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A novel fully integrated handheld gamma camera (359 visite) (PDF 110 visite)
Nuclear Instruments And Methods In Physics Research A, 2016 Jan; 832: 271-278.
Tipo di articolo: Full Length Journal Article,
Impact factor: 1.2
Impact factor a 5 anni: 1.102
Parole chiave: Nuclear Medicine Imaging; Intraoperative Gamma Camera; Portable Gamma Camera; Handheld Scintigraphic Device; Silicon Photomultiplier,
In this paper, we present an innovative, fully integrated handheld gamma camera, namely designed to gather in the same device the gamma ray detector with the display and the embedded computing system. The low power consumption allows the prototype to be battery operated.
To be useful in radioguided surgery, an intraoperative gamma camera must be very easy to handle since it must be moved to find a suitable view. Consequently, we have developed the first prototype of a fully integrated, compact and lightweight gamma camera for radiopharmaceuticals fast imaging. The device can operate without cables across the sterile field, so it may be easily used in the operating theater for radioguided surgery.
The prototype proposed consists of a Silicon Photomultiplier (SiPM) array coupled with a proprietary scintillation structure based on CsI(Tl) crystals. To read the SiPM output signals, we have developed a very low power readout electronics and a dedicated analog to digital conversion system. One of the most critical aspects we faced designing the prototype was the low power consumption, which is mandatory to develop a battery operated device.
We have applied this detection device in the lymphoscintigraphy technique (sentinel lymph node mapping) comparing the results obtained with those of a commercial gamma camera (Philips SKYLight). The results obtained confirm a rapid response of the device and an adequate spatial resolution for the use in the scintigraphic imaging.
This work confirms the feasibility of a small gamma camera with an integrated display. This device is designed for radioguided surgery and small organ imaging, but it could be easily combined into surgical navigation systems.
*** IBB - CNR ***
Biostructure and Bioimaging Institute (IBB), National Research Council of Italy (CNR), Rome, Italy
University of Rome “La Sapienza”, S. Andrea Hospital, Rome, Italy
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