DICOM Attribute

Tomotherapeutic Leaf Initial Closed Durations (3010,009A)

Keyword
TomotherapeuticLeafInitialClosedDurations
VR
FD
VM
1-n

Definition

The time in seconds each leaf is closed at the beginning of the Control Point interval, see . The number of leaves (N) is equal to Number of Parallel RT Beam Delimiters (300A,0648). The N Values shall be provided in the order of Parallel RT Beam Delimiter Boundaries (300A,0649). Required if RT Record Flag (300A,0639) equals NO and at least one leaf open time is not symmetrical about the mid-point of the Control Point interval and the conditions in are satisfied.

From NEMA PS3.3 §C.36.17.

Attribute Metadata

Tag
(3010,009A)
Keyword
TomotherapeuticLeafInitialClosedDurations
Name
Tomotherapeutic Leaf Initial Closed Durations
Value Representation (VR)
FD
Value Multiplicity (VM)
1-n
Status
Active
Source
NEMA PS3.6 (table_6-1)

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

Used in 1 Module

This attribute uses the FD Value Representation. Multiplicity 1-n 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 TomotherapeuticLeafInitialClosedDurations or the broader (3010,009A) context: