| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Magnetic resonance imaging of pelvis and prostate using contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 2 | 
| Computerised tomography of neck with contrast for radiotherapy planning (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computerised tomography of head with contrast for radiotherapy planning (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computerised tomography of thoracic spine for radiotherapy planning (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computerised tomography of thorax with contrast for radiotherapy planning (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computerised tomography of breast with contrast for radiotherapy planning (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computerised tomography of urinary bladder with contrast for radiotherapy planning (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computerised tomography of axilla with contrast for radiotherapy planning (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computerised tomography of cervical spine for radiotherapy planning (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computerised tomography of prostate with contrast for radiotherapy planning (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computerised tomography of pelvis with contrast for radiotherapy planning (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging of mastoid with contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Ultrasonography of gallbladder with contrast | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography of head, neck, abdomen and pelvis with contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 3 | 
| Computed tomography of head, neck, abdomen and pelvis with contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 4 | 
| Fluoroscopic defaecating proctography with water soluble contrast | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography of whole body with contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Fluoroscopic angiography of posterior tibial artery using contrast with insertion of stent | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Fluoroscopic angiography of posterior tibial artery using contrast with insertion of drug eluting stent | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 2 | 
| Computed tomography of whole body with contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 2 | 
| Fluoroscopic angiography of anterior tibial artery using contrast with insertion of stent | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Fluoroscopic angiography of posterior tibial artery using contrast with insertion of stent | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 3 | 
| Fluoroscopic angiography of anterior tibial artery using contrast with insertion of drug eluting stent | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 2 | 
| Fluoroscopic angiography of posterior tibial artery using contrast with insertion of drug eluting stent | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 4 | 
| Contrast enhanced spectral mammography | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography of thorax, abdomen and pelvis with oral contrast only (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography of thorax, abdomen and pelvis with oral contrast only (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 2 | 
| Computed tomography of thorax, abdomen and pelvis with oral contrast only (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 3 | 
| Computed tomography of abdomen and pelvis with oral contrast only (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography of abdomen and pelvis with oral contrast only (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 2 | 
| Endoscopic retrograde cholangiopancreatography using single operator direct visualisation system (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Endoscopic retrograde cholangiopancreatography using single operator direct visualisation system (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 2 | 
| Fluoroscopy of tube device with contrast | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Dynamic magnetic resonance imaging of wrist with contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging of liver and spleen with contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| 3D CEUS (three dimensional contrast enhanced ultrasound) of abdominal aortic EVAR (endovascular aneurysm repair) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging of pelvis and rectum with contrast (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging of pelvis and rectum with contrast (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 2 | 
| Computed tomography of stomach with contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography of heart with contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging of heart with contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging with contrast for radiotherapy planning (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography nephrostography (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging of cervix with contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging of coccyx with contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging of oral cavity with contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging of liver and spleen with contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 2 | 
| Computed tomography of thorax, abdomen and pelvis with oral and intravenous contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography of thorax, abdomen and pelvis with oral and intravenous contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 2 | 
| Computed tomography of thorax, abdomen and pelvis with oral and intravenous contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 3 | 
| Computed tomography of abdomen and pelvis with oral and intravenous contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography of abdomen and pelvis with oral and intravenous contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 2 | 
| Magnetic resonance imaging of external auditory meatus with contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Selective salpingography using fluoroscopic guidance (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography triple phase intravenous pyelogram (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging of bilateral external auditory meatuses with contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging of bilateral external auditory meatuses with contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 2 | 
| Magnetic resonance imaging of right external auditory meatus with contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging of left external auditory meatus with contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging of vessel wall with contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging of lumbosacral plexus with contrast (procedure) | Using substance | False | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography of left atrial appendage with contrast (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging of spine with contrast for proton therapy planning (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging of abdomen with contrast for proton therapy planning (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging of pelvis with contrast for proton therapy planning (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging of chest with contrast for proton therapy planning (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging of neck with contrast for proton therapy planning (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging of head with contrast for proton therapy planning (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography of neck, thorax, abdomen and pelvis with oral and intravenous contrast (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography of bilateral temporal bones, brain and neck with contrast (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography of bilateral temporal bones, brain and neck with contrast (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 2 | 
| Computed tomography of bilateral temporal bones, brain and neck with contrast (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 3 | 
| Gated computed tomography of thoracic aorta with contrast (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography triple phase of bilateral kidneys with contrast (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography triple phase of bilateral kidneys with contrast (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 2 | 
| Computed tomography of neck, thorax, abdomen and pelvis with oral and intravenous contrast (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 2 | 
| Computed tomography of neck, thorax, abdomen and pelvis with oral and intravenous contrast (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 3 | 
| Computed tomography of neck, thorax, abdomen and pelvis with oral and intravenous contrast (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 4 | 
| Computed tomography of bilateral adrenal glands with contrast washout (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography of bilateral adrenal glands with contrast washout (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 2 | 
| Computed tomography four phase scan of liver with contrast (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging of whole body with contrast (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography dual phase of bilateral kidneys with contrast (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography dual phase of bilateral kidneys with contrast (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 2 | 
| Dynamic magnetic resonance imaging of head and neck with contrast (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography of bilateral temporal bones, brain and neck with contrast (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 4 | 
| Pleural phase computed tomography of thorax with contrast (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography triple phase of bilateral adrenal glands with contrast (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography triple phase of bilateral adrenal glands with contrast (procedure) | Using substance | True | Contrast media | Inferred relationship | Existential restriction modifier | 2 | 
| Iopanoic acid 500mg tablet | Has active ingredient | False | Contrast media | Inferred relationship | Existential restriction modifier |  | 
| Lipiodol Ultra fluid injection | Has active ingredient | False | Contrast media | Inferred relationship | Existential restriction modifier |  | 
| Dimeglumine gadopentetate enteral solution - product | Has active ingredient | False | Contrast media | Inferred relationship | Existential restriction modifier |  | 
| Dimeglumine gadopentetate 469.01mg/mL injection - product | Has active ingredient | False | Contrast media | Inferred relationship | Existential restriction modifier |  | 
| Gadoteridol 279.3mg/mL injection | Has active ingredient | False | Contrast media | Inferred relationship | Existential restriction modifier |  | 
| Dimeglumine gadopentetate 469.01mg/mL prefilled syringe - product | Has active ingredient | False | Contrast media | Inferred relationship | Existential restriction modifier |  | 
| SonoVue 40microlitres injection (pdr for recon)+solvent | Has active ingredient | False | Contrast media | Inferred relationship | Existential restriction modifier |  | 
| Sodium iopodate | Has active ingredient | False | Contrast media | Inferred relationship | Existential restriction modifier |  | 
| Ethyl esters of iodised fatty acids | Has active ingredient | False | Contrast media | Inferred relationship | Existential restriction modifier |  | 
| Ioxaglate | Has active ingredient | False | Contrast media | Inferred relationship | Existential restriction modifier |  | 
| Sulphur hexafluoride 40microlitres injection (pdr for recon)+solvent | Has active ingredient | False | Contrast media | Inferred relationship | Existential restriction modifier |  | 
| Iothalamate | Has active ingredient | False | Contrast media | Inferred relationship | Existential restriction modifier |  |