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Chapter 11

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1. Phase contrast MR

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Figure 11-1

Phase contrast MR.

A. An axial phase contrast image at the level of the great vessels shows bright antegrade flow in the ascending aorta (A) and main pulmonary artery (P). B. During diastole there is a signal void in the pulmonary artery (arrow) because of retrograde flow in this patient with severe pulmonary insufficiency.

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2. Myocardial infarction

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Figure 11-2

Myocardial infarction.

A. There is markedly deficient myocardial enhancement at the apex of the left ventricle (arrow) on this first-pass MR perfusion image. B. A delayed image shows enhancement of the scar tissue at the apex (arrows) and appropriate washout from normal myocardial tissue elsewhere. Infarction in this patient occurred 3 years earlier during mitral valve surgery.

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3. Ventricular septal defect

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Figure 11-3

Ventricular septal defect.

An anteroposterior chest radiograph of a 3-week-old infant with a large VSD demonstrates cardiomegaly and marked pulmonary vascular prominence. The pulmonary vessels are somewhat indistinct because of superimposed edema.

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4. Perimembranous ventricular septal defect

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Figure 11-4

Perimembranous ventricular septal defect.

A, B. Anteroposterior and lateral radiographs of a 4-week-old infant show cardiomegaly, pulmonary vascular prominence, mild interstitial pulmonary edema, and hyperinflation.

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5. Ventricular septal defect

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Figure 11-5

Ventricular septal defect.

An anteroposterior chest radiograph demonstrates mild cardiomegaly, pulmonary vascular prominence, and enlargement of the main pulmonary artery (arrow). Prominence of the left atrium (LA) results in soft-tissue density fullness in the mid-upper portion of the cardiac silhouette and slight elevation of the left main bronchus.

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6. Ventricular septal defect and pulmonary hypertension

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Figure 11-6

Ventricular septal defect and pulmonary hypertension.

A chest radiograph of an adolescent girl with a large untreated VSD shows marked central pulmonary vascular prominence and rapid peripheral tapering. There is marked enlargement of the main pulmonary artery. Cardiomegaly is mild.

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7. Ventricular septal defect

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Figure 11-7

Ventricular septal defect.

An angled left anterior oblique view of a left ventriculogram shows left-to-right shunting of contrast-opacified blood through a membranous VSD (arrow).

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8. Ventricular septal defect

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Figure 11-8

Ventricular septal defect.

A 4-chamber cardiac MRI image of a 2-month-old infant shows a large perimembranous VSD (arrow...

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