7割以上がSPECT装置2) (2020年) 1) Ichikawa H, et al. Current state of bone scintigraphy protocols and practice in Japan. AOJNMB 2020; 8(2):116-122. 2) ⽉刊新医療 2020; 47 (3): 122-127. 18F-FDG-PET/CTと同等の標準化を⽬指すべき⁉
1.0 1.2 0 1 2 3 4 5 6 Absolute recovery coefficient With ACSC Without ACSC 13 mm 22 mm 28 mm NB BM Normal bone 50 kBq/mL Bone Metastases 200 kBq/mL Background 8 kBq/mL 13 mm 22 mm 28 mm
6 8 0 10 20 30 40 Difference in SUV: Without minus With ACSC Average SUV with and without ACSC 0 10 20 30 40 0 10 20 30 40 With ACSC n = 300 y = 1.1001x r = 0.9268 p < 0.0001 4.099 0.917 -2.265 Without ACSC ⽐例誤差あり 60症例(L1~5︓インプラントなし)
With ACSC 60 - 65 0 10 20 30 0 10 20 30 Without ACSC With ACSC 55 - 60 0 10 20 30 0 10 20 30 Without ACSC With ACSC ≤ 55 y = 1.2211x r = 0.9731 p < 0.0001 n = 50 y = 1.1499x r = 0.9643 p < 0.0001 n = 65 n = 70 y = 1.2158x r = 0.9823 p < 0.0001 0 10 20 30 0 10 20 30 Without ACSC With ACSC > 70 0 10 20 30 40 0 10 20 30 40 Without ACSC With ACSC 65 - 70 n = 60 n = 55 Body Weight-based Coefficients ≤ 55 1.2158 55 - 60 1.2211 60 - 65 1.1499 65 - 70 1.0722 > 70 0.9626 y = 1.0722x r = 0.9824 p < 0.0001 y = 0.8513x r = 0.9626 p < 0.0001 体重クラス別のSUVの相関
30 Difference in SUV: BWC minus ACSC Average SUV ACSC and BWC 0 10 20 30 0 10 20 30 ACSC y = 1.0322x r = 0.9372 p < 0.0001 2.384 0.028 -2.328 n = 165 BWC BWC補正によるSUVの⽐較 33症例(L1~5︓インプラントなし)