3/25/2023 0 Comments Ipulse medical livia![]() ![]() Consequently, we have developed the first prototype of a fully integrated, compact and lightweight gamma camera for radiopharmaceuticals fast imaging. 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. The low power consumption allows the prototype to be battery operated. 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. Finally, this toolkit is an easy and robust tool to perform quality control on gamma cameras and PET cameras based on standard computation parameters, is free, run onĪ novel fully integrated handheld gamma camera The architecture of the program allows users to easily add any other specific quality control program. Besides, this program offers the possibility to save on HTML format the uniformity quality control results and a warning can be set to automatically inform users in case of abnormal results. All the control functions are included in a tool box which is a free ImageJ plugin and could be soon downloaded from Internet. The determination of spatial resolution (thanks to the Point Spread Function, PSF, acquisition) allows to compute the Modulation Transfer Function (MTF) in both modalities of cameras. spatial resolution and uniformity in a reconstructed slice and scatter fraction, are included. ![]() 2) For PET systems, three quality controls recently defined by the French Medical Physicist Society (SFPM), i.e. Based on standard parameters of quality control, this program includes 1) for gamma camera: a rotation center control (extracted from the American Association of Physics in Medicine, AAPM, norms) and two uniformity controls (extracted from the Institute of Physics and Engineering in Medicine, IPEM, and National Electronic Manufacturers Association, NEMA, norms). The program is based on the free application software ImageJ and can be easily loaded on any computer operating system (OS) and thus on any type of computer in every nuclear medicine department. The aim of this work was to develop a free open-source program (written in JAVA language) to analyze data for quality control of gamma cameras and PET cameras. Cuissard, Regis Martineau, Adeline Loonis, Pierre Couturier, OlivierĪcquisition data and treatments for quality controls of gamma cameras and Positron Emission Tomography (PET) cameras are commonly performed with dedicated program packages, which are running only on manufactured computers and differ from each other, depending on camera company and program versions. Quality controls for gamma cameras and PET cameras: development of a free open-source ImageJ programĬarlier, Thomas Ferrer, Ludovic Berruchon, Jean B. Its gives a practical solution to the CACAO reconstruction problem. This work shows that a simple and fast algorithm, based on a diagonal dominant approximation of the problem can be derived. A dedicated algorithm including shift and sum, deconvolution, parabolic filtering and rotation is described. It uses larger and longer holes, having an added linear movement at the acquisition sequence. The computer aided collimation gamma camera is aimed at breaking down the resolution sensitivity trade-off of the conventional parallel hole collimator. ![]() National Electrical Manufacturers Association performance standards of the flood images were found to be comparable.Ī fast algorithm for computer aided collimation gamma camera (CACAO) In addition, flood images obtained by this system were compared with flood images acquired by a commercial nuclear medicine computer system. Rigorous testing has found the RDAS to exhibit acceptable linearity and timing characteristics. The RDAS can simultaneously input signals from up to four gamma camera sources with a throughput of 200 kHz per source and from up to eight physiological signal sources with an aggregate throughput of 50 kHz. ![]() This system overcomes the limited multi-source, high speed data acquisition capabilities found in most clinically oriented nuclear medicine computers. We have designed, implemented, and tested a new Research Data Acquisition System (RDAS) that permits a general purpose digital computer to acquire signals from both gamma camera sources and physiological signal sources concurrently. Hack, S N Chang, M Line, B R Cooper, J A Robeson, G H EPA, Research Triangle Park, NC 27711 USA and 2Curriculum in Toxicology, Unive.Īcquisition of gamma camera and physiological data by computer. COMPUTER ANALYSIS OF PLANAR GAMMA CAMERA IMAGESġExperimental Toxicology Division, National Health and Environmental Effects Research Laboratory, U.S. ![]()
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