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Yoshida T, Urikura A, Endo M. Vendor-Specific Correction Software for Apparent Diffusion Coefficient Bias Due to Gradient Nonlinearity in Breast Diffusion-Weighted Imaging Using Ice-Water Phantom. J Comput Assist Tomogr 2024:00004728-990000000-00329. [PMID: 38896760 DOI: 10.1097/rct.0000000000001632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
OBJECTIVE This study aimed to evaluate a vendor-specific correction software for apparent diffusion coefficient (ADC) bias due to gradient nonlinearity in breast diffusion-weighted magnetic resonance imaging using an ice-water phantom. METHODS The phantom consists of 5 plastic tubes with a length of 100 mm and a diameter of 15 mm, filled with distilled water and immersed in an ice-water bath. Diffusion-weighted images were acquired by echo-planar imaging sequence on a 3.0-T scanner. ADC maps with and without correction were calculated using 4 b-values (0, 100, 600, and 800 s/mm2). The mean ADCs were measured using a rectangular profile with 5 × 40 pixels in the anterior-posterior (AP) and a square region of interest with 5 × 5 pixels in the right-left (RL) and superior-inferior (SI) directions on the ADC map. ADC was compared with and without correction using a paired t test. Additionally, ADC of the ice-water phantom was measured at the magnet isocenter. RESULTS ADC increased in the AP and RL directions and decreased in the SI direction with increasing distance from the isocenter before correction. After the correction, ADC at the off-center positions in the AP, RL, and SI directions was reduced to within 5% of the expected value. There were significant differences in the ADC at the off-center positions without and with correction (P < 0.001); however, ADC at the magnet isocenter did not vary after correction (1.08 ± 0.02 × 10-3 mm2/s). CONCLUSIONS The vendor-specific software corrected the ADC bias due to gradient nonlinearity at the off-center positions in the AP, RL, and SI directions. Therefore, the software will contribute to the accurate ADC assessment in breast DWI.
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Affiliation(s)
- Tsukasa Yoshida
- From the Department of Diagnostic Radiology, Shizuoka Cancer Center, Shizuoka, Japan
| | - Atsushi Urikura
- Department of Radiological Technology, Radiological Diagnosis, National Cancer Center Hospital, Tokyo, Japan
| | - Masahiro Endo
- From the Department of Diagnostic Radiology, Shizuoka Cancer Center, Shizuoka, Japan
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Yin M, Cao G, Lv S, Sun Z, Li M, Wang H, Yue X. Intravoxel incoherent motion diffusion-weighted imaging of solitary pulmonary lesions: initial study with gradient- and spin-echo sequences. Clin Radiol 2024; 79:296-302. [PMID: 38307815 DOI: 10.1016/j.crad.2024.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 11/15/2023] [Accepted: 01/02/2024] [Indexed: 02/04/2024]
Abstract
AIM To evaluate the feasibility and image quality of intravoxel incoherent motion diffusion-weighted imaging (IVIM) using gradient- and spin-echo (GRASE) in solitary pulmonary lesions (SPLs) compared to echo planar imaging (EPI) and turbo spin-echo (TSE) at 3 T. MATERIALS AND METHODS Forty-two patients with SPLs underwent lung magnetic resonance imaging (MRI) using TSE-IVIM, GRASE-IVIM, and EPI-IVIM at 3 T. Signal ratio (SR), contrast ratio (CR), and image distortion ratio (DR) of three sequences were compared. The reproducibility and repeatability of the apparent diffusion coefficient (ADC) and IVIM-derived parameters were assessed using the interclass correlation coefficient (ICC) and coefficient of variation (CV). The repeatability of the ADC and IVIM-derived parameters between all sequences was evaluated using the Bland-Altman method. RESULTS EPI-IVIM had a higher SR, lower CR, and higher DR (p<0.05); however, there was no significant difference between TSE-IVIM and GRASE-IVIM (p>0.05). Compared to the D and f values of TSE-IVIM (ICC lower limit >0.90), GRASE-IVIM and EPI-IVIM showed poor reproducibility (ICC lower limit<0.90). The repeatability of the ADC and D values obtained by TSE-IVIM (CV, 1.93-2.96% and 2.44-3.18%, respectively) and GRASE-IVIM (CV, 2.56-3.12% and 3.21-3.51%, respectively) were superior to those of EPI-IVIM (CV, 10.03-10.2% and 11.30-11.57%). The repeatability of D∗ and f values for all sequences was poor. Bland-Altman analysis showed wide limits of agreement between the ADC and IVIM-derived parameters for all sequences. CONCLUSION GRASE-IVIM reduced the DR, improved the stability of the ADC and D values on repeated scans, and had the shortest scanning time.
