Table 2:

Radiologic features of deep lumbosacral spinal dural arteriovenous fistulas

Case No.	MRI/MRA						DSA
Case No.	Shunt Location	T2/T1 Hyperintensity (Extension)	Contrast Enhancement (Extension)	Perimedullary Vein Enlargement (Extension)	Prominent FV	Prominent Lumbar Vein	DSA until Diagnosis	Arterial Feeder
1	S1 R	T7-conus	T9–T10	Mild, T7–T8	No	No	4	Iliolumbar artery R
2	L5 R	T9–T11	T5–T11	Mild, T5–T11	No	Yes	4	Iliolumbar artery R
3	S1 L	T8-conus	Absent	Absent	Yes	No	4	Middle sacral artery L
4	S1 R	T9-conus	Absent	Mild, T10–T12	Yes	No	3	Iliolumbar artery R
5	S1 R	T3-conus	ND	ND	Yes	No	3	Iliolumbar artery R
6	L5 L	T8-conus	T9-conus	Mild, T10–T12	No	Yes	2	L5 L
7	S1 R	T6-conus	T8–T12	Mild, T7–T11	No	Yes	2	Lateral sacral artery L
8	S2 R	T10–T12	T11–T12	Mild, T11–T12	Yes	No	3	Lateral sacral artery R
9	L5 L	T4-conus	T9–T12	Absent	No	Yes	3	L4 L
10	S1 R	T4-conus	Absent	Severe, T6-conus	Yes	No	2	Lateral sacral artery R
11	S1 R	T6-conus	T12–L1	Mild, T6-conus	No	Yes	5	Iliolumbar artery bilateral
12	S3 R	T10-conus	T12	Severe, T7-conus	Yes	No	3	Lateral sacral artery bilateral
13	S1 R	T2-conus	T12-conus	Mild, T8-conus	Yes	No	4	Iliolumbar artery R
14	S2 L	T5-conus	T7-conus	Mild, T8–L3	Yes	No	4	Iliolumbar artery bilateral
15	S1 L	T5-conus	Absent	Severe, T7-conus	Yes	No	2	Lateral sacral artery L
16	S2 L	Absent	T10–11	Absent	Yes	No	2	Iliolumbar artery L
17	S1 L	T5-conus	T4–L1	Mild, T3–T4	Yes	No	2	Iliolumbar artery bilateral
18	S2 L	T8–T12	T8–T11	Mild, T9–T12	Yes	No	5	Iliolumbar artery bilateral
19	L5 R	T8-conus	T8-conus	Severe, T6–T12	No	Yes	2	Iliolumbar artery R
20	S2 R	T12-conus	T9-conus	Mild, T7–T11	No	Yes	1	Lateral sacral artery