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Related Concept Videos

Lung Capacity01:47

Lung Capacity

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The air in the lungs is measured in volumes and capacities. Lung volume measures reflect the amount of air taken in, released, or left over after a lung function, like a single inhalation. Lung capacity measures are sums of two or more lung volume measures.
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The lungs are a pair of vital organs connected to the trachea via the left and right bronchi. The base of these organs meets the dome-shaped muscle known as the diaphragm. Encased by the pleurae, the lungs contact the mediastinum. The right lung is shorter yet wider, and has a larger volume than the left lung. The left lung has an indentation known as the cardiac notch. The superior region of the lungs is referred to as the apex, whereas the base is the lower region near the diaphragm. The...
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Respiratory volumes are crucial metrics, meticulously measured to quantify the air exchanged in and out of the lungs during various phases of the breathing cycle. These precise measurements are vital for assessing lung function, diagnosing respiratory conditions, and monitoring overall respiratory health. Each parameter provides specific insights into the mechanics of breathing and the functional capacity of the lungs.
Tidal Volume (TV) Tidal volume (TV) is the air inhaled or exhaled in a...
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Respiratory Capacities01:24

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Respiratory capacities are crucial indicators of lung function, representing the maximum amount of air an individual's respiratory system can handle during various breathing phases.
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Radiological Investigation II: MRI and Ventilation Perfusion Scan01:30

Radiological Investigation II: MRI and Ventilation Perfusion Scan

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Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
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Related Experiment Video

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A Standardized Method for Measuring Internal Lung Surface Area via Mouse Pneumonectomy and Prosthesis Implantation
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The quantitative lung index: the left lung.

Eftichia V Kontopoulos1, Luis F Quintero2, Ramen Chmait1,3

  • 1The USFetus Research Consortium, Miami, FL, USA.

The Journal of Maternal-Fetal & Neonatal Medicine : the Official Journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians
|December 28, 2020
PubMed
Summary
This summary is machine-generated.

A new ultrasound measurement, the left quantitative lung index (QLI-L), assesses fetal left lung growth independently of gestational age. This tool helps characterize fetal lung development, though further clinical validation is needed.

Keywords:
Quantitative lung indexcongenital diaphragmatic hernialung-to-head ratiotracheal occlusion

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Area of Science:

  • Fetal medicine
  • Medical imaging
  • Quantitative sonography

Background:

  • Previous research established a gestational age-independent sonographic parameter for right fetal lung growth (QLI-R).
  • Assessing fetal left lung growth independently of gestational age presents a clinical challenge.

Purpose of the Study:

  • To develop a novel sonographic parameter, the left quantitative lung index (QLI-L), for assessing fetal left lung growth.
  • To establish a method for evaluating fetal lung development that is independent of gestational age.

Main Methods:

  • Derived the QLI-L using established formulas for fetal head circumference (HC) and left lung base area (LA).
  • Utilized corresponding percentile data in the QLI-L derivation.

Main Results:

  • The 50th percentile of QLI-L remained stable around 1.0 between 16 and 32 weeks of gestational age.
  • Defined a small left lung as a QLI-L value below 0.5 (less than the 1st percentile).

Conclusions:

  • The QLI-L effectively describes fetal left lung growth independent of gestational age.
  • Further clinical studies are required to confirm the accuracy of QLI-L in characterizing fetal left lung growth.