Table 1:

Syrinx maximum transverse diameter and location in participants^{^a}

Patients with Syrinx	Syrinx Location	Spinal Injury	Maximum Syrinx Diameter (mm)	Flow Measurements
SP1	T6–T7	T6	4.2	BOS, T5^{^b} (AS), T7 (BS)
SP2	C6–T1	C6	17.1	BOS, C4^{^b} (AS), T2 (BS)
SP3	C1–C6	C6	23.4	BOS (AS), C4,^{^b} T1 (BS)
SP4	T2–T6	T5	8.2	BOS, T1^{^b} (AS), T7 (BS)
SP5	T1–T4	T3	15.0	C7^{^b} (AS), T5 (BS)
SP6	L1–L2	L1	9.2	BOS, T12^{^b} (AS), L2 (BS)

Note:—AS indicates above the syrinx; BS, below the syrinx; BOS, base of skull.
↵a Data obtained at these levels were used to compare flow in the participants with syrinx (Fig 2).
↵b CSF flow measurements obtained at this spinal level were used to compare flow with that of controls at C5 (Fig 3).