Advanced CT Applications Quiz

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Questions and Answers

What is the primary purpose of CT fluoroscopy?

To facilitate interventional procedures through the use of support tools like the Fluoro Assisted Computed Tomography System
To allow for the reconstruction and display of images in real time with variable frame rates (correct)
To enable fast image reconstruction made possible by special hardware and a new image reconstruction algorithm
To provide continuous scanning made possible by spiral/helical scanning principles

What are the three key advances in CT technology that enable CT fluoroscopy?

Flat-panel digital detectors, C-arm gantry, and variable frame rates
High-speed processing, real-time display, and overlapping structures
Spiral/helical scanning, fast image reconstruction, and continuous image display (correct)
Continuous scanning, fast image processing, and cine mode display

What is the purpose of the Fluoro Assisted Computed Tomography System used in CT fluoroscopy?

To facilitate interventional procedures through the use of a unique flat-panel digital detector and C-arm (correct)
To reduce artifacts such as motion artifact, beam hardening, and poor contrast enhancement
To provide continuous scanning and real-time image display
To enable faster image reconstruction through the use of special hardware and a new algorithm

What is the main difference between conventional CT and CT fluoroscopy?

Conventional CT has a time lag between data acquisition and image reconstruction, while CT fluoroscopy allows for real-time display (C) Signup and view all the answers

What type of artifacts can potentially occur in CT imaging?

All of the above (D) Signup and view all the answers

What is the purpose of the fast image reconstruction and continuous image display capabilities in CT fluoroscopy?

To enable real-time monitoring of interventional procedures (D) Signup and view all the answers

What is the primary purpose of CT angiography?

To image blood vessels using contrast media (C) Signup and view all the answers

Which scanning technique is typically used for CT angiography?

Spiral/helical scanning (D) Signup and view all the answers

What is the advantage of CT angiography over intraarterial angiograms?

Three-dimensional imaging capability (A) Signup and view all the answers

Which of the following is NOT one of the essential elements of CT angiography mentioned in the text?

Radiation dose optimization (C) Signup and view all the answers

What is the purpose of postprocessing techniques in CT angiography?

To display 3D images and perform multiplanar reconstruction (B) Signup and view all the answers

Which of the following acquisition parameters is NOT mentioned in the text as important for CT angiography?

Tube current (C) Signup and view all the answers

What is the main purpose of using fast CT scanners in cardiac imaging?

To reduce motion artifacts and improve spatial and contrast resolution (D) Signup and view all the answers

Which technical requirement is essential for visualizing small differences in tissue contrast in cardiac CT imaging?

Low contrast resolution (B) Signup and view all the answers

What advancement allowed for the development of retrospective imaging in cardiac CT scanning?

ECG correlation with image reconstruction (A) Signup and view all the answers

Why is imaging fast-moving objects important in cardiac CT imaging?

To reduce motion artifacts (C) Signup and view all the answers

What is a key benefit of dedicated reconstruction algorithms in cardiac CT imaging?

Reducing motion artifacts (C) Signup and view all the answers

Why is the DSCT scanner considered to open up a new avenue for successful imaging of the heart?

Due to its ability to meet several technical requirements (D) Signup and view all the answers

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