Version 2.77

Term Description

Derived from measures of occipital-frontal diameter and transaxial diameter assuming shape is an ellipse. The outer to outer transaxial diameter is used. This estimate should be closer to that measured with ellipse overlay or by tracing.
Source: Regenstrief LOINC

Part Description

LP70910-2   Perimeter
Perimeter is the measurement of any boundary. Measurements of the area and perimeter of fetal cross-sections have been found to establish both an accurate estimation of birthweight and an early diagnosis and differentiation of the various types of abnormal fetal growth patterns. For example, abdominal perimeter measurements are an effective predictor of discordant twins where the weight difference between the two exceeds 15%.
PMID: 103914 PMID: 3309749 Source: Regenstrief LOINC

Reference Information

Type Source Reference
Article NCBI PubMed Hadlock FP, Kent WR, Loyd JL, Harrist RB, Deter RL, Park SK. An evaluation of two methods for measuring fetal head and body circumferences. J Ultrasound Med. 1982;1:359-360. Link to PubMed
Citation Regenstrief Institute Silva et al 1991.6. Table

Fully-Specified Name

Component
Perimeter
Property
Len
Time
Pt
System
Head^Fetus
Scale
Qn
Method
US.derived from OFD&O-O TD

Additional Names

Short Name
Fet Head Circum by OFD+O-O TD

Basic Attributes

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

Language Variants Get Info

Tag Language Translation
es-AR Spanish (Argentina) ecografía.derivada del diámetro occipitofrontal y diámetro biparietal externo e interno:longitud:punto en el tiempo:cabeza^feto:cuantitativo:US.DERIVED FROM OFD&O-O TD
es-MX Spanish (Mexico) Perímetro:Len:Punto temporal:Cabeza ^ feto:Cuantitativo:US.derived from OFD&O-O TD
it-IT Italian (Italy) Perimetro:Len:Pt:Testa^feto:Qn:Ecografia.derivata da OFD&O-O TD
Synonyms: Eco Ecografia ostetrica Lunghezza Punto nel tempo (episodio)
pt-BR Portuguese (Brazil) Perímetro:Comprimento:Pt:Crânio^feto:Qn:US.obtido pelo diâmetro occípito-frontal e diâmetro torácico externo/externo
Synonyms: ; Circum; Circumference; Length; Point in time; Random; Skull; Brain; Intracranial; Cranium; Cranial; Fet; Fetal; Quantitative; QNT; Quant; Quan; by OFD+O-O TD; Occipital-Frontal Diameter & Outer to Outer head diameter; Occipital-Frontal Diameter & Outer to Outer Tympanum diameter; by OFD+O-O TD; der; Ultrasound; ULS; Sonogram; Sonography; Sonograph; Echography; OBSTERICAL.ULTRASOUND; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; HC; Head Circumference; Echoencephalogram; Echoencephalography
zh-CN Chinese (China) 周长:长度:时间点:头部^胎儿:定量型:超声.依据枕额径与由外至外的胸径的导出法
Synonyms: OFD O-O TD TD 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 产科学超声.依据枕额径与由外至外的胸径的导出法;产科学超声.依据OFD&O-O TD的导出法;产科学超声.依据OFD+O-O TD的导出法;产科学超声.依据枕额径&由外至外的胸径的导出法;产科学超声.依据枕额径+由外至外的胸径的导出法 产科学超声.导出法;产科学超声.推导法;产科学超声.派生法;产科学超声.衍生法 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 外外鼓膜直径 外至外鼓膜直径 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 头部前后径 头部超声检查方法 头部超声波 头部超声波检查方法 导出法;推导法;推论法;衍生法 时刻;随机;随意;瞬间 枕额径（Occipital-Frontal Diameter，OFD） 枕骨－额骨直径 由外至外的鼓膜直径（Outer to Outer Tympanum Diameter，O-O TD） 胎;超系统 - 胎儿 脑回波图 脑回波描记仪 脑回波描记仪术 超声检查方法;超声检查法;超声波;超声波检查方法;超声波检查法 轴位横向直径 轴位横径 轴位横断直径（Transaxial Diameter，TD） 长;长短

Example Units

Unit Source
cm Example UCUM Units

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