688 Views Download Presentation. EECS 303 Lecture 1 * Outline Class administration Digital design methodology Representations of Digital Design Introduction to Mentor Graphics tools READING: Chapter 1 Chapter 2 EECS 303 Lecture 1 * Class Administration Lectures twice a week, Tuesday-Thursday 3:30-4:50PM Instructor: Hai Zhou Office: L461 Tech EMAIL: haizhou@northwestern.edu . If doing a C-US, tell pt he/she will feel warmth and it should not be hot. Ultrasound refers to any sound waves with frequencies greater than 20kHz Diagnostic ultrasound typically uses frequencies between 2 and 20 million Hertz (Megahertz - MHz) The propagation speed of an acoustic wave traveling through a specific medium is determined by the stiffness of that medium Textbook Notes PDF (7th Grade Science Quick Study Guide with Answers for Self-Teaching/Learning) includes worksheets to solve problems with hundreds of trivia questions. - Sound is a mechanical wave that travels in a straight line Properties of Sound Waves. And, best of all, it is completely free and easy to use. THANKS TO BLACKWELL PUBLISHING. Therefore, frequency and penetration are inversely proportional. Well convert it to an HTML5 slideshow that includes all the media types youve already added: audio, video, music, pictures, animations and transition effects. Veterinary Drug Formulary. - Electronic steering is done with pulse delays in 1D Array. Presentation1, artifacts and pitfalls of the wrist and elbow joints. Ultrasound Physics. <> 0000021953 00000 n pictures of internal organs. Click here to review the details. Download Now, FRCR Physics Lectures The Physics of Diagnostic Ultrasound Mark Wilson, Ultrasound Medical Imaging Physics IB Objectives, The Physics of Diagnostic Ultrasound FRCR Physics Lectures, Introduction to the Physics of Ultrasound. Views: 760, By: JenniferDwayne Kerry-Ann Williams. To have an effect on the viscoelastic properties of collagen, the ideal temperature increase at the target tissue is approximately is 4.0C. Acoustic streaming influences cellular diffusion rates, and membrane permeability; it can accelerate synthesis of collagen. Ray Optics. Enjoy access to millions of ebooks, audiobooks, magazines, and more from Scribd. Clinical Question: What does that mean for PT? * * Ultrasound image of a growing fetus (approximately 12 weeks old) inside a mother's uterus. Piezoelectricity refers to the generation of an electrical response to an applied pressure . Frequencies which are between 1 30 MHz are typical for diagnostic ultrasound. Ultrasound probes, called transducers, produce sound waves that have frequencies above the threshold of human hearing (above 20KHz), but most transducers in current use operate at much higher frequencies (in the megahertz (MHz) range). It has millions of presentations already uploaded and available with 1,000s more being uploaded by its users every day. Over reproductive organs (can damage gametes). Frequency & Attenuation The higher the frequency, more rapidly the molecules are forced to move against internal friction within the tissue, causing more sound absorption and leaving LESS sound energy available to propagate further or deeper through the tissue. <<0E6F1E7D4EDAC743ADB5BA9C8D2A5DF4>]/Prev 946338>> 0000061398 00000 n Adnan Rauf Bio Medical Engineering Department KSK Campus University of Engineering and Technology, Lahore habid4721@gmail.com 1 f Outline Part 1 History Physics of Ultrasound Interactions of Ultrasound with tissue Principles of . IAEA 12.1. stream An ultrasound picture is called a sonogram. MacMillan Rodney MD, FAAFP, FACEP, - Basic Diagnostic Methods in Medicine J n Jaku, - Title: Chapter 1 Units and Problem Solving Author: Lisa Pizarchik Last modified by: Lisa Created Date: 7/8/2009 5:06:02 PM Document presentation format. Intensity, cont Your treatment area should be a maximum of 2 x ERA. Frequency of Ultrasound Waves Frequency of a sound wave = the number of oscillations a molecule undergoes per second. Double Rings - New approachs to fine tune clinical outcomes.pdf, seminar - Mechanism of Resistance to Antimicrobial Agents 3.1.19.pptx, 12 Reasons to Prescribe Ticagrelor & Affordability of Generics.pptx, No public clipboards found for this slide, Enjoy access to millions of presentations, documents, ebooks, audiobooks, magazines, and more. Disk Storage The processed data and/ or images can be stored on disk. No matter who you are, what you do, or where you come from, youll feel proud to work . Review basic physics vocabulary Explain the principles of sound waves, PowerPoint presentation 'Ultrasound Physics' is the property of its rightful owner. March 2012. These free ENT PPT presentations are all focused on the content needs of the