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Affiliation(s)
- M Yin
- Clinical Medical College of Jining Medical University, Jining 272000, China
| | - Guanjie Cao
- Department of Medical Imaging, Affiliated Hospital of Jining Medical University, Jining 272029, China
| | - S Lv
- Clinical Medical College of Jining Medical University, Jining 272000, China.
| | - Z Sun
- Department of Medical Imaging, Affiliated Hospital of Jining Medical University, Jining 272029, China
| | - M Li
- Department of Medical Imaging, Affiliated Hospital of Jining Medical University, Jining 272029, China
| | - H Wang
- Department of Medical Imaging, Affiliated Hospital of Jining Medical University, Jining 272029, China
| | - X Yue
- Philips Healthcare, Beijing 100600, China
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Development of a standard phantom for diffusion-weighted magnetic resonance imaging quality control studies: A review. POLISH JOURNAL OF MEDICAL PHYSICS AND ENGINEERING 2022. [DOI: 10.2478/pjmpe-2022-0020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Abstract
Various materials and compounds have been used in the design of diffusion-weighted magnetic resonance imaging (DWMRI) phantoms to mimic biological tissue properties, including diffusion. This review thus provides an overview of the preparations of the various DW-MRI phantoms available in relation to the limitations and strengths of materials/solutions used to fill them. The narrative review conducted from relevant databases shows that synthesizing all relevant compounds from individual liquids, gels, and solutions based on their identified strengths could contribute to the development of a novel multifunctional DW-MRI phantom. The proposed multifunctional material at varied concentrations, when filled into a multi-compartment Perspex container of cylindrical or spherical geometry, could serve as a standard DW-MRI phantom. The standard multifunctional phantom could potentially provide DW-MRI quality control test parameters in one study session.
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With 3 Types of Respiratory Acquisition: 3.0 T Respiratory Triggered Acquisition Can Obtain Higher Quality DWI Images of the Upper Abdomen. CONTRAST MEDIA & MOLECULAR IMAGING 2022; 2022:9579145. [PMID: 35854769 PMCID: PMC9288320 DOI: 10.1155/2022/9579145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 05/19/2022] [Accepted: 06/21/2022] [Indexed: 11/24/2022]
Abstract
Objective To compare the effects of 1.5 T and 3.0 T upper abdominal magnetic resonance diffusion-weighted imaging (DWI) under three acquisition techniques of breath holding, breath triggering, and free breathing, so as to provide a reference for the usage of upper abdominal DWI scanning. Methods Twenty-one healthy subjects were selected from social volunteers and underwent routine magnetic resonance imaging (MRI) and DWI on 1.5 T and 3.0 T, respectively. DWI included three acquisition methods: breath triggering, breath holding, and free breathing, and b values were 100 and 800. The DWI image artifacts, image quality, apparent diffusion coefficient (ADC), and the signal-to-noise ratio (SNR) obtained through the three acquisition methods were compared. Results The 1.5 T free-breathing DWI image quality was the best, while the 3.0 T had the best breath-triggered DWI image quality. The 3.0 T breath-triggered DWI image quality was better than the 1.5 T free-breathing DWI image (P=0.012), and the SNR of free-breathing DWI was the highest. Between the two field intensities, the SNR of the liver in the 3.0 T group was much lower than that in the 1.5 T group, and obvious differences were not observed in ADC values of normal liver, gallbladder, kidney, spleen, and pancreas. Conclusion 3.0 T respiratory-triggered acquisition can obtain higher quality DWI images. But in the case of only 1.5 T field strength, free-breathing acquisition of DWI images should be selected.
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Jang JS, Lee HB, Suh CH, Lee MH. Image quality and acquisition time assessments for phase oversampling in compressed sensing sensitivity encoding: Comparison with conventional SENSE. J Appl Clin Med Phys 2021; 23:e13509. [PMID: 34953027 PMCID: PMC8833279 DOI: 10.1002/acm2.13509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 12/05/2021] [Accepted: 12/06/2021] [Indexed: 11/09/2022] Open
Abstract
This study compared sensitivity encoding (SENSE) and compressed sensing sensitivity encoding (CS-SENSE) for phase oversampling distance and assessed its impact on image quality and image acquisition time. The experiment was performed with a large diameter phantom using 16-channel anterior body coils. All imaging data were divided into three groups according to the parallel imaging technique and oversampling distances: groups A (SENSE with phase oversampling distance of 150 mm), B (CS-SENSE with phase oversampling distance of 100 mm), and C (CS-SENSE with phase oversampling distance of 75 mm). No statistically significant differences were observed among groups A, B, and C regarding both T2 and T1 turbo spin-echo (TSE) sequences using an acceleration factor (AF) of 2 (p = 0.301 and 0.289, respectively). In comparison with AF 2 of group A, the scan time of AF 2 of groups B and C was reduced by 11.2% and 23.5% (T2 TSE) and 15.8% and 22.7% (T1 TSE), respectively, while providing comparable image quality. Significant image noise and aliasing artifact were more evident at AF ≥ 2 in group A compared with groups B and C. CS-SENSE with a less phase oversampling distance can reduce image acquisition time without image quality degradation compared with that of SENSE, despite the increase in aliasing artifact as the AF increased in both CS-SENSE and SENSE.
