【摘 要】
：
CT has rather low accuracy for the follow-up of rumors after therapy. This study was to determine whether the diagnostic accuracy can be improved with 99mTc-HL9
【机 构】
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Department of Nuclear Medicine,School of Life Sciences
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CT has rather low accuracy for the follow-up of rumors after therapy. This study was to determine whether the diagnostic accuracy can be improved with 99mTc-HL91 SPECT in comparison with parallel results of CT imaging. Thirty patients of lung cancer or head & neck cancer, suspected of recurrences on clinical symptoms and CT during clinical follow-up after therapy, underwent 99mTc-HL91 SPECT. The radioactivity ratios of tumor to normal tissues (T/NT) were calculated using the region of interest technique. Results of 99mTc-HL91 SPECT were verified by histopathology. The 99mTc-HL91 average uptake ratios of T/NT in the group of recurrent lesions and non-recurrent lesions were 1.58±0.16 and 1.18±0.14, respectively. A significant difference was found between T/NT data of the two phases (t=4.87, P
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