The field of radiology dates back to 1896 with the first direct x-ray exposure of film by Roentgen. From the next 80 years the exposure of black-and-white film by x-rays, and later, from calculated images from CAT scans, ultrasound scans, and MRI scans would dominate the hardcopy world of medical imaging. The uses of color were largely experimental and limited until the development of real-time...

it to currently accepted delay estimators implementing a variety of sub-sample interpolation methods. Simulation results show that this algorithm significantly outperforms other algorithms in terms of jitter and bias over a broad range of conditions. For a 5 MHz, 50% bandwidth signal sampled at 40 MHz with a sub-sample delay of 0.3 samples, the bias of the proposed method is over 300 times smal...

In preparing this paper I realised that I would be speaking to a general audience and have therefore included a description of computed tomography (CT) and some of my early experiments that led up to the development of the new technique. I have concluded with an overall picture of the CT scene and of projected developments in both CT and other types of systems, such as Nuclear Magnetic Resonanc...

Application of the new nuclear magnetic resonance (NMR) method of fast scan proton imaging is described. Cross sectional proton scans of a human finger in vivo are measured and reveal considerable anatomical detail, particularly of the soft tissue regions. Imaging of tumour tissue is also briefly discussed.

We describe a graphical tool for analysis and visualization of three dimensional medical data. The application is intended to help physicians interpret the geometric structures of volumetric medical data and navigate through it easily. It combines novel approaches for segmenting the data and advanced techniques for visualizing the models which allow fast processing on a standard personal comput...

This paper starts with giving the medical imaging modalities that are in practical use and lists several of the new medical imaging modalities under development. The remainder of the paper is concentrated on progress in MR imaging, ultrasound imaging and x-ray CT imaging. These modalities are major radiological imaging tools, which will have growing significance in the next decade. They are sur...

The use of near-infrared light in functional medical imaging has gained increasing interest during recent years. Techniques using near-infrared light for imaging can be used to study, e.g., hemodynamic responses on the cortex. Brain activation measurements can be performed using, e.g., MEG or fMRI, which, however, require heavy instrumentation. In medical near-infrared imaging, the instrumentat...

Millions of women are screened for breast cancer every year, resulting in tens of millions of xray images that need to be read. The reading rooms that are used vary greatly, and many radiologists express concern about the conditions in either their workplace or the workplaces of their colleagues. Now that softcopy mammography screening is becoming commonplace, there is an opportunity to revisit...