Ein neues Rechenverfahren zur radiologischen Ermittlung der totalen Lungenkapazität (TLC)

Abstract

Various radiological methods for estimating lung volume depend on anatomical correlation with the volume of the thorax. It is not possible to derive general factors for correcting these methods and the accuracy and reliability can be improved only by introducing individual corrections. It must also be remembered that radiometric calculations of gas volume and lung capacity depend on the assumption that there is a fixed relationship between these. This, however, is untrue for a whole series of patho-physiological circumstances. Because of these problems, we describe our own radiometric method.

Scoliosis curve correction, thoracic volume changes, and thoracic diameters in scoliotic patients after anterior and after posterior instrumentation

“…There are several methods to calculate thoracic volume using routine chest X-rays [4,7,9,10,13], and we used the formula proposed by Stolle at al. in 1985 [13]:…”

A Validation Study of an Innovative Medical Program to Reconstruct and Compute the Thoracic Volume

“…In addition, they carried out the thoracic volume reconstruction for 21 idiopathic scoliosis patients and then involved three users in executing a usability test. However, they did not describe or outline the boundary of the thoracic volume, and the same problem was also found in previous literature which used plain radiographs to measure the thoracic volume [4,[7][8][9]16,18]. Each of the above mentioned techniques has limitations.…”

“…Thoracic volume is a medical term, which is seldom mentioned or well defined in literature. Instead, most previous research studied the human lung volume, chest wall volume, or pulmonary function (total lung capacity) [3][4][5][6][7][8][9]. In 1933, Hurtado and Fray [3] mentioned the chest volume, also called thoracic capacity.…”

“…Similar to the lung volume calculation, the thoracic volume can be acquired by different imaging techniques, such as CT scans [11][12][13][14], optical reflectance system [6,15], and X-rays [4,[7][8][9][16][17][18]. Pierce et al [11] applied the CT-scan concept to calculate the volume inside the thoracic cavity.…”