Medical Device & Diagnostic Industry Computed tomography is making a bid to recapture the high ground of medical imaging. A decade has passed since any significant changes have been made in either the technical or clinical capability of this technology, which some still refer to by the archaic acronym CAT (computerized axial tomography). Very soon, however, a new namemultislice CTwill enter the lexicon. This next-generation imaging technology creates slices of the body that are similar to ones first created some 25 years ago when CATs were introduced. The computer-generated slices cut across the body from side to side. But the way in which these machines make their slices, the number of slices they produce, and the resolution of the images are very different and promise to dramatically change the practice of medicine. Each of the new scanners being offered by GE Medical Systems, Siemens Medical Systems, and Picker International acquire four slices simultaneously, using advances in detectors, electronics, computer processing, and mechanical assemblies. A scanner to be produced by Toshiba is expected to offer approximately the same capabilities. Together, these developments could reinvigorate a lethargic marketplace. Over the past several years, CT sales have shifted decidedly from high-end systems toward competitively priced midrange units, which typically hover around $600,000 to $750,000. The year 1997 was a watershed for the industry. GE executives estimate that whereas 1997 sales in the premium end grew a mere 12%, sales in the low end rose 27% and midrange sales leaped 72%. The introduction of multislice CTs could rekindle interest in premium-performance scanners. "We've seen the awareness of CT grow exponentially in the entire medical imaging marketplace [since the launch of these multislice scanners]," says John Sandstrom, PhD, director of strategic marketing and CT for Siemens Medical Systems. "People want to know about multislice technology because
Products & Services
Tomography and Digital Imaging NDT Systems
Tomography and digital imaging NDT systems create 3D images of patients or products by capturing 2D cross-sectional images and applying mathematical or computed reconstruction techniques.
Scientific imagers are high resolution systems used to capture moving or still images.
Image scanners are devices that scan two-dimensional (2D) objects and convert them into digital images.
Scanning software is used with optical and document scanners or with other imaging equipment to digitize, create, edit and evaluate images.
X-ray sources are lamps that generate or produce X-rays, a form of electromagnetic radiation, for non-destructive testing (NDT) or inspection.
Topics of Interest
Medical Device & Diagnostic Industry Like voyagers looking at their world in pre-Columbian times, physicians have been trained to look at their patients as if they were flat. For more than a...
PATRICK J. LA RIVI RE
University of Chicago, Department of Radiology and Committee on Medical Physics, 5841 S. Maryland Ave., MG- 1037
Chicago, IL 60637, USA
Multiprocessing Architectures for Medical Imaging Systems The memory and I/O bandwidths of multicomputers make them the necessary choice for the most sophisticated imaging applications. Iain Goddard...
In the second part of computerized imaging involving Fourier-related transforms,
image reconstruction from projections including tomography is discussed. The
A PET/CT volume rendering created with free OsiriX software from the University Hospital of Geneva Switzerland fuses anatomic and metabolic information. Proponents of digital imaging have long...