Spatial resolution is Study guides, Class notes & Summaries

ARRT Registry Practice Test1 All of the following EXCEPT ___ will result in an increase in AEC response time. a. decreasing the kVp b. Increasing the focal spot size c. increasing the part thickness d. increasing the SID - ANSWER b. increasing the focal spot size Increasing the focal spot size does not change the AEC response time It affects the spatial resolution. Decreasing the kVp increases the exposure time because more photons are absorbed, resulting in fewer...

What is the smallest component of a digital image - correct answers pixel How many CT numbers are assigned to each pixel in the image matrix? - correct answers One In a CT image, the CT number - correct answers Of a material is dependent on its linear attenuation coefficient Each two-dimensional square of data that make up the CT image is called a - correct answers pixel What is an element of the digital image - correct answers pixel Which of the following influences the spatial r...

What characterises Electro-magnetic radiation 1. Wavelength 2. amplitude - height of wave from centreline to peak 3. Polarization - orientation vector of photons 4. frequency - number of wave cycles Why can people get sunburnt whilst sitting in the shade 1. Reflected UV radiation 2. Scattered UV radiation - from atmosphere and clouds What is a high pass filter? - Image enhancement technique which enhaces the edges and finer details of an image - This is done by subtracting a lo...

Mosby CT Registry Review 2024 Questions and Answers 100% Pass What is the smallest component of a digital image - Correct Answer ️️ -pixel How many CT numbers are assigned to each pixel in the image matrix? - Correct Answer ️️ -One In a CT image, the CT number - Correct Answer ️️ -Of a material is dependent on its linear attenuation coefficient Each two-dimensional square of data that make up the CT image is called a - Correct Answer ️️ -pixel What is an element of the d...

Which of the following is the most significant source of artifact in medical imaging? - correct answer Subject motion Which of the following imaging modalities use ionizing radiation as its source? - correct answer Computed tomography Which of the following modality is most affected by the skill of the operator? - correct answer Ultrasound In the formation of a digital image, sampling affects what? - correct answer Visible fine detail Image matrix size Spatial resolution Wh...

LRA 221 Week 1 Questions and Verified Answers - (2024/ 2025 Update) 100% Correct Q: DICOM is a standard that allows imaging modalities and PACS to communicate in the same language A. True B. False Answer: A. True Q: Which of the following statements is not true? A. Matrix size can change without affecting the FOV B. FOV can change without affecting the matrix C. Changing the matrix or the FOV will change the size of the pixel D. Changing the matrix and the FOV will not chan...

What is the smallest component of a digital image - pixel How many CT numbers are assigned to each pixel in the image matrix? - One In a CT image, the CT number - Of a material is dependent on its linear attenuation coefficient Each two-dimensional square of data that make up the CT image is called a - pixel What is an element of the digital image - pixel Which of the following influences the spatial resolution in cardiac CT imaging - *detector size *reconstruction interval *pitch As pat...

Mosby CT Registry Review (2023/2024) Graded A What is the smallest component of a digital image pixel How many CT numbers are assigned to each pixel in the image matrix? One In a CT image, the CT number Of a material is dependent on its linear attenuation coefficient Each two-dimensional square of data that make up the CT image is called a pixel What is an element of the digital image pixel Which of the following influences the spatial resolution in cardiac CT imaging *detector size *recons...

transducer Electronic pulses from the pulser are applied to the ? amplification, compensation, compression, and demodulation What functions are preformed by the receiver? the ratio of the maximum to the minimum intensity that can be displayed The dynamic range of an ultrasound system is described as? frequency divided by bandwidth How is the QF of a transducer determined? PZT The most common man-made crystal is : travel time and speed Which variables must be known in order to calculat...

CT Registry Review Questions with 100% Verified Correct Answers 1. Which of the following statements is false? a. The elimination of superimposed structures is a distinct advantage of CT over plain film imaging. b. CT images possess superior quality. c. Contrast resolution is approximately 10x better with CT compared to plain film imaging. d. Spatial resolution is approximately 10x better with CT compared to plain film imaging. - Correct Answer d 2. Which type of beam coverage w...