ABSTRACT
Positioning for postero-anterior chest projection. https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315382210/8ca82e7c-bd07-4171-b4f5-ebaded57b5b3/content/fig2_14a.jpg" xmlns:xlink="https://www.w3.org/1999/xlink"/>
A vertical Bucky DDR system is employed, or alternatively a 35 cm × 43 cm or 35 cm × 35 cm CR cassette is selected depending on the patient’s size. Orientation of a larger cassette will depend on the width of the thorax.
Careful patient preparation is essential, with all radio-opaque objects removed before the examination.
The patient is positioned facing the receptor, with the chin extended and centred on the middle of the top of the receptor.
The feet are placed slightly apart so that the patient is able to remain steady.
The median sagittal plane is adjusted at right angles to the middle of the receptor; the shoulders are rotated forwards and pressed downwards in contact with the receptor or vertical stand.
This is achieved by placing the dorsal aspect of the hands behind and below the hips, with the elbows brought forward or by allowing the arms to encircle the vertical Bucky device.
