Barium swallow 2 Flashcards
How is a pharyngoesophageal evaluation usually performed?
Radiographs are taken in frontal (AP) and lateral projections.
What is the patient positioning for an antero-posterior or frontal projection?
Patient in supine position, centered midsagittal plane of the body to the midline of the vertical grid device, shoulders in the same horizontal plane.
Where should the image receptor (IR) be centered for an antero-posterior projection?
At the level of or just below the laryngeal prominence.
How should the mandible and hard palate be positioned in relation to the occiput?
Superimposed over the occiput.
Where should the central ray be directed for an antero-posterior projection?
Perpendicular to the laryngeal prominence.
What should the patient do during the x-ray exposure?
Swallow a mouthful of thick barium suspension (about 10-15 ml) and phonate with a high-pitched “e-e-e” sound or perform a modified valsalva maneuver to achieve adequate distention of the pharynx.
What is the collimation for an antero-posterior projection?
To the level of the external auditory meatus (EAM) to the jugular notch and 2.5 cm beyond the skin edges on the sides.
What is the positioning for a lateral projection?
Patient erect and in lateral position before the vertical grid device, coronal plane through or just anterior to the temporomandibular joints centered to the midline of the IR.
Where should the IR be centered for a lateral projection?
2.5 cm below the level of the EAMs.
What should the patient do during the x-ray exposure for a lateral projection?
Swallow a mouthful of thick barium suspension (about 10-15 ml) and phonate with a high-pitched “e-e-e” sound or perform a modified valsalva maneuver to achieve adequate distention of the pharynx.
What are the two basic projections performed for the evaluation of the whole oesophagus?
Right Postero-Anterior oblique (RAO).
Lateral
What is the image receptor size for a RAO projection?
35 × 43 cm lengthwise.
How should the top of the IR be positioned?
Raised 5 cm above the level of the shoulder.
Where should the thorax be centered?
To the centerline.
How should the patient be positioned for a RAO projection?
- Erect facing and in contact with the image receptor.
- Raise the left side 30-45˚ from the image receptor.
- Arms moved away from chest cavity with the left arm raised and holding the cup for barium
