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of 165
pro vyhledávání: '"S.A. Larsson"'
Publikováno v:
Medical Physics. 34:877-888
Intensity modulated radiation therapy is rapidly becoming the treatment of choice for most tumors with respect to minimizing damage to the normal tissues and maximizing tumor control. Today, intensity modulated beams are most commonly delivered using
Publikováno v:
Radiation Protection Dosimetry. 115:503-507
A new thin transmission target technique for fast dose delivery using narrow scanned photon beams has been developed. High-energy, 50-100 MeV, electron beams of low emittance incident on thin low-Z targets produce narrow and intense high-energy brems
Autor:
A. Rillbert, P. Stenstrom, Frezghi Habte, S.A. Larsson, Christian Bohm, Abdelkader Bousselham
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 471:80-84
An optimized brain single photon emission computed tomograph (SPECT) camera is being designed at Stockholm University and Karolinska Hospital. The design goal is to achieve high sensitivity, high-count rate and high spatial resolution. The sensitivit
Publikováno v:
IEEE Transactions on Nuclear Science. 47:1655-1659
A fully digital data acquisition (D AQ) system for a cylindrical (NaI(Tl)) SPECT camera has been developed and tested. This system digitizes pulses of the scintillation events from the closest (7 or 5) PMTs to the interaction point. The digitized pul
Publikováno v:
IEEE Transactions on Nuclear Science. 45:1117-1121
Describes a modular data acquisition system that continuously samples shaped PMT pulses from a SPECT detector. The pulse waveform data are used by signal processors to accurately reconstruct amplitude and time for each scintillation event. Data acqui
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Publikováno v:
Transplantation. 65:411-415
Background. Monocytes are suggested to harbor latent cytomegalovirus (CMV) in peripheral blood, which concurs with the finding that all CMV-susceptible cells carry the CD13 surface molecule. Here, we investigated whether all latently and productively
Autor:
S. Kimiaei, S.A. Larsson
Publikováno v:
IEEE Transactions on Nuclear Science. 43:2239-2243
All examinations aiming at quantitative assessment of activity concentrations suffer from non-uniform attenuation due to inhomogeneous tissue density in various body regions. In such applications, a combined transmission tomography with SPECT has dem
Autor:
Suchitra Sumitran-karuppan, Barbro Lundh Rozell, Erna Möller, Cecilia Söderberg, Per Ljungman, S.A. Larsson
Publikováno v:
Transplantation. 61:600-609
Cytomegalovirus (CMV) infection has been suggested to be associated with certain autoimmune phenomena as well as with the development of chronic graft-versus-host disease (cGVHD) following allogeneic bone marrow transplantation. Earlier we found that
Publikováno v:
IEEE Transactions on Nuclear Science. 40:1117-1122
A method for combined single photon emission computed tomography (SPECT) and transmission tomography has been developed for application to parallel collimator geometry. The technique is based on a specially designed, shutter operated device with radi