Three relatively recent imaging techniques, computed tomography (CT), ultrasound (US), and magnetic resonance imaging (MRI), have greatly improved thoracic imaging. In all conventional x-ray techniques, the x-ray beam passes through the patient, superimposing all structures in its path onto an x-ray film or detector (projection image, two-dimensional image). Cross-sectional scanning techniques “slice” the patient open, providing a look “inside,” eliminating superimposition. These images are the product of individual digital readings, from multiple angles, synthesized into a digital image. The digital data can be processed to improve tissue contrast and brightness or to view the anatomy in various planes and in three dimensions.
![](https://i0.wp.com/thoracickey.com/wp-content/uploads/2019/11/f002-001a-9781455774838.jpg?w=960)
![](https://i0.wp.com/thoracickey.com/wp-content/uploads/2019/11/f002-001b-9781455774838.jpg?w=960)
![](https://i0.wp.com/thoracickey.com/wp-content/uploads/2019/11/f002-002-9781455774838.jpg?w=960)
![](https://i0.wp.com/thoracickey.com/wp-content/uploads/2019/11/f002-005-9781455774838.jpg?w=960)
![](https://i0.wp.com/thoracickey.com/wp-content/uploads/2019/11/f002-006a-9781455774838.jpg?w=960)
![](https://i0.wp.com/thoracickey.com/wp-content/uploads/2019/11/f002-006b-9781455774838.jpg?w=960)
![](https://i0.wp.com/thoracickey.com/wp-content/uploads/2019/11/f002-006c-9781455774838.jpg?w=960)
![](https://i0.wp.com/thoracickey.com/wp-content/uploads/2019/11/f002-008a-9781455774838.jpg?w=960)
![](https://i0.wp.com/thoracickey.com/wp-content/uploads/2019/11/f002-008b-9781455774838.jpg?w=960)
![](https://i0.wp.com/thoracickey.com/wp-content/uploads/2019/11/f002-008c-9781455774838.jpg?w=960)
![](https://i0.wp.com/thoracickey.com/wp-content/uploads/2019/11/f002-009b-9781455774838.jpg?w=960)
Courtesy of Dr. Andrew Taylor, Medical College of Wisconsin, Milwaukee.
![](https://freepngimg.com/download/social_media/63059-media-icons-telegram-twitter-blog-computer-social.png)
Stay updated, free articles. Join our Telegram channel
![](https://clinicalpub.com/wp-content/uploads/2023/09/256.png)
Full access? Get Clinical Tree
![](https://videdental.com/wp-content/uploads/2023/09/appstore.png)
![](https://videdental.com/wp-content/uploads/2023/09/google-play.png)
![](https://clinicalpub.com/wp-content/uploads/2023/09/banner1.png)