scholarly journals Comparison between turbo spin-echo and echo planar diffusion-weighted imaging of the female pelvis with 3T MRI

2021 ◽  
Vol 10 (2) ◽  
pp. 205846012199473
Author(s):  
Takeshi Yoshizako ◽  
Rika Yoshida ◽  
Hiroya Asou ◽  
Megumi Nakamura ◽  
Hajime Kitagaki
Keyword(s):  
Image Quality ◽  
Diffusion Weighted Imaging ◽  
Spin Echo ◽  
Turbo Spin Echo ◽  
Female Pelvis ◽  
3T Mri ◽  
Turbo Spin ◽  
Diffusion Weighted ◽  
Adc Values ◽  
Echo Planar

Background Echo-planar imaging (EPI)-diffusion-weighted imaging (DWI) may take unclear image affected by susceptibility, geometric distortions and chemical shift artifacts. Purpose To compare the image quality and usefulness of EPI-DWI and turbo spin echo (TSE)-DWI in female patients who required imaging of the pelvis. Material and Methods All 57 patients were examined with a 3.0-T MR scanner. Both TSE- and EPI-DWI were performed with b values of 0 and 1000 s/mm2. We compared geometric distortion, the contrast ratio (CR) of the myometrium to the muscle and the apparent diffusion coefficient (ADC) values for the myometrium and lesion. Two radiologists scored the TSE- and EPI-DWI of each patient for qualitative evaluation. Results The mean percent distortion was significantly smaller with TSE- than EPI-DWI ( p = 0.00). The CR was significantly higher with TSE- than EPI-DWI ( p = 0.003). There was a significant difference in the ADC value for the uterus and lesions between the EPI- and TSE-DWI ( p < 0.05). Finally, the ADC values of cancer were significantly different from those for the uterus and benign with both the two sequences ( p < 0.05). The scores for ghosting artifacts were higher with TSE- than EPI-DWI ( p = 0.019). But there were no significant differences between TSE- and EPI-DWI with regard to image contrast and overall image quality. Conclusion TSE-DWI on the female pelvis by 3T MRI produces less distortion and higher CR than EPI-DWI, but there is no difference in contrast and image quality.

scholarly journals Values of Apparent Diffusion Coefficient and Lesion-to-Spinal Cord Signal Intensity in Diagnosing Solitary Pulmonary Lesions: Turbo Spin-Echo versus Echo-Planar Imaging Diffusion-Weighted Imaging

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Qiang Lei ◽  
Qi Wan ◽  
Lishan Liu ◽  
Jianfeng Hu ◽  
Wei Zuo ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Diffusion Coefficient ◽  
Image Quality ◽  
Diffusion Weighted Imaging ◽  
Spin Echo ◽  
Turbo Spin Echo ◽  
Planar Imaging ◽  
Turbo Spin ◽  
Apparent Diffusion ◽  
Echo Planar

Objective. This study is aimed at comparing the image quality and diagnostic performance of mean apparent diffusion coefficient (ADC) and lesion-to-spinal cord signal intensity ratio (LSR) derived from turbo spin-echo diffusion-weighted imaging (TSE-DWI) and echo-planar imaging- (EPI-) DWI in patients with a solitary pulmonary lesion (SPL). Methods. 33 patients with SPL underwent chest imaging using EPI-DWI and TSE-DWI with b = 600  s/mm2 in free breathing. A comparison of the distortion ratio (DR), signal-to-noise ratio (SNR), and contrast-to-noise ratio (CNR) was drawn between the two techniques using a Wilcoxon signed-rank test. The interprotocol reproducibility between quantitative parameters of EPI-DWI and TSE-DWI was evaluated using a Bland-Altman plot. ADCs and LSRs derived from EPI-DWI and TSE-DWI were calculated and compared between malignant and benign groups using the Mann–Whitney test. Results. TSE-DWI had similar SNR and CNR compared with EPI-DWI. DR was significantly lower on TSE-DWI than EPI-DWI. ADC and LSR showed slightly higher values with TSE-DWI, while the Bland-Altman analysis showed unacceptable limits of agreement between the two sequences. ADC and LSR of both DWI techniques differed significantly between lung cancer and benign lesions ( P < 0.05 ). The LSR(EPI-DWI) showed the highest area under the curve ( AUC = 0.818 ), followed by ADC(EPI-DWI) ( AUC = 0.789 ), ADC(TSE-DWI) ( AUC = 0.781 ), and LSR(TSE-DWI) ( AUC = 0.748 ), respectively. Among these parameters, the difference in diagnostic accuracy was not statistically significant. Conclusions. TSE-DWI provides significantly improved image quality in patients with SPL as compared with EPI-DWI. However, there was no difference in diagnostic efficacy between these two techniques, according to ADC and LSR.

scholarly journals Comparison of the image quality of turbo spin echo- and echo-planar diffusion-weighted images of the oral cavity

Medicine ◽  
2018 ◽  
Vol 97 (19) ◽  
pp. e0447 ◽  
Author(s):  
Kenichiro Hirata ◽  
Takeshi Nakaura ◽  
Tomoyuki Okuaki ◽  
Masafumi Kidoh ◽  
Seitaro Oda ◽  
...  
Keyword(s):  
Image Quality ◽  
Oral Cavity ◽  
Spin Echo ◽  
Turbo Spin Echo ◽  
Turbo Spin ◽  
Diffusion Weighted Images ◽  
Diffusion Weighted ◽  
Echo Planar

Comparison of intravoxel incoherent motion diffusion-weighted imaging between turbo spin-echo and echo-planar imaging of the head and neck

2017 ◽  
Vol 28 (1) ◽  
pp. 316-324 ◽  
Author(s):  
Ryoji Mikayama ◽  
Hidetake Yabuuchi ◽  
Shinjiro Sonoda ◽  
Koji Kobayashi ◽  
Kazuya Nagatomo ◽  
...  
Keyword(s):  
Head And Neck ◽  
Diffusion Weighted Imaging ◽  
Spin Echo ◽  
Echo Planar Imaging ◽  
Intravoxel Incoherent Motion ◽  
Turbo Spin Echo ◽  
Planar Imaging ◽  
Turbo Spin ◽  
Diffusion Weighted ◽  
Echo Planar

Image Quality and ADC Assessment in Turbo Spin-Echo and Echo-Planar Diffusion-Weighted MR Imaging of Tumors of the Head and Neck

2019 ◽  
Vol 26 (10) ◽  
pp. e305-e316 ◽  
Author(s):  
Wannakamon Panyarak ◽  
Toru Chikui ◽  
Yasuo Yamashita ◽  
Takeshi Kamitani ◽  
Kazunori Yoshiura
Keyword(s):  
Image Quality ◽  
Mr Imaging ◽  
Head And Neck ◽  
Spin Echo ◽  
Turbo Spin Echo ◽  
Turbo Spin ◽  
Diffusion Weighted ◽  
Echo Planar
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