A flat-panel-based mini gamma camera for lymph nodes studies

We have developed a mini gamma camera based on the new “flat-panel”-type multianode PSPMT (H8500) from Hamamatsu Photonics. The gamma camera is intended for intra-surgical use. The dimensions of the camera are 14cm×7cm×7cm, with a useful field of view of 44mm, and a weight of 1.2kg. Its intrinsic re...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2004-07, Vol.527 (1-2), p.92-96
Main Authors: Fernández, M.M., Benlloch, J.M., Cerdá, J., Escat, B., Giménez, E.N., Giménez, M., Lerche, Ch.W., Martı́nez, J., Pavón, N., Sánchez, F., Sebastià, A.
Format: Article
Language:English
Subjects:
CsI(Na)
Gamma camera
NEMA
PSPMT
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Summary:We have developed a mini gamma camera based on the new “flat-panel”-type multianode PSPMT (H8500) from Hamamatsu Photonics. The gamma camera is intended for intra-surgical use. The dimensions of the camera are 14cm×7cm×7cm, with a useful field of view of 44mm, and a weight of 1.2kg. Its intrinsic resolution is better than 1.5mm and its energy resolution is about 13%, when using a CsI(Na) scintillating crystal. We present here the most important performance features of the camera and the image reconstruction process followed. Several clinical tests, on breast cancer and melanoma patients, were performed and compared with conventional cameras, to check the quality of the camera. For an administered dose of 3 mCi of 99mTc around the tumour, 1h before the lymphscintigraphy, we take high-quality images of the nodes in about 30s using a pinhole collimator.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2004.03.082