Is the body box still the PFT gold standard? | 合法醫療器材資訊網

ThebodyboxisacompletepulmonaryfunctiontestingsolutionthatoffersTLCandFRCmeasurements.However,it'snotwithoutrestrictionsorshortcomings.Due ...

The objective of a PFT device is to measure how well lungs are working. Spirometry serves a critical purpose in measuring lung function (with regards to the volume that can be inhaled or exhaled). However, it is unable to measure total lung capacity (TLC) or functional residual volume (FRC).

The body box is a complete pulmonary function testing solution that offers TLC and FRC measurements. However, it’s not without restrictions or shortcomings. Due to its underlying methodology, these measurements are difficult to control and require extensive calibration and quality control.

The fundamental problem of the body box is that from pressure changes in the huge body box (>800 Liters) very small volumes are being determined (TLC ~8 Liters). Small temperature and pressure changes in the huge volume of 800L lead to larger errors in the determination of the much smaller lung volumes.

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