LOINC
Version 2.72

33179-3Occipital frontal diameter estimated from gestational age by method of Chitty 1994 (US)Active

Fully-Specified Name

Component
Occipital frontal diameter
Property
Len
Time
Pt
System
Head^Fetus
Scale
Qn
Method
US.estimated from Chitty 1994

Additional Names

Short Name
OFD from GA.Chitty94

Basic Attributes

Class
OB.US
Type
Clinical
First Released
Version 2.09
Last Updated
Version 2.70
Order vs. Observation
Observation

Formula (Readable)

Estimated OFD = -41.58+5.50*MA-0.0009141*MA3; SD = 4.795-0.2283*MA+0.007089*MA2; Limits: 12-42 weeksOFD (mm) from 17-138

Reference Information

Type Source Reference
Article NCBI PubMed Chitty LS, Altman DG, Henderson A, Campbell S. Charts of fetal size: 2. Head measurements. Br J Obstet Gynaecol. 1994 Jan;101(1):35-43. Link to PubMed

Language Variants Get Info

zh-CNChinese (China)
枕额直径:长度:时间点:头部^胎儿:定量型:超声.依据Chitty的胎龄估计法.94
it-ITItalian (Italy)
Diametro frontale occipitale:Len:Pt:Testa^feto:Qn:Ecografia.stimata da Chitty 1994
pt-BRPortuguese (Brazil)
Diâmetro occípito-frontal:Comprimento:Pt:Crânio^feto:Qn:US.estimado pela tAcela de Chitty.94
es-ARSpanish (Argentina)
US.ESTIMATED FROM CHITTY.94:longitud:punto en el tiempo:cabeza^feto:cuantitativo:US.ESTIMATED FROM CHITTY.94
es-MXSpanish (Mexico)
Diámetro frontal occipital:Len:Punto temporal:Cabeza ^ feto:Cuantitativo:US.estimated from Chitty 1994

Example Units

Unit Source
mm Example UCUM Units

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=33179-3