科學(xué)家已經(jīng)設(shè)計(jì)出一種使用計(jì)算機(jī)判斷左心房或者左心室狀況的方法。計(jì)算機(jī)從X線影像上勾勒出心臟形狀，從心腔壁運(yùn)動狀況來判斷心臟功能。既往描繪心臟輪廓都是手工完成的。而新方法技術(shù)不僅精確而且省時省力。

在進(jìn)行心臟導(dǎo)管插入手術(shù)時，必須得到冠狀動脈和左側(cè)心腔（心房與心室）的X線影像。從這些影像的心室壁運(yùn)動情況來判斷心臟的情況，通常都是描繪出心腔在血液最大充盈時相與最小充盈時相的輪廓來完成的。從這些結(jié)果就可以判斷出心臟的總體功能，以及局部的心腔壁的運(yùn)動情況。

但是手工描繪心臟輪廓是一項(xiàng)相當(dāng)耗時的過程，并且由于不同觀察者之間的許多差異而影響最終結(jié)論。荷蘭Leiden大學(xué)醫(yī)學(xué)中心（Leiden University Medical Center，Leiden，The Netherlands）的研究人員設(shè)計(jì)了一個統(tǒng)計(jì)學(xué)模型，并將其應(yīng)用到了軟件之中。

使用該軟件的時候，通過簡短的人機(jī)對話，操作者手工定義主動脈位置以及心臟的最低點(diǎn)，然后計(jì)算機(jī)就自動描繪心臟循環(huán)兩個時相的輪廓。然后得出心腔壁局部運(yùn)動情況與心臟總體功能。這些信息對于醫(yī)生做出正確診斷具有極其重要的意義，同時也是進(jìn)行冠狀動脈搭橋術(shù)的外科醫(yī)生所必需的。

根據(jù)這項(xiàng)研究，Medis醫(yī)學(xué)影像系統(tǒng)公司(Leiden, The Netherlands)研發(fā)了這項(xiàng)應(yīng)用軟件系統(tǒng)，該公司也參與了這項(xiàng)研究項(xiàng)目。

Computer Determines Heart Problems From X-Ray Images

Scientists have developed a way in which a computer can read the condition of the left heart chamber or ventricle. The computer sketches the shape of the heart on the x-ray images, and from the wall motion it determines the heart’s condition. Heart contours had to previously been drawn by hand. The new technique appears to be accurate and saves time.

Scientists have developed a way in which a computer can read the condition of the left heart chamber or ventricle. The computer sketches the shape of the heart on the x-ray images, and from the wall motion it determines the heart’s condition. Heart contours had to previously been drawn by hand. The new technique appears to be accurate and saves time.

During a cardiac catheterization procedure, radiographs of the coronary arteries and of the left heart chamber are obtained. The condition of the heart can be determined by assessing the wall motion of the ventricle from these images, which is typically done by outlining the contours of the heart chamber at the maximal filling phase of the heart chamber with blood and at the minimal filling phase. From these results, the overall function of the heart can be determined, as well as the regional wall motion.

Sketching the contours of the heart, however, is a time-consuming process, which is also hindered by a large number of variabilities between observers. The researchers, from Leiden University Medical Center (Leiden, The Netherlands), created a statistical model that was then translated into a software application.

After a little interaction from the user with the manual definition of the aorta position and the lowest point of the heart, the computer automatically determines the contours in these two phases of the cardiac cycle. Then, the regional wall motion and the global function of the heart are derived. This information is of great significance for the correct diagnosis by the physicians and is also utilized by the surgeons in cases of bypass operations.

Based on this study, a software application has been developed by Medis Medical Imaging Systems (Leiden, The Netherlands), which also participated in the study.