantification of fatty lesions in SIJ.…”

Section: Discussionmentioning

confidence: 99%

The diagnostic value of morphological features of fat deposition of sacroiliac joint steatosis in axial spondyloarthritis

Zhao,

Lin,

Liu

et al. 2023

Front. Med.

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BackgroundFindings of fatty lesions in the context of other imaging manifestations, especially bone marrow edema and erosions can effectively assist in the diagnosis of axSpA. Chemical shift-encoded MRI is a sequence which allows for the quantification of fat signal and has been applied in the imaging evaluation of the SIJ in axSpA. The objective of this study was to investigate the diagnostic performance of morphological features of fatty lesions visualized by CSE-MRI in the imaging evaluation of SIJ in axSpA.MethodsFatty lesions with morphological features (subchondral, homogeneity and distinct border) were assessed and recorded as a binary variable in each quadrant of the SIJ. Sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) were calculated for different morphological features as well as the anatomical distribution in patients with nr-axSpA and r-axSpA. T1-weighted images and CSE-MRI fat fraction maps were directly compared in the recognition of different morphological features.ResultsEighty-two patients [non-SpA (n = 21), nr-axSpA (n = 23), r-axSpA (n = 38)] with lower back pain (LBP) were enrolled. Presence of the three morphological features of fatty lesions had a specificity of 90.48% in axSpA. The sensitivities of being subchondral, homogeneity and distinct border were 52.17, 39.13 and 39.13% in nr-axSpA on T1-weighted images. For patients with r-axSpA, the sensitivities reached 86.84, 76.32 and 57.89%. No significant difference was found in the distribution of fatty lesions between T1-weighted images and CSE-MRI. However, CSE-MRI fat fraction maps could detect significantly more fatty lesions with homogeneity (p = 0.0412) and distinct border (p = 0.0159) than T1-weighted images in the sacroiliac joint, but not subchondral lesions (p = 0.6831).ConclusionThe homogeneity and distinct border are more relevant for the diagnosis of axSpA. Moreover, CSE-MRI could detect more typical morphological features of fatty lesions than T1-weighted images in showing these two features. The presence of all three features was more likely to be indicative of axSpA.

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Noncontrast Magnetic Resonance Angiography Clinical Application in Pre–Liver Transplant Recipients With Impaired Renal Function

Huang¹,

Liao²,

Chen³

et al. 2020

Liver Transpl

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Image evaluation of the vascular architecture is essential before living donor liver transplantation (LDLT). However, the use of contrast-enhanced study in recipients with impaired renal function is limited due to the risk of acute kidney injury and nephrogenic systemic fibrosis. Therefore, a contrast medium-free method is both valuable and necessary for preoperative vascular evaluation. Recent literature reported inflow-sensitive inversion recovery (IFIR) magnetic resonance angiography (MRA) without the use of a contrast medium to be a reproducible and noninvasive tool to assess hepatic vasculature with adequate-to-good image quality. The purpose of this study is to clinically apply IFIR MRA preoperatively in LDLT recipients. We retrospectively reviewed 31 LDLT recipients with renal function impairment from March 2013 to August 2018 who received IFIR MRA as a pretransplant vascular architecture evaluation and who underwent a subsequent LDLT. The image findings were assessed for subjective image quality and were compared with intraoperative findings. Our results showed that the pretransplant vascular anatomy was well correlated with intraoperative findings in all recipients. Successful ratings with image quality scores ≥2 for proper hepatic arteries (PHAs), portal veins, and inferior vena cavas (IVCs) were 100.0%, 96.8%, and 93.5%, respectively. Readable ratings with imaging quality score ≥1 for left and right hepatic arteries and gastroepiploic arteries were 83.9%, 96.7%, and 22.6%, respectively. We also found that recipients with higher Model for End-Stage Liver Disease scores (>23) had lower image quality scores for PHAs (P = 0.003) and IVCs (P = 0.046). However, images were still satisfactory for pre-liver transplantation (LT) vascular evaluation. In conclusion, in pre-LT recipients with impaired renal function, IFIR MRA is a feasible and reproducible image modality.Liver Transplantation 26 196-202 2020 AASLD.

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Non–Contrast-Enhanced Magnetic Resonance Angiography Using T2-Weighted 3-Dimensional Fat-Suppressed Turbo Spin Echo (SPACE)

Abstract: The SPACE has a comparable ability in demonstrating portosystemic and portohepatic collaterals as well as VIBE does.

Cited by 7 publications

References 15 publications

Evaluation of Aqueductal Patency in Patients with Hydrocephalus: Three-Dimensional High-Sampling-Efficiency Technique (SPACE) versus Two-Dimensional Turbo Spin Echo at 3 Tesla

Evaluation of Aqueductal Patency in Patients with Hydrocephalus: Three-Dimensional High-Sampling-Efficiency Technique (SPACE) versus Two-Dimensional Turbo Spin Echo at 3 Tesla

The diagnostic value of morphological features of fat deposition of sacroiliac joint steatosis in axial spondyloarthritis

Noncontrast Magnetic Resonance Angiography Clinical Application in Pre–Liver Transplant Recipients With Impaired Renal Function

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