Feasibility of accelerated simultaneous multislice diffusion‐weighted MRI of the prostate

Weiß, Jakob; Martirosian, Petros; Taron, Jana; Othman, Ahmed E.; Küstner, Thomas; Erb, Michael; Bedke, Jens; Bamberg, Fabian; Nikolaou, Konstantin; Notohamiprodjo, Mike

doi:10.1002/jmri.25665

Cited by 21 publications

(16 citation statements)

References 33 publications

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“…These studies hypothesized that the elevated noise floor in SMS-DWI may result in generally lower ADC values (21). However, several subsequent studies reported no significant differences in ADC values between SMS-accelerated sequences and C-DWI in several organs (15,16,26), which is in line with our results. Given that the ADC values of rectal cancer may reflect cancer aggressiveness by predicting the histologic T stage and differentiation (4,27,28) and that quantitative ADC measurement is useful in evaluating therapeutic response in rectal cancer after chemoradiotherapy (6)(7)(8), the comparable ADC values obtained with C-DWI and SMS-DWI in our study might be a prerequisite for reliable measurements and interpretation of ADC.…”

Section: Discussionsupporting

confidence: 92%

“…The lesion conspicuity for rectal cancer was worse in SMS3-DWI than in kjronline.org SMS2-DWI and C-DWI, which may indicate worse diagnostic ability of SMS3-DWI. These findings correspond with the results of previous studies in other organs (15,16,21). The poor image quality in SMS-DWI with a high acceleration factor can be explained by the increasing geometry factor, which is related to image heterogeneity and signal-tonoise ratio (SNR) reduction (22,23).…”

Section: Discussionsupporting

confidence: 90%

“…Several recent studies have reported the successful application of the SMS technique in DWI and diffusion tensor imaging of the brain, skeletal and cardiac muscles, liver, pancreas, kidney, pelvic lymph nodes, and prostate (13)(14)(15)(16)(17)(18)(19). However, the SMS technique has not yet been applied in DWI of the rectum.…”

Section: Introductionmentioning

confidence: 99%

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Feasibility of Simultaneous Multislice Acceleration Technique in Diffusion-Weighted Magnetic Resonance Imaging of the Rectum

et al. 2020

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Objective:To assess the feasibility of simultaneous multislice-accelerated diffusion-weighted imaging (SMS-DWI) of the rectum in comparison with conventional DWI (C-DWI) in rectal cancer patients. Materials and Methods:This study included 65 patients with initially-diagnosed rectal cancer. All patients underwent C-DWI and SMS-DWI with acceleration factors of 2 and 3 (SMS2-DWI and SMS3-DWI, respectively) using a 3T scanner. Acquisition times of the three DWI sequences were measured. Image quality in the three DWI sequences was reviewed by two independent radiologists using a 4-point Likert scale and subsequently compared using the Friedman test. Apparent diffusion coefficient (ADC) values for rectal cancer and the normal rectal wall were compared among the three sequences using repeated measures analysis of variance. Results: Acquisition times using C-DWI, SMS2-DWI, and SMS3-DWI were 173 seconds, 107 seconds, (38.2% shorter than C-DWI), and 77 seconds (55.5% shorter than C-DWI), respectively. For all image quality parameters other than distortion (margin sharpness, artifact, lesion conspicuity, and overall image quality), C-DWI and SMS2-DWI yielded better results than did SMS3-DWI (Ps < 0.001), with no significant differences observed between C-DWI and SMS2-DWI (Ps ≥ 0.054). ADC values of rectal cancer (p = 0.943) and normal rectal wall (p = 0.360) were not significantly different among C-DWI, SMS2-DWI, and SMS3-DWI. Conclusion: SMS-DWI using an acceleration factor of 2 is feasible for rectal MRI resulting in substantial reductions in acquisition time while maintaining diagnostic image quality and similar ADC values to those of C-DWI.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 90%