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Affiliation(s)
- Ji Sung Jang
- Departments of Radiology and Research Institute of Radiology, Asan Medical Center, College of Medicine, University of Ulsan, South Korea
| | - Ho Beom Lee
- Departments of Radiology and Research Institute of Radiology, Asan Medical Center, College of Medicine, University of Ulsan, South Korea
| | - Chong Hyun Suh
- Departments of Radiology and Research Institute of Radiology, Asan Medical Center, College of Medicine, University of Ulsan, South Korea
| | - Min Hee Lee
- Departments of Radiology and Research Institute of Radiology, Asan Medical Center, College of Medicine, University of Ulsan, South Korea
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Ogawa M, Urano M, Takaishi T, Kan H, Arai N, Takahashi H, Hara M, Saito M, Shibamoto Y. T-staging of rectal cancer: Utility of single-shot turbo spin-echo diffusion-weighted imaging with T2-weighted images and fusion images. PLoS One 2021; 16:e0249433. [PMID: 33882087 PMCID: PMC8059798 DOI: 10.1371/journal.pone.0249433] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 03/17/2021] [Indexed: 01/06/2023] Open
Abstract
PURPOSE The purpose of this study was to evaluate the usefulness of turbo spin-echo (TSE) DWI with fusion images in the T-staging compared with T2-weighted imaging (T2WI) alone and conventional echo-planner imaging (EPI) DWI. METHODS In this prospective study, 4-mm-thick axial EPI-DWI, TSE-DWI, and T2WI were performed with the same slice locations for 20 patients with rectal cancer. Fusion images of DWI and T2WI were created for both EPI-DWI and TSE-DWI. Ten readers independently diagnosed the T-stages and scored the degree of confidence referring to T2WI alone and then to DWI, T2WI, and fusion images (DWI+T2WI) for each EPI-DWI and TSE-DWI. Visual score assessments of image quality were performed for each DWI. RESULTS Inter-observer agreement of T-staging for 10 readers was slight on T2WI alone but fair on EPI-DWI+T2WI and excellent on TSE-DWI+T2WI images. No readers gave higher confidence scores for T2WI compared to EPI/TSE-DWI+T2WI and for EPI-DWI+T2WI compared to TSE-DWI+T2WI. In seven pathologically-proven cases, poor, poor to slight, and fair to perfect agreements with the pathological T-stage were observed with T2WI alone, EPI-DWI+T2WI, and TSE-DWI+T2WI, respectively. All readers gave higher scores regarding image distortion and lower scores regarding image noise for TSE-DWI compared to EPI-DWI. For DWI utility, higher scores were assigned for TSE-DWI compared to EPI-DWI in 7 readers and there were no significant differences in the other 3 readers. CONCLUSION TSE-DWI images might be more appropriate for image fusion with T2WI and rectal cancer T-staging compared with EPI-DWI and T2WI alone.
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Affiliation(s)
- Masaki Ogawa
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Misugi Urano
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Taku Takaishi
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Hirohito Kan
- Department of Integrated Health Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Nobuyuki Arai
- Department of Radiological Technology, Suzuka University of Medical Science, Suzuka, Japan
| | - Hiroki Takahashi
- Department of Gastroenterological Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Masayasu Hara
- Department of Gastroenterological Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Miki Saito
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Yuta Shibamoto
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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Yoshida T, Urikura A, Hosokawa Y, Shirata K, Nakaya Y, Endo M. Apparent diffusion coefficient measurement using thin-slice diffusion-weighted magnetic resonance imaging: assessment of measurement errors and repeatability. Radiol Phys Technol 2021; 14:203-209. [PMID: 33725272 DOI: 10.1007/s12194-021-00616-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 03/04/2021] [Accepted: 03/12/2021] [Indexed: 12/24/2022]
Abstract
We investigated the measurement error and repeatability of the apparent diffusion coefficient (ADC) obtained using thin-slice imaging. Diffusion-weighted images of an ice-water phantom were acquired using 1.5-T and 3.0-T scanners with 1-, 3-, and 5-mm thickness. ADC maps were generated at b = 0 and 1000 mm2/s using five consecutive scans. Measurement errors were assessed with accuracy and precision. Repeatability was assessed using the within-subject coefficient of variation. The ADC accuracy of both scanners agreed with the ADC of water at 0 °C. At 1-mm, precisions were 2.9% and 8.4% for the 3.0-T and 1.5-T scanners, respectively. The repeatabilities of 1-mm thickness were 1.3% and 3.4% in the 3.0-T and 1.5-T scanners, respectively. The 3.0-T scanner showed acceptable measurement errors and moderate repeatability compared with Quantitative Imaging Biomarkers Alliance recommendation. A 3.0-T scanner can be used for reliable ADC measurement, even with a 1-mm thickness at a reasonable scan time.
