The posterior pleural reflections

Genereux, G P

doi:10.2214/ajr.141.1.141

Cited by 20 publications

(3 citation statements)

References 2 publications

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“…The densitometer reading across the positive Mach band at the level of the black bar shows no marked change in optical density, thus confirming its psychophysiologic nature (5). A similar result occurs at the negative Mach band along the descending aorta.…”

Section: The Paraspinal Linesupporting

confidence: 62%

“…visceral pleura of the lung, the parietal pleura of the mediastinum, and the potential pleural space outlined by paraspinal fat medially and aerated lung laterally. However, measurements of this line have shown it to be "thicker" than might be expected given the actual widths of these membranes (5). Certainly, these membranes are included in defining the interface at which the positive Mach band shown in Figure 10 occurs, but the ceramic model in Figure 7 The practical value of Mach bands is further illustrated in Figure 11.…”

Section: The Paraspinal Linementioning

confidence: 99%

“…Note that at no time does the aortic border form on the CT image. The presence of paraspinal fat is common and often forms such contours on routine chest radiographs (5).…”

Section: Mach Bands On Ct Scout Imagesmentioning

confidence: 99%

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Practical Applications of Mach Band Theory in Thoracic Analysis

Chasen

2001

Radiology

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In this review, routine radiographs with computed tomographic (CT) correlation are used to demonstrate practical applications of Mach band theory in thoracic analysis. Mach bands represent optical psychophysiologic edge-enhancement phenomena produced by means of lateral inhibition in the retina of the eye. Visualization of Mach bands depends on a set of variables that involve primarily the contour and optical density of a structure at an interface relative to that of its surround. On the basis of their appearance, the bands are defined as positive (white) or negative (black). The concept of Mach bands contributes to a greater understanding of three-dimensional structures projected onto two-dimensional routine radiographic images of the thorax. Mach bands can help differentiate normal from abnormal anatomy and thus increase the diagnostic yield from such images. Mach bands can be seen on images that use transmitted or reflective light, including CT scout images (topograms) of the thorax.

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Section: The Paraspinal Linesupporting

confidence: 62%

Section: The Paraspinal Linementioning

confidence: 99%