1. In conventional tomography, a fulcrum system is used to produce slices or sections of the patient's body. The fulcrum is a point around which the X-ray tube and the film or detector move during the imaging process. The fulcrum system allows the X-ray beam to be focused on a specific plane while blurring out structures that are not in that plane. This helps to reduce overlapping structures and improve the clarity of the final tomographic image.
2. The focal plane in tomographic imaging refers to the specific plane or level within the patient's body where the X-ray beam is focused. This is the plane where the structures of interest are captured with the highest level of detail. The focal plane is determined by the position of the fulcrum system and can be adjusted according to the specific area being imaged. By aligning the focal plane with the area of interest, tomographic images with improved resolution and sharpness can be obtained.
3. Blurring effect in tomographic imaging refers to the loss of sharpness and clarity in the final image. This occurs when structures outside the focal plane are not completely eliminated and contribute to the overall image. The blurring effect can be caused by factors such as patient movement, motion artifacts, or improper positioning of the fulcrum system. It can negatively impact the diagnostic quality of the image by reducing the ability to distinguish fine details and abnormalities.
4. Zonography is a type of tomographic imaging technique that focuses on a specific region or zone of interest within the patient's body. It allows for a detailed examination of a particular area while minimizing the exposure and radiation dose to the surrounding tissues. Zonography is particularly useful in cases where a single area requires detailed evaluation, such as joint imaging or the evaluation of a specific organ or structure.
5. In conventional tomography, the image detection system typically consists of a film or an image receptor, such as a digital detector, that is positioned opposite to the X-ray tube. The X-ray beam passes through the patient's body and interacts with the image receptor to create an image. In film-based systems, the X-ray photons expose the film, which is then developed to produce the final image. In digital systems, the X-ray photons are converted into electronic signals that are processed and reconstructed into a digital image. The image detection system plays a crucial role in capturing the X-ray information and producing the tomographic image.
6. CT scan image display quality refers to the visual appearance and clarity of the computed tomography (CT) images. CT scan images are typically displayed on a computer monitor or workstation, where radiologists and other healthcare professionals can analyze and interpret them. The display quality of CT images is important for accurate diagnosis and assessment of various conditions. It depends on factors such as the resolution of the monitor, the quality of image reconstruction algorithms, and the post-processing techniques applied to enhance image details. High display quality allows for better visualization of anatomical structures, abnormalities, and subtle changes, improving the overall diagnostic accuracy of CT scans.
