![]() ![]() Outcome of photoelectric is that, that photon stopped and that energy is deposited locally. Coherent scattering really only plays impact at really low energies. So, for Compton you’ll have some energy going forward and some energy being deposited.ĭominant Interactions: Photoelectric and Compton are the dominant interactions. The electron deposits its energy locally. The X-ray comes in, it’s scattered and an electron is scattered as well. Ĭompton Effect: Compton is somehow in between Coherent Scattering and the photoelectric effect. Those both deposit their energy relatively locally. Photoelectric Effect: The diagnostic X-ray comes in and then that X-ray is stopped locally and an electron and a characteristic lower energy photon are emitted. Not sign, except for interventions if in beamĬoherent Scattering: In a coherent scattering event you have a diagnostic X-ray come in and then the X-ray goes out with a different angle but the same energy. To conclude this post we provide a summary table so you have a study guide with all of the information just in one place.Įlectrons, characteristic x-rays Deposit Dose ![]() This can be achieved by using high Z materials as contrast agents and/or using lower energy x-rays where the photoelectric effect becomes more likely. In general, maximizing the contribution of photoelectric interactions will lead to the highest image contrast. The primary interactions dominating diagnostic x-ray imaging are the photoelectric effect and Compton Scattering. These regions attenuate or absorb the x-rays at a higher rate than other regions. The regions in an x-ray image with the most attenuation are typically shown as bright in an x-ray image. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |