declipse®SPECT is supporting radio-guided surgery with low energy radionuclides through 3D imaging and navigation during the intervention.
Example applications are:

Features of declipse®SPECT

alt Navigation - guidance for minimally invasive and assisted resection
alt Visual feedback - seeing the radioactivity within anatomical context
  High resolution - vivid image quality for detailed anatomical visualization
  3D - for guidance and complete resection feedback in all dimensions
alt Acoustic feedback - seamless integration into current clinical workflow procedure
alt Intraoperative - generating and seeing the information when it is needed
  Depth information - knowing how deep to go for direct and fast access
  Labeling of radioactivity - showing relative activity concentration in target to support decision making
  Flexible & portable device - optimal adaptation to your environment
alt Communication - digital data interface for collaborative challenges
  Documentation - video and picture documentation

Benefits of declipse®SPECT

declipse®SPECT offers guidance and application support in following applications:
SLNB Breast SLNB Melanoma SLNB Head and Neck ROLL Breast Laparascopy
SLNB Breast SLNB Melanoma SLNB Head & Neck RSL/ROLL Breast Laparascopic SLNB


3D image localization and depth information anytime during surgery to help guide proper and precise resection.1

Minimally invasive

Visualization and localization of sentinel lymph nodes in 3D supports image guidance for incision and resection enabling faster and minimally invasive surgeries.2

Quality assurance

Examination of structures directly after resection provides visual documentation that all sentinel lymph nodes have been successfully removed.1 Ex vivo imaging of radioactive labeled tumor specimens can aid in determining margins during surgery.

1. A. Schnelzer, A. Ehlerding, J. Ettl, T. Wendler, A. Buck, S. Paepke, M. Kiechle; Using freehand SPECT for 3D navigated radio-guided axillary sentinel lymph node biopsy and quality assurance in breast cancer surgery; Proceedings of the Annual San Antonio Breast Cancer Symposium (SABCC), San Antonio, Texas, USA, December 2010.

2. S. Naji, A. Tadros, J. Traub, C. Healy; Case report: Improving the speed and accuracy of melanoma sentinel node biopsy with 3D intra-operative imaging; Journal of Plastic, Reconstructive & Aesthetic Surgery (JPRAS), 64 (12), December 2012.

How to use declipse®SPECT in clinical routine

declipse®SPECT is designed for seamless integration into the surgical workflow. It is based upon existing gamma probes and thus does not interfering with their current usage. It provides images at the time of surgery and thus precise localization of the structures that need to be resected.

The system is positioned next to the operating room table and its portable cart allows flexible positioning without interference of other instruments. The intuitive user interface that is controlled by a large image viewing touch screen monitor enables direct mapping, easy access and resection control during SLNB in breast, melanoma and head & neck as well as in the ROLL and RSL technique with a seamless integration in the clinical workflow.

See how to use declipse®SPECT video:

declipse®SPECT Technology

declipse®SPECT enables for the first time worldwide intra-operative 3-D reconstruction of radioactivity distribution based on handheld gamma probe detectors. This solution extends the services of nuclear medicine from pure diagnosis towards localization and guidance during interventions, providing an innovative and powerful tool for quality assurance in radio guided surgery. declipse®SPECT enables minimally invasive resection procedures thanks to its 3-D imaging properties and ensures high quality standards during procedure in three dimensions.


declipse®SPECT is a SPECT imaging device based on a handheld gamma probe reported as freehandSPECT imaging in the literature [Wendler2010]. In contrast to traditional SPECT imaging solutions, declipse®SPECT does not rely on a gantry mounted gamma camera rotating around the patient, but a handheld gamma probe extended by a 3-D tracking system. A scan of 1-2min around the patient from anterior-posterior and lateral directions enables a 3-D reconstruction of the radioactive distribution in the target region with a spare set of projection data.




declipse®SPECT currently supports all low energy radionuclides. Tc99m, which is currently the most commonly used radionuclide for SLN imaging, is generating full 3-D images with a resolution of 5mm in all three dimensions as deep as 7cm from the surface.




An optical infra-red camera ensures sub millimeter precise localization of patient and gamma probe in space. Synchronized readings of gamma detector and navigation system enable a reconstruction in the same coordinate system as well as registration-free navigation, i.e. showing correlation of the imaging data with respect to any surgical instrument, the basis for image guidance.



An integrated video camera provides a direct correlation of the 3-D images projected onto the image plane. This provides gamma camera images from different viewpoints with direct anatomical correlation through overlay onto the optical image. This innovative technology of augmented reality enables direct referencing and visualization of the activity onto the real-time video of the patient. The advantage over standard monitor based image viewing is the direct overlay and anatomical correlation for intuitive orientation, localization and resection of radioactively marked structures. Thus any standard surgical instrument is guided to the region of interest without any modification.


Technical Specifications

General Specifications
Electrical safety class I
IP class 21
Applied part type B (gamma probe)
Dimensions (h x b x d) 1981 mm x 598 mm x 1620 mm
Power cable length 5 m
Power cable plug NEMA 5 (Type B) / CEE 7/7 (Type E/F)
Power supply 115/230 VAC ± 10 %, 50/60 Hz
Power consumption 1000 Wp-p (when switching on) 450 VArms (steady operation)
Max. output impedance of mains 5 Ω
Fuses of power supply 2x 3.15A, T class fuses (UL, CSA or VDE/EN approved only)
Operating temperature 10 – 30 °C (30 – 86 °F)
Operating relative humidity 30 – 70 %
Operating atmospheric pressure 75 – 106 kPa
Weight with all components ca. 69 kg
Handle (sterile) length 100 mm
Handle (sterile) diameter 32.7 mm
Handle (unsterile) length 96 mm
Handle (unsterile) thickness 34 mm
Lens aperture of optical camera F1.4 – infinity (adjustable)
Focal length of optical camera 4 mm / 8 mm
Optical camera resolution 1032 x 778
Camera sensor size 1/3"
Optical video frame rate 30 fps
Color depth of optical image 12 bit
Image Specifications
Sampling frequency 20 Hz
Reconstruction time 30 – 90s
Voxel size 5 mm x 5 mm x 5 mm
Min. spatial resolution 5 mm x 5 mm x 5 mm
Max. volume of reconstruction 50 cm x 50 cm x 50 cm
Data transfer interface Data transfer over encoded USB stick / Ethernet / WLAN
Data storage DICOM images, PDF report, JPEG screenshots and optional AVI video

declipse®SPECT is compatible with several gamma probes and the specifications of the nuclear detector will
vary accordingly to the gamma probe being used. For more details on the nuclear detector, system
positioning and accessories specifications or if you want to know if your gamma probe is compatible
with the declipse®SPECT email here to This e-mail address is being protected from spambots. You need JavaScript enabled to view it


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