ICU Chest Films

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X-Ray Technique Quiz Answers

1. Which of the following statements is true?
Most ICU chest radiographs demonstrate significant findings.
In fact, up to 65% of ICU chest radiographs may reveal a significant or unsuspected finding.

2. On which one or more of the following patients do daily portable radiographs need to be taken?
Intubated 51 year old male suffering from COPD and 89 year old woman in the ICU for severe congestive heart failure.
Currently, the American College of Radiology (ACR) suggests that daily chest radiographs be obtained on patients with acute cardiopulmonary problems and those receiving mechanical ventilation. Otherwise, only initial chest radiographs are needed for the placement or change of indwelling lines or devices.

3. Click on the three areas of the chest where supine AP and erect PA radiographs most differ.

The heart size is significantly magnified in AP films, and the clavicles are also magnified. Furthermore, the sternum is magnified in the AP film, and because the patient is supine the pulmonary vasculaturity is more prominent.

4. Ambient room light can reduce the detectability of lesions on chest radiographs.
True
Always remember to turn off lights not being used and lower room lights if possible. Stray lights and glare may diminish your ability to see subtle variations in density.

5. Supine positioning of the patient affects which one(s) of the following?
Cephalization of the pulmonary vasculature, The appearance of a pneumothorax, and Widens mediastinum