The following table or figure may be downloaded to PowerPoint for personal use in teaching and presentations. This feature is available to all subscribers to the journal.
You MUST read and follow the guidelines at Request to Reproduce AJR Content if you are distributing or using AJR content beyond academic use (limited distribution, non-revenue producing, or educational purposes).
(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.

Fig. 2A —Model for summation-of-areas technique. Computer drawing
depicts tumor, measured areas, and slice thickness of transverse CT scan.
Tumor volume is calculated as tumor volume = slice thickness (ST) x
summation of areas (A1, A2,..., and A10) of
tumor in each transverse scan.