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Small Animal Radiology and Ultrasound: A Diagnostic Atlas and Text

Small Animal Radiology and Ultrasound: A Diagnostic Atlas and Text

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60 <strong>Small</strong> <strong>Animal</strong> Radiolo g y <strong>and</strong> Ultrasono graphy<br />

Fig. 2-33 Diagrammatic demonstrations of the views <strong>and</strong><br />

placement of sample volumes for Doppler echocardiographic<br />

studies of the mitral valve (A), left atrial flow (B),<br />

tricuspid valve flow (C), right atrial flow (D), aortic valve<br />

flow (E), left ventricular outflow tract flow (F), pulmonary<br />

valve flow (G), <strong>and</strong> right ventricular outflow tract flow (H).<br />

LA, Left atrium; LV, left ventricle; RA, right atrium; RV, right<br />

ventricle; RVO, right ventricular outflow tract; TV, tricuspid<br />

valve; PA, pulmonary artery; AS, atrial septum. (From<br />

Kirberger RM, Bl<strong>and</strong>-van den Berg P, Darazs B: Doppler<br />

echocardiography in the normal dog: part I, velocity findings<br />

<strong>and</strong> flow patterns. Vet Radiol 1992; 33:372.)<br />

A<br />

C<br />

B<br />

D<br />

E<br />

F<br />

G<br />

H<br />

Fig. 2-34 A pulsed wave Doppler study of the mitral valve made from the left parasternal long-axis<br />

view reveals normal E <strong>and</strong> A deflections. The maximal velocity is 0.85 meter per second. Diagnosis:<br />

Normal study.

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