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Affiliation(s)
- Tsukasa Yoshida
- Department of Diagnostic Radiology, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi, Sunto, Shizuoka, 411-8777, Japan.
- Department of Radiation Science, Hirosaki University Graduate School of Health Sciences, 66-1 Hon-cho, Hirosaki, 036-8564, Japan.
| | - Atsushi Urikura
- Department of Diagnostic Radiology, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi, Sunto, Shizuoka, 411-8777, Japan
| | - Yoichiro Hosokawa
- Department of Radiological Life Sciences, Division of Medical Life Sciences, Hirosaki University, 66-1 Hon-cho, Hirosaki, 036-8564, Japan
| | - Kensei Shirata
- Department of Diagnostic Radiology, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi, Sunto, Shizuoka, 411-8777, Japan
| | - Yoshihiro Nakaya
- Department of Diagnostic Radiology, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi, Sunto, Shizuoka, 411-8777, Japan
| | - Masahiro Endo
- Department of Diagnostic Radiology, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi, Sunto, Shizuoka, 411-8777, Japan
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Mori N, Mugikura S, Miyashita M, Mori Y, Maekawa Y, Nagasaka T, Takase K. Turbo Spin-echo Diffusion-weighted Imaging Compared with Single-shot Echo-planar Diffusion-weighted Imaging: Image Quality and Diagnostic Performance When Differentiating between Ductal Carcinoma in situ and Invasive Ductal Carcinoma. Magn Reson Med Sci 2020; 20:60-68. [PMID: 32147641 PMCID: PMC7952202 DOI: 10.2463/mrms.mp.2019-0195] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Purpose: To compare the image quality between turbo spin-echo (TSE)-diffusion weighted imaging (DWI) and single-shot echo-planar imaging (EPI)-DWI, and to verify the diagnostic performance of the apparent diffusion coefficient (ADC) parameters of the two techniques by using histogram analysis in terms of differentiation between ductal carcinoma in situ (DCIS) and invasive ductal carcinoma (IDC) lesions. Methods: Ninety-four women with 94 lesions diagnosed as breast cancer by surgery underwent IRB-approved preoperative magnetic resonance imaging, including TSE and EPI-DWI with b-values of 50 and 850 s/mm2. Twenty lesions were identified as DCIS and 74 as IDC. Image quality [signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR), and geometric distortion] was evaluated quantitatively and compared between the TSE and EPI-DWI. A histogram analysis of the entire tumor voxel-based ADC data was performed, and the 10th, 25th, 50th, 75th, and 90th percentile values of each technique were compared between DCIS and IDC lesions. Results: The SNR and CNR of TSE-DWI were significantly higher than those of EPI-DWI (P < 0.0001 and < 0.0001). The geometric distortion of TSE-DWI was significantly lower than that of EPI-DWI (P < 0.0001). In TSE-DWI, the 10th, 25th, 50th, and 75th percentile values were significantly different between the DCIS and IDC lesions (P = 0.0010, 0.0004, 0.0008, and 0.0044, respectively). In EPI-DWI, the 50th and 75th percentile values were significantly different between the two groups (P = 0.0009 and 0.0093). There was no significant difference in the area under the curve of the receiver operating characteristic analysis of the 10th, 25th, 50th, and 75th percentile values of TSE-DWI, and the 50th and 75th percentile values of EPI-DWI (P = 0.29). Conclusion: The image quality of TSE-DWI was better than that of EPI-DWI. DCIS lesions were distinguished from IDC lesions with a wider range of percentile values in TSE-DWI than in EPI-DWI, although diagnostic performance was not significantly different between the techniques.
