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The Albira Trimodal pre-clinical scanner comprises PET, SPECT and CT sub-systems and thus provides a range of pre-clinical imaging options. The PET component consists of three rings of single-crystal LYSO detectors with axial/transverse fields-of-view (FOVs) of 148/80 mm. The SPECT component has two opposing CsI detectors (100 × 100 mm2) with single-pinhole(More)
Physical background and rationale 131 I, Radioiodine The neutron rich iodine isotope 131 I, radioiodine, is used for the treatment of thyroid disorders. It decays to the stable isotope 131 Xe by emission of beta and gamma rays. Fig. S1 shows the main transitions with intensities of more than 1% per decay [1]. Fig. S1 Radioiodine decay scheme The energy(More)
INTRODUCTION The purpose of the EANM Dosimetry Committee Series on "Standard Operational Procedures for Pre-therapeutic Dosimetry" (SOP) is to provide advice to scientists and clinicians on how to perform pre-therapeutic and/or therapeutic patient-specific absorbed dose assessments. MATERIAL AND METHODS This particular SOP gives advice on how to tailor(More)
INTRODUCTION The level of administered activity in radionuclide therapy is often limited by haematological toxicity resulting from the absorbed dose delivered to the bone marrow. The purpose of these EANM guidelines is to provide advice to scientists and clinicians on data acquisition and data analysis related to bone-marrow and whole-body dosimetry. (More)
Meta-iodobenzylguanidine, or Iobenguane, is an aralkylguanidine resulting from the combination of the benzyl group of bretylium and the guanidine group of guanethidine (an adrenergic neurone blocker). It is a noradrenaline (norepinephrine) analogue and so-called "false" neurotransmitter. This radiopharmaceutical, labeled with 131I, could be used as a(More)
Primary liver cancers (i.e. hepatocellular carcinoma or cholangiocarcinoma) are worldwide some of the most frequent cancers, with rapidly fatal liver failure in a large majority of patients. Curative therapy consists of surgery (i.e. resection or liver transplantation), but only 10-20% of patients are candidates for this. In other patients, a variety of(More)
Carcinoma of the pancreas is an aggressive tumour with an extremely poor prognosis. Recent studies have shown that chemotherapy can improve survival as well as quality of life. Since the prognosis is generally poor, the identification of early responders to chemotherapy is important to avoid unnecessary toxicity in patients who are not responding. Response(More)
In this paper a novel, automated CT marker segmentation technique for image registration is described. The technique, which is based on analysing each CT slice contour individually, treats the cross sections of the external markers as protrusions of the slice contour. Knowledge-based criteria, using the shape and dimensions of the markers, are defined to(More)
An automated technique for marker-based image registration in radionuclide therapy is described. This technique is based on localization of the centroids of external markers and on establishing correspondence between the individual markers of the two studies to be registered. Localization of the centroids of markers relies on segmenting the markers using(More)
BACKGROUND The use of selective internal radiation therapy (SIRT) is rapidly increasing, and the need for quantification and dosimetry is becoming more widespread to facilitate treatment planning and verification. The aim of this project was to develop an anthropomorphic phantom that can be used as a validation tool for post-SIRT imaging and its application(More)