A C-arm uses X-ray technology to produce real-time images of internal structures. Its distinctive "C" shape houses both the X-ray source (generator) and an image intensifier or flat-panel detector. This design allows for flexible positioning, enabling the capture of images from various angles.
Components and Function
- X-ray Source (Generator): This component emits X-rays, which pass through the patient's body.
- Image Intensifier/Flat-Panel Detector: This receives the X-rays that pass through the patient. The varying absorption of X-rays by different tissues creates a differential signal, which is then converted into an image. Modern systems increasingly utilize flat-panel detectors offering higher resolution.
- C-Shaped Arm: This connects the X-ray source and the detector, allowing for horizontal, vertical, and rotational movement. This flexibility is crucial for optimal image acquisition from various perspectives. The movement allows for precise positioning to capture the desired images.
- Fluoroscopy: The C-arm utilizes fluoroscopy, providing real-time X-ray imaging. This is essential for guiding procedures, such as surgeries, by offering continuous visualization of internal structures. This real-time imaging allows doctors to see the procedure's progress instantly.
- High-Frequency Light Waves: The system integrates high-frequency light waves to improve image resolution and clarity during the image capture process.
Applications
C-arms are commonly used in various medical procedures, including:
- Surgical Guidance: Real-time imaging facilitates precise placement of instruments during surgeries.
- Trauma Assessment: Quick imaging helps in diagnosing fractures and other injuries.
- Angiography: Visualization of blood vessels for diagnostic or interventional purposes.
The C-arm's ability to provide real-time 3D images, facilitated by its design and the use of fluoroscopy technology, makes it a valuable tool in modern healthcare.
