G H Robeson | PubMed Health

PubMed1986

Three-dimensional interactive analysis of craniofacial and spinal computed tomography.

Three-dimensional interactive display of CT data from 23 cases of craniofacial and spinal pathology using a solids processing computer system was compared with conventional two-dimensional CT display. Three-dimensional display gave a more complete perspective of complex displacement patterns of facial and spinal fractures, and more clearly defined surface anatomy of osseous tumors and malformations. In 7 cases however, processing algorithms for three-dimensional display caused subtle anatomic features and non-displaced fractures to be obscured. These false negatives were clinically significant in cases of petrous bone pathology and in non-displaced spinal fractures that affected stability.

Head and Neck Neoplasms↗

PubMed1986

Acquisition of gamma camera and physiological data by computer.

We have designed, implemented, and tested a new Research Data Acquisition System (RDAS) that permits a general purpose digital computer to acquire signals from both gamma camera sources and physiological signal sources concurrently. This system overcomes the limited multi-source, high speed data acquisition capabilities found in most clinically oriented nuclear medicine computers. The RDAS can simultaneously input signals from up to four gamma camera sources with a throughput of 200 kHz per source and from up to eight physiological signal sources with an aggregate throughput of 50 kHz. Rigorous testing has found the RDAS to exhibit acceptable linearity and timing characteristics. In addition, flood images obtained by this system were compared with flood images acquired by a commercial nuclear medicine computer system. National Electrical Manufacturers Association performance standards of the flood images were found to be comparable.

Humans↗