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UTZ
Prelim
| Question | Answer |
|---|---|
| SONAR: | Sound Navigation and Ranging |
| He used an underwater bell to determine the speed of sound in the waters of Lake Geneva. | Jean-Daniel Colladon |
| He demonstrated the ability of bats to navigate accurately in the dark through echo reflection from high-frequency inaudible sound. | Lazaro Spallanzani |
| They observed that a quartz crystal can produce electrical potential when mechanical pressure is exerted. | Pierre Curie & Jacques Curie |
| Rochelle Salt | Sodium Potassium Tartrate Tetrahydrate |
| He developed very high-frequency sounds above the limit of human hearing. | Francis Galton |
| He mathematically deduced reciprocal behavior of mechanical stress in response to a voltage difference from thermodynamic principles. | Gabriel Lippman |
| The frequency range of millions of cycles per second. | Megahertz |
| They created a powerful high ultrasonic echo-sounding device. A device called hydrophone. | Paul Langevin & Constantin Chilowsky |
| When was the first known sinking of a submarine detected by hydrophone? | Atlantic during World War I in April 1916 |
| Formed the basis of the development of naval pulse-echo sonar. | Hydrophones |
| He used radio echoes to determine the height of the ionosphere. | Edward Appleton |
| He produced the RADAR a first practical system using electromagnetic waves rather than ultrasonics. | Robert Watson-Watt |
| They used ultrasound to destroy parts of the basal ganglia in patients with Parkinsonism and performed craniotomies. | William Fry & Russell Meyers |
| RADAR: | Radio Detection and Ranging |
| ENIAC: | Electronic Numerical Integrator and Computer |
| Inner ear disorder that leads to dizzy spells vertigo and hearing loss. | Meniere's Disease |
| Uses ultrasonic energy in the 40's. | Gastric ulcers & arthritis |
| This was first written document by Lazaro Spallanzani dealing with the use of waves in spatial orientation. | Opus Coli Di Fisica |
| This were created by Jacques and Pierre Curie in 1880. | Piezoelectric Effect |
| Ability of the liquid crystal to produce electricity under the vibrations produced by the ultrasound wave. | Inverse Piezoelectric Effect |
| He first proposed the idea of ultrasound to find flaws deep in metal structures. | Sy Sokolov |
| He received a patent for the "reflectoscope". | Floyd Firestone |
| He created a system wherein the receiver was a separate device collecting the waves that had bounced off the material. | Donald Sproule |
| They introduced "hyperphonography". | Karl & Friedrich Dussik |
| A technique that uses ultrasound to visualize the cerebral ventricles. | Hyperphonography |
| He used a transmission technique in gallstones embedded in soft tissues. | George Ludwig |
| He introduced the ultrasound in diagnostic and medicine using the 1D A-mode (Amplitude mode) to measure the parietal diameter of the fetal head. | Ian Donald |
| Enabling the examiner to visualize 2D-image. | B Mode or Brightness Mode |
| Introduction of real-time ultrasound scanners. | Grey Scale |
| Served as the basis for the construction of the device that enabled the visualization of blood circulation. | Doppler Effect |
| He developed the 1st ultrasound scanner. | Douglass Howry |
| They distinguish normal heart valve motion from the thickened, calcified valve in patients seen with rheumatic heart disease. | Inge Edler & Carl Hertz |
| They built an early obstetric contact-compound scanner to evaluate the location of the placenta and to determine the gestational age. | Tom Brown & Ian Donald |
| Allow the sonographer to obtain images per second at a rate of up to 30 frames/sec | High frequency transducers |
| Today's ultrasound systems: | 1. Color Doppler 2. Spectral analysis 3. 3D & 4D imaging |
| It is designed for superficial imaging. Probe has higher frequency (5-13 MHz) providing better resolution and less penetration. | Straight linear array probe |
| Curvilinear probe is also called ______. | Convex probe |
| It is used for scanning deeper structures. Probes have frequency between 1-8 MHz allowing greater penetration and less resolution. | Curvilinear probe |
| Has smaller and flatter footprint than the curvilinear probe. It is generally used for cardiac imaging, imaging between ribs and small spcaes. | Phased array probe |
| Frequency (MHz) of Probes: 1. Straight linear array probe: 2. Curvilinear probe: 3. Phased array probe: 4. Endocavitary probe: | 1. 5-13 MHz 2. 1-8 MHz 3. 2-8 MHz 4. 8-13 MHz |
| Has a curved face. Has higher frequency than curvilinear probe. | Endocavitary probe |
| Most commonly used for gynecological applications. | Endocavitary probe |
| A transesophageal probe used in cardiology, surgery. It is also used in neurosurgery and obstetrics. | Special probe |
Created by:
bluuberizz