Table 3

Studies of repeat US

Author & date of publication

Group

Number (%) of initial scans positive

Number (%) of repeat scans positive

Number (%) of positive scans (initial or repeat) confirmed by venography


Heijboer, 1993 [109]

All patients

93/491 (19%)

7/397 (1.8%)

84/89 (94%)

Cogo, 1998 [110]

All patients

400/1702 (24%)

12/1252 (1.0%)

-

Sluzewski, 1991 [111]

All patients

67/174 (39%)

0/98 (0%)

-

Birdwell, 1998 [112]

All patients

63/405 (16%)

7/342 (2.0%)

23/28 (82%)

Birdwell, 2000 [113]

All patients

95/709 (13%)

9/521 (1.7%)

39/47 (83%)

Studies of unselected patients combined

35/2610 (1.34%)

146/164 (89.0%)

Bernardi, 1998 [116]

Positive D-dimer

260/946 (27%)

5/88 (5.7%)

-

Kraaijenhagen, 2002 [117]

Positive D-dimer

391/1739 (22%)

17/518 (3.0%)

-

Studies of patients with a positive D-dimer combined

22/606 (3.63%)

-

Wells, 1997 [114]

Intermediate Wells score

27/193 (14%)

3/166 (1.8%)

-

Tick, 2002 [115]

Intermediate or high Wells score & positive D-dimer

300/531 (57%)

13/83 (15.7%)

-


Goodacre et al. BMC Medical Imaging 2005 5:6   doi:10.1186/1471-2342-5-6

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