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Patient characteristics and time interval between gadolinium administration and increased signal in the subarachnoid space on FLAIR
Patient No. Age (yr) Interval^a (days) Gadolinium (mL/kg) Creatinine Level (mg/dL) Lumbar Puncture Other Pertinent Findings
1 74 2 0.82 4.4 Negative^b Minimal leukoaraiosis
2 21 6 0.42 4.1 Negative None
3 73 6 0.27 4.4 CSF protein 50 mg/dL, otherwise negative Acute occipital infarct
4 70 1 0.35 2.5 CSF protein 154 mg/dL, otherwise negative Old infarction frontal lobe, tiny anterior meningioma without mass effect
5 79 1 0.24 2.4 No CSF collected Right PCA infarct, prostate metastasis to the clivus
6 81 1 0.61 1.5 CSF protein 108 mg/dL Minimal leukoaraiosis
7 74 1 0.31 1.0 Negative None
8 68 1 0.43 0.9 No CSF collected Right carotid occlusion with chronic watershed infarct
9 79 1 0.63 1.0 Negative Old lacunar infarcts
10 65 2 0.52 1.2 Negative None
11 56 2 0.40 2.3 Negative None
Note:—PCA indicates posterior cerebral artery.
a Between gadolinium administration and increased signal in the subarachnoid space on FLAIR.
b For subarachnoid hemorrhage, infection, or malignant cells.