7Leng S, Yu L, Wang J, et al. Noise reduction in spectral CT: reducing dose and breaking the trade-off between im- age noise and energy bin selection[J]. Med Phys, 2011, 38(9) :4946-4957.
8Lu P, Lin X Z, Li J, et al. Differentiation of small he- patic hemangioma from small hepatocellular carcinoma: recently introduced spectral CT method [J]. Radiology, 2011, 259(3) :720-729.
9Wu C W, Dionigi G, Lee K W, et al. Calcifications in thyroid nodules identified on preoperative computed tomo- graphy: patterns and clinical significance [ J ]. Surgery, 2012,151 (3) :464-470.
10Boll D T, Patil N A, Paulson E K et al. Focal cystic high-attenuation lesions: characterization in renal phantom by using photon-counting improved differentiation of le- sion composition [ J ]. Radiology, 2010, 254 ( 1 ) : 270- 276.
