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Table 2: Characteristics of group A studies
Reference Year Pro/Ret Level of Evidence No. of Patients Time to Initial MRI Time to Follow-Up Imaging % of Patients Receiving Thrombolysis
Delgado-Mederos et al³⁰ 2007 Ret 4 113 6 hours 36–48 hours 100
Rivers et al²⁹ 2006 Pro 3b 46 <24 hours 1 or 3 months 0
Seitz et al²⁸ 2005 Pro 2b 64 <3 hours 8 days 45
Ritzl et al²⁷ 2004 Pro 2b 12 <24 hours 124 days 58
Schramm et al²⁶ 2004 Pro 3b 22 <6 hours 5 days^* 59
Schaefer et al²⁵ 2004 Ret 4 16 <6 hours 1–7 days 100
Fiehler et al²⁴ 2004 Pro 3b 68 <6 hours 4–7 days 40
Shih et al²³ 2003 Pro 3b 14 <6 hours 7 days 100
Schramm et al²² 2002 Pro 2b 20 <6 hours 5 days 40
Parsons et al²¹ 2002 Pro 3b 40 <6 hours 81 days 48
Schellinger et al²⁰ 2001 Pro 3b 41 <6 hours 2–5 days 56
Kidwell et al¹⁸ 2000 Pro 3b 7 <6 hours 7 days 100
Parsons et al¹⁹ 2000 Pro 2b 19 <24 hours 30–90 days Not specified
Beaulieu et al¹⁵ 1999 Pro 3b 21 <7 hours 30 days 60
Neumann-Haefelin et al¹⁷ 1999 Pro 2b 20 <24 hours 6–14 days 20
Sorensen et al¹⁶ 1999 Ret 4 23 <12 hours 3–59 days 0
Barber et al³¹ 1998 Pro 3b 18 <24 hours 7–120 days 6
Tong et al¹⁴ 1998 Ret 4 8 <6.5 hours 7 days 20
Note:—MRI indicates MR imaging; Ret, retrospective; Pro, prospective.
* Follow up imaging performed with CT.