| 摘要 |
The present invention describes an apparatus for penetrating radiation measurements on a biological tissue sample, the apparatus comprises: a biological tissue sample locator; a source of penetrating radiation; a collimator configured, in use, to direct radiation from the source into a vertical beam directed at the tissue sample locator; means for scanning the beam, in use, along a sample located by the tissue sample locator; and at least one detector for detecting radiation scattered by the sample; the detector being collimated so that only radiation scattered at one or more pre-determined angles is detected; and the detector being divided into multiple segments arranged in a longitudinally extending array, the collimation of the detector being such that each segment detects radiation scattered at a single pre-determined angle, whereby each segment maps onto a discrete vertical location in the plane of the radiation beam. |
