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Part Description

LP229997-4   Phase.mean
Phase analysis of the timing of myocardial contraction is used in nuclear cardiology to quantify regional ventricular wall motion and evaluate certain conditions, including bundle branch block, ventricular pacing, and pre-excitation syndromes. Phase and amplitude together are used to classify wall motion, which is also a measure of cardiac dyssynchrony.
The phase value is defined as the amount of shift in the sine or cosine curve (measured in degrees) using the fundamental frequency of the Fourier fitting, and all of the individual phase values are used together to create a phase histogram in order to see the distribution pattern of phase values. Separate histograms are created for the rest and stress portions of the study.
Multiple parameters are calculated from the histogram:
1. Phase maximum (degrees);
2. Phase mean (degrees);
3. Phase standard deviation (degrees);
4. Phase bandwidth, which is defined as 95% of the histogram width (degrees); and
5. Phase entropy, which is an index of disorder reported on a scale of 0-1 (0-100%), with 0 meaning complete order and 1 meaning complete disorder.
PMID: 26860109 Source: Regenstrief LOINC, PMID: 26860109

LOINC Names Get Info

Fully-Specified Name
Phase.mean^resting:Angle:Pt:Heart.ventricle.left:Qn:NM.SPECT
Long Common Name
Mean phase [Angle] Left ventricle SPECT --resting
Short Name
Mean phase Resting Angle LV SPECT

Part Model Get Info

  • Component
    Phase.mean^resting
    LP304540-0
    • Analyte
      Phase.mean
      LP229997-4
      • Component Numerator
        Phase.mean
        LP229997-4
        • Component Numerator Core
          Phase.mean
          LP229997-4
        • Component Numerator Core Suffix
          NULL
           
      • Component Denominator
        NULL
         
        • Component Denominator Core
          NULL
           
        • Component Denominator Core Suffix
          NULL
           
    • Challenge
      resting
      LP35608-6
    • Adjustment
      NULL
       
    • Count
      NULL
       
  • Property
    Angle
    LP6778-7
  • Time
    Pt
    LP6960-1
  • System
    Heart.ventricle.left
    LP7310-8
    • System Core
      Heart.ventricle.left
      LP7310-8
    • Super System
      NULL
       
  • Scale
    Qn
    LP7753-9
  • Method
    NM.SPECT
    LP208656-1

Basic Attributes

Class
CARD.PROC
Type
Clinical
First Released
Version 2.58
Last Updated
Version 2.58 (ADD)
Order vs. Observation
Observation

Member of these Panels

LOINCLong Common Name
82654-5Cardiac nuclear imaging SPECT panel

Language Variants Get Info

TagLanguageTranslation
el-GRGreek (Greece)Φάση.μέση^σε ηρεμία:Γωνία:Pt:Καρδιά.κοιλία.αριστερή:Qn:NM.SPECT
Synonyms: CARD.PROC NM NM.SPECT Pt Qn Γωνία Καρδιά Καρδιά.κοιλία Καρδιά.κοιλία.αριστερή σε ηρεμία Φάση.μέση
es-MXSpanish (Mexico)Phase.mean ^ descansando:Ángulo:Punto temporal:Corazón.ventrículo.izquierdo:Cuantitativo:NM.SPECT
it-ITItalian (Italy)Fase.media^riposo:Angolo:Pt:Cuore.ventricolo.sinistro:Qn:NM.SPECT
Synonyms: Fase media Procedure cardiache Punto nel tempo (episodio) SPECT Ventricolo cardiaco Ventricolo cardiaco Sinistro
zh-CNChinese (China)相位.平均值^静息:角度:时间点:心脏.心室.左侧:定量型:NM.SPECT
Synonyms: L LT 休息;休息状态;静息状态 几何学角度;几何角度 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 向左 向左侧 左 左侧（Left，LT，L） 左向 左心室;心.室.左侧;心.心室.左侧;心脏.室.左侧 左边 心 心.室;心.心室;心室;心脏.室 心脏病学 时刻;随机;随意;瞬间 核医学方法;核医学设备;nuclear medicine 核医学方法;核医学设备;nuclear medicine;单光子发射计算机断层扫描;single photon emission computed tomography;SPECT;单光子发射计算机断层显像;单光子发射断层扫描;发射计算机断层术;放射性核素扫描;同位素发射计算机辅助断层显像;Emission Computed tomography;ECT 相位（时相、相、期、分期、时段）.平均值（均值、平均数）

Example Units

UnitSource
degExample UCUM Units

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

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=82635-4