Comparison of TGSE-BLADE DWI, RESOLVE DWI, and SS-EPI DWI in healthy volunteers and patients after cerebral aneurysm clipping

Okuchi, Sachi; Fushimi, Yasutaka; Yoshida, Kazumichi; Nakajima, Satoshi; Sakata, Akihiko; Hinoda, Takuya; Otani, Sayo; Sagawa, Hajime; Zhou, Kun; Yamao, Yukihiro; Okawa, Masakazu; Nakamoto, Yuji

doi:10.1038/s41598-022-22760-6

Cited by 9 publications

(7 citation statements)

References 33 publications

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“…Distortion was also quantitatively less near the air-bone interfaces (e.g., frontal lobe, temporal tip, and pons) in TGSE-BLADE-DWI with SMS. These ndings align with those of a prior study that used TGSE-BLADE DWI without acceleration technique 9 . Their scores for lesion conspicuity and diagnostic con dence in patients with acute or subacute infarction were lower in SS-EPI DWI than TGSE-BLADE DWI; however, median score was 4.0 for each sequence.…”

Section: Discussionsupporting

confidence: 90%

“…Taken together, these imaging image characteristics indicate the potential utility of TGSE-BLADE DWI with SMS for diagnosis of acute infarction. In previous studies with TGSE-BLADE DWI, scan time was consistently 4 to 5 minutes [4][5][6][7][8][9] . The present study reports the rst attempt to signi cantly reduce acquisition time to approximately 1 minute.…”

Section: Discussionmentioning

confidence: 99%

“…(c) Quantitative analysis Distortion was examined quantitatively by measuring the displacement between T2WI and each DWI sequence in three parts of the brain: frontal lobe near frontal sinus, temporal tip, and pons 9 .…”

Section: Image Acquisitionmentioning

confidence: 99%

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Comparison of SS-EPI DWI and one-minute TGSE-BLADE DWI for diagnosis of acute infarction

Okuchi,

Fushimi,

Sakata

et al. 2024

Preprint

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The efficacy of 2D turbo gradient- and spin-echo diffusion-weighted imaging with non-Cartesian BLADE trajectory (TGSE-BLADE DWI) has not been well studied for acute stroke due to its long acquisition time.This study was performed to compare distortion, artifacts and image quality between single-shot echo planar imaging (SS-EPI) DWI and TGSE-BLADE DWI with acquisition time reduced to 1 minute by simultaneous multi-slice (SMS) imaging, and to evaluate the diagnostic performance of TGSE-BLADE DWI for acute infarctions. Total 104 patients with a past history of stroke or symptoms suspicious for acute infarction or who had undergone surgery for brain tumor within two days were prospectively enrolled. Ten lesions in 9 patients were diagnosed as acute or subacute infarction and were detectable only in TGSE-BLADE DWI but not in SS-EPI DWI. Scores for geometric distortion, susceptibility artifacts, overall image quality, lesion conspicuity and diagnostic confidence were lower for SS-EPI DWI than TGSE-BLADE DWI (p≤.001). Distortion was significantly worse in SS-EPI DWI than TGSE-BLADE DWI (p<.001). SNR of centrum semiovale was significantly higher in SS-EPI DWI than TGSE-BLADE DWI (p<0.001). One-minute TGSE-BLADE DWI showed better image quality than SS-EPI DWI in terms of distortion and artifacts, and higher diagnostic performance for acute infarctions.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

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Comparison of SS-EPI DWI and one-minute TGSE-BLADE DWI for diagnosis of acute infarction

Okuchi,

Fushimi,

Sakata

et al. 2024

Preprint

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“…In addition to reduction in susceptibility artifacts and distortion, RDC-DWI produced high-contrast images and had the highest SNR among the three DWIs (AP-DWI, B 0 -corrected-DWI, and RDC-DWI) even with slice thickness of 1.2 mm, which was achieved by two-fold number of excitations, combining images with AP and PA phase-encoding directions. Measurement of precise SNR in DWI after application of distortion correction is complicated; in the present study, however, RDC-DWI provided images with high SNR, whereas in previous studies, no DWI technique has achieved SNR higher than that of conventional EPI-DWI [ 8 , 10 , 12 , 26 ]. Furthermore, compared with previously reported DWI techniques with distortion reduction, slice thickness of 1.2 mm in RDC-DWI resulted in higher spatial resolution with distortion correction and enabled observation from multiple directions using multiplanar reconstruction of the pituitary lesion and surrounding normal structures [ 7 , 8 , 10 – 13 ].…”

Section: Discussionmentioning

confidence: 57%

Thin-slice reverse encoding distortion correction DWI facilitates visualization of non-functioning pituitary neuroendocrine tumor (PitNET)/pituitary adenoma and surrounding normal structures

