title: First use of mini gamma cameras for intra-operative robotic SPECT reconstruction.
abstract: Different types of nuclear imaging systems have been used in the past, starting with pre-operative gantry-based SPECT systems and gamma cameras for 2D imaging of radioactive distributions. The main applications are concentrated on diagnostic imaging, since traditional SPECT systems and gamma cameras are bulky and heavy. With the development of compact gamma cameras with good resolution and high sensitivity, it is now possible to use them without a fixed imaging gantry. Mounting the camera onto a robot arm solves the weight issue, while also providing a highly repeatable and reliable acquisition platform. In this work we introduce a novel robotic setup performing scans with a mini gamma camera, along with the required calibration steps, and show the first SPECT reconstructions. The results are extremely promising, both in terms of image quality as well as reproducibility. In our experiments, the novel setup outperformed a commercial fhSPECT system, reaching accuracies comparable to state-of-the-art SPECT systems.
authors: Computer Aided Medical Procedures (CAMP), Technische Universitit Miinchen, Germany.
authors: Philipp
authors: P
authors: Matthies
authors: Computer Aided Medical Procedures (CAMP), Technische Universitit Miinchen, Germany.
authors: Kanishka
authors: K
authors: Sharma
authors: Computer Aided Medical Procedures (CAMP), Technische Universitit Miinchen, Germany.
authors: Ash
authors: A
authors: Okur
authors: Computer Aided Medical Procedures (CAMP), Technische Universitit Miinchen, Germany.
authors: José
authors: J
authors: Gardiazabal
authors: Computer Aided Medical Procedures (CAMP), Technische Universitit Miinchen, Germany.
authors: Jakob
authors: J
authors: Vogel
authors: Computer Aided Medical Procedures (CAMP), Technische Universitit Miinchen, Germany.
authors: Tobias
authors: T
authors: Lasserl
authors: Computer Aided Medical Procedures (CAMP), Technische Universitit Miinchen, Germany.
authors: Nassir
authors: N
authors: Navab
mesh_terms: D000465:Algorithms; D004867:Equipment Design; D019544:Equipment Failure Analysis; D015902:Gamma Cameras; D006801:Humans; D007089:Image Enhancement / Q000295:instrumentation* / Q000379:methods*; D008904:Miniaturization; D015203:Reproducibility of Results; D012371:Robotics / Q000295:instrumentation* / Q000379:methods*; D012680:Sensitivity and Specificity; D025321:Surgery, Computer-Assisted / Q000295:instrumentation* / Q000379:methods; D018511:Systems Integration; D015899:Tomography, Emission-Computed, Single-Photon / Q000295:instrumentation*