Spatial resolution. The spatial resolution of CT is excellent and the primary strength of the modality. Current CT scanners have a spatial resolution of 0.5–0.625 mm in the z-axis, and approximately 0.5 mm in the x- to y-axes.

Mar 27, 2025 · Spatial resolution in CT is the ability to differentiate two adjacent objects or structures as being distinct from each other. A high spatial resolution is important for one to discriminate between structures that are located within close proximity to each other.

High Contrast (Spatial) Resolution The high contrast or spatial resolution of the system is often determined using objects having a large signal to noise ratio. This test measures the system’s ability to resolve high contrast objects of increasingly smaller sizes (increasing spatial frequencies). Several quantitative methods (scanning

CT Spatial Resolution and Sampling. Spatial resolution in CT, as in other modalities, is the ability to distinguish small, closely spaced objects on an image. A common test is an evaluation of limiting resolution, performed using line-pair test patterns.

Oct 10, 2021 · Higher resolution or “sharp” kernels (e.g. bone reconstruction) have better spatial resolution than soft kernels (e.g. soft tissue reconstruction). However, higher resolution kernels do not average out high spatial frequency signals and therefore produce more noise.

Feb 20, 2024 · Spatial resolution refers to the ability of an imaging modality to differentiate two adjacent structures as being distinct from one another. Other related terms include definition or visibility of detail. Spatial resolution is expressed in line pairs per mm (lp mm). The absence of spatial resolution in an image may be referred to as blur.

Contrast resolution -the ability of the scanner to differentiate small differences in attenuation between closely spaced objects. Being able to differentiate between two tissues with similar attenuation is a crucial aspect of a CT scanner. This ability is often what allows for the diagnosis of certain pathologies.

Jun 27, 2019 · Contrast resolution in radiology refers to the ability of any imaging modality to distinguish between differences in image intensity. The inherent contrast resolution of a digital image is given by the number of possible pixel values, and is …

An imaging instrument can be characterized by its spatial resolution, contrast resolution, and temporal resolution. The capabilities of computed tomography (CT) relative to other cardiac imaging modalities can be understood in these terms.

Jun 7, 2018 · Contrast resolution is fundamentally how well the difference is rendered between an object and its surroundings or, alternatively, how well an object stands out from the background. Contrast resolution is pivotal to the property of conspicuity in imaging.