11821-6

Fetal Head Mean biparietal diameter Estimated from gestational age

Active

Term Description

See Table II this reference for variance

Reference Information

Type	Source	Reference
Article	NCBI PubMed	Hadlock FP, Deter RL, Harrist RB, Park SK. Estimating fetal age: computer-assisted analysis of multiple fetal growth parameters. Radiology. 1984;152(2):497-501. Link to PubMed

LOINC Names Get Info

Fully-Specified Name: Diameter.biparietal.mean:Len:Pt:Head^Fetus:Qn:Estimated from gestational age
Long Common Name: Fetal Head Mean biparietal diameter Estimated from gestational age
Short Name: Fet BPD.mean Est from GA

Part Model Get Info

Component
Diameter.biparietal.mean
LP64603-1
- Analyte
  Diameter.biparietal.mean
  LP64603-1
  - Component Numerator
    Diameter.biparietal.mean
    LP64603-1
    - Component Numerator Core
      Diameter.biparietal.mean
      LP64603-1
    - Component Numerator Core Suffix
      NULL
  - Component Denominator
    NULL
    - Component Denominator Core
      NULL
    - Component Denominator Core Suffix
      NULL
- Challenge
  NULL
- Adjustment
  NULL
- Count
  NULL
Property
Len
LP6822-3
Time
Pt
LP6960-1
- Time Core
  Pt
  LP6960-1
- Time Modifier
  NULL
System
Head^fetus
LP30023-3
- System Core
  Head
  LP7281-1
- Super System
  Fetus
  LP6982-5
Scale
Qn
LP7753-9
Method
Estimated from gestational age
LP6262-2

Basic Attributes

Class: OB.US
Type: Clinical
First Released: Version 1.0j-a
Last Updated: Version 2.48 (MAJ)
Order vs. Observation: Observation

Formula (Readable)

DIAMETER.BIPARIETAL [cm] = -3.08 + 0.41 * (gestational age [wk]) - 0.000061 * (gestational age [wk]) ^ 3

Language Variants Get Info

Tag	Language	Translation
el-GR	Greek (Greece)	Διάμετρος.αμφιβρεγματική.μέση τιμή:Len:Pt:Κεφαλή^Έμβρυο:Qn:Εκτιμώμενο βάσει ηλικίας κύησης Synonyms: Len OB.US Pt Qn Διάμετρος Διάμετρος.αμφιβρεγματική Διάμετρος.αμφιβρεγματική.μέση τιμή Εκτιμώμενο Εκτιμώμενο βάσει ηλικίας κύησης Έμβρυο Κεφαλή
es-AR	Spanish (Argentina)	diámetro.biparietal.medio:longitud:punto en el tiempo:cabeza^feto:cuantitativo:calculado a partir de la edad gestacional
es-MX	Spanish (Mexico)	Diámetro.biparietal.medio:Len:Punto temporal:Cabeza ^ feto:Cuantitativo:Estimated from gestational age
fr-BE	French (Belgium)	Diamètre.bipariétal. Moyen:Longueur:Temps ponctuel:Tête^Foetus:Quantitatif:Age gestationnel estimé Synonyms: BPD BPD . Moyen
it-IT	Italian (Italy)	Diametro.biparietale.media:Len:Pt:Testa^feto:Qn:Stimato in base a età gestazionale Synonyms: Ecografia ostetrica Lunghezza Punto nel tempo (episodio)
pt-BR	Portuguese (Brazil)	Diâmetro.biparietal.médio:Comprimento:Pt:Crânio^feto:Qn:Estimado pela idade gestacional Synonyms: ; BPD.mean; BPD; Diam; DIA; Length; Point in time; Random; Skull; Brain; Intracranial; Cranium; Cranial; Fet; Fetal; Quantitative; QNT; Quant; Quan; Est from GA; predicted; estimation; Gest; Gestation; Prenatal; Average; Avg; OBSTERICAL.ULTRASOUND; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; BPD by GA; BPD predicted from gestational age; Echoencephalogram; Echoencephalography
zh-CN	Chinese (China)	直径.二顶骨.平均值:长度:时间点:头部^胎儿:定量型:依据孕龄的胎龄估计法 Synonyms: BPD 平均值（均值）;BPD 平均值;二顶径均值;二顶径平均值;二顶骨直径均值;二顶骨直径平均值;双顶径均值;双顶径平均值;左右颅骨顶部直径均值;左右颅骨顶部直径平均值;平均 BPD;平均二顶径;平均二顶骨直径;平均双顶径;平均左右颅骨顶部直径;平均胎头双顶径;直径.二顶.平均值;直径.二顶的.平均值;直径.二顶骨的.平均值;直径.左右颅顶骨.平均值;直径.左右颅顶骨的.平均值;直径.顶骨宽.平均值;直径.顶骨宽的.平均值;胎儿双顶径均值;胎儿双顶径平均值;胎儿平均双顶径;胎头双顶径均值;胎头双顶径平均 BPD;二顶径;二顶径（Biparietal diameter，BPD，双顶径）;二顶骨直径;双顶径;左右颅骨顶部直径;直径.二顶;直径.二顶的;直径.二顶骨的;直径.左右颅顶骨;直径.左右颅顶骨的;直径.顶骨宽;直径.顶骨宽的;胎儿双顶径;胎头双顶径一种超声检查，用于确定几个脑部结构的位置和大小，从而系统地检查脑部和脊髓可疑的软组织疾病。产科产科.超声;产科.超声.印象与测量指标;产科学.超声;产科学.超声.印象与测量指标;产科学检查与测量指标.超声.印象与测量指标;产科学超声印象与测量指标产科学受孕受孕期受孕期的受孕的可用数量表示的;定量性;数值型;数量型;连续数值型标尺大脑;头;头壳;头的;头盖;头盖的;头盖骨;头部的;头颅;头颅内;头颅内的;头骨;脑;脑壳;脑的;颅;颅侧;颅的;颅骨;颅骨内;颅骨内的头^胎儿头部超声检查方法头部超声波头部超声波检查方法妊娠妊娠期的妊娠的怀卵怀卵期怀卵期的怀卵的怀孕怀孕期怀孕期的怀孕的时刻;随机;随意;瞬间胎;超系统 - 胎儿胎龄估计法;孕龄估计法脑回波图脑回波描记仪脑回波描记仪术长;长短

Example Units

Unit	Source
mm	Example UCUM Units

LOINC Terminology Service (API) using HL7^® FHIR^® Get Info

CodeSystem lookup: https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=11821-6

LOINC Copyright

Copyright © Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 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.