Compartment size estimation with double wave vector diffusion-weighted imaging

2008 ◽  
Vol 60 (1) ◽  
pp. 90-101 ◽  
Author(s):  
Martin A. Koch ◽  
Jürgen Finsterbusch
Keyword(s):  
Wave Vector ◽  
Diffusion Weighted Imaging ◽  
Size Estimation ◽  
Diffusion Weighted

scholarly journals Failure of diffusion-weighted imaging in intraoperative 3 Tesla MRI to identify hyperacute strokes during glioma surgery

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Stefanos Voglis ◽  
Aimee Hiller ◽  
Anna-Sophie Hofer ◽  
Lazar Tosic ◽  
Oliver Bozinov ◽  
...  
Keyword(s):  
Diffusion Weighted Imaging ◽  
Brain Injuries ◽  
Infarct Volume ◽  
False Negative ◽  
Size Estimation ◽  
Glioma Surgery ◽  
Postoperative Mri ◽  
Diffusion Weighted ◽  
Tumor Types ◽  
Additional Resection

AbstractIntraoperatively acquired diffusion-weighted imaging (DWI) sequences in cranial tumor surgery are used for early detection of ischemic brain injuries, which could result in impaired neurological outcome and their presence might thus influence the neurosurgeon’s decision on further resection. The phenomenon of false-negative DWI findings in intraoperative magnetic resonance imaging (ioMRI) has only been reported in single cases and therefore yet needs to be further analyzed. This retrospective single-center study’s objective was the identification and characterization of false-negative DWI findings in ioMRI with new or enlarged ischemic areas on postoperative MRI (poMRI). Out of 225 cranial tumor surgeries with intraoperative DWI sequences, 16 cases with no additional resection after ioMRI and available in-time poMRI (< 14 days) were identified. Of these, a total of 12 cases showed false-negative DWI in ioMRI (75%). The most frequent tumor types were oligodendrogliomas and glioblastomas (4 each). In 5/12 cases (41.7%), an ischemic area was already present in ioMRI, however, volumetrically increased in poMRI (mean infarct growth + 2.1 cm3; 0.48–3.6), whereas 7 cases (58.3%) harbored totally new infarcts on poMRI (mean infarct volume 0.77 cm3; 0.05–1.93). With this study we provide the most comprehensive series of false-negative DWI findings in ioMRI that were not followed by additional resection. Our study underlines the limitations of intraoperative DWI sequences for the detection and size-estimation of hyperacute infarction. The awareness of this phenomenon is crucial for any neurosurgeon utilizing ioMRI.

MRT des Prostatakarzinoms: Diffusion Weighted Imaging im Vergleich mit der Histologie

2009 ◽  
Vol 181 (S 01) ◽  
Author(s):  
J Yamamura ◽  
G Salomon ◽  
J Graessner ◽  
A Hohenstein ◽  
M Graefen ◽  
...  
Keyword(s):  
Diffusion Weighted Imaging ◽  
Diffusion Weighted

Diffusion-Weighted Imaging Features of Urachal Abscess

2008 ◽  
Author(s):  
Ozgur Kilickesmez ◽  
Arda Kayhan ◽  
Bengi Gürses ◽  
Neslihan Tasdelen ◽  
Baki Ekci ◽  
...  
Keyword(s):  
Diffusion Weighted Imaging ◽  
Imaging Features ◽  
Diffusion Weighted ◽  
Urachal Abscess
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