| Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values | 
| Injection of contrast media for radiography by catheter, retrograde | Is a | Injection of contrast media for radiography by catheter | true | Inferred relationship | Existential restriction modifier |  |  | 
| Injection of contrast media for radiography by catheter, retrograde | Using | Catheter, device | false | Inferred relationship | Existential restriction modifier |  |  | 
| Injection of contrast media for radiography by catheter, retrograde | Method | Injection - action | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Injection of contrast media for radiography by catheter, retrograde | Direct substance | Radiographic contrast media | false | Inferred relationship | Existential restriction modifier |  |  | 
| Injection of contrast media for radiography by catheter, retrograde | Direct device | Catheter, device | false | Inferred relationship | Existential restriction modifier |  |  | 
| Injection of contrast media for radiography by catheter, retrograde | Direct substance | Contrast media | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Injection of contrast media for radiography by catheter, retrograde | Using access device | Catheter, device | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Injection of contrast media for radiography by catheter, retrograde | Method | Injection - action | true | Inferred relationship | Existential restriction modifier | 1 |  | 
| Injection of contrast media for radiography by catheter, retrograde | Using access device | Catheter, device | true | Inferred relationship | Existential restriction modifier | 1 |  | 
| Injection of contrast media for radiography by catheter, retrograde | Direct substance | Contrast media | true | Inferred relationship | Existential restriction modifier | 1 |  | 
| Injection of contrast media for radiography by catheter, retrograde | Has focus | Radiographic imaging procedure | true | Inferred relationship | Existential restriction modifier | 2 |  |