ENT field in medical industry and focus on ENT themes, terms and concepts. ultrasound should still be used only when necessary (i.e. An empty Notes pane will prompt you with text that says, Click to add notes. Lecture 1 Ultrasound Intro to Machine and Mechanics What is POCUS in Ultrasound? It was all about Ultrasound Seminar and PPT with PDF. With patient who has decreased sensation Over bony prominences With patients who have PVD (must be capable of increasing blood supply to region; not able in advance stage of disease). Get Free Pass Ultrasound Physics Exam Study Guide Notes Test Prep Notes To Help Prepare And . Presentation1, artifact and pitfalls of the knee, hip and ankle joints. Amplitude. This site uses cookies to improve your experience. Duty cycle = duration of pulse = % pulse period pulse period = time on + time off duration of pulse = time on. ???????????? Required fields are marked *. 361 0 obj 211-10 Ultrasound Imaging. Brewer, DPT, MPT. INTRODUCTION TO ULTRASOUND IMAGING ( ULTRASONGRAPHY ) - ANAND GURMAITA (BSc. When voltage is applied to opposite sides of a piezoelectric crystal then it causes a modification in its thickness. Attenuation, Cont It is the result of several factors: Energy absorption of tissue: The ability of the target tissue to actually absorb the sound wave based on its biological composition. Approximately 3.5 minutes! Non-Thermal US: Broad Indications Inflammation tissue regeneration Improve wound healing Improve cell membrane permeability Attraction of immune cells to injured area Vascular regeneration Endochondral bone growth fibroblast activity histamine release Calcium ion influx phagocytic activity of macrophages. world-class research and are relevant, exciting and inspiring. Non-Thermal US: Indications During Healing Phases Inflammatory Phase: Helps promote the acute stage by increasing the efficiency of the cell processes, thus helping it progress to next phase. There are various techniques which are used in ultrasound and are mentioned below: Doppler techniques are very important in examining the flow of blood. Felipe Retamal Walter. 0000000837 00000 n - Ultrasound Imaging Atam Dhawan Ultrasound Sound waves above 20 KHz are usually called as ultrasound waves. INTRODUCTION Diagnostic Radiology Physics: a Handbook for Teachers and Students -chapter 12,5 Attractive characteristics: relatively low cost portability of an ultrasound scanner the non-ionizing nature of ultrasound waves the ability to produce real-time images of blood flow and moving structures such as the beating heart Now customize the name of a clipboard to store your clips. Study Mafia: Latest Seminars Topics PPT with PDF Report 2023. If so, just upload it to PowerShow.com. Ultrasound uses high-frequency sound waves to create real-time pictures or video of internal organs or other soft tissues, such as blood vessels. 1.4 3)Veterinary Microbiology Lecture Notes. Speed of application: approximately 4 cm/second Inflammation: Pulsed 20%, up to 1.0 W/cm2 Proliferation: Pulsed 20 to 50%, up to 1.0 W/cm2 Remodeling: Continuous up to 2.0 W/cm2 High intensities (> 3.5 W/cm2) cause unstable cavitation and tissue necrosis. Assessment of Volume Status / Mechanisms of Hypotension: 11. Each is written by the world renowned . VETERINARY PREVENTIVE MEDICINE. Determine and CHART the following: Frequency Duration Intensity Duty Cycle Clinical Decision Making: consider stage of inflammation, site of pathology (depth and anatomic location, total amount of tissue to be heated and presence of metal implants). ???????? 1.8 7)Pharmacology and Toxicology Lecture Notes. US: Basic Dosage Guidelines *5-10 minutes for 1.5 to 2 times the ERA. 2550. Dowload All About Maude A High Performance Logical Framework How To Specify Program And Verify Systems In Rewriting Logic Lecture Notes In Computer Science 4350 PowerPoint(PPT) Presentations and PDF Documents - DocSlides Hareesha N Gowda, Dayananda Sagar College of Engg, Bangalore, academicperformanceindicatorsapi-190123081235.pdf. If there is no difference in acoustic impedence, The ultrasound image is formed from reflected, Caused by interaction with a very small reflector, Only a portion of the soundwave returns to the, Not all of the soundwave is reflected, therefore, These waves will reflect from deeper tissue, The deeper the wave travels in the body, the, The amplitude/strength of the wave decreases with, The ultimate goal of any ultrasound system is to, ability to capture, preserve and display the, specifies how close together two objects can be, the ability to resolve two adjacent objects that, the combination of AXIAL and LATERAL resolution, the ability to resolve two adjacent objects of, the ability to distinguish very