Version 2.78

Term Description

A measure of the attenuation of the ultrasound signal (loss of energy) as it travels through and returns from the liver at 3.5 MHz, often reported simultaneously with liver stiffness [LOINC:77615-3]. Based on the principle that ultrasound propagation is affected by tissue fat content, the ultrasound attenuation measurement, referred to as Controlled Attenuation Parameter (CAP), is a measure of liver fat content (steatosis) and expressed in dB/m. Increasing steatosis is associated with higher levels of signal attenuation. PMID: 22404722
Source: Regenstrief LOINC

Fully-Specified Name

Component
Ultrasound attenuation
Property
Pres
Time
Pt
System
Liver
Scale
Qn
Method
US.transient elastography

Additional Names

Short Name
US.TE Liver attenuation

Basic Attributes

Class
RAD
Type
Clinical
First Released
Version 2.56
Last Updated
Version 2.66
Order vs. Observation
Both

Language Variants Get Info

Tag Language Translation
es-MX Spanish (Mexico) Atenuación de ultrasonido:Pres:Punto temporal:Hígado:Cuantitativo:US.transient elastography
it-IT Italian (Italy) Attenuazione ultrasuoni:Pres:Pt:Fegato:Qn:Ecografia.elastografia transitoria
Synonyms: Eco Pressione Punto nel tempo (episodio) Radiologia
zh-CN Chinese (China) 超声衰减:压力或压强:时间点:肝脏:定量型:超声.瞬时弹性成像
Synonyms: 压力;压强 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 成像;放射医学;放射学;显像 时刻;随机;随意;瞬间 肝 超声（超声波、超声振幅、超声幅度、超声能量）衰减（衰减值、减弱） 超声.瞬时弹性成像术;超声.瞬时弹性成像法;超声.瞬时弹性成像技术 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

Example Units

Unit Source
dB 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=81894-8