28-08-2017, 04:28 PM
Lung cancer is one of the neoplasms that cause deaths around the world. Non-invasive diagnostic techniques are a challenge for the early detection of cancer before it progresses to its later stages. Currently available diagnostic methods are expensive or invasive, and are not suitable for general screening purposes. Early identification not only helps detect the primary cancer, but also treats its secondary; Which creates a need for evidence easily applicable to screen people at risk. A detailed review of the various screening methods, including the latest trend in breath analysis using gold nanoparticles, is being studied here to identify cancer in its early stages. VAS-based respiratory biomarkers are used to analyze patients' exhaled breath. These biomarkers are used by chemistsistors coated with gold nanoparticles, which are found to be the most suitable technique for the early detection of lung cancer. This technique is highly accurate and is relatively easy to operate and tested in smokers and non-smokers. This review also gives as a schematic of the manufacture and operation of the Na-Nose device. Chemistsistors coated with gold nanoparticles show great potential in being a non-invasive and cost-effective diagnostic technique for the early detection of lung cancer.