Posicionamento radiográfico veterinário do tórax

Summary

This veterinary radiography tutorial focuses on the proper positioning techniques for thoracic imaging of dogs and cats. Key topics include selecting the appropriate chassis size, using supports for stability, and achieving proper limb and head alignment for accurate X-rays. The video emphasizes the importance of capturing images during peak inspiration and avoiding unnecessary radiation exposure by removing accessories. The two standard projections for thoracic imaging are lateral-right and ventrodorsal, with additional projections recommended for cardiac evaluations. Proper positioning and attention to detail ensure high-quality radiographs and safe imaging for veterinary patients.

Takeaways

• 😀 Ensure the correct size of the chassis is used according to the animal's size (small, medium, large) for optimal radiographic positioning.
• 😀 Place non-slip materials between the table and the chassis to prevent accidents and ensure stability during the exam.
• 😀 For thoracic radiography, always use two projections: right lateral and ventrodorsal, to provide a clear and accurate image of the thorax.
• 😀 When evaluating cardiac conditions, a minimum of two projections is required, ensuring the heart silhouette is well-defined without distortions.
• 😀 Lateral projections can be adjusted based on the animal’s posture, keeping the thoracic limbs parallel and the head in a natural position.
• 😀 The thoracic region should be fully captured within the radiographic image, including the diaphragm and the entire thoracic cavity.
• 😀 Ensure the external line of the animal aligns parallel with the table to avoid rotation, especially when using lateral projections.
• 😀 During ventrodorsal projections, the animal's sternum and vertebral column must align with the center of the film for proper symmetry.
• 😀 When an animal cannot tolerate positioning for certain projections (like ventrodorsal), consider using the central position as an alternative.
• 😀 For accurate results, radiographs should always be taken at the peak of the animal’s inspiration to capture the fullest lung expansion.
• 😀 Avoid any unnecessary exposure to radiation by ensuring the positioning is correct and minimizing the need for retakes.

Q & A

What is the main focus of the video series mentioned in the transcript?

The video series primarily focuses on radiographic positioning techniques, particularly for veterinary radiography, starting with chest imaging.

What is the importance of selecting the right size of the chassis in radiography?

Choosing the correct chassis size based on the size of the animal (small, medium, or large) is crucial for accurate imaging and to prevent accidents during the procedure.

Why is it recommended to use non-slip materials under the chassis during a radiographic exam?

Non-slip materials help stabilize the chassis, preventing it from sliding on the table, which is especially important for more agitated animals to avoid film displacement or accidents.

What are the key elements to consider when positioning an animal for a thoracic radiograph?

Key factors include ensuring the whole thorax fits within the chassis, aligning the thoracic limbs parallel to the table, and positioning the head and neck at an appropriate angle to avoid distortion in the image.

What are the typical projection views used for a thoracic radiograph, and why are two views recommended?

The typical views are the right lateral projection and the dorsoventral projection. Two views are recommended to provide a more accurate assessment of the thorax, as they help avoid false positives, especially in cardiac evaluations.

When performing a thoracic radiograph, why is it important to align the sternum with the vertebral column?

Aligning the sternum with the vertebral column ensures that the thoracic organs are depicted symmetrically in the image, which is essential for accurate diagnosis and to avoid rotation errors in the radiograph.

What should be done if an animal is unable to maintain the required position for a thoracic radiograph due to pain or other factors?

In cases where an animal cannot be positioned properly, the use of a ventrodorsal (VD) view may be considered, or additional support devices such as foam pads may be used to help stabilize the animal during the exam.

Why is it important to capture the thorax at the peak of the animal’s inspiration?

Capturing the thorax at peak inspiration ensures that the lungs are fully expanded, which is essential for evaluating the lung fields and heart size accurately in the radiograph.

What specific factors should be monitored when positioning an animal for a right lateral chest radiograph?

When positioning for a right lateral chest radiograph, it is essential to ensure that the animal's limbs are parallel to the table, the head and neck are properly positioned, and the thorax is fully included within the chassis. The vertebral column should be parallel with the sternum, and the animal should be in maximum inspiration.

What are some challenges encountered when radiographing larger or more agitated animals, and how can they be overcome?

Larger or more agitated animals may require additional support to stabilize them during the procedure. Non-slip materials, foam pads, and the careful handling of the animal can help maintain the correct positioning and prevent movement that could distort the image.