Table 3. Percentage visualization of the upper urinary tract.
| Area# | CTU Observer 1 | CTU Observer 2 | MRU Observer 3 | MRU Observer 4 | ||||
|---|---|---|---|---|---|---|---|---|
| * V = 100% N (%) | V>75% N (%) | V = 100% N (%) | V>75% N (%) | V = 100% N (%) | V>75% N (%) | V = 100% N (%) | V>75% N (%) | |
| A | 25 (64.1) | 37 (94.9) | 39 (100) | 39 (100) | 35 (89.7) | 39 (100) | 33 (84.6) | 39 (100) |
| B | 27 (69.2) | 38 (97.4) | 39 (100) | 39 (100) | 31 (79.8) | 39 (100) | 33 (84.6) | 39 (100) |
| C | 31 (79.5) | 38 (97.4) | 35 (89.7) | 38 (97.4) | 37 (94.9) | 39 (100) | 33 (84.6) | 39 (100) |
| D | 21 (53.8) | 34 (87.2) | 35 (89.7) | 35 (89.7) | 39 (100) | 39 (100) | 34 (87.2) | 39 (100) |
| E | 19 (48.7) | 34 (87.2) | 31 (79.8) | 33 (84.6) | 39 (100) | 39 (100) | 34 (87.2) | 39 (100) |
| F | 14 (35.9) | 23 (59.0) | 25 (64.1) | 35 (89.7) | 38 (97.4) | 39 (100) | 35 (89.7) | 39 (100) |
| Total | 137 (58.5) | 204 (87.2) | 204 (87.2) | 219 (93.6) | 219 (93.6) | 234 (100) | 202 (86.3) | 234 (100) |
Percentage visualization (total = 100% and subtotal >75%) of different areas of the upper urinary tract (UUT) as visually evaluated by four independent observers with excretory phase CT and MR urography (whole examination with three time points jointly analyzed). Twenty patients with 39 UUT-units were evaluated.
*V = Excretory phase visualization of the urothelium.
#Area: A = upper cavities; B = middle and Lower cavities; C = Renal pelvis; D = Ureter, proximal third; E = Ureter, middle third; F = Ureter, lower third.