| Autor: |
YU Na, YAN Min, FU Langzhou, HU Tao, LI Zhiyong, ZHONG Lijuan, ZHOU Xinjie, ZHOU Daiquan |
| Jazyk: |
čínština |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
Di-san junyi daxue xuebao, Vol 42, Iss 20, Pp 2069-2075 (2020) |
| Druh dokumentu: |
article |
| ISSN: |
1000-5404 |
| DOI: |
10.16016/j.1000-5404.202005207 |
| Popis: |
Objective To evaluate the effect of single-energy computed tomography (CT) combined with multi-artifact removal (MAR) for removing metal artifacts and optimizing blood vessel display in patients with coil embolization for intracranial aneurysms. Methods Thirty-two patients with intracranial aneurysms undergoing coil embolization under digital subtraction angiography (DSA) in our hospital between January and October in 2019 were enrolled in this study. After the surgery, the patients were scanned by gemstone spectral imaging (GSI) combined with MAR technique and post-processing with spectral monoenergy imaging technique. Two senior physicians scored the cranial vascular images acquired at a 10 KeV interval within 40 KeV to 140 KeV (the images acquired at 40 KeV and ≥100 KeV were excluded for poor quality). Nine single-energy images were reconstructed at 5 KeV intervals between 50 KeV and 90 KeV, and the noise level, signal-to-noise ratio (SNR) and artifact index (AI) of the images were evaluated. Results The SNR of the images tended to decrease with the increase of the energy level and showed significant differences between the energy levels 65 KeV and 70 KeV and between 75 KeV and 80 KeV (P < 0.05), but not between the other energy levels. The images acquired at 60~65 KeV had low AI indexes and the highest objective score for image quality with optimal display the blood vessels after coil embolization. Conclusion Energy spectral CT within the range of 60~65 KeV combined with MAR can effectively remove metal artifacts in patients after coil embolization for intracranial aneurysms. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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