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Affiliation(s)
- Naoko Mori
- Department of Diagnostic Radiology, Tohoku University Graduate School of Medicine
| | - Shunji Mugikura
- Department of Diagnostic Radiology, Tohoku University Graduate School of Medicine
| | - Minoru Miyashita
- Department of Surgical Oncology, Tohoku University Graduate School of Medicine
| | - Yu Mori
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine
| | - Yui Maekawa
- Department of Diagnostic Radiology, Tohoku University Graduate School of Medicine
| | - Tatsuo Nagasaka
- Department of Radiological Technology, Tohoku University Graduate School of Medicine
| | - Kei Takase
- Department of Diagnostic Radiology, Tohoku University Graduate School of Medicine
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Noguerol TM, Barousse R, Amrhein TJ, Royuela-del-Val J, Montesinos P, Luna A. Optimizing Diffusion-Tensor Imaging Acquisition for Spinal Cord Assessment: Physical Basis and Technical Adjustments. Radiographics 2020; 40:403-427. [DOI: 10.1148/rg.2020190058] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Teodoro Martín Noguerol
- From the MRI Section, Department of Radiology, SERCOSA, Health Time, Carmelo Torres 2, 23007, Jaén, Spain (T.M.N., A.L.); Peripheral Nerve and Plexus Department, Centro Rossi, Buenos Aires, Argentina (R.B.); Department of Radiology, Duke University Medical Center, Durham, N.C. (T.J.A.); RESSALTA, Health Time, Córdoba, Spain (J.R.d.V.); and Philips Iberia, Madrid, Spain (P.M.)
| | - Rafael Barousse
- From the MRI Section, Department of Radiology, SERCOSA, Health Time, Carmelo Torres 2, 23007, Jaén, Spain (T.M.N., A.L.); Peripheral Nerve and Plexus Department, Centro Rossi, Buenos Aires, Argentina (R.B.); Department of Radiology, Duke University Medical Center, Durham, N.C. (T.J.A.); RESSALTA, Health Time, Córdoba, Spain (J.R.d.V.); and Philips Iberia, Madrid, Spain (P.M.)
| | - Timothy J. Amrhein
- From the MRI Section, Department of Radiology, SERCOSA, Health Time, Carmelo Torres 2, 23007, Jaén, Spain (T.M.N., A.L.); Peripheral Nerve and Plexus Department, Centro Rossi, Buenos Aires, Argentina (R.B.); Department of Radiology, Duke University Medical Center, Durham, N.C. (T.J.A.); RESSALTA, Health Time, Córdoba, Spain (J.R.d.V.); and Philips Iberia, Madrid, Spain (P.M.)
| | - Javier Royuela-del-Val
- From the MRI Section, Department of Radiology, SERCOSA, Health Time, Carmelo Torres 2, 23007, Jaén, Spain (T.M.N., A.L.); Peripheral Nerve and Plexus Department, Centro Rossi, Buenos Aires, Argentina (R.B.); Department of Radiology, Duke University Medical Center, Durham, N.C. (T.J.A.); RESSALTA, Health Time, Córdoba, Spain (J.R.d.V.); and Philips Iberia, Madrid, Spain (P.M.)
| | - Paula Montesinos
- From the MRI Section, Department of Radiology, SERCOSA, Health Time, Carmelo Torres 2, 23007, Jaén, Spain (T.M.N., A.L.); Peripheral Nerve and Plexus Department, Centro Rossi, Buenos Aires, Argentina (R.B.); Department of Radiology, Duke University Medical Center, Durham, N.C. (T.J.A.); RESSALTA, Health Time, Córdoba, Spain (J.R.d.V.); and Philips Iberia, Madrid, Spain (P.M.)
| | - Antonio Luna
- From the MRI Section, Department of Radiology, SERCOSA, Health Time, Carmelo Torres 2, 23007, Jaén, Spain (T.M.N., A.L.); Peripheral Nerve and Plexus Department, Centro Rossi, Buenos Aires, Argentina (R.B.); Department of Radiology, Duke University Medical Center, Durham, N.C. (T.J.A.); RESSALTA, Health Time, Córdoba, Spain (J.R.d.V.); and Philips Iberia, Madrid, Spain (P.M.)
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Ogawa M, Nakagawa M, Arai N, Kan H, Ohba S, Shibata S, Maki H, Shibamoto Y. Evaluation of Thin-slice Coronal Single-shot Turbo Spin-echo Diffusion-weighted Imaging of the Hand: A Comparison with Conventional Echo-planar Diffusion-weighted Imaging. Magn Reson Med Sci 2019; 19:382-388. [PMID: 31645537 PMCID: PMC7809136 DOI: 10.2463/mrms.tn-2019-0115] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
We prospectively evaluated thin-slice coronal turbo spin-echo (TSE) diffusion-weighted imaging (DWI) covering a larger area with the recently-developed techniques on a 3T MRI scanner, compared with echo-planar imaging (EPI)-DWI in patients undergoing routine hand MRI. Visual score assessment and apparent diffusion coefficient (ADC) measurement were performed for patients with suspected hand tumors. TSE-DWI was superior to EPI-DWI, with less image distortion. The visual score and ADC comparison assessments proved that the image noise of TSE-DWI was acceptable.
