| Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values | 
| Computed tomography angiography of head, neck and thorax with contrast | Is a | Computed tomography of head and thorax | false | Inferred relationship | Existential restriction modifier |  |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Is a | Computed tomography of neck and thorax | false | Inferred relationship | Existential restriction modifier |  |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Is a | Computed tomography of head and neck | false | Inferred relationship | Existential restriction modifier |  |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Is a | Computed tomography angiography of vascular structure of neck with contrast | false | Inferred relationship | Existential restriction modifier |  |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Is a | Angiography of vascular structure of head | false | Inferred relationship | Existential restriction modifier |  |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Is a | Computed tomography angiography of thorax with contrast | false | Inferred relationship | Existential restriction modifier |  |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Is a | Angiography of intrathoracic vessels | false | Inferred relationship | Existential restriction modifier |  |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Method | Computed tomography imaging - action | true | Inferred relationship | Existential restriction modifier | 3 |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Method | Computed tomography imaging - action | false | Inferred relationship | Existential restriction modifier | 4 |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Procedure site - Direct | Vascular structure of neck | false | Inferred relationship | Existential restriction modifier | 4 |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Method | Computed tomography imaging - action | false | Inferred relationship | Existential restriction modifier | 5 |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Procedure site - Direct | Vascular structure of head | false | Inferred relationship | Existential restriction modifier | 5 |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Procedure site - Direct | Structure of intrathoracic blood vessel | false | Inferred relationship | Existential restriction modifier | 3 |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Is a | Computed tomography angiography of head with contrast | false | Inferred relationship | Existential restriction modifier |  |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Is a | Computed tomography angiography of neck and thorax with contrast | true | Inferred relationship | Existential restriction modifier |  |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Is a | Computed tomography of head and thorax with contrast | false | Inferred relationship | Existential restriction modifier |  |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Procedure site - Direct | Vascular structure of head | true | Inferred relationship | Existential restriction modifier | 1 |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Using substance | Contrast media | true | Inferred relationship | Existential restriction modifier | 1 |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Method | Computed tomography imaging - action | true | Inferred relationship | Existential restriction modifier | 1 |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Method | Computed tomography imaging - action | true | Inferred relationship | Existential restriction modifier | 2 |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Procedure site - Direct | Vascular structure of neck | true | Inferred relationship | Existential restriction modifier | 2 |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Using substance | Contrast media | true | Inferred relationship | Existential restriction modifier | 2 |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Using substance | Contrast media | true | Inferred relationship | Existential restriction modifier | 3 |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Procedure site - Direct | Structure of blood vessel of thoracic cross-sectional segment of trunk | true | Inferred relationship | Existential restriction modifier | 3 |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Is a | Computed tomography angiography of head and neck with contrast | true | Inferred relationship | Existential restriction modifier |  |  | 
| Computed tomography angiography of head, neck and thorax with contrast | Is a | Computed tomography of head, neck and thorax with contrast | true | Inferred relationship | Existential restriction modifier |  |  |