| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Ventriculoscopic exploration of ventricle of brain | Using device | True | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Ventriculoscopic exploration of ventricle of brain | Using device | True | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Diagnostic endoscopic examination of ventricle of brain and biopsy of lesion of ventricle of brain | Using device | False | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Diagnostic endoscopic examination of ventricle of brain and biopsy of lesion of ventricle of brain | Using access device | False | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 3 | 
| Brain ventriculoscopy | Using device | False | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Endoscopic extirpation of lesion of ventricle of brain | Using access device | False | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Therapeutic endoscopic operations on ventricle of brain | Using access device | False | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified therapeutic endoscopic operation on ventricle of brain | Using access device | False | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Therapeutic endoscopic operation on ventricle of brain NOS | Using access device | False | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified diagnostic endoscopic examination of ventricle of brain | Using device | False | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified diagnostic endoscopic examination of ventricle of brain | Using device | False | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Diagnostic endoscopic examination of ventricle of brain NOS | Using device | False | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Diagnostic endoscopic examination of ventricle of brain NOS | Using device | False | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Brain ventriculoscopy | Using device | True | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Endoscopic extirpation of lesion of ventricle of brain | Using access device | True | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Therapeutic endoscopic operations on ventricle of brain | Using access device | False | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified therapeutic endoscopic operation on ventricle of brain | Using access device | False | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Therapeutic endoscopic operation on ventricle of brain NOS | Using access device | False | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Endoscopy of ventricle of brain and biopsy of lesion of ventricle of brain | Using access device | True | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Endoscopy of ventricle of brain and biopsy of lesion of ventricle of brain | Using device | True | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Endoscopic extirpation of lesion of ventricle of brain | Using device | True | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Endoscopic extirpation of lesion of ventricle of brain | Using access device | True | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 3 | 
| Therapeutic endoscopic operation on ventricle of brain NOS | Using access device | False | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified diagnostic endoscopic examination of ventricle of brain | Using device | False | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified diagnostic endoscopic examination of ventricle of brain | Using device | False | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Other specified therapeutic endoscopic operation on ventricle of brain | Using access device | False | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Diagnostic endoscopic examination of ventricle of brain NOS | Using device | False | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Diagnostic endoscopic examination of ventricle of brain NOS | Using device | False | Ventriculoscope, device | Inferred relationship | Existential restriction modifier | 2 |