Differentiation between Glioblastoma and Solitary Metastasis: Morphologic Assessment by Conventional Brain MR Imaging and Diffusion-Weighted Imaging

2021 ◽  
Vol 25 (1) ◽  
pp. 23
Author(s):  
Bo Young Jung ◽  
Eun Ja Lee ◽  
Jong Myon Bae ◽  
Young Jae Choi ◽  
Eun Kyoung Lee ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Diffusion Weighted Imaging ◽  
Solitary Metastasis ◽  
Diffusion Weighted ◽  
And Diffusion

Imaging features of small (≤3 cm) pancreatic solid tumors on gadoxetic-acid-enhanced MR imaging and diffusion-weighted imaging: an initial experience

2012 ◽  
Vol 30 (7) ◽  
pp. 916-925 ◽  
Author(s):  
Kyung Mi Jang ◽  
Seong Hyun Kim ◽  
Young Kon Kim ◽  
Min Jung Park ◽  
Mi Hee Lee ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Solid Tumors ◽  
Diffusion Weighted Imaging ◽  
Gadoxetic Acid ◽  
Imaging Features ◽  
Initial Experience ◽  
Diffusion Weighted ◽  
And Diffusion

scholarly journals Evaluation of primary adnexal masses by 3T MRI: categorization with conventional MR imaging and diffusion-weighted imaging

2012 ◽  
Vol 5 (1) ◽  
pp. 33 ◽  
Author(s):  
He Zhang ◽  
Guo-Fu Zhang ◽  
Zhi-Yan He ◽  
Zheng-Yu Li ◽  
Ming Zhu ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Diffusion Weighted Imaging ◽  
Adnexal Masses ◽  
3T Mri ◽  
Diffusion Weighted ◽  
And Diffusion

scholarly journals Tracking accuracy of T2- and diffusion-weighted magnetic resonance imaging for infusate distribution by convection-enhanced delivery

2011 ◽  
Vol 115 (3) ◽  
pp. 474-480 ◽  
Author(s):  
Rajiv R. Iyer ◽  
John A. Butman ◽  
Stuart Walbridge ◽  
Neville D. Gai ◽  
John D. Heiss ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Diffusion Weighted Imaging ◽  
Nonhuman Primates ◽  
Drug Distribution ◽  
Imaging Analysis ◽  
Tracking Accuracy ◽  
Convection Enhanced Delivery ◽  
Diffusion Weighted ◽  
Mean Differences ◽  
And Diffusion

Object Because convection-enhanced delivery relies on bulk flow of fluid in the interstitial spaces, MR imaging techniques that detect extracellular fluid and fluid movement may be useful for tracking convective drug distribution. To determine the tracking accuracy of T2-weighted and diffusion-weighted MR imaging sequences, the authors followed convective distribution of radiolabeled compounds using these imaging sequences in nonhuman primates. Methods Three nonhuman primates underwent thalamic convective infusions (5 infusions) with 14C-sucrose (MW 342 D) or 14C-dextran (MW 70,000 D) during serial MR imaging (T2- and diffusion-weighted imaging). Imaging, histological, and autoradiographic findings were analyzed. Results Real-time T2- and diffusion-weighted imaging clearly demonstrated the region of infusion, and serial images revealed progressive filling of the bilateral thalami during infusion. Imaging analysis for T2- and diffusion-weighted sequences revealed that the tissue volume of distribution (Vd) increased linearly with volume of infusion (Vi; R2 = 0.94, R2 = 0.91). Magnetic resonance imaging analysis demonstrated that the mean ± SD Vd/Vi ratios for T2-weighted (3.6 ± 0.5) and diffusion-weighted (3.3 ± 0.4) imaging were similar (p = 0.5). While 14C-sucrose and 14C-dextran were homogeneously distributed over the infused region, autoradiographic analysis revealed that T2-weighted and diffusion-weighted imaging significantly underestimated the Vd of both 14C-sucrose (mean differences 51.3% and 52.3%, respectively; p = 0.02) and 14C-dextran (mean differences 49.3% and 59.6%; respectively, p = 0.001). Conclusions Real-time T2- and diffusion-weighted MR imaging significantly underestimate tissue Vd during convection-enhanced delivery over a wide range of molecular sizes. Application of these imaging modalities may lead to inaccurate estimation of convective drug distribution.

scholarly journals Use of conventional MR imaging and diffusion-weighted imaging for evaluating the risk grade of gastrointestinal stromal tumors

2012 ◽  
Vol 36 (6) ◽  
pp. 1395-1401 ◽  
Author(s):  
Hai Ying Zhou ◽  
Xiao Ming Zhang ◽  
Nan Lin Zeng ◽  
Shun Hai Jian ◽  
Wei Tang
Keyword(s):  
Mr Imaging ◽  
Gastrointestinal Stromal Tumors ◽  
Diffusion Weighted Imaging ◽  
Stromal Tumors ◽  
Diffusion Weighted ◽  
Risk Grade ◽  
And Diffusion

scholarly journals MR Imaging of Metronidazole-Induced Encephalopathy: Lesion Distribution and Diffusion-Weighted Imaging Findings

2007 ◽  
Vol 28 (9) ◽  
pp. 1652-1658 ◽  
Author(s):  
E. Kim ◽  
D.G. Na ◽  
E.Y. Kim ◽  
J.H. Kim ◽  
K.R. Son ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Diffusion Weighted Imaging ◽  
Imaging Findings ◽  
Diffusion Weighted ◽  
And Diffusion
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