P型胃カメラの特徴

CHARACTERISTICS OF THE P TYPE OF GASTROCAMERA

　P型胃カメラは被検者の苦痛をできるだけ少なく，危険を伴わないようにと作られた．多数の被検者に能率よく，無麻酔でも検査できることが特徴である．Pはpopularからとったとされている．二回の試作と多数の臨床テストを経て今日のP型胃カメラ，すなわちGT-P_ⅠおよびGT-P_Ⅱが，昭和41年1月発表された（第1図）．

　The P type of gastrocamera, the thinnest and the most pliable of its kinds now available, is least troublesome to examinee. It is, therefore, applied to gastric mass survey without premedication, and to routine clinical examinations as well. Examiners are less apt to overlook gastric cancer, especially in its early stage.

　Its lack of angle device at the tip to keep its tube as pliable as possible is one of the drawbacks of this type of camera. It can not, therefore, cover such regions as the cardiac area, the posterior wall of the upper part of the corpus and the greater curvature of the lower body. With angle device attached, it would be less pliable and be more painful to the patient. It is the pending problem for GT-P to joint angle device and direct observations by fiber bundles without any loss of its pliability.