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Table 3 Time to peak (min), 20 min/maximum and postvoid/maximum count ratios for the right and left kidneys following administration of NTA and MAG3

From: Head to head comparison of [99mTc]Tc(CO)3(NTA) and [99mTc]Tc-MAG3 in patients with suspected obstruction

Subject Left kidney
TTP (min)
Right kidney
TTP (min)
Left kidney
20 min/max
Right kidney
20 min/max
Left kidney
PV/max
Right kidney
PV/max
NTA MAG3 NTA MAG3 NTA MAG3 NTA MAG3 NTA MAG3 NTA MAG3
1 2.6 2.8 2.8 3.9 0.12 0.17 0.23 0.56 0.05 0.14 0.1 0.4
2 ID ID ID ID ID ID ID ID ID ID ID ID
3 2.5 2.8 2.5 2.5 0.14 0.21 0.08 0.19 0.05 0.12 0.03 0.12
4 AK AK ID ID AK AK ID ID AK AK ID ID
5 3.7 3.7 3.2 2.5 0.51 0.82 0.18 0.2 0.79 0.76 0.11 0.11
6 3.2 4 2.1 2.7 0.18 0.23 0.22 0.24 0.09 0.17 0.11 0.16
7 2 2.5 2.6 16 0.08 0.17 0.36 0.97 0.07 0.14 0.11 0.59
8 AK AK 3.9 10.8 AK AK 0.58 0.88 AK AK 0.53 0.65
9 2.4 2.8 2.3 4.8 OT OT OT OT 0.1 0.21 0.16 0.27
10 2.1 2.3 3.2 2.1 OT OT OT OT 0.09 0.2 0.12 0.21
11 2.2 3.1 2.6 3 OT OT OT OT 0.15 0.16 0.08 0.14
13 2.2 7.8 2.4 2.6 0.34 0.79 0.09 0.16 NA NA NA NA
14 3.2 3.5 23.5 21.3 OT OT OT OT 0.13 0.21 1.04 1.08
15 3 3.3 2.1 2.6 0.39 0.64 0.28 0.41 0.65 0.42 0.24 0.28
16 3.2 4.8 2.5 3.8 0.2 0.15 0.09 0.16 0.07 0.09 0.06 0.08
17 2.5 3.8 3.5 6.8 0.6 0.67 0.66 0.83 0.66 0.6 0.45 0.49
18 2.7 3.3 2.1 5.3 0.29 0.46 0.4 0.73 0.24 0.37 0.49 0.69
19 1.9 2.5 2.6 2.7 0.2 0.15 0.14 0.25 0.07 0.09 0.1 0.13
Mean 2.63 3.53 3.99 5.84 0.28 0.41 0.28 0.47 0.23 0.26 0.25 0.36
SD 0.53 1.35 5.23 5.55 0.17 0.28 0.19 0.31 0.26 0.20 0.27 0.29
P 0.0224   0.0677   0.0201   0.0031   0.2334   0.0046  
  1. Patient 12 withdrew from the study prior to tracer injection
  2. AK, absent kidney; ID, infiltrated dose; NA, the postvoid image was not acquired and the ratio could not be calculated; OT, patient had to void before the study was completed