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Cancer is the abnormal growth of cells due to the accumulation of changes in the genetic program that regulates the proliferation, growth and survival of cells. The impact of cancer on society is huge and hence, rapid, efficient and reliable detection is deemed essential in cancer management since it can lead to successful medical strategies, reduce treatment expenses and dramatically improve patient outcomes and survival rate. In this context, the barriers to cancer diagnosis and various approaches, including ultrasound, thermography, X-ray, tissue biopsy and optical techniques, pertaining to cancer detection are elucidated in this book chapter, with a special focus on how analytical techniques help clinicians detect cancers at an early stage. The merits and demerits of these analytical techniques for detecting cancers are also discussed in this book chapter. Finally, advances in biotechnology science that have contributed to the development of biosensors for cancer detection are outlined. |