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Feasibility of Simultaneous Multislice Acceleration Technique in Diffusion-Weighted Magnetic Resonance Imaging of the Rectum

et al. 2020

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“…This is possibly because our study did not include cystic lesions and fibrocystic changes. Moreover, our results showed that no significant deviations of ADC values were observed between SMS rs-EPI and conventional rs-EPI in the breast, which is consistent with several recently published studies [ 25 , 26 , 28 , 38 , 39 ]. The use of SMS technology in our research has no effect on ADC measurement.…”

Section: Discussionsupporting

confidence: 92%

High-Resolution DWI with Simultaneous Multi-Slice Readout-Segmented Echo Planar Imaging for the Evaluation of Malignant and Benign Breast Lesions

et al. 2021

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To investigate the feasibility and effectiveness of high-resolution readout-segmented echo planar imaging (rs-EPI), diffusion-weighted imaging (DWI) is used simultaneously with multi-slice (SMS) imaging (SMS rs-EPI) for the differentiation of breast malignant and benign lesions in comparison to conventional rs-EPI on a 3T MR scanner. A total of 102 patients with 113 breast lesions underwent bilateral breast MRI using a prototype SMS rs-EPI sequence and a conventional rs-EPI sequence. Subjective image quality was assessed using a 5-point Likert scale (1 = poor, 5 = excellent). Signal-to-noise ratio (SNR), lesion contrast-to-noise ratio (CNR) and apparent diffusion coefficients (ADC) value of the lesion were measured for comparison. Receiver operating characteristic curve analysis was performed to evaluate the diagnosis performance of ADC, and the corresponding area under curve (AUC) was calculated. The image quality scores in anatomic distortion, lesion conspicuity, sharpness of anatomical details and overall image quality of SMS rs-EPI were significantly higher than those of conventional rs-EPI. CNR was enhanced in the high-resolution SMS rs-EPI acquisition (6.48 ± 1.71 vs. 4.23 ± 1.49; p < 0.001). The mean ADC value was comparable in SMS rs-EPI and conventional rs-EPI (benign 1.45 × 10−3 vs. 1.43 × 10−3 mm2/s, p = 0.702; malignant 0.91 × 10−3 vs. 0.89 × 10−3 mm2/s, p = 0.076). The AUC was 0.957 in SMS rs-EPI and 0.983 in conventional rs-EPI. SMS rs-EPI technique allows for higher spatial resolution and slight reduction of scan time in comparison to conventional rs-EPI, which has potential for better differentiation between malignant and benign lesions of the breast.

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“…The underlying technique is based on the excitation of multiple slices simultaneously and the subsequent antialiasing to reconstruct the magnitude images. Simultaneous multislice sequences have successfully been tested for DWI of the human brain, 18 the breast, 19 the prostate, 20 the liver, the pancreas, 21 and the kidneys. 22 However, the SMS technique shows some limitations regarding image quality and signal-to-noise ratio due to aliasing problems between the simultaneous excited neighboring slices, which may affect diffusion measurements and IVIM analysis.…”

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confidence: 99%

Intravoxel Incoherent Motion Analysis of Abdominal Organs

et al. 2018

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Feasibility of accelerated simultaneous multislice diffusion‐weighted MRI of the prostate

Abstract: 3 Technical Efficacy: Stage 1 J. Magn. Reson. Imaging 2017;46:1507-1515.

Cited by 21 publications

References 33 publications

Feasibility of Simultaneous Multislice Acceleration Technique in Diffusion-Weighted Magnetic Resonance Imaging of the Rectum

Feasibility of Simultaneous Multislice Acceleration Technique in Diffusion-Weighted Magnetic Resonance Imaging of the Rectum

High-Resolution DWI with Simultaneous Multi-Slice Readout-Segmented Echo Planar Imaging for the Evaluation of Malignant and Benign Breast Lesions

Intravoxel Incoherent Motion Analysis of Abdominal Organs

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