CAMRT Radiography Practice Exam

What is the most reliable method for ensuring a true lateral view of the abdomen during imaging?

1. Aligning the central ray perpendicular to the IR

2. Positioning the patient in a recumbent posture

3. Using a immobilization device to hold the patient still

4. Confirming that the vertebrae appear straight

The correct answer is: Aligning the central ray perpendicular to the IR

Aligning the central ray perpendicular to the image receptor (IR) is crucial for obtaining a true lateral view of the abdomen. When the central ray is positioned perpendicular, it ensures that the projections captured are accurate and that there is minimal distortion of anatomical structures. This alignment allows for even distribution of the x-ray beam, which is essential for detailed imaging and accurate assessment of any abdominal conditions. While positioning the patient in a recumbent posture and using an immobilization device can aid in stabilizing the patient and reducing motion artifacts, they do not directly guarantee the accuracy of the lateral view. Patient positioning is important, but the alignment of the central ray is the primary factor that impacts the integrity of the image. Additionally, confirming that the vertebrae appear straight can be a secondary check for ensuring that the patient is positioned correctly. However, it does not replace the importance of proper central ray alignment in achieving the desired projection.