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γ-Locator DXI

Broad energy range γ-probe

  • High-energy probe for 511 keV positron annihilation quanta as well as every low-energy radionuclide
  • Lightweight, compact probe head
  • Active electronic collimation
  • Spatial resolution independent of the energy
  • Custom-designed parameters
  • Easy to use
More information: download the flyer

0535  Verification certificate

[1] B. Meller et al.; High energy probe for detecting lymph node metastases with 18F-FDG in patients with head and neck cancer; Nuklearmedizin 2006; 45:153-159
[2] H. Lighvani et al.; Erste klinische Erfahrungen mit intraop. Detektion von traceranreichernden Tumoren mit einer elektronisch kollimie Hochenergie-Gammasonde; 47. Jahrestagung DGN, Leipzig 2009
[3] T. Krohn et al.; Elektronisch vs. mechanisch kollimierte Gammasonde zur intraoperativen Herdlokalisierung: Validierung mit 99mTc-und 18F im Phantom; 47. Jahrestagung DGN, Leipzig 2009
[4] M. Freesmeyer et al.; Intraoperative identification of neuroendocrine tumor diagnosed by 68Ga-DOTATOC PET but ndetectable by surgical palpation or conventional imaging - application of an electronically collimate high energy gamma probe; Nuklearmedizin 2009; 48:
[5] Hamid Reza Lighvani: First clinical experiences with the intraoperative detection of radiolabelled tumors with the aid of an electronically collimated high-energy gamma-probe; EANM Annual Congress, Barcelona, 2009
[6] J. R. Garcia et al.: A rescue surgery protocol radioguided by PET-CT. Preliminary results with Roll Technique and PET Probe; EANM Annual Congress, Barcelona, 2009
[7] E. Biggi et al.: Simultaneus detection of breast tumor resection margins and sentinel node biopsy using a high energy gamma probe; EANM Annual Congress, Vienna, 2010
[8] J.S. de Jong et al.: FDG-PET probe-guided surgery for recurrent retroperitoneal testicular tumor recurrences; Eur J Surg Oncol. 36 (2010) 1092-1095
[9] T. Krohn et al.: A phantom assessment of portable imaging and radio-guided surgery systems with technetium-99m and fluorine-18; Nuclear Medicine Communications 2012, 33:452�458

Electronic collimation in comparison with conventional collimation for PET-isotopes
γ-Locator DXI †
Conventional probe ‡
Technical specifications
Spatial resolution (FWHM) 122 keV to 662 keV: ≤ 10 mm*
Detectors CsI-Detectors with active electronic collimation, approx. 2,7 cm3 effective crystal volume. PIN-Diode readout.
Efficiency* Depending on the collimation (focus)
up to 8 cps/kBq for 18F-FDG or 68Ga
Power supply Rechargeable NiMH-batteries
Reserve batteries
Operating time: approx. 8h
Dimensions and weight Control unit:
Dimensions 14,5 x 23,5 x 28,5 cm3
Head: ø 23 mm, length 38 mm
Handhold: ø 27 mm, length 212 mm
Weight: approx. 330 g
† Measured data with 22Na source and γ-locator
‡ Simulated data for a single detector with identical size and 8 mm tungsten-collimator
* Measured with a point source at 10 mm distance