Study of digits (second through fifth)

PA Projection

1. Seat the patient at the end of the table; 
2. Lower limbs remote from the radiation;
3. Upper limb resting on the table;
4. Place the extended finger with the palmar surface down; 
5. Separate the digits slightly.

 Central ray perpendicular to the proximal interphalangeal joint.

Evaluation Criteria:

• No rotation of the digit;
• View the entire digit, including the metacarpophalangeal joint;
• Digit centered and aligned with the center of collimation;
• Not visualization the soft tissue of adjacent digits;
• Appropriate exposure values (visualization of the all bony trabeculation and soft tissue).

Lateral Projection

1. Seat the patient at the end of the table;
2. Lower limbs remote from the radiation;
3. Upper limb resting on the table and the digit in profile: 

                               Third to fifth digit makes the internal profile;
                               Second digit makes the outer profile.
 

Central ray perpendicular to the proximal interphalangeal joint.

Evaluation Criteria:

• Digit extended, aligned and centered with the center of collimation;
• Entire digit in lateral position (condyles should be overlapped);
• Visualization of the metacarpophalangeal joint;
• Not visualization the soft tissue of adjacent digits;
• Appropriate exposure values (visualization of the all bony trabeculation and soft tissue).