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- H J Zweifel, H F Reinhardt, G A Horstmann, and E Amrein.
- Fachbereich Medizintechnik, Interstaatliche Ingenieurschule Neu-Technikum Buchs.
- Ultraschall Med. 1990 Apr 1;11(2):72-5.
AbstractToday the accuracy of medical imaging systems lies between +/- 0.5 mm (CT) and +/- 2.5 mm (MRI). In neurosurgery the overall uncertainty may reach the dimension centimetres. A non-tactile ultrasonic measurement system is described that allows three-dimensional measurement with a theoretical accuracy of +/- 0.1 mm in a frequency range between 50 and 70 kHz. In practice the accuracy is better than +/- 1 mm with a repetition rate of 10 per second for the x,y,z-data sets.
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