WordNet

Austrian physicist famous for his discovery of the Doppler effect (1803-1853) (同)Christian Johann Doppler
a noninvasive diagnostic procedure that uses ultrasound to study to structure and motions of the heart
a sonograph that creates an image of the heart and its abnormalities

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2013/02/20 18:02:29」(JST)

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Doppler echocardiography is a procedure which uses ultrasound technology which can examine the heart or blood vessels.^[1] An echocardiogram uses high frequency sound waves to create an image of the heart while the use of Doppler technology allows determination the speed and direction of blood flow by utilizing the Doppler effect.

An echocardiogram can, within certain limits, produce accurate assessment of the direction of blood flow and the velocity of blood and cardiac tissue at any arbitrary point using the Doppler effect. One of the limitations is that the ultrasound beam should be as parallel to the blood flow as possible. Velocity measurements allow assessment of cardiac valve areas and function, any abnormal communications between the left and right side of the heart, any leaking of blood through the valves (valvular regurgitation), calculation of the cardiac output and calculation of E/A ratio^[2] (a measure of diastolic dysfunction). Contrast-enhanced ultrasound using gas-filled microbubble contrast media can be used to improve velocity or other flow-related medical measurements.

An advantage of Doppler echocardiography is that it can be used to measure blood flow within the heart without invasive procedures such as cardiac catheterisation. For example, left ventricular filling pressure can be estimated by Doppler ultrasound, although only under certain conditions.^[3]

Although "Doppler" has become synonymous with "velocity measurement" in medical imaging, in many cases it is not the frequency shift (Doppler shift) of the received signal that is measured, but the phase shift (when the received signal arrives).

This procedure is frequently used to examine children's hearts for heart disease because there is no age or size requirement.

References

^ Doppler+Echocardiography at the US National Library of Medicine Medical Subject Headings (MeSH)
^ [1] Abdul Latif Mohamed, Jun Yong, Jamil Masiyati, Lee Lim, Sze Chec Tee. The Prevalence Of Diastolic Dysfunction In Patients With Hypertension Referred For Echocardiographic Assessment of Left Ventricular Function. Malaysian Journal of Medical Sciences, Vol. 11, No. 1, January 2004, pp. 66-74
^ Ommen, S. R.; Nishimura, R. A.; Appleton, C. P.; Miller, F. A.; Oh, J. K.; Redfield, M. M.; Tajik, A. J. (10 October). "Clinical Utility of Doppler Echocardiography and Tissue Doppler Imaging in the Estimation of Left Ventricular Filling Pressures : A Comparative Simultaneous Doppler-Catheterization Study". Circulation. Circulation. pp. 1788–1794. doi:10.1161/01.CIR.102.15.1788. http://circ.ahajournals.org/content/102/15/1788.short. Retrieved 12 July 2012.

External links

Echocardiography Textbook by Bonita Anderson
Echocardiography (Ultrasound of the heart)
Doppler Examination - Introduction
The Doppler Principle and the Study of Cardiac Flows

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UpToDate Contents

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1. ドップラー心エコーの原理 principles of doppler echocardiography
2. 組織ドップラー心エコー tissue doppler echocardiography
3. 胎児サーベイランスのための臍動脈ドップラー超音波検査 doppler ultrasound of the umbilical artery for fetal surveillance
4. 駆出率が保たれた心不全の臨床症状および診断 clinical manifestations and diagnosis of heart failure with preserved ejection fraction
5. 頚動脈狭窄の評価 evaluation of carotid artery stenosis

English Journal

Regional ventricular performance and exercise training in children and young adults after repair of tetralogy of fallot: randomized controlled pilot study.

Duppen N1, Geerdink LM1, Kuipers IM1, Bossers SS1, Koopman LP1, van Dijk AP1, Roos-Hesselink JW1, De Korte CL1, Helbing WA2, Kapusta L1.
Circulation. Cardiovascular imaging.Circ Cardiovasc Imaging.2015 Apr;8(4). pii: e002006. doi: 10.1161/CIRCIMAGING.114.002006.
BACKGROUND: Public-health guidelines recommend patients with congenital heart disease to exercise. Studies have shown that patients with congenital heart disease can improve physical exercise capacity. The effect of training on regional ventricular performance has hardly been studied. We performed a
PMID 25784723

Echocardiographic evaluation of the right ventricle: a 2014 perspective.

Portnoy SG1, Rudski LG.
Current cardiology reports.Curr Cardiol Rep.2015 Apr;17(4):578. doi: 10.1007/s11886-015-0578-8.
The ability to properly evaluate the right ventricular size and function can have important consequences for clinical management and prognosis. Echocardiography is and will remain the leading method of right ventricle (RV) assessment due to its ease of use and wealth of diagnostic information provid
PMID 25725606

Constrictive pericarditis: old disease, new approaches.

Welch TD1, Oh JK.
Current cardiology reports.Curr Cardiol Rep.2015 Apr;17(4):576. doi: 10.1007/s11886-015-0576-x.
Constrictive pericarditis is a disorder of cardiac filling caused by an inelastic pericardium. This treatable cause of heart failure should be considered in all patients with unexplained right heart failure symptoms or signs, especially when the left ventricular ejection fraction is preserved. Diagn
PMID 25725605

Japanese Journal

IMAGES IN CARDIOVASCULAR MEDICINE : Combined Non-Invasive Doppler Echocardiography and Coronary Computed Tomography Lead to Diagnosis of Anomalous Left Coronary Artery From the Pulmonary Artery (ALCAPA) Syndrome

Takemoto Kazushi,Hirata Kumiko,Tanimoto Takashi [他]
Circulation journal : official journal of the Japanese Circulation Society 79(5), 1136-1138, 2015-05
NAID 40020437226

FOCUS REVIEWS ON IMAGING : Echocardiographic Assessment of the Cardiac Amyloidoses

Koyama Jun,Ikeda Shu-ichi,Ikeda Uichi
Circulation journal : official journal of the Japanese Circulation Society 79(4), 721-734, 2015-04
NAID 40020412177

CASE REPORT : Device sizing for transcatheter closure of ruptured sinus of Valsalva as per echocardiography color Doppler turbulent flow jet diameter

Ahmed Khurshid,Munawar Muhammad,Chakraborty Rabin [他]
Cardiovascular intervention and therapeutics 30(1), 92-96, 2015-01
NAID 40020374297

Related Pictures

★リンクテーブル★

リンク元	「ドプラ法」「Doppler ultrasonography」「Doppler心エコー」「ドプラ心エコー」「ドプラ心エコー法」
拡張検索	「color Doppler echocardiography」「pulsed Doppler echocardiography」「real-time two-dimensional Doppler echocardiography」「continuous wave Doppler echocardiography」
関連記事	「Doppler」