Table 1.

Peak syrinx fluid and cerebrospinal fluid velocities in the subarachnoid space (SAS) as a function of inlet velocity amplitude, cycle rate and syrinx size for the quasi-sinusoidal inlet profile.

		Inlet velocity 1.56 cm/sec		Inlet velocity 3.13 cm/sec		Inlet velocity 4.69 cm/sec
Cycle rate (cpm)	Syrinx diameter (mm)	SAS velocity (cm/sec)	Syrinx velocity (cm/sec)	SAS velocity (cm/sec)	Syrinx velocity (cm/sec)	SAS velocity (cm/sec)	Syrinx velocity (cm/sec)
60	No syrinx	1.79	NA	3.57	NA	5.36	NA
	2	2.06	1.41	4.10	2.82	6.16	4.21
	6	2.43	1.03	4.86	1.87	7.31	3.08
90	No syrinx	1.85	NA	3.23	NA	5.55	NA
	2	1.87	1.47	3.73	2.85	5.62	4.42
	6	2.25	0.91	4.49	1.71	6.65	2.65
120	No syrinx	1.82	NA	3.64	NA	5.46	NA
	2	2.19	4.35	4.25	7.87	5.57	10.94
	6	3.06	3.18	7.92	7.70	13.09	12.70

cpm: cycles per minute; NA: not available; SAS: subarachnoid space.