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Affiliation(s)
- Masaki Ogawa
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences
| | - Motoo Nakagawa
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences
| | - Nobuyuki Arai
- Department of Radiology, Nagoya City University Hospital
| | - Hirohito Kan
- Department of Radiology, Nagoya City University Hospital
| | - Shota Ohba
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences
| | - Shunsuke Shibata
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences
| | - Hiroyuki Maki
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences
| | - Yuta Shibamoto
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences
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Huang W, Liu J, Zhang B, Liang L, Luo X, Mei Y, Zhang S. Potential value of non-echo-planar diffusion-weighted imaging of the nasopharynx: a primary study for differential diagnosis between recurrent nasopharyngeal carcinoma and post-chemoradiation fibrosis. Acta Radiol 2019; 60:1265-1272. [PMID: 30661363 DOI: 10.1177/0284185118822635] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Wenhui Huang
- Department of Radiology, Guangdong General Hospital affiliated to South China University of Technology, Guangzhou, Guangdong, PR China
| | - Jing Liu
- Department of Radiology, Guangdong General Hospital affiliated to South China University of Technology, Guangzhou, Guangdong, PR China
- Department of Radiology, Guizhou Medical University Affiliated Hospital, Guizhou, PR China
| | - Bin Zhang
- Medical Imaging Center, the First Affiliated Hospital, Jinan University, Guangzhou, Guangdong, PR China
| | - Long Liang
- Department of Radiology, Guangdong General Hospital affiliated to South China University of Technology, Guangzhou, Guangdong, PR China
| | - Xiaoning Luo
- Department of Radiology, Guangdong General Hospital affiliated to South China University of Technology, Guangzhou, Guangdong, PR China
| | | | - Shuixing Zhang
- Department of Radiology, Guangdong General Hospital affiliated to South China University of Technology, Guangzhou, Guangdong, PR China
- Medical Imaging Center, the First Affiliated Hospital, Jinan University, Guangzhou, Guangdong, PR China
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Panyarak W, Chikui T, Yamashita Y, Kamitani T, Yoshiura K. Image Quality and ADC Assessment in Turbo Spin-Echo and Echo-Planar Diffusion-Weighted MR Imaging of Tumors of the Head and Neck. Acad Radiol 2019; 26:e305-e316. [PMID: 30528753 DOI: 10.1016/j.acra.2018.11.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 11/03/2018] [Accepted: 11/20/2018] [Indexed: 02/07/2023]
Abstract
RATIONALE AND OBJECTIVES We aimed to compare the distortion ratio (DR), signal-to-noise ratio (SNR), and contrast-to-noise ratio (CNR) between turbo spin-echo (TSE)-diffusion-weighted imaging (DWI) and echo-planar imaging (EPI)-DWI of the orofacial region and prove the usefulness of TSE-DWI for the differential diagnosis of orofacial lesions. MATERIALS AND METHODS The DR, SNR, and CNR of both sequences were compared in 42 cases. Then, the apparent diffusion coefficient (ADC) of various orofacial lesions obtained by TSE-DWI was investigated in 143 lesions. RESULTS In the first study, 38 of 42 cases were analyzed. TSE-DWI showed a significantly lower DR (p < 0.05) and higher SNR and CNR than EPI-DWI (p < 0.05), indicating the superiority of TSE-DWI. In the second study, 114 cases (79.3%) were successfully analyzed. When lesions were divided into cysts, benign tumors, squamous cell carcinoma, malignant lymphoma, and other malignant tumors (OT), significant differences were observed in all pairs of lesions (p < 0.05) except squamous cell carcinoma and OT (p = 0.877). The area under the curve for distinguishing benign from malignant tumors was 0.80 with a cutoff ADC of 1.29 × 10-3 mm²/s. CONCLUSION TSE-DWI produced better quality images than EPI-DWI. TSE-DWI yields the high possibility of obtaining ADC in the orofacial region, and this value was considered useful for the differential diagnosis of orofacial lesions.
