We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byStuart Stone
Modified about 1 year ago
Restricted © Siemens AG 2013 All rights reserved.siemens.co.uk/education Topic 15: A peep inside Siemens Education
Restricted © Siemens AG 2013 All rights reserved. A peep inside Course requirements for GCSE Physics Students should: Develop knowledge and understanding of the relationship between the properties of electromagnetic waves and their uses Use scientific theories, models and evidence to develop hypotheses, arguments and explanations Develop and use models to explain systems, processes and abstract ideas
Restricted © Siemens AG 2013 All rights reserved. A peep inside Learning objective We are learning to: Explain how MRI scanners produce images Apply their understanding of waves and particles to this application Describe typical uses of MRI images
Restricted © Siemens AG 2013 All rights reserved. A peep inside How can a doctor make the best possible diagnosis?
Restricted © Siemens AG 2013 All rights reserved. A peep inside The importance of images There are various situations in which medical diagnosis will be assisted by detailed imaging, such as broken bones, tumours, etc and the pros and cons of various imaging technologies, such as ultrasound, CT scans, X-rays and MRI scans, need to be considered X-rays are often used for the imaging of hard material such as bones Ultrasound is quick and easy but gives lower resolution images CT scans are high quality but only work in one plane, whereas MRI scans can work in any plane, producing high quality images of the inside of the body from the desired perspective CT and X-ray imaging uses ionising radiation
Restricted © Siemens AG 2013 All rights reserved. A peep inside CT Scan Ultrasound Scan MRI Scan X-ray image
Restricted © Siemens AG 2013 All rights reserved. A peep inside A carbon atom A hydrogen atom Atomic structure
Restricted © Siemens AG 2013 All rights reserved. A peep inside What does an MRI scanner consist of? There are four key components: 1)A powerful permanent magnet 2)Gradient coils, which produce a variable magnetic field 3)Radio frequency (RF) coils, which produce radio waves 4)Scanner, which detects energy emitted from the body
Restricted © Siemens AG 2013 All rights reserved. A peep inside How does MRI work? (1) Although there are many different elements in the body, hydrogen is very common. It is present in water and in fats. Hydrogen nuclei are the key to the production of MRI scans. Normally, these nuclei spin in random directions around their individual magnetic fields.
Restricted © Siemens AG 2013 All rights reserved. A peep inside How does MRI work? (2) The MRI scanner has a powerful magnet, which produces a magnetic field, many times stronger than that of the Earth. In this magnetic field the nuclei line up either north or south. About half go each way, but there are a few unmatched ones.
Restricted © Siemens AG 2013 All rights reserved. A peep inside How does MRI work? (3) When radio waves are produced by the RF coils, the unmatched nuclei spin the other way. The gradient magnets alter the magnetic field so that images can be produced from any direction.
Restricted © Siemens AG 2013 All rights reserved. A peep inside How does MRI work? (4) When the radio frequency coils are switched off and the pulse of RF waves stops, the extra nuclei return to their normal position, emitting energy.
Restricted © Siemens AG 2013 All rights reserved. A peep inside How does MRI work? (5) The energy released by these nuclei is detected by the scanner, which sends a signal to the computer, which converts it to an image.
Restricted © Siemens AG 2013 All rights reserved. A peep inside What advantages does MRI offer? It can work in any plane: think of the different directions one could slice an apple in. Each slice is a two dimensional view; this is what the images are like. Being able to select the plane offers medical staff real advantages The images have a very high resolution: the detail is good and it can discriminate between matter that is similar There are no known biological hazards with MRI: it doesn’t use ionising radiation
Restricted © Siemens AG 2013 All rights reserved. A peep inside What are the drawbacks? Noise: continuous hammering around Patient has to be still for anything up to 90 minutes: movement causes blurring and requires a repeat scan Expensive: complex equipment which needs skilled operation and takes time to scan Claustrophobic: some patients find it unpleasant Dangerous: magnetic materials can be caused to fly across the room
Restricted © Siemens AG 2013 All rights reserved. A peep inside Typical diagnostic application: slipped disc
Restricted © Siemens AG 2013 All rights reserved. A peep inside Typical diagnostic application: slipped disc Nerves in this area are compromised from the pressure of the prolapsed disc
Restricted © Siemens AG 2013 All rights reserved. A peep inside Typical diagnostic application: sprained wrist (if compressed gives pain, swelling and restriction of movement) (Tendons of the wrist) (Nerve and artery of the ulna bone run through here to the hand) (One of the bones in the wrist)
Restricted © Siemens AG 2013 All rights reserved. A peep inside Sample assessment task This diagram shows a simplified cutaway view of an MRI scanner Explain how it produces images for clinical diagnosis (6)
Restricted © Siemens AG 2015 All rights reserved.siemens.co.uk/education Lesson Plan MRI Scan Experience Siemens Education.
This depends on a property of nuclei called spin. Gyroscope: Principle: As long as its disc remains spinning rapidly the direction of the spin axis.
MAGNETIC RESONANCE IMAGING by PRADEEP V.EPAKAYAL. Mem.no L.
MAGENETIC RESONANCE IMAGINING T2, T5, T7. History Discovered in the 1930’s Originally used in spectroscopy Was the topic of research for a noble prize.
Magnetic Resonance Imaging MRI. Magnetic Resonance Imaging MRI uses the interaction between the magnetic properties of hydrogen nuclei, external magnetic.
