Table 2.

Dose area product (DAP) of endovascular stroke treatment according to the number of thrombectomy attempts

Patients receiving mechanical thrombectomy		DAP (Gy cm2)				Median increase of DAP due to each additional thrombectomy attempt (Gy cm2)	Median increase of DAP due to each additional thrombectomy attempt (%)	p value
Number of thrombectomy attempts	Patients, n	Mean (SD)	Median	IQR	MIN-MAX
1	204	88.6 (65.1)	68.7	51.2–106.8	11.6–470.6
2	122	123.8 (60.9)	106.4	84.8–155.6	31.2–456.9	37.7	54.9	< 0.001
3	79	143.4 (71.8)	130.2	89.1–183.6	41–391.5	23.9	22.4	0.044
4	59	181.8 (75.5)	169.9	128.4–244.1	60.1–375.3	39.7	30.5	0.001
5	31	246.3 (140.7)	227.6	146.3–294.6	73.7–773.6	57.6	33.9	0.019
≥ 6	49	261.6 (115.9)	242.2	183.8–332.7	62–597	14.7	6.4	0.346