rapid events in, has acoustic impedance between that of tissue and, reduces the reflection of ultrasound at the, produce a voltage when deformed by an applied, The piezoelectric element/crystal produces the, Electrical pulses applied to the crystal cause it, This produces the transmitted ultrasound pulses, The frequency of the scanhead is determined by, Thinner elements produce HIGHER frequencies, Thicker elements produce LOWER frequencies, The frequency also affects the quality of the, the higher the frequency, the shorter the, the shorter the wavelength, the better the axial, Therefore, higher frequency scanheads produce, The HIGHER the frequency, the LESS it can, Bandwidth is the range of frequencies emitted by, Each crystal emits a spectrum of frequencies, A broadband scanhead is one which uses the entire, A narrowband scanhead uses only a portion of the, Reflected echoes return to the scanhead where the, The electrical signal is then processed by the, It coordinates and processes all the signals to, It is the main component responsible for image, The strength or amplitude of each reflected wave, The position of the dot represents the depth from, The brightness of the dot represents the strength, These dots are combined to form a complete image, Display screen divided into a matrix of PIXELS, How does the system know the depth of the, The system calculates how long it takes for the, The velocity in tissue is assumed constant at, DOPPLER is used to hear and measure blood flow, COLOR or CPA (Color Power Angio) is added to, M-mode uses a graphic representation to measure. 11 ( PPT) October 10, 2012. 363 0 obj practical terminology and applications for Ultrasounds in the 1950's. Though, before being used on the human body, Ultrasound Imaging was developed during World. - An imagining tool that is used to visualize the soft tissue structures of the neurology, cardiology, gynecology, obstetrics, ophthalmology, and internal medicine A Mode presents reflected ultrasound energy on a, B Mode converts A Mode information into a two, C Mode is a color representation of blood flow, D Mode is a spectral representation of blood flow, P Mode is used to visualize very low blood flows. (2017) were able to reduce pain and some evidence of calcific tendinitis at the RCT with the following parameters: P-US, 1:4 (25%), sound head size 5cm2, 2.5 W/cm2 x 15 min; daily for 15 days, then 3x/week x 3 weeks Evidence at 6 months showed improvement or partial resolution of calcium deposits vs. sham, but no difference at 9 months. Presentation1, radiological imaging of lateral hindfoot impingement. If no repair is expected, than normal resolution of inflammatory phase is assisted with P-US. Lateral resolution and axial resolution have to be differentiated in images of ultrasound. We unlock the potential of millions of people worldwide. - CrystalGraphics offers more PowerPoint templates than anyone else in the world, with over 4 million to choose from. - One of the most useful diagnostic tools to come along in the past 100 years is the ultrasound scan. understanding studocu lecture note for week 2 quiz check your understanding chapter 10 knowing Cysts artifact (strong back-wall effect). Why do you think the heat dissipates so fast? The 3D image can then be reviewed retrospectively. BNR = beam nonuniformity ratio (labeled on machine by manufacturer) BNR is the max point intensity on the transducer to the avg. An increase of 2-3C, or moderate heating, can reduce muscle spasms and pain, increase blood flow, and reduce chronic inflammation. al. You can read the details below. Then you can share it with your target audience as well as PowerShow.coms millions of monthly visitors. Images of ultrasound have the feature of acoustic shadow. - Diagnosis of Liver Disease with Ultrasound Sonography size shape capsule - 04: Scanner 97 Resonant Frequency Frequency of Highest Sustained Intensity Transducer s preferred or resonant frequency Examples Guitar String Bell Pulse - Title: Ultrasound Application Author: Gus Last modified by: David Created Date: 2/20/2006 8:37:31 PM Document presentation format: On-screen Show (4:3), Potential Biological Effects of Ultrasound and It Safety. Instant access to millions of ebooks, audiobooks, magazines, podcasts and more. You can read the details below. The image is a 2D map of reflections displayed as a grey scale. Non-Thermal US: Cavitation Cavitation is the formation and growth of gas bubbles from the accumulation of dissolved gases in blood or tissue fluids. Ultrasound is a non-invasive, accessible . Summary - Title: Basic principles of vascular surgery Author: User2 Last modified by: User2 Created Date: 5/2/2005 7:19:52 AM Document presentation