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Dual X-ray absorptiometry
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10.1119/1.3696675
/content/aapt/journal/ajp/80/7/10.1119/1.3696675
http://aip.metastore.ingenta.com/content/aapt/journal/ajp/80/7/10.1119/1.3696675

Figures

Image of Fig. 1.
Fig. 1.

X-rays attenuated by adjacent slabs. The entering pencil of radiation is partially absorbed in the segment of length with linear absorption coefficient and in the segment of length with linear absorption coefficient .

Image of Fig. 2.
Fig. 2.

Grayscale bone image. The pixel on the left represents an area with no bone and increasing lightness corresponds to increasing bone density.

Image of Fig. 3.
Fig. 3.

K shell photon absorption. The incoming photon from the left is absorbed by a K shell electron.

Image of Fig. 4.
Fig. 4.

Photo-effect after absorption. The K shell electron is emitted from the atom and the nucleus recoils conserving momentum.

Image of Fig. 5.
Fig. 5.

Compton scattering. The incoming photon of energy interacts with the electron at rest. A photon of different frequency leaves and the electron scatters with momentum as well. Both energy and momentum are conserved.

Tables

Generic image for table
Table I.

X-ray mass attenuation coefficients (cm2/gm) from Ref. 6. Included are the NIST values of for fat (adipose tissue), cortical bone, and lean soft tissue. No error uncertainties are included in the NIST tables.

Generic image for table
Table II.

X-ray mass attenuation coefficients (cm2/gm) from Ref. 6. No error uncertainties are included in the NIST tables.

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/content/aapt/journal/ajp/80/7/10.1119/1.3696675
2012-06-18
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Dual X-ray absorptiometry
http://aip.metastore.ingenta.com/content/aapt/journal/ajp/80/7/10.1119/1.3696675
10.1119/1.3696675
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