Fig. 1
From: Gamma camera imaging characteristics of 166Ho and 99mTc used in Selective Internal Radiation Therapy
(a) Custom-made phantom with a body-shaped cross section, including parts of the ribs and spine with bone-equivalent tissue used for count rate performance measurements. (b) NEMA image quality phantom wrapped in cooling gel packs to mimic the attenuation and scattering conditions of an obese patient. The NEMA image quality phantom was used for quantitative evaluation of image quality and investigation of the influence of patient obesity. (c) CT image of the NEMA image quality phantom. Transverse slice at the level of the spheres. Background ROIs (blue) and lung insert ROI (red)