100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
CT TEST REVIEW (TEST Q'S AND A'S FOR CT REGISTRY PREP. THIS IS FROM THE BOOK "COMPUTED TOMOGRAPHY FOR TECHNOLOGISTS: EXAM REVIEW" BY LOIS E ROMANS. PUBLISHED BY WOLTERS KLUWER, LIPPINCOTT WILLIAMS AND WILKINS.) $10.49
Add to cart
Quickly navigate to
Preview
  2.  
  3. CT REGISTRY
  4.  
  5. CT REGISTRY

Exam (elaborations)

CT TEST REVIEW (TEST Q'S AND A'S FOR CT REGISTRY PREP. THIS IS FROM THE BOOK "COMPUTED TOMOGRAPHY FOR TECHNOLOGISTS: EXAM REVIEW" BY LOIS E ROMANS. PUBLISHED BY WOLTERS KLUWER, LIPPINCOTT WILLIAMS AND WILKINS.)
 0 purchase
  • Course
  • CT REGISTRY
  • Institution
  • CT REGISTRY

CT TEST REVIEW (TEST Q'S AND A'S FOR CT REGISTRY PREP. THIS IS FROM THE BOOK "COMPUTED TOMOGRAPHY FOR TECHNOLOGISTS: EXAM REVIEW" BY LOIS E ROMANS. PUBLISHED BY WOLTERS KLUWER, LIPPINCOTT WILLIAMS AND WILKINS.) Which is NOT a synonym for the preliminary/localizer image taken at the start of a CT e...

[Show more]

Preview 4 out of 43  pages

Document information

  • August 18, 2024
  • 43
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • which is not a synonym for the preliminarylocaliz
  • the ability of a system to differentiate on the i
  • each two dimensional square of data that make up t

Written for

  • CT REGISTRY
  • CT REGISTRY

Seller

avatar-seller
Winfred

Reviews received

Content preview

CT TEST REVIEW (TEST Q'S AND A'S FOR CT
REGISTRY PREP. THIS IS FROM THE BOOK
"COMPUTED TOMOGRAPHY FOR
TECHNOLOGISTS: EXAM REVIEW" BY LOIS E
ROMANS. PUBLISHED BY WOLTERS KLUWER,
LIPPINCOTT WILLIAMS AND WILKINS.)
Which is NOT a synonym for the preliminary/localizer image taken at the start of a CT examination?

A. Topogram

B. Scout

C. Scanogram

D. Spiral - Correct Answer D. Spiral



The ability of a system to differentiate, on the image, objects with similar densities is known as:

A. High contrast resolution

B. Low contrast resolution

C. Spatial resolution

D. Temporal resolution - Correct Answer B. Low contrast resolution



Each two dimensional square of data that make up the CT image is called a:

A. Pixel

B. Voxel

C. Matrix

D. Fragment - Correct Answer A. Pixel



How many pixels are contained in a 1,024 matrix image? A. 1,024

B. 2,048

C. 262,144

D. 1,048,576 - Correct Answer D. 1,048,576



Beam attenuation can be defined as:

A. The phenomenon by which artifacts result when lower energy photons are preferentially
absorbed, leaving only higher-intensity photons to strike the detector array.

,B. Xray energy that is produced from bombarding a substance with fast moving electrons.

C. The ability of the detector to capture transmitted photons and change them to electronic signals.

D. The phenomenon by which an xray beam passing through a structure is decreased in intensity or
amount because of absorption and interaction with matter. - Correct Answer D. The phenomenon by
which an xray beam passing through a structure is decreased in intensity or amount because of
absorption and interaction with matter.



Which of the following is a low attenuation structure:

A. Iodine filled aorta

B. Rib

C. Trachea

D. Calcified arteries - Correct Answer C. Trachea



An object is slightly less dense than water. What is the expected hounsfield measurement?

A. -940

B. -10

C. 50

D. 850 - Correct Answer B. -10



Why does the administration of iodinated contrast media result in an enhanced image?

A. Iodinated contrast material increases the ability of the enhanced structure to attenuate the xray
beam.

B. Iodinated contrast material decreases the average photon energy of the xray beam; therefore
more photons are absorbed by the patient.

C. The administration of contrast material results in a smaller pixel, thereby increasing spatial
resolution, which results in an enhanced image.

D. - Correct Answer A. Iodinated contrast material increases the ability of the enhanced structure to
attenuate the xray beam.



The xray beam sources for CT produce xray energy that is polychromatic. This means:

A. When viewed by the naked eye, the beam exhibits many different colors.

B. It produce, as a byproduct, a substance known as polychlorinated biphenyl.

C. Photons contained in the beam are all of the same wavelength.

,D. The beam comprises photons with varying energies. - Correct Answer D. The beam comprises
photons with varying energies.



An object that appears on the image but is not present in the object scanned is called a/n:

A. Artifact

B. Anomaly

C. Shadow

D. Ghost - Correct Answer A. Artifact



Which is an advantage of filtering the xray beam?

