FREE CIIP Practical Imaging Informatics Questions and Answers
Any component of the image that is extraneous to the representation of tissue structures, can be caused by a technique, technology, hardware, or software error.
An artifact in medical imaging refers to any distortion or error in the image that is extraneous to the actual representation of the tissue structures.
Artifacts can arise from various sources including patient movement, technical issues with the imaging equipment, or software processing errors.
What is the source in projection radiography?
In projection radiography, the source is X-rays, which are a form of ionizing radiation. These X-rays are produced when free electrons emitted from a cathode strike a tungsten anode.
This interaction results in the emission of X-rays, which pass through the body to create an image based on the varying densities of tissues.
How do reconstruction filters define/emphasis image contrast?
Reconstruction filters in imaging modalities like CT are designed to enhance specific image characteristics.
Filters can be tailored to emphasize soft tissue contrast or spatial resolution to visualize bone or fine detail.
The choice of filter affects the overall appearance and diagnostic quality of the reconstructed images.
The image matrix size of a computed tomography image is?
This option indicates a high-resolution image matrix with 512 rows and 512 columns, each pixel encoded with 12 bits.
This is the standard matrix size and bit depth for CT images, allowing for high-quality, detailed images.
Describe the advantages of a PACS archive with ''native'' support Forenterprise image distribution.
This choice highlights the primary advantages of a PACS with native support for enterprise image distribution.
It ensures seamless delivery of images via web clients, eliminating the need for prefetching or persistent storage logic.
Users have a comprehensive view of the patient's medical image history, and shared annotations and presentation states enhance collaboration and diagnostic accuracy.
hardware extensions that allow humans (or other devices) to interact with a computer:
Input/output (I/O) devices are hardware extensions that enable humans or other devices to interact with a computer.
devices facilitate the input of data to the computer and the output of data from the computer.
Tissue characteristics exploited by MRI to manipulate tissue contrast:
These are the primary characteristics used in MRI to create contrast between different types of tissues.
T1 and T2 refer to relaxation times, proton density refers to the concentration of hydrogen protons, blood flow can be visualized with specific techniques, perfusion measures the flow of blood to tissues, and diffusion measures the movement of water molecules within tissues.
How is memory different than a CPU (central processing unit)?
This describes the functions of a Picture Archiving and Communication System (PACS), which is used for managing medical images, not the difference between memory and CPU.
When shopping for a new healthcare information system, what is the most important document for which to ask?
The IHE (Integrating the Healthcare Enterprise) integration statement indicates that the system complies with IHE profiles, ensuring interoperability with other systems.
This document is important but typically follows after ensuring basic compatibility and standards compliance.
What surface in the reading room has the greatest influence on sound transmission?
The ceiling's material and design greatly affect sound transmission within a room. Sound waves can bounce off or be absorbed by the ceiling, influencing the overall acoustics of the space.
A hard, smooth ceiling can reflect sound, while a soft or textured ceiling can absorb sound, reducing echoes and reverberations. Additionally, the height and shape of the ceiling can impact how sound travels within the room.
What are the components located in a CT gantry?
These are the main components of a CT gantry. The high power X-ray tube generates the X-rays needed for imaging, collimators shape and control the X-ray beam, and the linear array of detectors captures the X-rays after they pass through the patient, converting them into data for image reconstruction.