Radiodensity Research Paper

X-rays are used to guide tubes or cameras through the body. It is used to look at the heart, lungs, and chest walls. They can also be used to rule out any other conditions that might be causing the weaknesses.

Such as Imaging – absorbed by material such as bone, enabling images of the bone to be observed

Density is an important property of matter because every object has a unique number of density associated within it. It is how we find out out if an item will float or not and the compactness of an object.

Furthermore, X-ray of higher energy than required for imaging is used for radiation therapy. The radiation therapy makes use of ionization radiation (and no images) for the treatment of diseases, such as

Because of this, mammography x-ray tubes must be calibrated differently than normal x-ray tubes due to the small differences of linear attenuation coefficients between normal tissue and tumour, shown in Figure 1. Therefore, in order to maximize the diagnosis of abnormalities within the breast, it is essential that the contrast between tissue and tumour within the breast is as high as possible when produced on the x-ray film. One of the ways that this is done is through manipulation of the energy of the x-ray beam. In Figure 1, it can be seen that attenuation differences between fibroglandular and cancerous tissue are highest at very low energies: approximately 10keV to 15keV (Bushberg et al., 2002). Adversely, attenuation differences drop off rapidly at higher Figure 5: Contrast percentage between normal and cancerous tissues within the breast versus energy of the x-ray beam (Bushberg et al., 2002). Figure 5: Contrast percentage between normal and cancerous tissues within the breast versus energy of the x-ray beam (Bushberg et al., 2002). energies: approximately 35keV or greater (Bushberg et al., 2002). Thus, at lower energies, a higher contrast is displayed. Appropriate subject contrast

→ An X-ray is an imaging test that uses small amounts of radiation to produce pictures of the organs, tissues, and bones of the body. When focused on the chest, it helps to spot abnormalities or diseases in the lungs.

Density is how compact an object is. Density is the mass of the object divided by the volume. The higher the density the more weight and pressure the object can withstand. One example of this is with bulletproof glass. Bulletproof glass has a very high density, which make it withstand the impact of the bullet. Density is important to biomedical

In DXA the production of photons, based on the use of an X-ray tube (18), leads to shorter imaging times (less than 5 min) with enhanced resolution and improved accuracy than in DPA using a radionuclide source. Like DPA, this technique determines BMD in two dimen¬sions (from an anterior-posterior image). A DXA scanner consists of a mobile X-ray source, an examination table for the patient, and a de¬tection system that detects radiation emerging from the bones being examined. The X-ray source is under the examination table and moves together with the detection system, which is located opposite the X-ray source and over the patient’s body (18).

Density is a physical property of matter. Density can be used to distinguish a different substance

Duel-energy X-ray absorptiometry (DXA) utilises x-rays of two difference energies to produce an image of the region of interest. This image is projected and then used to calculate and determine

Magnetic resonance imaging (MRI) is a scan used for a medical imaging procedure. With the use of a magnetic field and radio waves, an MRI scan takes pictures of the inside of the patient’s body. An MRI scan is particularly useful when images of soft tissue such as organs and muscles that do not generally appear on x-ray examinations need to be collected. X-rays generally image calcium present in bones, so they are useful to image bones. MRI scans image water as opposed to other diagnostic tools including X-rays or CAT scans. Thus, this makes them useful because every tissue of the body has various amounts of water present. This allows high-resolution pictures of numerous amounts of organs and tissues to be produced particularly of areas that

As with any other radiographic method, optimum interpretable diagnostic images can only be achieved with careful quality assurance in patient positioning, in selecting appropriate exposure parameters and during processing.

Since then, X-rays have remained the primary technique used to locate embedded material in the body (Vogel & Dootz, 2007). However, X-rays do not provide information as to the biological condition of the tissue surrounding the embedded fragment (Fernandes et al., 2007; Helito et al., 2014). Extensive use of diagnostic X-rays can also lead to an increased risk of cancer later in life. Improvement in technology has decreased dose from plain film radiographs in comparison with decades past. This risk, albeit usually small, must be weighed against the benefit obtained from the information the X-rays

In nuclear medicine diagnosing techniques, a very small amount of radioactive material is introduced into the body. Because medical isotopes are attracted to specific organs, bones or tissues, the emissions they produce can provide crucial information about a particular type of cancer or disease. Information gathered during a nuclear medicine technique is more comprehensive than other imaging procedures because it describes organ function, not just structure. The result is that many diseases and cancers can be diagnosed much earlier.

The radiograph, one of the most common diagnostic imaging tools utilized in this field, possesses a very important component called contrast. Contrast helps radiologists perceive image detail and glean information from the area of interest. Radiation Technologists, or Rad-Techs, should always ensure that radiographs have the right amount of contrast so that the radiologist can easily read them for faster diagnosis.