Pulse echo technique - Study guides, Class notes & Summaries

al - Answer-Current induced iby receiver coil. Also comes from the procession of protons in the patient. Chemical pre saturation - Answer-Selectively apply 90 degree pulse at frequency of tissue to be saturated. Moves fat or HBO 90 degrees. 2nd puse wider bandwidth moves both fat and water 90 degrees. One will be saturated so will not be read. Saturating out normal anatomy, pathology is often seen more clearly. NEX number of excitations - Answer-is the number of times each line is filled w...

Spatial resolution is an image quality factor determined by ________ and ________. - ANSWER-Slice thickness and pixel size Inversion time, In an inversion recovery pulse sequence, is the time interval between the: - ANSWER-180 and 90 degree pulses A complicated equation for predicting the MR signal intensity from a tissue subject to a spin-echo sequence is the: - ANSWER-Bloch Equation In a gradient echo pulse sequence, which flip angle will produce a T2 weighted gradient echo image? - A...

Tissues that have low (short) relaxation times have: - ANSWER-High (long) relaxation rates Spatial resolution is an image quality factor determined by ________ and ________. - ANSWER-Slice thickness and pixel size Inversion time, In an inversion recovery pulse sequence, is the time interval between the: - ANSWER-180 and 90 degree pulses A complicated equation for predicting the MR signal intensity from a tissue subject to a spin-echo sequence is the: - ANSWER-Bloch Equation In a grad...

[PEDIA] Inara Long Quizzes - Questions and Answers (Complete Solutions) Which of the following is not part of TOF? A. Pulmonary stenosis B. Atrial septal defect C. Dextroposition of the aorta D. Right ventricular hypertrophy Which of the following is true regarding the pathophysiology of TOF? A. Pulmonary blood flow may be supplied by the patent foramen ovale B. VSD is usually restrictive and large, located below the pulmonic valve C. Aortic arch is right-sided in 50% of cases 20% of cases D. ...

ARDMS Adult Echo Exam 158 Questions with Verified Answers Most common congenital anomaly most frequently seen in adults - CORRECT ANSWER Bicuspid Aortic Valve Which echocardiographic window is used in the detection and assessment of the inferior vena cava? - CORRECT ANSWER Subcostal What is the number and location of the papillary muscles of a normal mitral valve? - CORRECT ANSWER Two; posteromedial and anterolateral Clinically, prolapse of the mitral valve is associated with: - ...

Chemical pre saturation - ANSWER-Selectively apply 90 degree pulse at frequency of tissue to be saturated. Moves fat or HBO 90 degrees. 2nd puse wider bandwidth moves both fat and water 90 degrees. One will be saturated so will not be read. Saturating out normal anatomy, pathology is often seen more clearly. NEX number of excitations - ANSWER-is the number of times each line is filled with the data in K space, the number of times and echo is encoded with the same slope of phase encoding gradi...

Ch. 1 Define Sonography correct answers Medical imaging with ultrasound Ch. 1 What is Sonography accomplished with? correct answers Pulse-echo technique Ch. 1 What are sonographic images composed of? correct answers Many scan lines Ch. 1 2D images are presented in what two forms? correct answers linear and sector Ch. 1 What shape are linear scans? correct answers Rectangular Ch. 1 Define Doppler Effect correct answers A change in frequency caused by moving objects Ch. 1 ...

Electromagnetic energy is symbolized by a sine wave that has two components of measurements, they are: - Answer Wavelength and frequency Of the following techniques which one is applied to prevent "crosstalk" between multi-slices with little or no interslice "gap" - Answer Interleaving The artifact known as aliasing, wrap around or fold over will always show up in what gradient direction? - Answer Phase encoding Which of the following causes of artifacts on MR images is most commonl...

ARDMS Echo RDCS Board Registry practice Test 200 Questions with Verified Answers Which is the following is the typical treatment for advanced pericarditis? a. thoracentesis b. stent placement c. heart transplant d. pericardectomy - CORRECT ANSWER d When recording flow velocity on the LVOT, the: a. PW Doppler cursor should be placed distal to the aortic valve closure b. CW doppler should be placed parallel to the aortic valve closure c. CW doppler should be placed perpendicular to ...

SPI Practice (ARDMS A & B) Exam 79 Questions with Verified Answers C - CORRECT ANSWER What is dynamic aperture? A.aperture that varies with transmit frequency B.aperture that decreases as a function of time C.aperture that increases with increasing focal length D.aperture that changes as a function of frame rate A - CORRECT ANSWER to which acoustic variable is penetration depth inversely related? A.frequency B.wavelength C.period D.propagation speed B - CORRECT ANSWER which im...