DICOM PS3.17 2021e - Explanatory Information

AAAA.3 CT Protocol For Tumor Volumetric Measurements

This section includes a Defined Protocol examples of a CT Protocol for Tumor Volumetric Measurements for a clinical trial. These examples are intended to illustrate the encoding mechanisms of the DICOM CT Protocol Storage IODs, not to suggest particular values for clinical trials. Although the examples in this section were originally inspired by protocol documents previously published by ACRIN, some values here were modified and are likely out of date. Parties interested in the current ACRIN protocols are encouraged to visit https://www.acrin.org/

AAAA.3.1 Common Context

Table AAAA.3-1 is basically the same for each model so it is shown here rather than duplicating it. The second half is then shown below in Table AAAA.3-2.

Table AAAA.3-1. CT Tumor Volumetric Measurement - Context

Attribute

Tag

Value

Clinical Trial Sponsor Name

(0012,0010)

Deckard Pharmaceuticals

Clinical Trial Protocol ID

(0012,0020)

6678

Clinical Trial Protocol Name

(0012,0021)

DP6678 Phase III

Clinical Trial Site ID

(0012,0030)

""

Clinical Trial Site Name

(0012,0031)

""

Clinical Trial Coordinating Center Name

(0012,0060)

Tyrell Core Labs

Responsible Group Code Sequence

(0008,0220)

""

Equipment Modality

(0008,0221)

CT

Protocol Name

(0018,1030)

CT Tumor Volumetric Measurement

Potential Scheduled Protocol Code Sequence

(0018,9906)

(6678-1, 99DP, "DP6678 Phase III CT Protocol")

Potential Requested Procedure Code Sequence

(0018,9907)

(72253-8, LN, "CT CAP WO contrast")

Potential Reasons for Procedure

(0018,9908)

Metastatic non-small cell lung cancer\tumor volumetric measurements

Contraindications Code Sequence

(0018,990B)

(77386006, SCT, "Patient currently pregnant")

Content Creator's Name

(0070,0084)

Jane Investigator

Protocol Design Rationale

(0018,9910)

See DP6678 Phase III Protocol documents: http://ctrialdocs.tyrell.co.ca/DP6678_protocol.aspx.

In particular, see discussion in Section 3 (CT Acquisition Parameters and Image Data Analysis) of the Protocol Document:

The Spacing Between Slices may be increased as long as the overlap between slices is maintained between 0% and 20% overlap.

The Slice Thickness may be increased up to 1.5mm as long as the Spacing Between Slices is correspondingly increased to maintain between 0% and 20% overlap.

Protocol Planning Information

(0018,990F)

Use of intravenous contrast media, presence of motion artifacts or violation of slice width, slice interval or voxel size constraints will disqualify the CT scan series.

Instance Creation Date

(0008,0012)

20150607

Instance Creation Time

(0008,0013)

115623

Patient Specification Sequence

(0018,9911)

Instruction Sequence

(0018,9914)

>Instruction Index

(0018,9915)

1

>Instruction Text

(0018,9916)

"Scan the chest in full inspiration"

>Instruction Index

(0018,9915)

2

>Instruction Text

(0018,9916)

"Set reconstruction diameter to span from outer rib to outer rib"

Patient Positioning Instruction Sequence

(0018,991B)

>Instruction Index

(0018,9915)

1

>Instruction Text

(0018,9916)

"Position arms above the head."

Anatomic Region Sequence

(0008,2218)

(51185008, SCT, "Chest")

Primary Anatomic Structure Sequence

(0008,2228)

(310787001, SCT, "Lung and Mediastinum")


DICOM PS3.17 2021e - Explanatory Information