- Study guides, Class notes & Summaries

CT basics Ans: • Essentially an x-ray tube that rotates round the pt • Table moves, feeding pt into the gantry • Each large is data collected as a series of slices o Each slice is divided into voxels (volume elements) Multislice scanner Ans: voxel thickness is equal to x-ray beam thickness Slices 2 | Page Ans: o Thinner slice higher radiation dose better quality image o Width and height depend on FOV o Determined by the operator o Thickness is determi...

-

33 pages

Written in 2024/2025

Grade A+

Expert1

The word Tomo is tomography means Ans: To cut What is the Z-axis Ans: the thickness of a cross-sectional slice. The degree to which an x-ray beam is reduced by an object is referred to as Ans: Attenuation The amount of the x-ray beam that is absorbed per unit thickness of the absorber Ans: Linear Attenuation 2 | Page difference in linear attenuation coefficient is responsible for Ans: Image Contrast These are the two dimensional squares of th...

-

64 pages

Written in 2024/2025

Grade A+

Expert1

For a typical 64 to 128 detector array CT scanner, the fan angle is approximately ___ degrees, while the full cone angle is about ___ degrees Ans: 60, 2.4 CT Fan beam projection diagram Ans: CT Cone beam projection diagram Ans: CT True cone beam projection diagram Ans: 2 | Page Why is an arc-shaped detector beneficial in CT? Ans: By mounting the detector modules on a support structure that is aligned along the radius of curvature emanating fr...

-

60 pages

Written in 2024/2025

Grade A+

Expert1

CT was developed in Ans: 1970s Pioneer of CT and also Nobel Prize winner? Ans: Godfrey Hounsfield A collimated x-ray beam is directed on the patient and it detected by a Ans: Solid state image receptor 3 possible Types of image planes shown on the CT monitors? Ans: Transverse, Sagittal, Coronal Conventional Tomography is also called? and why? 2 | Page Ans: Axial Tomography: the plane of the image is parallel with the long axis of the body Typ...

-

17 pages

Written in 2024/2025

Grade A+

Expert1

Godfrey Hounsfield in 1970 Ans: Who invented CT and when 1st generation scanner Ans: Pencil beam Single Detector Translates 1 degree Took 5 minutes to get data for one slice Slow Ans: Disadvantage of 1st generation scanner 2nd generation scanner 2 | Page Ans: Fan shaped be

-

7 pages

Written in 2024/2025

Grade A+

Expert1

Each sweep of the source-detector around the body during CT is called a _____. Ans: translation Each CT projection records variations in ____. Ans: mass density and effective atomic number Each CT projection is ____. 1. printed on film 2. stored on the computer 3. displayed on the monitor Ans: stored on the computer 2 | Page The cross-sectional anatomy is translated into ____ during CT reconstruction. Ans: a matrix of values

-

7 pages

Written in 2024/2025

Grade A+

Expert1

Computed tomography (CT) Board Review - Body CT: The Essentials

-

15 pages

Written in 2024/2025

Grade A+

Teachme2oo

Computed Tomography (CT) Bundled Exams Questions and Answers Multiple Versions Latest Updates (2024/2025) (Complete and Accurate)

-

15 items

StellarScores

Computed Tomography (CT) Questions and Answers Latest Update Already Passed Which artifact is caused by high-density contrast material? Beam hardening artifact Which protocol is best for imaging the pancreas? Pancreatic protocol with arterial and venous phases Which CT scan is used to evaluate suspected appendicitis? CT Abdomen and Pelvis with contrast Which imaging technique is used to visualize joint structures? CT Arthrography Which parameter influences the number of sl...

-

15 pages

Written in 2024/2025

Grade A

StellarScores

Computed Tomography Exam Questions and Answers Latest Update 2025 Already Passed what term is applied to a single square, or picture element, in the image display matrix - Answers pixel what determines the amount of data displayed on the monitor - Answers field of view a volume element is called - Answers voxel a relative comparison of x-ray attenuation of a voxel of tissue to an equal volume of water - Answers CT number what is the CT number of water - Answers 0 the major system componen...

-

5 pages

Written in 2024/2025

Grade A+

TutorJosh

COMPUTED TOMOGRAPHY- EXAM QUESTIONS AND CORRECT ANSWERS (GRADED A+) THE ABILITY TO SCAN MOVING OBJECTS EFFECTIVELY IS - Answers TEMPORAL RESOLUTION WHEN A CT IMAGE APPEARS GRAINY OR SPECKLED IT IS REFERRED TO AS A - Answers NOISY IMAGE HOW IS NOISE REDUCED - Answers BY INCREASING 1. mAs 2. slice thickness 3. pixel size IF MORE PHOTONS ARE DETECTED THE NOISE IS - Answers LESS APPARENT WHAT IS CREATED WHEN THE HOUNSFIELD NUMBERS ARE NOT ACCURATE FOR CONSISTENT MATERIAL BECAUSE OF BEAM DIVER...

-

7 pages

Written in 2024/2025

Grade A+

TutorJosh

COMPUTED TOMOGRAPHY EXAM QUESTIONS AND CORRECT ANSWERS LATEST UPDATE (RATED A+) What are the Fundamental Principle of CT ? - Answers Image of an object is reconstructed on the basis of the attenuation that occurs as x-radiation is transmitted through it. What are the Fundamental Principle of CT ? (Data Acquisition) - Answers X-ray beam is rotated around the patient, exposing a given volume of tissue form all direction. Detector measures radiation as it transmitted through PT. What are the Fu...

-

9 pages

Written in 2024/2025

Grade A+

TutorJosh

Bushong ch 28-3 worksheet_ Computed Tomography Exam Questions And Answers Latest Update

-

7 pages

Written in 2024/2025

Grade A+

Cindellera

Computed Tomography Exam Review (Mosby's Third Edition) – Procedures Exam Questions And Answers Latest Update 2025

-

121 pages

Written in 2024/2025

Grade A+

Cindellera

Computed tomography (CT) Board Review - Body CT: The Essentials Computed tomography (CT) is at the heart of every modern radiology department because of its: 1. speed 2. reliability 3. ability to separate overlapping structures - ANS: 1, 2, & 3 The primary interaction with the anode is excitation resulting in ___ radiation. - ANS: Infrared (heat) X-rays pass through the patient interacting with tissue by absorption or scattering, which results in a measured attenuation of the incident ...

-

9 pages

Written in 2024/2025

Grade A

dennys

COMPUTED TOMOGRAPHY CHAPTER 1 LATEST UPDATE 2024/2025

-

4 pages

Written in 2024/2025

Grade A+

PrettyGrades4

Computed Tomography Exam Prep Questions and Answers (Latest Update 2025)

-

12 pages

Written in 2024/2025

Grade A+

Allivia

Computed Tomography Exam Questions and Answers (Latest Update 2025)

-

21 pages

Written in 2024/2025

Grade A+

Allivia

Computed Tomography Test Prep Questions and Answers (Latest Update 2025)

-

11 pages

Written in 2024/2025

Grade A+

Allivia

Computed Tomography (CT) Exam Questions and Answers (Latest Update 2025)

-

4 pages

Written in 2024/2025

Allivia