Table 2.

Echocardiography and CMR data in 19 patients.

No.	Echocardiography						CMR
	Maximal septal thickness, mm	Length of AML, mm	LVOT gradient at rest, mm Hg			Reduction of gradient, %	The distribution of hypertrophied segments in septum	Hypertrophied and displacement PM
			Before ablation	3 days after ablation	6 months after ablation
1	21.7	28.9	65	160	24	63	2, 3, 9a	No
2	15.5	28.2	113	66	81	28	2, 3a	Yes
3	15.9	22.0	80	21	7	91	0a	No
4	19	20.4	96	87	21	78	-	-
5	19.2	28.2	157	95	102	35	-	-
6	16.4	31.1	72	129	54	25	2, 3, 9a	Yes
7	17.2	32.6	64	65	62	3	2, 3, 9	Yes
8	21.5	28.6	134	90	44	67	3	No
9	17.4	28.9	108	87	81	25	2, 3a	Yes
10	18.1	28.4	96	11	51	47	2a	Yes
11	22.5	26.2	78	62	42	46	2, 3	Yes
12	23.3	32.3	105	117	80	25	2, 8, 9	Yes
13	15.7	28.4	125	85	96	23	2, 3, 9	Yes
14	18.8	26.6	54	11	11	80	2	Yes
15	19.5	26.0	53	20	8	85	0	Yes
16	14.3	28.5	66	50	14	79	0	No
17	41.3	27.6	76	88	46	39	2, 3, 8, 9, 14	Yes
18	15.1	30.2	66	88	50	17	2, 3, 9	Yes
19	32.1	30.4	57	60	39	32	-	-

The distribution of hypertrophied segments in septum and hypertrophied and displacement PM was measured in CMR. The distribution of hypertrophied segments in septum is recorded according to the nomenclature for tomographic imaging of the heart (Figure 1B).

AML, anterior mitral leaflet; PM, papillary muscle; LVOT, left ventricular outflow tract.

^aCMR is applied after ablation.