Added value of computed tomography venography in the identification of abnormities in veins of lower extremities

Figures & data

Figure 1. Number, age range, mean age, and median age (years) of the patients.

Age scope

Median age

Average age

Table 1. Diseases and health status of CTV + DUS group.

Gender	LEV abn*	LEE or LESTD	CCVD	Tumor	Post CD	Other PO	PE
Male (n = 42)	31 (2)	5	9	0	0	1	4
Female (n = 33)	20 (3)	6	2	4	3	0	1
Total (n = 75)	51 (5)	11	11	4	3	1	5

*number of May-Thurner syndrome cases.

Table 2. The reported number of deep vein abnormalities in lower extremities (by CTV alone, both CTV and DUS, and DUS alone).

Gender	Type	CIV	IIV	EIV	CFV	POV	ATV/PTV	PEV	Subtotal
Male (n = 42)	Thrombosis	0, 0, 0	0, 0, 0	0, 0, 0	2, 4, 1	2, 2, 2	0, 1, 0	1, 0, 0	5, 7, 3
	Stenosis	20 (7) , 0, 1	1, 0, 0	16 (8) , 0, 2	11 (5), 0, 2	10 (4), 0, 0	6 (2), 0, 0	1, 0, 0	65 (26)*, 0, 5
	Varicosity	0, 0, 0	0, 0, 0	1, 0, 0	5, 0, 1	2, 0, 1	1, 0, 1	1, 0, 0	8, 0, 3
	Subtotal	20, 0, 1	1, 0, 0	17^^, 0, 2	18^^, 4, 4	14, 2, 3	7, 1, 1	3, 0, 0	80*, 7, 11
Female (n = 33)	Thrombosis	0, 0, 0	0, 0, 0	0, 0, 0	1, 2, 1	1, 3, 0	0, 0, 1	0, 0, 0	2, 5, 2
	Stenosis	18 (9)^^, 3, 1	3 (1), 0, 0	7 (6)^^, 1, 1	7, 0, 3	5 (3), 0, 0	0, 0, 0	0, 0, 0	40 (19)*, 4, 5
	Varicosity	0, 0, 0	0, 0, 0	0, 0, 0	2, 0, 0	1, 0, 0	0, 0, 0	0, 0, 0	3, 0, 0
	Subtotal	18, 3, 1	3, 0, 0	7, 1, 1	10^^, 2, 4	7, 3, 0	0, 0, 1	0, 0, 0	45*, 9, 7
Total (n = 75)		38,3,2	4, 0, 0	24, 1, 3	28^^, 6, 8	21, 5, 3	7, 1, 2	3, 0, 0	125*, 16, 18

Notes: Thirteen cases indicated dissatisfaction with DUS exploration

*p <.05, by CTV alone vs. by both CTV and DUS plus DUS alone.

^{^}p <.05, in CIV plus EIV vs. in other deep veins of lower extremities.

Figure 2. Mix of lower extremity deep vein abnormalities reported by CTV and DUS.

CTV

CTV&DUS

DUS

CTV

IIV

EIV

CFV

POV

ATV/PTV

PEV

Table 3. The reported number of intermuscular and superficial abnormalities in lower extremities (by CTV alone, both CTV and DUS, and DUS alone).

Gender	Type	CMV	LESV
			GSV	SSV	Subtotal
Male  (n = 42)	Thrombosis	0, 0, 3	0, 0, 1	0, 0, 0	0, 0, 1
	Stenosis	0, 0, 0	0, 0, 0	0, 0, 0	0, 0, 0
	Varicosity	1, 0, 17	5, 2, 1	0, 0, 2	4, 1, 3
	Subtotal	1, 0, 17	5, 2, 2	0, 0, 2	4, 1, 4
Female  (n = 33)	Thrombosis	0, 0, 6	0, 0, 0	0, 0, 0	0, 0, 0
	Stenosis	0, 0, 0	0, 0, 0	0, 0, 0	0, 0, 0
	Varicosity	2, 2, 2	0, 0, 2	1, 0, 0	1, 0, 1
	Subtotal	2, 2, 8	0, 0, 2	1, 0, 0	1, 0, 1
Total (n = 75)		3,2,25	5, 2, 4	1, 0, 2	5, 1, 5

Table 4. The number of abnormalities in the lower extremity veins reported in the CTV group.

Gender	Type	LEDV								CMV	LESV
		CIV	IIV	EIV	CFV	POV	ATV/PTV	PEV	Sub-total		GSV	SSV	Sub-total
Male (n = 67)	Thrombosis	2	1	4	3	3	1	0	14	0	0	0	0
	Stenosis	45 (23)	1	16 (11)	27 (10)	6 (4)	3	2 (2)	100 (50)	0	0	0	0
	Varicosity	3	1	1	7	5	5	0	22	6	11	3	14
	Subtotal	50	3	21	37	14	9	2	136	6	11	3	14
Female (n = 69)	Thrombosis	1	0	1	3	1	2	0	8	0	0	0	0
	Stenosis	39 (11)	0	3 (3)	15 (2)	6 (4)	4	0	67 (20)	0	0	0	0
	Varicosity	1	0	2	4	1	4	1	13	4	5	0	5
	Subtotal	41	0	6	22	8	10	1	88	4	5	0	5
Total (n = 136)		91	3	27	59	22	19	3	224	10	16	3	19

Figure 3. Gender and left–right comparison of the ratio between the number of lower extremity deep vein abnormalities reported by CTV and the number of cases.

Male-left

Male-right

Female-left

Female-right. Notes: *p < 0.05, left vs right for the same gender. ^#p <.05, male vs female for the same side. The ratios between the number of lower extremity deep vein abnormalities reported by CTV and the number of patients.

Figure 4. Percentages of the patients with lower extremity deep vein thrombosis (including old thrombosis) reported by CTV.

Old thrombosis

Fresh thrombosis

None thrombosis

Table 5. The agreements and disagreement between the reports of CTV and intravascular angiography.

Patient code	Gender	Age (years)	Report in agreement	Report of disagreement
1	Male	50	local severe stenosis in bilateral CIVs	Have not
2	Male	51	Local thrombosis in left CIV	Have not
3	Male	55	Old thrombosis and collateral circulation in left POV Thrombosis in CIV Thrombosis and collateral circulation in CFV	Have not
4	Male	69	Patent left CIV and EIV	Have not
5	Female	49	Thrombosis and collateral circulation in CFV	CTV has not reported POV obstruction Intravenous angiography has not reported thrombosis in left CIV
6	Female	50	Obstruction in left CIV	Have not
7	Female	65	CFV, POV were patent Stenosis in left CIV	Have not
8	Female	72	Have not	CTV has not reported severe stenosis at the left CIV fork

Data availability statement

All data generated or analyzed during this study are included in this published article.