Method to correct the measurement of the bone density in a scanner using a calibration phantom having two inserts
US5222021A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1990 |
| Grant date | Jun 22, 1993 |
| Priority date | — |
| Expiry date | Jul 13, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/583
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The disclosure concerns X-ray scanners and, more particularly, a method to measure the bone density of a patient that takes his or her build into account. The disclosed method consists in performing a calibration of the bone density measurement by means of a phantom that simulates the patient's body and the vertebra an calibration phantom comprising a water insert and an insert with a high concentration of K.sub.2 HPO.sub.4. A measurement is made of the densities of several inserts of different concentrations and of the concentration of the water insert and of the K.sub.2 HPO.sub.4 high concentration insert, in the presence and without the presence of the bag of water, enabling the computation of corrections of the measured density of the patient's vertebra depending on his or her build.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.