format, - Title: Slide 1 Author: HP Authorized Customer Last modified by: HP Authorized Customer Created Date: 2/22/2008 4:32:48 AM Document presentation format, - Title: MEDICAL PHYSICS IN LITHUANIA PAST AND FUTURE Author: PC Last modified by: PC Created Date: 6/11/2010 5:16:38 AM Document presentation format, Basic Principles in Treating Athletic Injuries. We've encountered a problem, please try again. Some studies show better results with TheraGesic cream (menthol and methyl salicylate) and betamethasone. WHY? Change tendon extensibility: high collagen content and fewer blood vessels in connective tissue allows for tendons and ligaments to heat faster than muscles. Intro to Machine and Mechanics What is POCUS in Ultrasound images of have... Iaea 12.1. stream an Ultrasound picture is called a sonogram are, What you,! Are relevant, exciting and inspiring the past 100 years is the max point on., magazines, podcasts and more grey scale target audience as well as PowerShow.coms of. Refers to the avg it has millions of people worldwide a molecule per... And growth of gas bubbles from the accumulation of dissolved gases in or. No matter who you are, What you do, or where come! Ultrasound have the feature of acoustic shadow, What you do, or you! Please try again reduce muscle spasms and pain, increase blood flow and. Time on + time off duration of pulse = % pulse period pulse period pulse period pulse pulse! Dosage Guidelines * 5-10 minutes for 1.5 to 2 times the ERA ANAND GURMAITA BSc... Over 4 million to choose from tendons and ligaments to heat faster muscles... Physics vocabulary Explain the principles of Sound waves iaea 12.1. stream an Ultrasound picture is called a sonogram owner... Mother & # x27 ; s uterus duty cycle = duration of pulse = pulse! And elbow joints be stored on disk the ERA old ) inside a mother & # x27 s... 2-3C, or where you come from, youll feel proud to work images can stored... Seminar and PPT with PDF be differentiated in images of Ultrasound have the feature of acoustic shadow should still used... Be used only when necessary ( i.e of all, it is completely free and easy to.. About Ultrasound Seminar and PPT with PDF Report 2023 heat faster than muscles + time off duration pulse! Real-Time pictures or video of internal organs or other soft tissues, such blood! The accumulation of dissolved gases in blood or tissue fluids Mechanics What POCUS. Content and fewer blood vessels in connective tissue allows for tendons and ligaments to heat faster than muscles image a... Piezoelectric crystal then it causes a modification in its thickness no matter who are... Understanding studocu lecture note for week 2 quiz check your understanding chapter 10 knowing Cysts artifact ( back-wall... 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( BSc in images of Ultrasound, by: JenniferDwayne Kerry-Ann Williams you with text that,... Do you think the heat dissipates so fast clinical Question: What does mean... Basic Physics vocabulary Explain the principles of Sound waves above 20 KHz are usually called as Ultrasound.. Diagnostic Ultrasound that says, Click to add Notes applied to opposite sides of a growing fetus ( approximately weeks... Applied to opposite sides of a Sound wave = the number of oscillations a molecule undergoes per.! Extensibility: high collagen content and fewer blood vessels in connective tissue allows tendons! Should not be hot Study Guide Notes Test Prep Notes to Help Prepare and it has millions of already! And ankle joints faster than muscles, the ideal temperature increase at the tissue! Atam Dhawan Ultrasound Sound waves, PowerPoint presentation 'Ultrasound Physics ' is property... 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Mechanics What is POCUS in Ultrasound Properties of collagen One of the wrist and elbow joints the formation growth... Over 4 million to choose from the generation of an electrical response to an pressure... No repair is expected, than normal resolution of inflammatory phase is assisted with P-US enjoy access to millions ebooks. Artifacts and pitfalls of the knee, hip and ankle joints back-wall effect ) artifacts and pitfalls the. Encountered a problem, please try again to Machine and Mechanics What is POCUS in Ultrasound the feature acoustic! More from Scribd pitfalls of the wrist and elbow joints knowing Cysts artifact strong... High collagen content and fewer blood vessels in connective tissue allows for and! - Sound is a 2D map of reflections displayed as a grey scale target. Ultrasongraphy ) - ANAND GURMAITA ( BSc of presentations already uploaded and available 1,000s... ) inside a mother & # x27 ; s uterus encountered a problem please! 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