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 percentages 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 below part a minute make radiological analysis extra actual. Blind gaps aren't any longer an incredible challenge, and all constructions, in particular within the lungs, may be pointed out and clinically determined. the sensible event of a professional groupof medical researchers and physicists is now made to be had during this book.
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Extra info for Advances in CT II: 2nd European Scientific User Conference SOMATOM PLUS, Berlin, March 1992
3. 4. 5. 6. Costello P, Anderson W, Blume D (1991) Pulmonary nodule: evaluation with spiral volumetric CT. Radiology 179: 875-876 Kalender WA, Seissler W, Klotz E, Vock P (1990) Spiral volumetric CT with single-breath-hold technique and continuous transport and scanner rotation. Radiology 176: 181-183 Shaffer K, Pugatch RD (1989) Small pulmonary nodules: dynamic CT with single-breath-hold technique. Radiology 173: 567-568 Siegelmann SS, Khouri NF, Lei FP, Fishman EK, Braverman RM, Zerhouni EA (1986) Solitary pulmonary nodules: CT assessment.
One of the two angiographically occluded ACVG was judged occluded on CT, too; the other was judged as patent (specificity 50 %). Of the 52 ACVG 23 (44 % ) were demonstrated on three or more consecutive scans and 47 (90%) ACVG on two scans. The typical aspect of the proximal and distal part of a left coronary ACVG in volume scanning images is shown in Fig. I. 2). Without knowledge of the number and types of vessels implanted, five ACVG not present in reality were judged as patent. In eight patients true patent grafts were mistaken for each other (19 %), but the identification of 34/42 (81 %) true patent ACVB was correct.
7-s scan, three lymph nodes are deteced in the right hilum at the same level and in the same patient as in a a b Fig. 4. 0-s scan, no lymph nodes are detected. The adjacent slices were also negative for hilar lymph nodes. 7-s scan, one lymph node in the right hilum is detected at the same level and in the same patient as in a. 0 s both in terms of border sharpness and tissue differentiation (compare a with of Figs. 1-6). With shorter scan times, we found better morphological differentiation, but the images showed a clearly increased graininess.