DICOM PS3.17 2024d - Explanatory Information

DDDDD Post-coordinated Fetal Cardiac Ultrasound Measurement Examples (Informative)

DDDDD.1 Examples of Post-Coordination of Fetal Cardiac Ultrasound Measurements

Encoding a wide range of measurements in a predictable, organized pattern can be achieved with well-managed post-coordination. To provide report sections containing such post-coordinated measurements, TID 5228 “Cardiac Ultrasound Fetal Measurement Section” includes TID 5229 “Cardiac Ultrasound Post-Coordinated Measurement Section” which in turn includes TID 5302 “Post-coordinated Echo Measurement”. Table DDDDD-1 provides examples of common fetal cardiac ultrasound measurements and demonstrates how the post-coordinated elements in key rows of TID 5302 “Post-coordinated Echo Measurement” can be populated to encode them.

Row 1 of TID 5302 contains a fully pre-coordinated code which encompasses the details in the subsequent rows of TID 5302. Table DDDDD-1 has a Pre-Coordinated column which offers such a pre-coordinated code value for the measurement. If a code is not present, the recording system is responsible for finding or creating a code, as described in the Content Item Descriptions for TID 5302 Row 1.

Table DDDDD-1. Examples of Post-Coordination of Fetal Cardiac Ultrasound Measurements

Nominal Measurement

Pre-Coordinated

Key Post-Coordinated Elements of TID 5302

Notes

Finding Site

Measured Property

Image Mode

Cardiac Cycle Point

TID 5302 – Row 1 (Code Meaning)

Row 1 (Coding Scheme Designator: Code Value)

Row 8

Row 10

Row 13

Row 15

Measurement Type = Direct

PV S-wave peak velocity

LN: 79917-1

(430757002, SCT, "Pulmonary Vein")

(20355-4, LN, "Peak Blood Velocity")

PW Dop

(444371003, SCT, "S-wave")

