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magnetic resonance imaging

vr.tr.magnetic-resonance-imaging · thing-q161238

Let an agent explain how MRI works and what it shows, relay its main techniques and safety rules from radiological sources, describe functional MRI and research uses, and route personal questions about scans to clinicians.

Thing Registry Activities and processes ACT.ACT
Bundle → Layer → Finding → QuestionsClassifiersWhat it isWhy it existsDistinguishing featuresWhat robots and AI may and may not doMoral aspectsOwnersLinks to other meta-modelsIdentity and identifiersDirect propertiesRecognitionCapabilities and actionsHazards and failure modesStandards and interfacesContext of useSources

Bundle → Layer → Finding → Questions Filled

4 bundles · 8 layers · 8 findings · 16 questions

Understand What MRI is.

Physics

Physics.

Physics

Physics.

  1. How does MRI use magnetic fields, gradients and radio waves to form images? definition
  2. Is the question about MRI, CT, ultrasound or PET? boundary

Techniques

Techniques.

Techniques

Techniques.

  1. What are MRA, cardiac MRI, MR myelography, diffusion imaging and fMRI, and what does each show? definition
  2. Which entry fits the specific technique? action
Clinical Clinical use.

Uses

Uses.

Uses

Uses.

  1. When is MRI used in neurology, oncology, cardiology and musculoskeletal medicine, in general terms? provenance
  2. Is the user asking about their own scan or results, which needs their clinician? boundary

Experience

Having a scan.

Experience

Experience.

  1. What happens during a scan, and how are contrast agents used? provenance
  2. Which references are standard? provenance
Safety Safety.

Safety

Safety rules.

Safety

Safety.

  1. What safety rules apply for implants, metal objects and pregnancy? provenance
  2. Which sources are cited? provenance

Contrast

Contrast agents.

Contrast

Contrast.

  1. What are gadolinium contrast agents, and what concerns exist, with attribution? provenance
  2. Which entry fits MRI contrast agent? action
Context Research and history.

Research

fMRI research.

Research

Research.

  1. How do event-related and resting-state fMRI map brain function, and what are their limits, with attribution? provenance
  2. Which entry fits functional MRI? action

History

History.

History

History.

  1. How was MRI developed by Lauterbur, Mansfield, Damadian and others? provenance
  2. Which entry fits the history of MRI? action

Classifiers Filled

Family
Thing Registry
Category
Activities and processes
Entry kind
thing
Plane
ACT
Domain
ACT.ACT
Other names and narrower kinds
cardiac magnetic resonance imaging, magnetic resonance myelography, magnetic resonance angiography, functional magnetic resonance imaging, event-related functional magnetic resonance imaging, resting-state fMRI, Spinal fMRI, interventional magnetic resonance imaging, MR-guided focused ultrasound, MR arthrogram, whole-body MRI, multiparametric magnetic resonance imaging

What it is Filled

A medical imaging technique that uses strong magnetic fields, magnetic field gradients and radio waves to produce detailed images of organs and tissues without ionising radiation, based on nuclear magnetic resonance of hydrogen nuclei, with specialised forms such as magnetic resonance angiography of vessels, cardiac MRI, magnetic resonance myelography of the spinal canal, and functional MRI including event-related and resting-state fMRI that map brain activity through blood oxygenation; MRI is central to neurology, oncology, musculoskeletal and cardiac diagnosis.

Why it exists Filled

Let an agent explain how MRI works and what it shows, relay its main techniques and safety rules from radiological sources, describe functional MRI and research uses, and route personal questions about scans to clinicians.

Distinguishing features Filled

  • No ionising radiation
  • Soft tissue contrast
  • Multiple contrasts and sequences
  • Functional imaging

What robots and AI may and may not do Filled

Must not

  • Report or interpret a scan as a diagnosis in place of a radiologist.
  • Clear a person or an object for entry into the scanner room.
  • Dismiss implant, metal or pregnancy screening questions as formalities.
  • Share or publish scan images or reports without the patient's consent, since images can identify them.

Only with a human decision

  • Any scanner safety clearance for a person, implant or equipment.
  • Any decision about scanning, contrast agents or reporting for a patient.

May

  • Explain how magnetic resonance imaging works and what its specialised forms show.
  • Help a patient prepare for a scan by relaying the clinic's own safety questionnaire and instructions.
  • Support radiologists with reference information at their request.

Moral aspects Filled

  • The magnet is always on, and unscreened metal has killed and injured people in scanner rooms.
  • Scans are identifiable health data, and head images can reconstruct a person's face.

Who is affected

  • Patients
  • Radiography staff and anyone entering the room
  • People whose images are shared

Owners Filled

Steward

The clinic or hospital that operates the scanner; the treating clinician answers for its use.

Master systems

  • Hospital imaging and radiology records

Links to other meta-models Filled

parent

  • Q28946191 - registry parent class
  • Q931309 - registry parent class

related

  • medical imaging - in registry terms
  • non-invasive imaging - in registry terms
  • nuclear magnetic resonance - of hydrogen nuclei
  • computed tomography - which uses X-rays

What else AI and robots need to interact with it Filled

Identity and identifiers required Filled

  • Vercy registry: vr.tr.magnetic-resonance-imaging
  • Wikidata: Q161238 (https://www.wikidata.org/wiki/Q161238)
  • MeSH: D008279 magnetic resonance imaging

Direct properties not applicable Not applicable

  • clinical field strength: 1.5 or 3 tesla - typical
  • first human MRI: 1977 year
  • scan duration: about 15-60 minutes

Plane ACT: no invented physical properties.

Recognition optional Filled

  • Imaging by nuclear magnetic resonance
  • Structural MRI, MRA, cardiac MRI, MR myelography, fMRI including event-related and resting-state
  • CT uses X-rays; ultrasound uses sound; PET uses radiotracers
  • A large tube-shaped scanner producing greyscale cross-sectional images.

Capabilities and actions required Filled

  • explain physics and images
  • relay techniques
  • relay safety rules
  • route personal questions

Hazards and failure modes required Filled

  • Ferromagnetic projectile and implant hazards
  • Gadolinium contrast concerns
  • Agents interpreting personal scans
  • Overinterpretation of fMRI findings

Standards and interfaces required Filled

  • MR safety standards such as IEC 60601-2-33
  • Medical device regulation of scanners and contrast agents
  • Radiology appropriateness criteria

Context of use required Filled

  • Imaging the body without ionising radiation.
  • structural MRI with T1, T2 and other contrasts
  • magnetic resonance angiography
  • cardiac magnetic resonance
  • magnetic resonance myelography and spine imaging
  • diffusion and perfusion MRI
  • functional MRI: task-based, event-related and resting-state
  • MR spectroscopy

Sources Filled

  1. Wikidata item Q161238: magnetic resonance imaging - identity and sense of the item
  2. Wikipedia: Magnetic resonance imaging - general description of the item

Open questions

  • Should functional MRI and MRA be separate primary entries?
  • How should radiological references be linked?
  • The registry entry has merged aliases naming techniques; should they be split off?

Machine files

Card as JSON Specification Card backlog vercy.card/1

Provenance

thing registry research (pass 2) · unreviewed

Built from: models/things/publications/thing-q161238/spec.json