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Affiliation(s)
- Wannakamon Panyarak
- Graduate School of Dental Science, Kyushu University, Fukuoka, Japan; Division of Oral and Maxillofacial Radiology, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.
| | - Toru Chikui
- Department of Oral and Maxillofacial Radiology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
| | - Yasuo Yamashita
- Department of Medical Technology, Kyushu University Hospital, Fukuoka, Japan
| | - Takeshi Kamitani
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kazunori Yoshiura
- Department of Oral and Maxillofacial Radiology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan
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Yamashita K, Hiwatashi A, Togao O, Kikuchi K, Shimomiya Y, Kamei R, Momosaka D, Matsumoto N, Kobayashi K, Takemura A, Kwee TC, Takahara T, Honda H. Improved Visualization of Middle Ear Cholesteatoma with Computed Diffusion-weighted Imaging. Magn Reson Med Sci 2019; 18:233-237. [PMID: 30518733 PMCID: PMC6630047 DOI: 10.2463/mrms.tn.2018-0068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Computed DWI (cDWI) is a mathematical technique that calculates arbitrary higher b value images from at least two different lower b values. In addition, the removal of high intensity noise with image processing on cDWI could improve cholesteatoma-background contrast-to-noise ratio (CNR). In the present study, noise reduction was performed by the cut-off values of apparent diffusion coefficient (ADC) less than 0 and 0.4 × 10−3 s/mm2. The cholesteatoma to non-cholesteatoma CNR was increased using a noise reduction algorithm for clinical setting.
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Affiliation(s)
- Koji Yamashita
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
| | - Akio Hiwatashi
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
| | - Osamu Togao
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
| | - Kazufumi Kikuchi
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
| | - Yamato Shimomiya
- Division of Marketing, Department of Clinical Application Development, Ziosoft, Inc
| | - Ryotaro Kamei
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
| | - Daichi Momosaka
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
| | - Nozomu Matsumoto
- Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University
| | - Kouji Kobayashi
- Department of Medical Technology, Kyushu University Hospital
| | | | - Thomas Christian Kwee
- Department of Radiology, Nuclear Medicine and Molecular Imaging, University Medical Center Groningen
| | - Taro Takahara
- Department of Biomedical Engineering, Tokai University, School of Engineering
| | - Hiroshi Honda
- Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
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Ai QY, King AD, Chan JSM, Chen W, Chan KCA, Woo JKS, Zee BCY, Chan ATC, Poon DMC, Ma BBY, Hui EP, Ahuja AT, Vlantis AC, Yuan J. Distinguishing early-stage nasopharyngeal carcinoma from benign hyperplasia using intravoxel incoherent motion diffusion-weighted MRI. Eur Radiol 2019; 29:5627-5634. [DOI: 10.1007/s00330-019-06133-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 02/14/2019] [Accepted: 03/06/2019] [Indexed: 11/29/2022]
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Suzuki M, Morita S, Goto Y, Tadenuma H, Nishina Y, Yoneyama M, Tanaka I, Sakai S. Artifact-robust diffusion-weighted whole-body imaging with background suppression at 3 T using improved turbo spin-echo diffusion-weighted imaging. Br J Radiol 2018; 92:20180489. [PMID: 30407840 DOI: 10.1259/bjr.20180489] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE: To compare single-shot turbo spin-echo (TSE) diffusion-weighted whole-body imaging with background suppression (DWIBS) and echo-planar imaging (EPI) DWIBS to determine the feasibility of direct-coronal TSE-DWIBS. METHODS: All measurements were performed using a 3.0 T MRI scanner. In the phantom study, we compared the contrast ratios (CRs) of tumor-mimicking phantom (tumor) to muscle-mimicking phantom (muscle) and water to muscle and the signal-to-noise ratio (SNR) between TSE-DWIBS and EPI-DWIBS. In the volunteer study, 10 healthy volunteers were whole-body scanned with direct-coronal TSE-DWIBS, direct-coronal EPI-DWIBS (corEPI-DWIBS), and transverse EPI-DWIBS (traEPI-DWIBS). Two radiologists assessed the image distortion, uniformity of fat suppression, overall artifacts, and overall image quality in maximum intensity projection (MIP) images from each DWIBS image using a 5-point scale. RESULTS: In the phantom study, the CR of tumor to muscle was found to be lower for TSE-DWIBS (10.57 ± 0.45) than for EPI-DWIBS (15.38 ± 0.27), and the CR of water to muscle was higher for TSE-DWIBS (9.61 ± 0.66) than for EPI-DWIBS (2.52 ± 0.60). The volunteer study revealed good inter observer agreement between TSE-DWIBS and EPI-DWIBS with respect to image distortion, uniformity of fat suppression, overall artifacts, and overall image quality, with weighted Cohen's κ coefficients of 0.91, 0.74, 0.87, and 0.72, respectively. Qualitative analysis scores for image distortion, uniformity of fat suppression, overall artifacts, and overall image quality were significantly higher for TSE-DWIBS than for corEPI-DWIBS or traEPI-DWIBS (p < 0.05). CONCLUSION: Direct-coronal TSE-DWIBS is robust against magnetic field inhomogeneity. High-quality images without distortion or fat suppression inhomogeneity were obtained. ADVANCES IN KNOWLEDGE: Many studies on DWIBS have been previously reported; however, these studies used EPI read-out. To the best of our knowledge, no studies using TSE read-out have been reported. In this study, we examined the feasibility of TSE-DWIBS with lesser artifacts than EPI-DWIBS.
