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CT volumetry of the skeletal tissues
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10.1118/1.2337272
/content/aapm/journal/medphys/33/10/10.1118/1.2337272
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/33/10/10.1118/1.2337272

Figures

Image of FIG. 1.
FIG. 1.

(a) Transverse high-resolution ( in-plane resolution) CT slice of an excised femoral head and (b) the resulting contour file of the same segmented CT slice. Cortical bone is depicted in white while spongiosa is depicted in gray.

Image of FIG. 2.
FIG. 2.

(a) Transverse low-resolution ( in-plane resolution) CT slice of an excised femoral head and (b) the resulting contour file of the same segmented CT slice. Cortical bone is depicted in white while spongiosa is depicted in gray.

Image of FIG. 3.
FIG. 3.

Scatter plots and associated values for low-resolution volume estimates vs high-resolution volume estimates of (a) spongiosa volumes and (b) cortical bone volumes within the excised femoral heads. Dotted curves indicate a one-to-one correspondence between low- and high-resolution results. Note the difference in magnitude of the abscissa and ordinate scales between (a) and (b).

Image of FIG. 4.
FIG. 4.

Bland-Altman plots for (a) spongiosa and (b) cortical bone volumes estimated from the excised femoral head data. These plots compare the differences between the high-resolution and low-resolution volumes against their respective means.

Tables

Generic image for table
TABLE I.

Experimental design of inter-rater variability study where cell contents indicate the number of times rater segmented respective skeletal site. Dash (—) indicates that rater did not segment respective skeletal site.

Generic image for table
TABLE II.

Individual and mean percent errors (%) for high and low resolution volume estimates of one PVC pipe divided into an outer region (OR) and an inner region (IR). These percent errors below represent (Estimated volume—True volume)/True volume.

Generic image for table
TABLE III.

Individual and mean percent errors (%) for the high resolution (high) and low resolution (low) volume estimates obtained from the outer region of one PVC pipe viewed in three different orientations. These percent errors below represent (Estimated volume—True volume)/True volume.

Generic image for table
TABLE IV.

Individual and mean percent errors (%) for the high resolution (high) and low resolution (low) volume estimates obtained from the inner region of one PVC pipe viewed in three different orientations. These percent errors below represent (Estimated volume—True volume)/True volume.

Generic image for table
TABLE V.

Spongiosa and cortical bone volume estimates for both high resolution and low resolution CT image sets of femoral heads excised during THA surgery.

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/content/aapm/journal/medphys/33/10/10.1118/1.2337272
2006-09-25
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: CT volumetry of the skeletal tissues
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/33/10/10.1118/1.2337272
10.1118/1.2337272
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