Advances in CT II: 2nd European Scientific User Conference by P. A. Gevenois, P. De Vuyst, M. Littani, J. Zanen, P. de

By P. A. Gevenois, P. De Vuyst, M. Littani, J. Zanen, P. de Franquen, J. C. Yernault (auth.), Professor Dr. R. Felix, Professor Dr. M. Langer (eds.)

Significant improvement made within the Siemens CT scanner SOMATOM PLUS have opened new chances for diagnostic imaging in computed tomography. Spiral CT with a continously rotating X-ray tube and synchronous desk increments for as much as 60 cm in under part a minute make radiological analysis extra actual. Blind gaps aren't any longer an immense challenge, and all buildings, particularly within the lungs, will be pointed out and clinically determined. the sensible event of knowledgeable groupof medical researchers and physicists is now made on hand during this book.

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Extra info for Advances in CT II: 2nd European Scientific User Conference SOMATOM PLUS, Berlin, March 1992

Example text

It often improves the CT demonstration of small nodules. Nevertheless, the quality of SVCT scans is not equivalent to that obtained with conventional CT in the demonstration of normal anatomy. We noticed that a pleural membrane and hypostasis were missing, and radiation-induced fibrosis became blurred. But these disadvantages never aggravated the diagnosis. A new application for SVCT may be the examination of patients with artificial respiration. It allows the acquisition of 12-24 scans while the artificial respiration is interrupted.

I. 2% cr values at defined HU intervals as indexes of emphysema (E), lung parenchyma (L) and fibrosis (F) in the patient with idiopathic fibrosis Table 3. 3 L. Pat. 1. 5) and the left-sided level at the carina show slightly elevated indexes of the lung parenchyma. 2. 87 (kPaxs). The histogram analysis shows a global decrease of the index of lung parenchyma and an increase of the index of fibrosis (Table 4). The regional frequency distribution of CT values demonstrates a continuous decrease of the index of lung parenchyma and a continuous increase of the fibrosis index from the upper to the lower level of the lungs (Figs.

S. CT histogram of 26 healthy normal subjects (mean ± SD) and of the patient with idiopathic fibrosis 5 cm above the carina Table 4. 2% Actual data Pat. 1. W. 3% 3. 13 (kPa x s). 5 % (Fig. 8, Tables 6,7). Rienmlilier et al. Table 5. ]. 0 I Pat. w. $$2 ·112 --- Mean -M2 .. ,2 ,,,"'" ± 1 SO ·782 ·712 -M2 .. ,2 ·582 -512 - - Pat. , Level: 5 em HU t Fig. 6. CT histogram of 26 healthy nomlal subjects (mean ± SD) and of the patient with Good· pasture's syndrome 5 cm above the carina % 25 r----~------~-------------------~ E --- Mean L ",,'''' ± 1 SO F - - Pat.

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