Computed diffusion-weighted imaging using 3-T magnetic resonance imaging for prostate cancer diagnosis

Ueno, Yoshiko; Takahashi, Satoru; Kitajima, Kazuhiro; Kimura, Toshikazu; Aoki, Ikuo; Kawakami, Fumi; Miyake, Hideaki; Ohno, Yoshiharu; Sugimura, Kazuro

doi:10.1007/s00330-013-2958-z

Cited by 57 publications

(70 citation statements)

References 19 publications

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“…For instance, one study showed the superiority of acquired b=2000s/mm 2 DWI compared to b=1000s/mm 2 DWI [31]. We also found better lesion visibility at b=2000s/mm 2 (72%) compared to b=1000s/mm 2 DWI (55%).…”

Section: Discussionsupporting

confidence: 54%

Comparison of calculated and acquired high b value diffusion-weighted imaging in prostate cancer

et al. 2014

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Purpose To determine whether the performance of calculated high b-value diffusion weighted images (DWI) derived from regular lower b-value DWI using exponential diffusion decay models (intravoxel incoherent motion=IVIM and diffusional kurtosis=DK) is comparable to acquired high b-value DWI in prostate cancer detection. Materials and Methods One hundred six patients underwent diagnostic multiparametric prostate MRI at 3T using an endorectal coil. 5 b-value (b= 0, 188, 375, 563, 750 s/mm2) DWI and high b-value (b=0, 1000 and 2000 s/mm2) DWI were acquired. Calculated high b-value (b=1000 s/mm2 and b=2000 s/mm2) DWI were derived from the DWI dataset using DK and IVIM models. Calculated and acquired high b-value DWI images were compared for lesion visibility and image quality by two experienced radiologists (1 and 6 years of experience). GEE with Wald test was used to compare the image quality among the four calculated high b-value DWI by comparing the proportion of lesions in each model which were comparable to the acquired images. This comparison was done for all lesions and by lesion location (PZ or CG; low apical/anterior or apical/mid/base). Results More lesions were visible on acquired b=2000s/mm2 compared to b=1000s/mm2 DWI. Calculated high b value DWI using the IVIM model had approximately the same number of lesions as acquired high b value DWI whereas the DK model had fewer lesions than acquired images. The image quality of calculated high b value DWI was comparable to that of acquired images and the highest quality images were obtained with b1000IVIM. The image quality of calculated b1000IVIM was the same as that of acquired DWI in apical/mid/base (98%) locations and comparable in low apical & anterior (95.4%) locations. The image quality of calculated b2000IVIM was inferior in both apical/mid/base (86.2%) locations and comparable in low apical & anterior (83.9%) locations. Conclusion Calculated high b-value DWI obtained using IVIM model has same lesion visibility as that of acquired DWI. The image quality of calculated high b value DWI relative to corresponding acquired DWI decreases with increase in b-value.

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Section: Discussionsupporting

confidence: 54%

Comparison of calculated and acquired high b value diffusion-weighted imaging in prostate cancer

et al. 2014

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“…Another study reported the best diagnostic performance for prostate tumor detection when T2 weighted images were evaluated in conjunction with b2000 DWI, regardless of whether a set of “measured” or “calculated” b2000 images were used. 87 …”

Section: Advances In Prostate Diffusion-weighted Imagingmentioning

confidence: 99%

Advances in Diffusion-Weighted Imaging

Mannelli¹,

Nougaret²,

Vargas³

et al. 2015

Radiologic Clinics of North America

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“…. 13 However, it remains unclear which combination of b-values is optimal for generating cDWI with a high b-value such as 2000 s mm 22 for detection of PCa in routine clinical practice. The aim of our study was therefore to evaluate the influence of the combinations of b-values on cDWI at b 5 2000 s mm 22 for PCa detection and to determine the optimal combination on a 3-T MR system.…”

Section: -12mentioning

confidence: 99%

“…This finding agrees with the results of previously reported studies. [10][11][12][13] Blackledge et al 10 performed a copper sulfate phantom study and found that the noise remains constant across b-values for acquired images, whereas for computed images, it decreases when the b-value increases to .840 s mm 22 . Computed DWI images are thus more likely than acquired images to highlight differences in SI between cancerous and non-cancerous tissue on images with high b-values.…”

Section: Full Paper: Computed Diffusion-weighted Mri For Prostate Canmentioning

confidence: 99%

Computed diffusion-weighted MRI for prostate cancer detection: the influence of the combinations ofb-values

Ueno

Takahashi

Ohno

et al. 2015

BJR

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Computed diffusion-weighted imaging using 3-T magnetic resonance imaging for prostate cancer diagnosis

Abstract: cDWI2000 appears to be more effective than mDWI1000, and at least as effective as mDWI2000 for PCa diagnosis.

Cited by 57 publications

References 19 publications

Comparison of calculated and acquired high b value diffusion-weighted imaging in prostate cancer

Comparison of calculated and acquired high b value diffusion-weighted imaging in prostate cancer

Advances in Diffusion-Weighted Imaging

Computed diffusion-weighted MRI for prostate cancer detection: the influence of the combinations ofb-values

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