logging in or signing up Ultrasonography-By; Dr. Dhiren B. Bhoi drdhirenvet Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 1811 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: September 19, 2009 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... By: roberttaylor (29 month(s) ago) “Unnecessary risks are being taken by patients seeking the liberation treatment.” says Dr. Avneesh Gupte of the CCSVI Clinic. “It has been our contention since we started doing minimally invasive venous angioplasties nearly 6 years ago that discharging patients who have had neck vein surgery on an outpatient basis is contra-indicated. We have been keeping patients hospitalized for a week to 10 days as a matter of safety and monitoring them for symptoms. Nobody who has the liberation therapy gets discharged earlier than that. During that time we do daily Doppler Ultrasounds, blood work and blood pressure monitoring among other testing. This has been the safe practice standard that we have adopted and this post-procedure monitoring over 10 days is the subject of our recent study as it relates to CCSVI for MS patients.” For more information Log on to http://ccsviclinic.ca/?p=866 OR Call on Toll Free: 888-419-6855. Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript ULTRASONOGRAPHY : ULTRASONOGRAPHY PRESENTED BY DR. DHIREN B. BHOI M. V. Sc. VETERINARY GYNAECOLOGY AND OBSTETRICS COLLEGE OF VETERINARY SCI. & ANIMAL HUSBANDRY ANAND Ultrasonography : Ultrasonography Definition : Definition Ultrasonography is study of internal organs or blood vessel using high frequency sound waves, the actual test called ultrasound scan or sonogram. Ultrasound as sound waves of frequencies greater than audible to human ear i.e. greater than 20,000Hz. Frequencies between 1 to 10 MHz are mainly used for the purpose of diagnostic ultrasound. Several types of ultrasound which is used in diagnosing specific parts of the body Historical Introduction : Historical Introduction 1876 Sir Francis Galton : 1st ultrasound instrument developed in dog 1880 Jacques & Pierre : discovery of piezoelectric effect (mechanical electric) 1881 Curies : reverse piezoelectric effect for Industrial applications 1940 Ultrasonic energy was 1st applied in human body for medical purpose. 1954 Medical application of ultrasound. Indications : Indications Use in detecting abnormalities of heart, uterus, pancreas, urinary bladder, liver, stomach, kidney, eye & teeth. Most commonly use in obstetric sonography to confirm intrauterine & exclude ectopic pregnancy, fetal sex determination, viable fetus, missed abortion, retained products after termination, evaluate anomalies, Guided amniocentesis, choroinic vilius biopsy, intrauterine fetal transfusion. In case of abdominal sonography check tumor, clotting status before intra-abdominal biopsy, diagnose the diaphragmatic hernias, chloecystitis, intussuception ,gall stone, bile duct obstruction, cirrhosis, speelnlomegaly, & pancreatic abscess. Also detected Neural tube defects. Slide 6: Sonography of urinary tract detect renal abnormalities, tumor, urinary calculi of urinary bladder, morphology of kidney & lithotripsy. Transrectal sonography useful to diagnose the prostatic malignant diseases. Useful in Echocardiography& congenital heart defect. Ultrasound also used to clean teeth in dental hygiene. Ocular sonography used evaluation of internal ocular structures. Also useful in cataract treatment, Retrobulbar abnormalities which may be difficult to detect radiographically but easily identified sonographically. Slide 7: A sound waves travels in a pulse & when it is reflected back it becomes an echo. The pulse-echo principle is used for ultrasound imaging. A pulse generated by one or more piezoelectric crystals in an ultrasound probe or transducer. Ultrasound probe crystal is shocked by single extremely short pulse of electricity to vibrate at a frequency determined by its thickness. Once echo are converted into electrical signals, these are processed & transformed into a visual display of the measure of the amplitude of the echo this is echo quantification. The transducer picks up the return echo & record any changes in the pitch or direction of the sound, the image is immediately visible on the screen. Principle Principle : Principle Color Doppler Image : Color Doppler Image Powerful non-invasive tool. CDI can see the structure in different colors. Two dimensional echo. CDI was introduced in the middle 1980. Geoff Stevenson given first demonstration of Color Doppler. Its use has since expands to whole body vascular evaluation & the color coded blood flow display map. Diagnose disease in almost every part of body where acoustic access is possible Color doppler application include echocardiography, peripheral vascular disease detection of arterial stenosis, venous thrombosis, venous blood flow pattern, & development of aneurysms. In evaluation of blood flow to critical organ It also shows flow characteristics in portal hepatic veins artery & renal artery stenosis The technique provides non-invasive imaging of blood flow based on doppler frequency shifts resulting from moving blood cells in vessel in the ultrasound Ultrasonography : Ultrasonography Advantages Many advantages over conventional radiography No ionizing radiation Safe in pregnancy No known side effect Cheap, portable machine Minimum preparation of patient Painless, noninvasive Direct vision for biopsy Disadvantages Sonographer should be expert in diagnosis of pregnant animals. Performing & interpreting the examination can be extremely difficult. Portable Ultrasound machine : Portable Ultrasound machine Ultrasonography Machine : Ultrasonography Machine Types of Probe : Types of Probe PVC Pipe Fitted Around 7.5 MHz Transducer with Electrical Tape : PVC Pipe Fitted Around 7.5 MHz Transducer with Electrical Tape Slide 15: ULTRASOUND PROBES FOR COWS Slide 16: PLACEMENT OF PROBE Slide 17: EMBRYO 25-30 DAYS Slide 18: EMBRYO 25 DAYS Day 12 of Estrous Cycle12 mm Follicle : Day 12 of Estrous Cycle12 mm Follicle Ovary Follicle Picture courtesy of Dr. Joel Yelich, Univ. Florida Ovary With Corpus Luteum : Ovary With Corpus Luteum CL Picture courtesy of Dr. Joel Yelich, Univ. Florida Slide 21: EMBRYO 37 DAYS Slide 22: FETUS 55 DAYS Ultrasonography in dog : Ultrasonography in dog Slide 24: EMBRYO 18 DAYS EMBRYO 22-24 DAYS Ultrasonography in cat : Ultrasonography in cat Swine Ultrasound Through Rotation of Probe Across the Reproductive Tract : Swine Ultrasound Through Rotation of Probe Across the Reproductive Tract UltrasoundSwine - Position Lubricated Probe on BellyDirected at a 45o Angle Toward Spine : UltrasoundSwine - Position Lubricated Probe on BellyDirected at a 45o Angle Toward Spine Ovary with Follicles : Ovary with Follicles Follicle Picture courtesy Dr. Neil Schrick Day 18 Pregnancy : Day 18 Pregnancy Allantoic Fluid Embryo Endometrium Picture courtesy Dr. Neil Schrick Day 40 - Pregnancy : Day 40 - Pregnancy Live Embryo Dead Embryo Picture courtesy Dr. Neil Schrick Ultrasonography in snake : Ultrasonography in snake Ocular Sonography : Ocular Sonography CDI of Kidney & Thyroid : CDI of Kidney & Thyroid Color Doppler Image of Liver : Color Doppler Image of Liver CDI of carotid artery : CDI of carotid artery Endometrial polyp. : Endometrial polyp. Ultrasonic scaler used dental Hygiene : Ultrasonic scaler used dental Hygiene You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.