Lesson 6: Spatial Compounding & Panoramic Imaging

Question 1

This type of imaging has a wider field of view and is an example of pre processing

Answer 1

Panoramic

Question 2

We slide are transducer ____ to the scan plane when panoramic imaging

Answer 2

Parallel

Question 3

True or false, spatial compounding is useful when scanning obese patients

Answer 3

True

Question 4

A technique that used multiple scan lines in different directions by phasing so that structures are interrogated more than once

Answer 4

Spatial Compounding ( Cross-Beam)

Question 5

In spatial compounding, image quality is improved by _______, which is the temporal averaging. This reduces speckle

Answer 5

Persistence

Question 6

This imaging allows for interrogation from two different modalitites

Answer 6

Fusion Imaging

Question 7

In fusion Imaging, two tracker are on the transducer and one is on the patient, known as the _______

Answer 7

Active Tracker

Question 8

Fusion Imaging is most commonly used for

Answer 8

Prostate Biopsies

Question 9

Soft materials have a ___ strain and a ___ Young’s Modulus

Answer 9

Large strain
Small YM’s

Question 10

Stiff objects have a __ strain, and a ___ Young’s Modulus

Answer 10

Small strain
Large YM’s

Question 11

Young’s Modulus, measured in ___ ranges from ___ for fat to ___ for fibrotic liver

Answer 11

kPa
1- 300

Question 12

Subjecting tissue to manual force, initiated by the sonographer pushing, and tracking the movement of tissue by spatial correlation

Answer 12

Static Method of Elastography

Question 13

Static Method acquires _____ data

Answer 13

Qualitative

Question 14

Using HITACHI emode for Elastography, Blue represents ____ and red represents __

While using SIEMENS , red is ____ and blue is ___

Answer 14

Hard
Soft

Hard
soft

Question 15

Shear waves travel at much slower speeds, ____ to ___ m/s
While compressional waves travel at ___ to ___ m/s

Answer 15

Shear: 0.5-10 m/s
Compressional: 1440-1640 m/s

Question 16

ARFI stands for

Answer 16

Acoustic Radiation Force Impulse Imaging

Question 17

Dynamic methods use short ____ force or a time varying repetitive force

Answer 17

Transient

Question 18

Radiation force converts compressional waves to ______ waves

Answer 18

Shear

Question 19

Dynamic method acquires ___ information

Answer 19

Quantitative

Question 20

Shear Waves are measured in

Answer 20

kPa

Question 21

Elastography measurements are taken in the __ and __ lobes of the liver, __ to __ cm below the Glisson’s capsule. _____ measurements are acquired at a suspended breath hold

Answer 21

7th and 8th
1-2 cm
10

Question 22

Elasography IQE/Median ratio should be < ___ %

Answer 22

< 30%

Question 23

___ % of ROI should be colour filled in the sample box

Answer 23

50%

Question 24

The Inter Quartile Ratio is the ____ average

Answer 24

Median

Question 25

The normal- mild liver kPa is ____ to ___ kPa

Answer 25

5.48 - 8.29 kPa

Question 26

This is the kPa cut off for Cirrhosis

Answer 26

> 11.9 kPa