| 1. |
- Knutsson, Hans E., et al.
(author)
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Ectomography. A New Radiographic Reconstruction Method : I. Theory and Error Estimates
- 1980
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In: IEEE Transactions on Biomedical Engineering. - 0018-9294 .- 1558-2531. ; BME--27:11, s. 640-645
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Journal article (peer-reviewed)abstract
- Radiographic technology has advanced considerably during the last years with the advent of reconstruction techniques allowing visualization of slices through the body. In spite of the advantage of computed tomography compared to conventional radiographic methods, there are still some shortcomings with the method If a different section of the body is desired, another recording has to be made, the width of the dice reconstructed is fixed, and a full 1800 view angle is required.
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| 2. |
- Petersson, Christer U., et al.
(author)
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Ectomography. A New Radiographic Reconstruction Method : II. Computer Simulated Experiments
- 1980
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In: IEEE Transactions on Biomedical Engineering. - 0018-9294 .- 1558-2531. ; BME--27:11, s. 649-655
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Journal article (peer-reviewed)abstract
- In a special radiographic process, ectomography, an image of a slice is produced by simple summation of a set of specially filtered component images, of which each represents one of at least 60 different projections of the object. After being digitized, they are stored, filtered, and summed in a computer. Images representing any slice of any thickness in the object may be produced from the same set of component images. All details within the slice are pictured correctly while details outside are almost completely eliminated.
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| 3. |
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| 4. |
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| 5. |
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| 6. |
- Sörnmo, Leif, et al.
(author)
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A method for evaluation of QRS shape features using a mathematical model for the ECG
- 1981
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In: IEEE Transactions on Biomedical Engineering. - 1558-2531. ; 28:10, s. 713-717
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Journal article (peer-reviewed)abstract
- Automated classification of ECG patterns is facilitated by careful selection of waveform features. This paper presents a method for evaluating the properties of features that describe the shape of a QRS complex. By examining the distances in the feature space for a class of nearly similar complexes, shape transitions which are poorly described by the feature under investigation can be readily identified. To obtain a continuous range of waveforms, which is required by the method, a mathematical model is used to simulate the QRS complexes.
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