PV D-wave peak velocity

LN: 79916-3

Pulmonary Vein

Peak Blood Vel

PW Dop

D-wave

IVC S-wave peak velocity

DCM: 131062

Inferior Vena Cava

Peak Blood Flow

PW Dop

S-wave

Mitral valve annulus diameter

DCM: 131060

Mitral Valve Annulus

Diameter

2D

Diastole

Tricuspid valve annulus diameter

DCM: 131061

Tricuspid Valve Annulus

Diameter

2D

Diastole

Right ventricular inlet length

DCM: 131017

Right Ventricle

Length

2D

End Diastole

Method=Inlet Included

Left ventricular inlet length

DCM: 131018

Left Ventricle

Length

2D

End Diastole

Method=Inlet Included

Mitral a-wave peak velocity

LN: 80066-4

Mitral Valve

Peak Blood Vel

PW Dop

A-wave

Tricuspid a-wave peak velocity

LN: 79923-9

Tricuspid Valve

Peak Blood Vel

PW Dop

A-wave

IVC a-wave peak velocity

DCM: 131063

Inferior Vena Cava

Peak Blood Flow

PW Dop

A-wave

Mitral E-wave peak velocity

LN: 80070-6

Mitral Valve

Peak Blood Vel

PW Dop

E-wave

Tricuspid E-wave peak velocity

LN: 79925-4

Tricuspid Valve

Peak Blood Vel

PW Dop

E-wave

Mitral septal e' peak velocity

LN: 78185-6

Medial Mitral Annulus

Peak Tissue Vel

TDI

E-wave

Mitral septal a' peak velocity

LN: 81396-4

Medial Mitral Annulus

Peak Tissue Vel

TDI

A-wave

Mitral septal s' peak velocity

LN: 78187-2

Medial Mitral Annulus

Peak Tissue Vel

TDI

S-wave

Mitral lateral e' peak velocity

LN: 78186-4

Lateral Mitral Annulus

Peak Tissue Vel

TDI

E-wave

Mitral lateral a' peak velocity

LN: 81397-2

Lateral Mitral Annulus

Peak Tissue Vel

TDI

A-wave

Mitral lateral s' peak velocity

LN: 78188-0

Lateral Mitral Annulus

Peak Tissue Vel

TDI

S-wave

LVOT VTI

LN: 80030-0

LV Outflow Tract

VTI

PW Dop

Systole

Flow=Antegrade

RVOT VTI

LN: 80089-6

RV Outflow Tract

VTI

PW Dop

Systole

Flow=Antegrade

LV Stroke Volume

LN: 8769-2

Left Ventricle

Stroke Volume

PW Dop

Systole

Method=Doppler Volume Flow

RV Stroke Volume

LN: 8779-1

Right Ventricle

Stroke Volume

PW Dop

Systole

Method=Doppler Volume Flow

Left Ventricle Cardiac Output

LN: 8735-3

Left Ventricle

Cardiac Output

PW Dop

Systole

To index by fetal weight, Measurement Type would be Indexed, and Measurement Divisor would be Fetal Weight, the value of which would be recorded elsewhere.

Right Ventricle Cardiac Output

DCM: 131053

Right Ventricle

Cardiac Output

PW Dop

Systole

Combined Cardiac Output

DCM: 131054

Heart

Cardiac Output

PW Dop

Systole

Descending Aorta Diameter

LN: 18013-3

Descending Aorta

Diameter

B-mode

End Systole

UA Resistivity Index

LN: 12018-8

(50536004, SCT, "Umbilical artery")

Resistivity index

PW Dop

Full Cycle

Method = Free Cord Loop

Fetal ACA Resistivity Index

LN: 12012-1

(60176003, SCT, "Anterior Cerebral Artery")

Resistivity index

PW Dop

Full Cycle

Fetal MCA Resistivity Index

LN: 12014-7

(17232002, SCT, "Middle Cerebral Artery")

Resistivity index

PW Dop

Full Cycle

UA Pulsatility Index

LN: 12003-0

(50536004, SCT, "Umbilical artery")

Pulsatility Index

PW Dop

Full Cycle

Method = Free Cord Loop

MCA Pulsatility Index

LN: 11999-0

(17232002, SCT, "Middle Cerebral Artery")

Pulsatility Index

PW Dop

Full Cycle

DV Pulsatility Index in Veins

DCM: 131014

(367624001, SCT, "Ductus Venosus")

Pulsatility Index

PW Dop

Full Cycle

DV Peak Velocity Index in Veins

DCM: 131015

(367624001, SCT, "Ductus Venosus")

Peak Velocity Index

PW Dop

Full Cycle

PV VTI Forward

DCM: 131050

Pulmonary Vein

VTI

PW Dop

Full Cycle

Flow=Antegrade

PV VTI Reverse

DCM: 131051

Pulmonary Vein

VTI

PW Dop

A-Wave

Flow=Retrograde

Measurement Type = Ratio

PV VTIR/VTIF ratio

DCM: 131052

Pulmonary Vein

VTI

PW Dop

A-Wave

Measurement Divisor = PV VTI Forward

Mitral Septal E/e' ratio

LN: 78189-8

Mitral Valve

Peak Blood Vel

PW Dop

E-Wave

Measurement Divisor = Mitral Septal e' peak velocity

Mitral Lateral E/e' ratio

LN: 78190-6

Mitral Valve

Peak Blood Vel

PW Dop

E-Wave

Measurement Divisor = Mitral Lateral e' peak velocity

Cerebroplacental ratio

DCM: 131009

(17232002, SCT, "Middle Cerebral Artery")

Pulsatility Index

PW Dop

Full Cycle

Measurement Divisor = Umbilical Artery Pulsatility Index

Umbilicocerebral ratio

DCM: 131010

(50536004, SCT, "Umbilical artery")

Pulsatility Index

PW Dop

Full Cycle

Measurement Divisor = MCA Pulsatility Index

Method = Free Cord Loop Method

IVC preload index

DCM: 131011

Inferior Vena Cava

Peak Blood Vel

PW Dop

A-Wave

Flow=Retrograde (during numerator)

Measurement Divisor = IVC S-wave peak velocity

IVC S/a

DCM: 131012

Inferior Vena Cava

Peak Blood Vel

PW Dop

S-wave

Flow=Antegrade (during numerator)

Measurement Divisor = IVC a-wave peak velocity


DICOM PS3.17 2024d - Explanatory Information