DICOM Attribute

Presentation Pixel Magnification Ratio (0070,0103)

Keyword
PresentationPixelMagnificationRatio
VR
FL
VM
1

Definition

Ratio of displayed pixels to source pixels, specified in one dimension. Required if Presentation Size Mode (0070,0100) is MAGNIFY. A Value of 1.0 would imply that one pixel in the referenced image would be displayed as one pixel on the display (i.e., it would not be interpolated if the aspect ratio of the image pixels is 1:1). A Value of 2.0 would imply that one pixel in the referenced image would be displayed as 4 pixels on the display (i.e., up-sampled by a factor of 2 in each of the row and column directions). A Value of 0.5 would imply that 4 pixels in the referenced image would be displayed as 1 pixel on the display (i.e., down-sampled by a factor of 2 in each of the row and column directions). If the source pixels have an aspect ratio of other than 1:1, then they are assumed to have been interpolated to a display pixel aspect ratio of 1:1 prior to magnification.

From NEMA PS3.3 §C.10.4.

Attribute Metadata

Tag
(0070,0103)
Keyword
PresentationPixelMagnificationRatio
Name
Presentation Pixel Magnification Ratio
Value Representation (VR)
FL
Value Multiplicity (VM)
1
Status
Active
Source
NEMA PS3.6 (table_6-1)

This attribute is part of the current DICOM Standard. Its value representation is FL with multiplicity 1.

Used in 1 Module

This attribute uses the FL Value Representation. Multiplicity 1 governs how many values may be encoded.

Integration Notes

Real-world integration guidance for engineers implementing this attribute in Mirth Connect, FHIR gateways, HL7 v2 bridges, and cloud DICOM services. Authoritative source data where available; reference examples and operational notes where they add value.

FHIR Mapping

No direct FHIR ImagingStudy mapping published for this attribute. Some tags map indirectly via the Patient, Endpoint, or ImagingSelection resources — Phase 2b will expand coverage to those.

HL7 v2 Equivalent

No standard HL7 v2 equivalent published for this attribute. Imaging-only attributes (Image Pixel data, technical acquisition parameters, modality-specific values) typically have no HL7 v2 carrier.

Cloud DICOM Support

AWS HealthImaging, Azure DICOM, and GCP Healthcare DICOM coverage rolls out by attribute. The QIDO-RS matching keys + Patient/Study/Series core (~50 attributes) are documented; lower-traffic attributes will be added as Saga teams encounter them in production.

Real-World Sample Values

No representative sample value available — this attribute isn't present in the de-identified pydicom fixture set. Add a fixture covering this attribute to expand coverage.

Mirth Connect Example

JavaScript transformer snippets for the most-queried tags will be added as coverage expands.

Common Operational Errors

Operational error patterns for the most-queried tags will be added as coverage expands.

DICOM Integration Services

Saga IT builds production DICOM integrations across Mirth Connect, FHIR gateways, and cloud imaging platforms. If you're working with PresentationPixelMagnificationRatio or the broader (0070,0103) context: