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Table 7 Movements between the classes from the first to the second acquisition by reconstruction method

From: When is reacquisition necessary due to high extra-cardiac uptake in myocardial perfusion scintigraphy?

Change from first to second acquisition Reconstruction method Total (%)
FBP (%) OSEM (%)
Improvement by 4 points 29 (2.5) 22 (3) 51 (2.7)
Improvement by 3 points 156 (13.4) 85 (11.6) 241 (12.7)
Improvement by 2 points 226 (19.4) 165 (22.5) 391 (20.6)
Improvement by 1 point 345 (29.6) 228 (31.1) 573 (30.2)
No change 340 (29.1) 170 (23.2) 510 (26.8)
Worsening by 1 point 62 (5.3) 56 (7.6) 118 (6.2)
Worsening by 2 points 8 (0.7) 6 (0.8) 14 (0.7)
Worsening by 3 points - 1 (0.1) 1 (0.05)
Worsening by 4 points - 1 (0.1) 1 (0.05)
Total 1,166 (100) 734 (100) 1,900 (100)
  1. FBP, filtered back-projection; OSEM, ordered subset expectation maximization.