CAJ | 학술논문

目的应用计算机软件进行内镜下病灶桶形畸变的校正及面积的测量,以寻求内镜下病灶面积准确、客观及简便的测量方法.方法内镜下桶形畸变的校正采用Panaroma tool软件,病灶面积及相对测量误差的处理应用Image J软件:(1)体外试验内镜下病灶面积的计算机软件测量法,首先确立Panorama tool纠正桶形畸变的校正系数,以达到最小测量误差,第二步观察胃镜镜头与图像之间物距的变化对测量的影响.(2)利用计算机软件测量法测量胃溃疡患者的病灶面积,并与不同测量方法进行比较.结果 (1)当选择Panaroma tool校正系数为0.1时,内镜下桶形畸变校正后测量误差最小(3.76±2.13)％；(2)桶形畸变未校正前,随着胃镜镜头与图片距离的增加,测量相对误差逐渐增加；而通过Panaroma tool校正后,不同物距之间相对测量误差差异无统计学意义(P=0.141)；(3)对50例胃溃疡病灶进行测量,结果显示Panorama tool联合Image J软件处理后,所得溃疡面积(35.0±5.0)mm2大于传统公式法计算得出的面积(29.1 ±4.1)mm2,两者差异有统计学意义(P=0.000),相关系数为0.988.结论应用计算机图像分析法有望成为内镜下病灶面积测量相对准确,客观简便的方法.
목적 응용계산궤연건진행내경하병조통형기변적교정급면적적측량,이심구내경하병조면적준학、객관급간편적측량방법.방법 내경하통형기변적교정채용Panaroma tool연건,병조면적급상대측량오차적처리응용Image J연건:(1)체외시험내경하병조면적적계산궤연건측량법,수선학립Panorama tool규정통형기변적교정계수,이체도최소측량오차,제이보관찰위경경두여도상지간물거적변화대측량적영향.(2)이용계산궤연건측량법측량위궤양환자적병조면적,병여불동측량방법진행비교.결과 (1)당선택Panaroma tool교정계수위0.1시,내경하통형기변교정후측량오차최소(3.76±2.13)％；(2)통형기변미교정전,수착위경경두여도편거리적증가,측량상대오차축점증가；이통과Panaroma tool교정후,불동물거지간상대측량오차차이무통계학의의(P=0.141)；(3)대50례위궤양병조진행측량,결과현시Panorama tool연합Image J연건처리후,소득궤양면적(35.0±5.0)mm2대우전통공식법계산득출적면적(29.1 ±4.1)mm2,량자차이유통계학의의(P=0.000),상관계수위0.988.결론 응용계산궤도상분석법유망성위내경하병조면적측량상대준학,객관간편적방법.
Objective To explore an accurate,objective and simple method for barrel distortion correction and lesion area measurement by assistance of computer.Methods The software of Panaroma tool was employed to correct barrel distortion of endoscopy and Image J to measure lesion size and manage the relative measurement error.Computed measurement in vitro of lesion area was established,firstly,by identification of correction factor of Panorama tool to minimize measurement error; then by determination of influence of object distance change between the lens and the image.This measurement was used on patients with gastric ulcer for focal area.Results were compared with those of traditional method.Results Number of 0.1was determined to be the correction factor for barrel distortion of endoscopy.Prior to the correction of the barrel distortion,the relative error of measurement gradually increased with the increasing distance between endoscopy and the image.However,different object distances did not exert influence on the relative measurement error when barrel distortion was corrected by Panaroma tool ( P =0.141 ).A total of 50 foci of gastric ulcer were measured,results from combinational treatment of Panorama tool and Image J showed the areas (35.0 ± 5.0) mm2 were significantly larger than those determined by traditional method [ ( 29.1 ± 4.1 ) mm2,P =0.000 ],with a correlation coefficient of 0.988.Conclusion Computed endoscopic lesion measurement is a relatively accurate,objective and simple method to determine the area of gastric lesions.