Status: current, Not sufficiently defined by necessary conditions definition status (core metadata concept). Date: 31-Jan 2002. Module: SNOMED CT core
Descriptions:
Id | Description | Lang | Type | Status | Case? | Module |
5277869017 | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | en | Definition | Active | Entire term case sensitive (core metadata concept) | SNOMED CT core |
5277870016 | A broad term that encompasses several types of imaging studies that use ionising radiation for visualisation of internal parts of the body using X-ray techniques, for example computed tomography. | en | Definition | Active | Entire term case sensitive (core metadata concept) | SNOMED CT core |
414916017 | Radiographic imaging | en | Synonym (core metadata concept) | Active | Entire term case insensitive (core metadata concept) | SNOMED CT core |
414917014 | Radiology techniques | en | Synonym (core metadata concept) | Active | Entire term case insensitive (core metadata concept) | SNOMED CT core |
671227019 | Radiographic imaging - action (qualifier value) | en | Fully specified name | Active | Entire term case insensitive (core metadata concept) | SNOMED CT core |
2669814017 | Radiographic imaging - action | en | Synonym (core metadata concept) | Active | Entire term case insensitive (core metadata concept) | SNOMED CT core |
235311000077112 | action : imagerie radiographique | fr | Synonym (core metadata concept) | Active | Entire term case insensitive (core metadata concept) | SNOMED CT Switzerland NRC maintained Module |
Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values |
A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Is a | Imaging - action | true | Inferred relationship | Some |
Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group |
radiographie des tissus mous diaphragmatiques | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Soft tissue X-ray lymph nodes | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
fluoroscopie et radiographie | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 7 |
Fluoroscopy and radiography - brain | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Fluoroscopy and radiography - cervical column | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Fluoroscopy and radiography - skeleton | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Fluoroscopy and radiography - chest wall | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Fluoroscopy and radiography - urinary | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Fluoroscopy and radiography - female genital | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Tomography - head/neck | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 7 |
Tomography - skeleton/limbs | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 7 |
Tomography - larynx/trachea | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 7 |
Tomography - gallbladder | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 7 |
Tomography - kidneys | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 7 |
Tomography - chest | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 7 |
radiographie pulmonaire en série | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Stereotactic/stereoscopic test - brain | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Stereotactic/stereoscopic test - skull | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Stereotactic/stereoscopic test - face | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Stereotactic/stereoscopic test - heart | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Stereotactic/stereoscopic test - mediastinum | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
test stéréotaxique/stéréoscopique pulmonaire | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Stereotactic/stereoscopic test - abdomen | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Stereotactic/stereoscopic test - skeleton | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Stereotactic/stereoscopic test - soft tissue | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Postmortem radiographic imaging of soft tissue | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Screening plain X-ray of chest (procedure) | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Kymography | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
fluoroscopie avec injection d'une substance de contraste | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 7 |
Stereotactic/stereoscopic investigation | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
radiographie des tissus mous pulmonaires/bronchiques | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
radiographie des tissus mous pulmonaires/bronchiques | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Kymography/electrokymography | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Pneumoventriculography | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Pneumocisternography | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Plain bone X-ray NOS | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Soft tissue X-ray face NOS | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Soft tissue X-ray face NOS | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Standard chest X-ray NOS | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Soft tissue X-ray chest NOS | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Soft tissue X-ray chest NOS | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Soft tissue X-ray NOS | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Fluoroscopy NOS | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 7 |
Fluoroscopy and radiography NOS | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 7 |
Tomography - NOS | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 7 |
Kymography - NOS | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Stereotactic/stereoscopic test NOS | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Ureterogram (procedure) | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
radiographie des orbites osseux | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
radiographie des orbites osseux | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 3 |
Diagnostic imaging and nuclear medicine procedures | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Upper gastrointestinal tract examination with air contrast with kidney-ureter-bladder | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 3 |
radiographie de la colonne dorso-lombaire vue antéropostérieure et latérale | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
radiographie de la colonne dorso-lombaire vue antéropostérieure et latérale | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
examen radiologique du genou | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 3 |
radiographie du genou debout vue antéropostérieure | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
radiographie de la colonne dorso-lombaire debout | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
radiographie de la colonne dorso-lombaire debout | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
radiographie des sinus frontaux | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 3 |
radiographie du sinus maxillaire | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 3 |
radiographie des sinus ethmoïdaux | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
radiographie de l'articulation sternoclaviculaire | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 8 |
Stress X-ray thumb | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Instability views carpus | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Plain X-ray hand NOS | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Salivary gland X-ray | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 5 |
CT of thoracic spine with contrast | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Rectum double contrast examination | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Colon double contrast examination (procedure) | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Open excision of polyp of stomach | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Fibreoptic endoscopic dilation of colon | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Endoscopic dilation of lower bowel using fiberoptic sigmoidoscope | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Endoscopic dilation of sigmoid colon using rigid sigmoidoscope | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Angiography of intrathoracic vessels (procedure) | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Dilation of pyloric stricture | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Balloon dilation of pyloric stricture (procedure) | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Dilation of stricture - large intestine (procedure) | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Balloon dilation of stricture - large intestine (procedure) | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Prosthesis procedures - large intestine | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Replacement of prosthesis in large intestine | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Attention to prosthesis within large intestine | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Removal of prosthesis from large intestine | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
intervention radiologique œsophagienne | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
intervention radiologique gastrique | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
intervention radiologique sur le gros intestin | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Auditory meatogram | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Air meatogram | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Fluoroscopic localization for transbronchial biopsy and brushing | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Lower gastrointestinal tract contrast procedure | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Dilation of colonic stricture | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Dilation of colonic anastomotic stricture (procedure) | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
Dilation of rectal stricture | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Dilation of rectal anastomotic stricture | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Endoscopic retrograde cholangiopancreatography (procedure) | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
endoscopie diagnostique rétrograde d'un canal biliaire et du conduit pancréatique | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 1 |
Endoscopic retrograde cholangiography (procedure) | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 2 |
endoscopie rétrograde d'un canal biliaire | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | 3 |
Forearm dual energy X-ray absorptiometry scan (procedure) | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Heel dual energy X-ray absorptiometry scan (procedure) | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Hip dual energy X-ray absorptiometry scan (procedure) | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some | |
Lumbar spine dual energy X-ray absorptiometry scan (procedure) | Method | False | A broad term that encompasses several types of imaging studies that use ionizing radiation for visualization of internal parts of the body using X-ray techniques, for example computed tomography. | Inferred relationship | Some |
Start Previous Page 19 of 64 Next End
Reference Sets