Table 2:

FA and ADC values, qualitative assessments, and angiomorphology in the 9 investigated patients

Patient	ROI Placement	T2 Hyperintensity	FA	Z-FA	ADC (10⁻³)	Z-ADC	Qualitative Results	AVM Type and Comments
1	C6	+ (congestion)	0.42	−11.83^*	55	−0.34	Separated	Perimedullary pial fistula fed by the lateral spinal artery; no measurement at the level of the nidus possible because no nidus-type arteriovenous shunt was present (fistulous AVM)
1	T5	−	0.73	−0.25	736	−2.02^*	Normal
2	C5		0.64	−3.77^*	938	−0.47	Normal	Glomerular intramedullary AVM fed by radiculopial and radiculomedullary arteries, false aneurysm, and signs of previous intramedullary hemorrhage present; measurements at the level of the nidus not possible because of artifacts from previous hemorrhage; measurements distal to the nidus not possible because of limited FOV
	T2	+ (cavity)	0.49	−9.21^*	787	−1.63	Separated
	T4	+ (cavity)	0.36	−14.18^*	1196	1.51	Separated
	Nidus T5						Partially interrupted
3	C1	−	0.70	−1.50	862	−1.06	Normal	Glomerular intramedullary AVM fed by the radiculopial network by posterolateral spinal arteries predominantly from the right side; measurement at the level of the nidus not possible because of previous embolization with glue and subsequent artifacts at that level
	Nidus C2–3						Partially interrupted
	C4	−	0.77	1.25	801	−1.53	Normal
	C6	−	0.79	1.78	715	−2.11^*	Normal
4	Nidus C1		0.59	−5.55^*	1113	0.87	Separated	Glomerular intramedullary AVM fed by radiculopial arteries; measurement cranial to the nidus not possible because of brain stem location
	C2	−	0.76	0.65	946	−0.42	Normal
	C7	−	0.78	1.63	767	−1.79	Normal
5	T6	−	0.78	1.58	1011	−0.01	Normal	Glomerular extramedullary AVM fed by radiculopial arteries; measurement at the level of the nidus not possible because of small remaining size of the cord
	T8	−	0.77	1.16	859	−1.08	Normal
	Nidus T9						Shifted
	T10	−	0.64	−3.57^*	951	−0.38	Normal
6	C2	−	0.64	−3.59^*	873	−0.97	Normal	Glomerular intramedullary AVM fed by the anterior and posterolateral spinal arteries; measurement at the level of the nidus not possible because of small remaining size of the cord
	C5	+ (cavity)	0.36	−14.12^*	1451	3.47^*	Separated
	Nidus C6						Partially interrupted
	C7	+ (cavity)	0.49	−9.25^*	1380	2.93^*	Separated
	T3	−	0.67	−2.50^*	915	−0.65	Normal
7	C2	−	0.62	−4.45^*	1139	1.07	Normal	Glomerular intramedullary AVM fed by the anterior spinal artery with an associated aneurysm that arose from a sulcal artery and concomitant hemorrhage within the cord; measurement at the level of the nidus not possible because of artifacts because of blood degradation products
	C4	−	0.65	−3.48^*	1152	1.18	Normal
	T1	−	0.50	−8.72^*	1077	0.60	Partially interrupted
	Nidus T2						Completely interrupted
	T3	−	0.55	−6.88^*	1014	0.11	Partially interrupted

Note:—AVM indicates arteriovenous malformation; FA, fractional anisotropy; ADC, apparent diffusion coefficient.
* These values are statistically significantly different from the normal volunteers whose mean values were 0.748 with a range of 0.7–0.8 for FA and 1.00 10⁻³ with a range of 0.77–1.25 10⁻³ for the ADC.