Ito,

Okuchi,

Fushimi

et al. 2024

Eur Radiol Exp

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Background To evaluate the clinical usefulness of thin-slice echo-planar imaging (EPI)-based diffusion-weighted imaging (DWI) with an on-console distortion correction technique, termed reverse encoding distortion correction DWI (RDC-DWI), in patients with non-functioning pituitary neuroendocrine tumor (PitNET)/pituitary adenoma. Methods Patients with non-functioning PitNET/pituitary adenoma who underwent 3-T RDC-DWI between December 2021 and September 2022 were retrospectively enrolled. Image quality was compared among RDC-DWI, DWI with correction for distortion induced by B0 inhomogeneity alone (B0-corrected-DWI), and original EPI-based DWI with anterior-posterior phase-encoding direction (AP-DWI). Susceptibility artifact, anatomical visualization of cranial nerves, overall tumor visualization, and visualization of cavernous sinus invasion were assessed qualitatively. Quantitative assessment of geometric distortion was performed by evaluation of anterior and posterior displacement between each DWI and the corresponding three-dimensional T2-weighted imaging. Signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR), and apparent diffusion coefficient values were measured. Results Sixty-four patients (age 70.8 ± 9.9 years [mean ± standard deviation]; 33 females) with non-functioning PitNET/pituitary adenoma were evaluated. In terms of susceptibility artifacts in the frontal and temporal lobes, visualization of left trigeminal nerve, overall tumor visualization, and anterior displacement, RDC-DWI performed the best and B0-corrected-DWI performed better than AP-DWI. The right oculomotor and right trigeminal nerves were better visualized by RDC-DWI than by B0-corrected-DWI and AP-DWI. Visualization of cavernous sinus invasion and posterior displacement were better by RDC-DWI and B0-corrected-DWI than by AP-DWI. SNR and CNR were the highest for RDC-DWI. Conclusions RDC-DWI achieved excellent image quality regarding susceptibility artifact, geometric distortion, and tumor visualization in patients with non-functioning PitNET/pituitary adenoma. Relevance statement RDC-DWI facilitates excellent visualization of the pituitary region and surrounding normal structures, and its on-console distortion correction technique is convenient. RDC-DWI can clearly depict cavernous sinus invasion of PitNET/pituitary adenoma even without contrast medium. Key points • RDC-DWI is an EPI-based DWI technique with a novel on-console distortion correction technique. • RDC-DWI corrects distortion due to B0 field inhomogeneity and eddy current. • We evaluated the usefulness of thin-slice RDC-DWI in non-functioning PitNET/pituitary adenoma. • RDC-DWI exhibited excellent visualization in the pituitary region and surrounding structures. • In addition, the on-console distortion correction of RDC-DWI is clinically convenient. Graphical Abstract

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“…The results demonstrate a clear improvement of image distortion, particularly at locations that tend to cause such severe artifacts regularly. These mainly include areas where bone, soft tissues or air interface and thereby can cause large differences in magnetic susceptibility [ 14 , 15 ]. As a notable consequence, this can lead to a more difficult delineation or underestimation of ischemic changes in brain MRI [ 16 – 18 ].…”

Section: Discussionmentioning

confidence: 99%

Reduction of Distortion Artifacts in Brain MRI Using a Field Map-based Correction Technique in Diffusion-weighted Imaging

Grauhan,

Grünebach,

Brockstedt

et al. 2023

Clin Neuroradiol

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Purpose The aim of this study was to evaluate the image quality and feasibility of a field map-based technique to correct for susceptibility-induced geometric distortions which are typical for diffusion EPI brain imaging. Methods We prospectively included 52 patients during clinical routine in this single-center study. All scans were performed on a 3T MRI. Patients’ indications for MRI mainly consisted of suspected stroke due to the clinical presentation. For the morphological comparison of the corrected and uncorrected EPI diffusion, three experienced radiologists assessed the image quality of the sequences in a blinded and randomized fashion using a Likert scale (1 being poor; 5 being excellent). To ensure comparability of the two methods, an additional quantitative analysis of the apparent diffusion coefficient (ADC) was performed. Results Corrected EPI diffusion was rated significantly superior in all the selected categories: overall level of artifacts (p < 0.001), degree of distortion at the frontal, temporal, occipital and brainstem levels (p < 0.001), conspicuousness of ischemic lesions (p < 0.001), image quality (p < 0.001), naturality (p < 0.001), contrast (p < 0.001), and diagnostic confidence (p < 0.001). Conclusion Corrected EPI diffusion offers a significant reduction of geometric distortion in all evaluated brain regions and an improved conspicuousness of ischemic lesions. Image quality, overall artifacts, naturality, contrast and diagnostic confidence were also rated superior in comparison to uncorrected EPI diffusion.

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Comparison of TGSE-BLADE DWI, RESOLVE DWI, and SS-EPI DWI in healthy volunteers and patients after cerebral aneurysm clipping

Cited by 9 publications

References 33 publications

Comparison of SS-EPI DWI and one-minute TGSE-BLADE DWI for diagnosis of acute infarction

Comparison of SS-EPI DWI and one-minute TGSE-BLADE DWI for diagnosis of acute infarction

Thin-slice reverse encoding distortion correction DWI facilitates visualization of non-functioning pituitary neuroendocrine tumor (PitNET)/pituitary adenoma and surrounding normal structures

Reduction of Distortion Artifacts in Brain MRI Using a Field Map-based Correction Technique in Diffusion-weighted Imaging

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