MagniscreenMRI Protocols & Planning
Protocol Explorer

Neuro protocol

Orbits MRI

Orbital MRI for proptosis, diplopia, vision loss, ptosis, vascular orbital lesions, and optic nerve disorders. Dedicated thin fat-saturated orbital sequences only; does not include full brain workup. Use the Brain and Orbits protocol when brain coverage is also required.

neuroorbitsoptic nerveproptosisdiplopiavision lossptosisorbital tumorwithout contrastconditional contrast

For protocol planning and internal reference only. Follow institutional MRI safety screening, contrast, dosage, and GFR policies.

Decision supportContrast GuidanceDefault contrast approach and conditional indications.

Contrast indications

  • Tumor

Dose notes

  • Follow department policy regarding contrast administration and dosing.
Acquisition listSequencesRequired and conditional series for the exam.
SequencePlanePhaseRequiredNotes
Localizer Sagittal/Coronal/AxialAnynoncontrastYesCenter at the glabella.
Sagittal STIRsagittalnoncontrastYes-
Axial FLAIRaxialnoncontrastYes-
Axial T1 FS ThinaxialnoncontrastYesMust cover the entire orbits and optic nerves.
Axial T2 FS ThinaxialnoncontrastYesMust cover the entire orbits and optic nerves.
Coronal T1 FS ThincoronalnoncontrastYesMust cover from the eyelids to the dorsum sella.
Coronal T2 FS ThincoronalnoncontrastYesMust cover from the eyelids to the dorsum sella.
Axial T1 FS Thin +CaxialpostcontrastConditionalAcquire when contrast is indicated.
Coronal T1 FS Thin +CcoronalpostcontrastConditionalAcquire when contrast is indicated.
PositioningSlice PlanningPlane-specific planning instructions and guide images for technologists.

sagittal

Sagittal planning

  • Cover the entire brain from left to right.
  • Cover from the top of the brain through the C2 level.
  • Cover from temporal bone to temporal bone.
  • Align parallel with the longitudinal fissure.

axial

Axial thin orbital planning

  • Thin axial sequences must cover the entire orbits and optic nerves.

Orbits axial planning

axial

Source slide: 10. Cropped planning image from BRAIN & ORBITS / Axial.

coronal

Coronal thin orbital planning

  • Thin coronal sequences must cover from the eyelids to the dorsum sella.

Orbits coronal planning

coronal

Source slide: 9. Cropped planning image from BRAIN & ORBITS / Coronal.

Anatomic extentCoverage RulesMinimum coverage expectations and alignment rules.

sagittal

Sagittal field of view

Cover the entire brain from left to right and from the top of the brain through C2.

axial

Axial thin orbital coverage

Cover the entire orbits and optic nerves.

coronal

Coronal thin orbital coverage

Cover from the eyelids to the dorsum sella.

TechniqueSuggested Technique SpecificationsPlane-level vendor-neutral guidance from the source protocol.

sagittal

slice thickness
<= 5.0 mm
gap
<= 2.0 mm

axial

slice thickness thin
<= 3.0 mm
gap thin
<= 1.0 mm

coronal

slice thickness thin
<= 3.0 mm
gap thin
<= 1.0 mm
Conditional workflowSpecial SituationsAdjustments for contrast, hardware, and protocol-specific conditions.

Contrast indicated

  • Add axial T1 FS thin postcontrast sequence.
  • Add coronal T1 FS thin postcontrast sequence.

Surgical hardware present

  • Document hardware-specific requirements as needed.
Future detailAdvancedSource-backed scanner, vendor, and site-specific notes when available.

Advanced technical details, scanner variants, and planning guide assets can appear here as protocol data expands.