Download PDF by Axel Bossuyt: Amplitude/phase patterns in dynamic scintigraphic imaging

By Axel Bossuyt

ISBN-10: 0898386098

ISBN-13: 9780898386097

ISBN-10: 9024725240

ISBN-13: 9789024725243

ISBN-10: 9024727685

ISBN-13: 9789024727681

ISBN-10: 9400960093

ISBN-13: 9789400960091

ISBN-10: 9400960115

ISBN-13: 9789400960114

Traditional nuelear medieine proeedures examine the dis tribution of radiolabelled eompounds (radiopharmaeeutieals) within the physique below physiologieal in addition to below pathologieal eonditions. Beeause in their skill to visua lise and to quantify the distribution of radiopharmaeeuti eals in the physique through exterior deteetors, nuelear medieine teehniques are basieally non invasive and funetion orientated. The spatial version of the traeer distribution within the box of view, or the ehange in distribution in the course of a time period are interpreted as representing speeifie phy siologie or pathophysiologie tactics. As eompared to different diagnostie imaging teehniques, the spatial solution of seintigraphie photographs is quite terrible, their temporal resolu tion is nice. Faetors that may as a result verify the last word diag nostie worth of a seintigraphie learn inelude 1. The speeifieity of the labelled eompounds for the method lower than research, 2. The answer in time and area of the instrumentation, and its skill of measuring quantitatively tissue aetivity eoneentrations, three. The formula of physiologieal or pathophysiologieal versions from whieh the distribution of the traeer ean be predieted. 2 whereas analyzing nuclear medication facts, the interrelations among those components should still completely stay lower than consi deration. The generalised use of minicomputers has led to significant advances in details processing in nuclear medication imaging strategies. principal to this is often picture digitisation.

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For studies such as first transit cerebral blood flow or renal blood flow, the approximation of the tracer passage by a sinusoidal function is limited by the change in bolus shape as it passes through various capillary beds. Even then the amplitude/phase display allows a more accurate selection of regions of interest for subsequent analysis. 28 REFERENCES 1. 2. 3. 4. 5. 6. 7. 8. E. et al. 1975. Dynamie time-dependant analysis and statie threedimensional imaging proeedures for computer assisted CNS studies.

4. 5. 6. 7. 8. E. et al. 1975. Dynamie time-dependant analysis and statie threedimensional imaging proeedures for computer assisted CNS studies. In : Non Invasive Brain Imaging. A. (Eds), 45. D. 1975. Benign superior vena eava syndrome. Chest 69, 32. R. 1969. Te-99m superior vena eavography. Radiology 92, 913. , Fruhling J. Radionuelide venography in the evaluation of superior vena eava syndrome. 1981. Clin. Nuel. Med. 6, 177. , Lepoudre R. et al. 1979 The temporal Fourier Transform applied to funetional isotopie imaging.

AAB consisted of slow, deep inspirations and prolonged expirations against pursed lips. Inspiration was accomplished by preferential diaphragmatic contraction as indicated by enhanced outward movement of the abdominal wall. Towards the end of expiration, active abdominal muscle contraction assisted lung deflation with the aim to reduce FRC. During data acquisition, the patient was breathing at the same frequency and tidal volume as during the first study, but using the AAB technique. This was don e in the presence of the physiotherapist who had been treating the patient and who presently coached his breathing.

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Amplitude/phase patterns in dynamic scintigraphic imaging by Axel Bossuyt

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