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Affiliation(s)
- Makoto Suzuki
- 1 Department of Radiological Service, Tokyo Women's Medical University Hospital , Shinjuku , Japan.,2 Diagnostic Imaging Center, Kurume University Hospital , Kurume , Japan
| | - Satoru Morita
- 3 Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University Hospital , Shinjuku , Japan
| | - Yasuhiro Goto
- 1 Department of Radiological Service, Tokyo Women's Medical University Hospital , Shinjuku , Japan
| | - Hitoshi Tadenuma
- 1 Department of Radiological Service, Tokyo Women's Medical University Hospital , Shinjuku , Japan
| | - Yu Nishina
- 3 Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University Hospital , Shinjuku , Japan
| | | | - Isao Tanaka
- 1 Department of Radiological Service, Tokyo Women's Medical University Hospital , Shinjuku , Japan
| | - Shuji Sakai
- 3 Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University Hospital , Shinjuku , Japan
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Short tau inversion recovery in breast diffusion-weighted imaging: signal-to-noise ratio and apparent diffusion coefficients using a breast phantom in comparison with spectral attenuated inversion recovery. Radiol Med 2017; 123:296-304. [PMID: 29230679 DOI: 10.1007/s11547-017-0840-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 11/30/2017] [Indexed: 12/25/2022]
Abstract
OBJECTIVE This study aimed to compare the signal-to-noise ratios (SNRs) and apparent diffusion coefficients (ADCs) obtained using two fat suppression techniques in breast diffusion-weighted imaging (DWI) of a phantom. MATERIALS AND METHODS The breast phantom comprised agar gels with four different concentrations of granulated sugar (samples 1, 2, 3, and 4). DWI with short tau inversion recovery (STIR-DWI) and that with spectral attenuated inversion recovery (SPAIR-DWI) were performed using 3.0-T magnetic resonance imaging, and the obtained SNRs and ADCs were compared. ADCs were also compared between the right and left breast phantoms. RESULTS For samples 3 and 4, SNRs obtained using STIR-DWI were lower than those obtained using SPAIR-DWI. For samples 2, 3, and 4, overall ADCs obtained using STIR-DWI were significantly higher than those obtained using SPAIR-DWI (p < 0.001 for all), although no significant difference was observed for sample 1 (p = 0.62). STIR-DWI shows a positive bias and wide limits of agreement in Bland-Altman plot. The coefficients of variance of overall ADCs were good in STIR-DWI and SPAIR-DWI. For all samples, STIR-DWI demonstrated slightly larger percentage differences in ADCs between the right and left phantoms than SPAIR-DWI. CONCLUSION SNRs and ADCs obtained using STIR-DWI are influenced by the T 1 value; a shorter T 1 value decreases SNRs, overestimates ADCs, and induces the measurement error in ADCs. STIR-DWI showed a larger difference in ADCs between the right and left phantoms than SPAIR-DWI.
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Comparison of intravoxel incoherent motion diffusion-weighted imaging between turbo spin-echo and echo-planar imaging of the head and neck. Eur Radiol 2017; 28:316-324. [DOI: 10.1007/s00330-017-4990-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 04/25/2017] [Accepted: 07/12/2017] [Indexed: 10/19/2022]
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18
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Rutman AM, Peterson DJ, Cohen WA, Mossa-Basha M. Diffusion Tensor Imaging of the Spinal Cord: Clinical Value, Investigational Applications, and Technical Limitations. Curr Probl Diagn Radiol 2017; 47:257-269. [PMID: 28869104 DOI: 10.1067/j.cpradiol.2017.07.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 07/18/2017] [Accepted: 07/26/2017] [Indexed: 11/22/2022]
Abstract
Although diffusion-weighted imaging (DWI) has become a mainstay in modern brain imaging, it remains less utilized in the evaluation of the spinal cord. Many studies have shown promise in using DWI and diffusion-tensor imaging (DTI) for evaluation of the spinal cord; however, application has been stalled by technical obstacles and artifacts, and questions remain regarding its clinical utility on an individual examination level. This review discusses the background, concepts, and technical aspects of DWI and DTI, specifically for imaging of the spinal cord. The clinical and investigational applications of spinal cord DTI, as well as the practical difficulties and limitations of DWI and DTI for the evaluation of the spinal cord are examined.
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Affiliation(s)
- Aaron M Rutman
- Department of Radiology, University of Washington, Seattle, WA.
| | | | - Wendy A Cohen
- Department of Radiology, University of Washington, Seattle, WA
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