Factors Affecting X-Ray Image Quality

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Factors affecting X-ray image quality Course instructor: Dr. Debjani Paul Submitted by: Rahul Singh (Roll no.143300002) Department of bioscience and bioengineering, IIT Bombay, Mumbai 1.Abstract 2.Introduction The era of diagnostic radiology began with serendipitous discovery of X-Rays by Sir Wilhelm Roentgen (1895). This revolutionary discovery resulted in the first Nobel Prize ever awarded in Physics (1901). The diagnostic use of X-rays was started before the dangers of ionizing radiation were recognized. However, still X-rays based imaging techniques are indispensible tool in the field of medical imaging. X-ray based diagnostics includes CT, radiography and fluoroscopy which works over same basic principle: an X-ray beam is passed throughout the body where rays are either absorbed or scattered by the internal structures, and remaining rays are passed to the detectors which may be a film or computer screen and finally images are processed. Radiography (a single image is recorded and evaluated later where mammography is a special case), Fluoroscopy (used for real-time monitoring contrasting agents may be used), CT (many X-ray images are recorded as detector scans the body of the subject and coordinated together by computer showing various sections called ‘slices’). 2.1. General image quality characteristics…show more content…
Radiographic image is the final product of imaging department and it passes through many steps before viewing. The X-ray image quality is the exactness of the representation of the patient’s anatomy. The most important characteristic of radiographic quality are: Spatial Resolution, Contrast Resolution, Noise and Artifacts. Spatial resolution (excellent in conventional radiography) is the ability to image small objects that have high subject contrast eg. Bone-soft tissue interface, breast calcifications, calcified lung
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