Echocardiography

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ECHO/ DOPPLER

CARDIOGRAPHY

 A diagnostic Study that reveals information about:

The structure and function of the heart

Cardiac hemodynamics of the heart

THEORY AND TECHNIQUE OF

THE STUDY

 Utilizes the Application of Ultasonic waves being reflected back on hitting a structure

 This is done utilizing a transducer that both sends out the beam and then receives it back

 The transducer can have one crystal or multiple crystals

THEORY AND TECHNIQUE

CONT’D:

 Utilizing the technique of doppler with ultrasound allows the ability to quantitate the direction and velocity of objects

APPLICATION OF THE

TECHNIQUE:

 M mode echo

 2 DIMENSIONAL ECHO:

 Tran thoracic Echo- transducer directly on the chest wall

 Transesophageal Echo- probe placed into the esophagus and stomach

 Stress echocardiography- Tran thoracic echo at rest and post stress or exercise

APPLICATION OF THE

TECHNIQUE:

 Doppler can be viewed as:

 Continuous wave- continuous transmission of signal with 2 nd transducer available to receive the signal

 Pulsed Doppler- same probe transmits, waits an the receives

 Color flow- vectors directions given colors, usually blue if flow is away from transducer and red if goes toward the transducer.

THIS TECHNIQUE ALLOWS THE

EVALUATION OF:

Cardiac Chambers- size and motion or function

The thickness of the walls of the heart

Abnormal Objects in the heart: tumors or masses

Valvular structure (size and shape)

Valvular function (thickness, stenosis, or leakage)

Blood flow- hemodynamics

Other pathologies- fluid: pericardial effusion

THIS TECHNIQUE ALLOWS THE

EVALUATION OF:

Other objects- vegetations etc.

Mechanical valves

Pacemaker wires

ABNORMAL IMAGES

 LEFT VENTRICULAR FUNCTION

VALVULAR DISEASE

 AORTIC VALVE

MITRAL VALVE

CARDIOMYOPATHY

PACEMAKER WIRE

STRESS

ECHOCARDIOGRAPHY

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