Evaluation of Brain and Head and Neck Tumors with 4D Contrast-Enhanced MR Angiography at 3T
| Autor: | Hiroyuki Uetani, Y. Yamashita, Toshinori Hirai, Yutaka Kai, R. Murakami, Shinichiro Nishimura, Ryosei Minoda, M. Kitajima, Motohiro Morioka, Yoshinori Shigematsu |
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| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Adult
Gadolinium DTPA Male medicine.medical_specialty media_common.quotation_subject Contrast Media Stain Sensitivity and Specificity Imaging Three-Dimensional Image Interpretation Computer-Assisted medicine Contrast (vision) Humans Radiology Nuclear Medicine and imaging media_common Aged Neovascularization Pathologic business.industry Brain Neoplasms Head and neck tumors Mr angiography Reproducibility of Results Middle Aged Image Enhancement Head and Neck Neoplasms Female Neurology (clinical) Radiology business Magnetic Resonance Angiography Head and Neck |
| Zdroj: | AJNR Am J Neuroradiol |
| Popis: | BACKGROUND AND PURPOSE: Systematic assessment of brain and head and neck tumors with 4D-CE-MRA at 3T has not been investigated. The purpose of this study was to test the hypothesis that 4D-CE-MRA at 3T can replace DSA in the identification of feeding arteries and tumor stain to plan interventional procedures in hypervascular brain and head and neck tumors. MATERIALS AND METHODS: Fifteen consecutive patients with brain and head and neck tumors underwent 4D-CE-MRA at 3T and DSA. 4D-CE-MRA combined randomly segmented central k-space ordering, keyhole imaging, SENSE, and half-Fourier imaging. We obtained 30 dynamic scans every 1.9 seconds at an acquired spatial resolution of 0.9 × 0.9 × 1.5 mm; the matrix was 256 × 256. Two independent observers inspected the 4D-CE-MRA images for the main arterial feeders and tumor stain. Interobserver and intermodality agreement was assessed by κ statistics. RESULTS: For 4D-CE-MRA, the interobserver agreement was fair with respect to the main arterial feeders and very good for the degree of tumor stain (κ = 0.28 and 0.87, respectively). Intermodality agreement was moderate for the main arterial feeders (κ = 0.45) and good for the tumor stain (κ = 0.74). CONCLUSIONS: Although 4D-CE-MRA may be useful for evaluating tumor stain in hypervascular brain and head and neck tumors, it is not able to replace DSA in planning interventional procedures. |
| Databáze: | OpenAIRE |
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