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System for MR image-guided prostate interventions: Canine study
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DOI：10.1148/radiol.2283020911.png)
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摘要
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The purpose of this study was to demonstrate the use of a transrectal system that enables precise magnetic resonance (MR) image guidance and monitoring of prostate interventions. The system used a closed-bore 1.5-T MR imaging unit and enables one to take advantage of the higher signal-to-noise ratio achieved with traditional magnet designs, which is crucial for accurate targeting and monitoring of prostate interventions. In the first of the four canine studies, reliable needle placement, with all needles placed within 2 mm of the desired target site, was achieved. In two other studies, MR imaging was used to monitor distribution of injected contrast agent solution (gadopentetate dimeglumine mixed with trypan blue dye) in and around the prostate, thereby confirming that solution had been delivered to the desired tissue and also detecting faulty injections. In the final study, accurate placement and MR imaging of brachytherapy seeds in the prostate were demonstrated. The described system provides a flexible platform for a variety of minimally invasive MR image-guided therapeutic and diagnostic prostate interventions.
Keyword:
magnetic resonance (MR), experimental studies
magnetic resonance (MR), guidance
prostate neoplasms
prostate neoplasms, MR
prostate neoplasms, therapeutic radiology
期刊
IF:
15.2
论文数:
4.0W
被引数:
6.0W
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