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  • Title: 99Tcm-labelled chimeric human/mouse anti-granulocyte antibody bone marrow scintigraphy: a preliminary clinical study.
    Author: Higuchi T, Inoue T, Sarwar M, Oriuchi N, Karasawa M, Naruse T, Yamanaka H, Watanabe T, Chung JK, Endo K.
    Journal: Nucl Med Commun; 1998 May; 19(5):463-74. PubMed ID: 9853336.
    Abstract:
    Bone marrow scintigraphy using 99Tcm-labelled chimeric anti-granulocyte antibody (anti-NCA-95) was performed in 17 patients with haematological disorders and skeletal metastases. Chimeric anti-NCA-95 antibody (chNCA95 Ab, 0.2 mg) labelled with 444 MBq 99Tcm was administered to obtain bone marrow images 4 h post-injection. One week later, an 111In-chloride bone marrow scan was performed on nine patients with haematological disorders. Lumbar bone marrow-to-background (L/B) and ilium-to-background (I/B) uptake ratios were calculated for each scan. In six patients with suspected skeletal metastases, 99Tcm-HMDP bone scans were performed. No patient had any adverse reaction or any immune reaction over 20 weeks. In the patients with haematological disorders, the L/B and I/B ratios of the 99Tcm-chNCA95 Ab scan were 3.41 +/- 0.90 and 1.23 +/- 0.31, whereas those of the 111In-chloride scan were 1.58 +/- 0.32 and 1.00 +/- 0.32, respectively. In assessing findings of irregular central bone marrow uptake and peripheral expansion of the bone marrow, the 99Tcm-chNCA95 Ab scan was much better than the 111In-chloride scan. In the six patients with suspected skeletal bone metastases, three true-positive and two true-negative results were observed. This preliminary study has revealed that 99Tcm-chNCA95 Ab scanning is safe and useful in the diagnosis of haematological disorders and skeletal metastases.
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