| Item type: | Article | ||||||||||||||||||||||||||||||
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| Journal or Publication Title: | Ultrasonics sonochemistry | ||||||||||||||||||||||||||||||
| Publisher: | ELSEVIER SCIENCE BV | ||||||||||||||||||||||||||||||
| Place of Publication: | AMSTERDAM | ||||||||||||||||||||||||||||||
| Volume: | 15 | ||||||||||||||||||||||||||||||
| Number of Issue or Book Chapter: | 4 | ||||||||||||||||||||||||||||||
| Page Range: | pp. 510-516 | ||||||||||||||||||||||||||||||
| Date: | 2008 | ||||||||||||||||||||||||||||||
| Institutions: | Medicine > Lehrstuhl für Neurologie | ||||||||||||||||||||||||||||||
| Identification Number: |
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| Classification: |
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| Keywords: | BRAIN PERFUSION; IMAGING MODES; COLOR DOPPLER; TUMOR PERFUSION; GROWTH-FACTOR; ANGIOGENESIS; RADIATION; TISSUE; QUANTIFICATION; PERMEABILITY; neurosonology ultrasound contrast agent; neurooncology; Transcranial perfusion sonography | ||||||||||||||||||||||||||||||
| Dewey Decimal Classification: | 600 Technology > 610 Medical sciences Medicine | ||||||||||||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||||||||||||
| Refereed: | Yes, this version has been refereed | ||||||||||||||||||||||||||||||
| Created at the University of Regensburg: | Unknown | ||||||||||||||||||||||||||||||
| Item ID: | 29302 |
Web of ScienceAbstract
Purpose: The aim of this study was to evaluate brain perfusion differences in patients with high grade gliomas after partial tumor resection and irradiation/chemotherapy between tumor and non-tumor hemisphere by transcranial perfusion sonography (TPS) employing a contrast burst imaging (CBI) technique. Methods: Six patients with glioblastoma (WHO Grade IV) in the temporoparietal region within the ...
Abstract
Purpose: The aim of this study was to evaluate brain perfusion differences in patients with high grade gliomas after partial tumor resection and irradiation/chemotherapy between tumor and non-tumor hemisphere by transcranial perfusion sonography (TPS) employing a contrast burst imaging (CBI) technique. Methods: Six patients with glioblastoma (WHO Grade IV) in the temporoparietal region within the defined axial diencephalic scanning plane were examined by TPS during follow-up. All subjects had an adequate acoustic temporal bone window. Transtemporal insonation on brain tumor and non-tumor hemisphere was performed with a bolus-injection of sulphur hexafluoride-based contrast agent (10 mg IV, 5 mg/ml - SonoVue (R), Bracco, Altana, Switzerland). Recorded images were analysed off-line by Quanticon Software (3D-Echotech, Munich, Germany) and time intensity curve parameters [area under the curve (AUC, dB s), peak intensity (PI, dB), time to peak (TTP, s)] in five regions of interest (ROI) [thalamus anterior, thalamus posterior, nucleus lentiformis, white matter, whole hemisphere] were evaluated. Statistical analyses were performed. Results: Perfusion differences between brain tumor and non-tumor hemispheres were detected with contrast burst imaging (CBI) technique with a significantly greater mean AUC (5343.69 dB s vs. 4625.04 dB s, p < 0.028) and a significantly prolonged TTP (32.72 s vs. 28.91 s, p < 0.046) in the tumor hemisphere. Conclusion: Within our study population, TTP and AUC seem to be the most robust parameters for the evaluation of cerebral perfusion differences assessed by transcranial perfusion sonography with CBI technique. We hypothesize that these results correlate with microvascular changes due to treatment regimens, such as microvessel necrosis after irradiation and chemotherapy. Above that, TPS may be of value for the long-term follow-up of brain tumor therapy concept. (c) 2007 Elsevier B.V. All rights reserved.
Metadata last modified: 29 Sep 2021 07:39
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