11861-2

LOINC Code


LOINC code11861-2
name
descriptionSagittal diameter of the cisterna magna from the posterior aspect of the cerebellum to the inner aspect of the occipital bone measured in the same plane as is used to determine the maximal transaxial cerebellar diameter
statusACTIVE

Fully-Specified Name

componentDiameter.sagittal.mean
propertyLen  =  Length
timePt  =  Point in time:  To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements.
systemCisterna magna^Fetus
scaleQn  =  Quantitative:  The result of the test is a numeric value that relates to a continuous numeric scale. Reported either as an integer, a ratio, a real number, or a range. The test result value may optionally contain a relational operator from the set {<=, <, >, >=}. Valid values for a quantitative test are of the form "7", "-7", "7.4", "-7.4", "7.8912", "0.125", "<10", "<10.15", ">12000", 1-10, 1:256
methodEstimated from gestational age

Additional Names

short nameAverage; Avg; DIA; Diam; Est; Est from GA; estimation; Fetal; Gest; Gestation; Gyn; Gynecology; Length; OB; ObGyn; OBSTERICAL; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Point in time; predicted; Prenatal; QNT; Quan; Quant; Quantitative; Random

Basic Attributes

classOB.US
type2  Clinical
order vs. observationFet Cisterna ma
formula (readable)DIAMETER.SAGITTAL MEAN [mm] = - 0.41 + 0.312 * (gestational age) [wk]
example UCUM unitsmm
The Unified Code for Units of Measure (UCUM) is a code system intended to include all units of measures being contemporarily used in international science, engineering, and business (www.unitsofmeasure.org)

History/Usage

first released
last updated2.48
last change typeMAJ  - change to name field other than Component;
change reasonmm

Related Names

Y

Copyright © 2026 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2026, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. See https://loinc.org/license for the full LOINC copyright and license.

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