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南京华东电子管厂和山东省医学科学研究所,设计试制了镍阴极食管微型腔内计数管,于1969年12月定型生产。用方法:检查前24小时,给病人静脉或肌肉注射无载体磷~(32)酸氢二钠300微居里左右。检查时病人取牛坐位,将腔内计数管用液体石蜡润滑后,在病人吞咽动作的配合下,经口腔或鼻腔送入食管到相当于贲门部位,距门齿45～50厘米处。由下向上每1厘米左右逐点计数,计数高的部位可以间隔0.5厘米计数一次,以免遗漏微小病变。判断标准:从食管的正常部位取三点以上的平均计数率作为分母,病变部位各点平均计数卒为分子,比值超过1.3倍为恶性,1.3倍以下为良性。临床检查:临床上共检查疑似食管癌病人50例,有完整材料,可与x线、食管镜、
Nanjing East China Electron Tube Factory and Shandong Institute of Medical Sciences designed and trial-produced nickel cathode esophageal micro-cavity counter tubes, which were finalized in December 1969. Method of use: In the first 24 hours of examination, the patient is intravenously or intramuscularly injected with 300 microcuries of unsupported sodium phosphate (32) disodium hydrogen. During the examination, the patient takes the cow seat and lubricates the cavity counting tube with liquid paraffin. After the swallowing action of the patient, the oral cavity or nasal cavity is fed into the esophagus to the site equivalent to the cardia, 45 to 50 cm from the incisor. Count from point to point every 1 centimeter from the bottom to the top, count the height of the parts can be counted once every 0.5 centimeters, so as not to miss minor lesions. Judgment criteria: Take the average counting rate of more than three points from the normal part of the esophagus as the denominator, and the average count of the lesions at each point of the stroke is a molecule. The ratio of more than 1.3 times is malignant, and 1.3 times or less is benign. Clinical examination: A total of 50 patients with suspected esophageal cancer were examined clinically and had complete materials, which could be combined with x-ray and esophagoscope.