Table 1

Popliteal artery atherosclerosis measured by lumen diameter and plaque cross sectional area before and after angioplasty

		Patient 1			Patient 2			Patient 3			Patient 4
		Angio (% dia)	MR (% dia)		MR (% area)	Angio (% dia)		MR (% dia)	MR (% area)		Angio (% dia)	MR (% dia)	MR (% area)	Angio (% dia)	MR (% dia)	MR (% area)
Preangioplasty	90	85	97	95	91	96	80	83	96	40	50	91
One week	20	37	72	20	36	69	30	38	60	20	75	93
One month		33	67		63	83		56	75		75	92
Three months		44	74		60	85		62	79		58	75
Six months		50	82		60	81		58	83		50	77

Angio (% dia), per cent lumen diameter narrowed, assessed by conventional angiography; MR (% dia), per cent lumen diameter narrowed, assessed by magnetic resonance angiography; % area, percentage of the total cross sectional area of the artery occupied by plaque as defined by magnetic resonance imaging.