Magnetic Resonance Imaging Magnetic resonance started out as a tomographic imaging modality for producing NMR images of a slice through the human body.
November 19 th, Diagnostic Testing Diagnostic tests provide information about the structure and function of organs, tissues, and cells. Medical.
The importance of MRI, a few numbers MRI units worldwide in 2003 75 millions scans per year performed Constant need for over 1000 MRI technologists.
The Professional Development Service for Teachers is funded by the Department of Education and Science under the National Development Plan This unit explores.
MRI Magnetic Resonance Imaging. Definition A non-ionizing technique with full three dimensional capabilities, excellent soft-tissue contrast, and high.
Date: 10/30/13 Magnetic Resonance Imaging By: Lillian Xue and Stephanie Ganzeveld.
MRI scan 朱书豪 | 制作 吴炜敏 | 材料收集 赵朋 | 演讲 1. MRI What is an MRI scan? How does an MRI scanner work? What does an MRI scan show? How does an MRI scan.
1 Introduction to Magnetic Resonance Imaging درس مقدمه ای بر فیزیک پزشکی Sahand University of Technology Faculty of Electrical Engineering M. Shamsi.
Introducing cross- sectional imaging Dr.Ahmed S. Tawfeek FIBMS(Rad.)
Medical Physics. X-rays Diagnostic methods in medicine Ultrasound Medical Physics.
3/13/2009IB Physics HL 21 Ultrasound Medical Imaging Physics – IB Objectives I.2.7Describe the principles of the generation and the detection of ultrasound.
Magnetic Resonance Imaging & Positron Emission Tomography AUBREY OVERSON.
1. Gel electrophoresis separates DNA fragments based on their __________. 2. True or false, larger DNA fragments move faster because the larger pieces.
Chemistry and Imaging. Body Chemistry In order to be an effective health care professional, an individual must have an understanding of basic chemistry.
DETECTING LUNG AND BREAST CANCER BY RAVEN, JENAYA, SHARIA, ISAAC AND AMAN.
Medical Imaging G485 Fields, Particles, Frontiers of Physics Medical Imaging G485 Fields, Particles, Frontiers of Physics Mr Powell 2012 Index X-Rays.
Magnetic Resonance Imaging In The Diagnostic Field By, Kara Laliberte.
Medical Imaging Technologies Medical imaging produces images of organs and tissues within the body for use in diagnosis and treatment.
Medical Imaging X-rays CT scans MRIs Ultrasounds PET scans.
Magnetism & MRI (difference between magnetic & MRI ) Biophysics (PHR 177) Prof. Dr. Moustafa. M. Mohamed Vice Dean Dr. Eng. Safa Ahmed El-Askary Faculty.
Role of Imaging in diagnosis A Vohrah. First time it has been run entirely by radiology Hope we don’t have too many hiccups Explain the role of imaging.
Restricted © Siemens AG 2015siemens.co.uk/curiosity-project Medical magnets The Curiosity Project.
1 Chapter 1 Section 1 Notes NatureOfScience. 2 What is Science? A way or process used to investigate what is happening around you. Not New Early.
Diagnostic Testing Diagnostic tests provide information about the structure and function of organs, tissues, and cells. Medical imaging produces images.
Magnetic Resonance Imaging Dr Mohamed El Safwany, MD.
Medical Resonance Imaging MRI. First medical images: X-rays Discovered in 1895 Images of bones What part of the body is this?
Electromagnets October 16 th, What is an electromagnet? An electromagnet is a magnet that is made using electricity They are very useful as they.
Advanced Biomedical Imaging Dr. Azza Helal A. Prof. of Medical Physics Faculty of Medicine Alexandria University.
Magnetic Resonance Imaging Astounding. The MRI magnet and patient table The operator’s console.
Magnetic Material Engineering. Chapter 6: Applications in Medical and Biology Magnetic Material Engineering.
In The Name of Allah The Most Beneficent The Most Merciful.
L 36 Modern Physics  How lasers work Medical applications of lasers Applications of high power lasers Medical imaging techniques CAT scans MRI’s.
Fysisk institutt - Rikshospitalet 1 Source: Courtesy of Warner Bros Science or black magic? Chap.12 (3) Medical imaging systems: MRI.
Magnetic Resonance Imaging By Dr. Amr A. Abd-Elghany.
Magnetic Resonance Imaging Basic principles of MRI This lecture was taken from “Simply Physics” Click here to link to this site.
Magnetic Resonance Imaging Topic 3 (MRI ) ANDRE CAJES B. RRT Clinical Instructor.
Magnetic Resonance Imaging (MRI). The Components: A magnet which produces a very powerful uniform magnetic field. A magnet which produces a very powerful.
Methodology PET and MRI scanning How do we investigate the brain?
Buxton & District Science Discussion Medical Scanners Marge Rose 16 th November 2012.
By Idil Gulec and Roos Kraaijveld 9F Magnetic Resonance Imaging.
Take Up. Arthroscopes are a surgical tool that allow surgeons to literally see within a patient’s joints without having to surgically open the patient.
Diagnosis and Medical Imaging Technology SNC2D. Diagnosis The interdependence of our organ systems can sometimes make it difficult to pinpoint the source.
© 2017 SlidePlayer.com Inc. All rights reserved.