TABLE 3.
Percentage Agreement Between Organ- and Structure-Specific Diagnosis Codes From the Three Half-Dose Configurations and the Full Dose Plus Filtered Back-Projection (FBP) Configuration in CT Examinations of Three Abdominopelvic Organs (Liver, Kidney, and Small Bowel)
| Organ, Reader | Absolute Agreement, % (No./Total)
|
Normality Agreement, % (No./Total)
|
||||
|---|---|---|---|---|---|---|
| FBP | SAFIRE | aNLM | FBP | SAFIRE | aNLM | |
|
| ||||||
| Liver | ||||||
| Reader 1 | 80 (20/25) | 92 (23/25) | 92 (23/25) | 88 (22/25) | 92 (23/25) | 96 (24/25) |
| Reader 2 | 92 (23/25) | 96 (24/25) | 100 (24/24) | 96 (24/25) | 100 (25/25) | 100 (24/24) |
| Reader 3 | 92 (23/25) | 88 (22/25) | 88 (22/25) | 92 (23/25) | 88 (22/25) | 88 (22/25) |
| All readers | 88 (66/75) | 92 (69/75) | 93 (69/74) | 92 (69/25) | 93 (70/75) | 95 (70/74) |
| Kidney | ||||||
| Reader 1 | 88 (22/25) | 76 (19/25) | 96 (24/25) | 100 (25/25) | 84 (21/25) | 100 (25/25) |
| Reader 2 | 96 (24/25) | 96 (24/25) | 96 (24/25) | 96 (24/25) | 96 (24/25) | 96 (24/25) |
| Reader 3 | 100 (25/25) | 92 (23/25) | 100 (25/25) | 100 (25/25) | 92 (23/25) | 100 (25/25) |
| All readers | 95 (71/75) | 88 (66/75) | 97 (73/75) | 99 (74/75) | 91 (68/75) | 99 (74/75) |
| Small bowel | ||||||
| Reader 1 | 88 (22/25) | 88 (22/25) | 88 (22/25) | 96 (24/25) | 92 (23/25) | 96 (24/25) |
| Reader 2 | 96 (23/24) | 100 (24/24) | 96 (23/24) | 100 (24/24) | 100 (24/24) | 100 (24/24) |
| Reader 3 | 72 (18/25) | 72 (18/25) | 83 (20/24) | 84 (21/25) | 84 (21/25) | 83 (20/24) |
| All readers | 85 (63/74) | 86 (64/74) | 89 (65/73) | 93 (69/74) | 92 (68/74) | 93 (68/73) |
Note—The three half-dose configurations were FBP, sinogram-affirmed iterative reconstruction (SAFIRE, Siemens Healthcare), and adaptive nonlocal means (aNLM). Absolute agreement was the percentage of cases with absolute agreement between diagnosis codes. Normality agreement occurred if both the full-dose and the half-dose configurations were normal or if both were not normal.