接下来的几天里，医生们准备为布兰登做脊髓穿刺。

Then after a few days doctors were ready to try injecting the stem cells into Brandon's spine.

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脊髓穿刺和PET扫描已被证实是检测高危患者板块形成的有效工具，罗森堡说。

Spinal taps and PET scans have proven to be effective tools in looking for plaque buildup in at-risk patients, Rosenberg said.

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如果在腰椎穿刺之前开始治疗，可能很难培养出脊髓液中的细菌并确诊。

If treatment is started prior to the lumbar puncture it may be difficult to grow the bacteria from the spinal fluid and confirm the diagnosis.

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