Ultrasound Imaging - Radiology Key
2016年9月17日 · Slice thickness artifact (white arrows) in the transverse US image of the urinary bladder. This artifact is typically seen in transverse views of the urinary bladder when adjacent structures are incorporated into the anechoic urinary bladder fluid.
understand these artifacts to avoid these misdiagnoses and protect patients from undue intervention. Artifacts can be broken down into two categories: those from violation of ultrasound system assumptions and those from interference by external equipment and devices. This review article discusses the most commonly encoun-
Differences in ultrasound elevational beam width (slice thickness ...
2023年12月1日 · Handheld ultrasound devices are increasingly used by medical professionals for bedside ultrasound-guided interventions. Especially for vascular access procedures, the width of the imaging plane, known as the slice thickness or elevational beam width is a prominent source for misinterpretation.
Slice-thickness artifacts in gray-scale ultrasound - PubMed
We have tested and verified this hypothesis by simulating soft tissue interfaces with 400 grit silicon carbide sandpaper in a water tank. A set of clues are proposed to enable the rapid identification of these artifacts.
Elevational resolution (ultrasound) - Radiopaedia.org
2023年8月10日 · Elevational resolution represents the extent to which an ultrasound system is able to resolve objects within an axis perpendicular to the plane formed by the axial and lateral dimensions. As one component of overall spatial resolution, the elevational axis represents the height or “thickness” of the beam itself (or slice thickness) 1 .
Artifacts - Radiology Key
2016年3月10日 · Understanding the basic mechanisms behind ultrasound artifacts, recognizing situations in which they are likely to arise, and becoming familiar with their appearance all help to eliminate misdiagnoses that may otherwise occur.
Effect of gradient strength and bandwidth on slice thickness
2021年9月19日 · Too small a gap in relation to the slice thickness can lead to cross-excitation artifact. A slice is thus excited by transmitting an RF pulse with a center frequency corresponding to the middle of the slice and a bandwidth and gradient slope according to the thickness required.
Ultrasound Image Quality - Oncology Medical Physics
Slice Thickness. Slice thickness, sometimes called elevational resolution, is the width of the imaging plane. Slice thickness depends on the height of the transducer element and is usually the lowest resolution axis.
Beam Width (Slice Thickness) - ScienceDirect
2019年1月1日 · The ultrasound beam has a finite size (slice thickness). Artifacts can occur from out-of-plane echoes (near the central ray).
'Slice Thickness Artifact' - medical-ultrasound-imaging.com
In ultrasound imaging that occurs when the slice thickness is wider than the scanned structure. This artifact is also called slice thickness artifact or volume averaging artifact. See also Ultrasound Picture.
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