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- TABLE 1
Main Physical Characteristics of an Intraoperative γ-Probe for Radioguided Surgery
Parameter Definition Related to Critical for Sensitivity (cps/kBq) Fraction of emitted radiation detected by the probe Geometry, thickness, effective Z, and density of the detector Detecting low-activity sources Spatial resolution (FWHM of PSF, mm) Ability to accurately define location of a source Material, size, and lateral shielding of the detector Localizing sources very close one to each other Energy Resolution (100 × ΔE/Eγ) FWHM of the bell-shaped photopeak in the energy spectrum Material of the detector (number of electrons produced by a radiation in the detector) Reducing spatial blurring and background due to scattered radiation -
FWHM = full width at half maximum height; PSF = point spread function; Eγ = energy photopeak; ΔE = relative energy.
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