Ultrasound B-scan, also refer as ultrasonography B-scan or B-scan, is a medical imaging technique that uses high-frequency sound waves to make real-time cross-sectional images of the body’s structures. It is a non-invasive technique commonly used to analyze different parts of the body such as the abdomen, eye, pelvis, and soft tissues. The “B” in B-scan is known for brightness, as the procedure shows the strength of the reflected ultrasound waves as a grayscale or brightness image. This allows the visualization of various tissue types and abnormalities within the body. During an ultrasound B-scan, a handheld transducer is placed on the skin texture and moved over the area of interest. The transducer radiates sound waves, which spike the tissues and bounce back when they encounter boundaries between multiple tissues or structures. These echoes are then seen by the transducer and converted into electrical signals, which are processed to make a clear visual representation on a monitor. B-scan images can deliver valuable details about the shape, size, and position of structures within the body. They are especially useful for evaluating conditions like cysts, tumors, fluid collections, and organ abnormalities. In ophthalmology, B-scan is commonly used to evaluate the posterior segment of the eye, especially when direct visualization is challenging because of elements like opaque media or limited access. Remember that ultrasound B-scan is just one modality of ultrasound imaging and has its own specific uses and limitations. Other ultrasound techniques like A-scan and Doppler ultrasound, are also employed in diverse clinical scenarios to collect additional details of tissue characteristics and blood flow.
Fluorescein is a yellow dye, which glows in visible light, it requires a special digital camera sensitive to these light rays This angiography helps your doctor make the correct diagnosis and plan the best course of treatment especially in diseases like age related macular degeneration (AMD).