A. Filtering reduces the anode heat load

B. A filtered beam produces images with substantially less quantum mottle

C. Filtering the beam prevents energy from being converted to heat, therefore 100% of the energy is
converted to xrays.

D. Filtering reduces the radiation dose to the patient. - Correct Answer D. Filtering reduces the
radiation dose to the patient



Scan thickness is primarily important for the part it plays in:

A. Noise reduction

B. The contrast scale

C. Detector aperture opening

D. Volume averaging - Correct Answer D. Volume averaging



You are working with the radiologist to establish examination protocols for your department. Which
of the following is a logical consideration when determining an appropriate slice thickness for studies
of the internal auditory canal?

A. Because the auditory ossicles are quite small, a thin slice will be necessary to reduce the chance
that volume averaging will obscure their appearance on the image.

B. The appropriate slice thickness will vary considerably from patient to patient. Therefore, each
technologist should be free to adjust the slice thickness as he or she deems necessary for the
particular patient.

C. A slice thickness of 5 to 7mm is adequate because the structures of interest are not particularly
small and the examination is most often ordered as a screening study for asymptomatic patients.

, D. The thickest slice available should be used to reduce the radiation dose to the corneas. - Correct
Answer A. Because the auditory ossicles are quite small, a thin slice will be necessary to reduce the
chance that volume averaging will obscure their appearance on the image.



How many CT numbers are assigned to each pixel in the image matrix?

A. One half the number of all values recorded from the detector array

B. One

C. The number of HU per pixel is one tenth the display field of view

D. Two values for a 256 matrix; 4 values for a 512 matrix - Correct Answer B. One



Which is another name for raw data?

A. Image data

B. Scan data

C. Reconstructed data

D. Displayed data - Correct Answer B. Scan data



When in the anatomic position, the arms are:

A. raised above the head, palms backwards

B. crossed over the chest, palms on opposite shoulders

C. down by the sides, palms forward

D. by the sides, elbows bent, palms backward and resting on hips - Correct Answer C. down by the
sides, palms forward



Which of the following components is NOT housed within the gantry?

A. Three phase generator

B. High-frequency generator

C. Slip rings

D. Xenon gas detectors - Correct Answer A. Three phase generator



The power capacity of the generator is listed in:

A. milliamperes (mA)

B. thousand heat units (KHU)

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller Winfred. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $10.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

65646 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 15 years now

Start selling

Recently viewed by you

Package deal ·

(0)

Midterm Exams: NR566/ NR 566 (Latest 2024/ 2025 Updates STUDY BUNDLE WITH COMPLETE SOLUTIONS) Advanced Pharmacology for Care of the Family Reviews| Questions and Verified Answers| 100% Correct – Cha

Class notes ·

(1)

Aantekeningen hoorcolleges, aangevuld met relevante informatie uit werkgroepen en voorgeschreven literatuur, Privaatrecht in Perspectief: Strafrecht en privaatrecht,Rechtsgeleerdheid, Universiteit Utr

Exam (elaborations) ·

(2)

Test Bank Advanced Physiology And Pathophysiology: Essentials For Clinical Practice, 2nd Edition Nancy C. Tkacs,Linda L. Herrmann All Chapters 1-17 With Questions And Answers Complete A+ Guide ISBN:97

Package deal ·

(0)

Exam 1,Exam 2,Exam 3 & Exam 4: NSG3600 / NSG 3600 (Latest 2025/ 2026 UpdateS STUDY BUNDLE PACKAGE WITH SOLUTIONS) Children s Health/ Pediatric | Questions & Answers| Grade A| 100% Correct (Verified So

Package deal ·

(0)

Exam 1 & Exam 2: BIOS252 / BIOS 252 (Latest 2024 / 2025 Updates STUDY BUNDLE WITH COMPLETE SOLUTIONS) Anatomy And Physiology II With Lab | Guides with Questions and Verified Answers | 100% Correct | G

Exam (elaborations) ·

(0)

Actual 2024 AQA GCSE FOOD PREPARATION AND NUTRITION 8585/W Paper 1 Question Paper + Mark Scheme Actual 2024 AQA GCSE FOOD PREPARATION AND NUTRITION 8585/W Paper 1 Food Preparation and Nutrition Merged

Package deal ·

(0)

ACLS Exam AHA ACLS (All Versions) Exams PACKAGE DEAL |BUNDLE contains the latest exams solutions, practice tests, exam reviews and updated study guides - Everything you need to pass ACLS Exam AHA ACL

Exam (elaborations) ·

(0)

NRNP 6675 MIDTERM EXAM (YEAR 2022 – 100/NRNP 6675 MIDTERM EXAM (YEAR 2022 – NRNP 6675 MIDTERM EXAM (YEAR 2022 NRNP 6675 MIDTERM EXAM (YEAR 2022 – 100/100 POINTS) LATEST UPDATE– 100/100 POINTS)

Exam (elaborations) ·

(0)

Hypothesis - CORRECT ANSWER-a tentative answer to a well framed question - an explanation on trial Prediction - CORRECT ANSWER-A logical statement about what will happen if the hypothesis is co
$10.49
  • (0)
Add to cart
Added