Session+8+Supplement+v.1

Session+8+Supplement+v.1 - Reading Comprehension 2 Detail...

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Reading Comprehension 2 Detail Questions American scientists have developed a breath test capable of detecting lung cancer, even when the disease is in its early stages. The test utilizes a sensor capable of detecting chemical changes unique to the breath of individuals with lung cancer. As the patient breathes into the device, a series of colored dots, designed to change color upon chemically reacting with elements present in a lung cancer patient's breath, produce what researchers have referred to as a "gas fingerprint for lung cancer." According to scientists from the Cleveland Clinic, the chemical reactions occur because lung cancer cells emit chemicals, called volatile organic compounds or VOCs, which are then breathed out by those with the disease. The test's ability to detect lung cancer in its early stages is significant because the disease is often silent and difficult to diagnose in these stages, the point at which it can be most effectively treated. Currently, the only test capable of early detection is a type of X-ray known as spiral computed tomography or CT, but the machines are expensive, require specially trained experts to interpret their results, and also pick up non-cancerous lesions that are costly and risky to test. In contrast, the breath test is inexpensive and easy to read as the spots on the sensor change color according to the chemicals with which they come in contact. In a study of 143 individuals, some with various types of lung cancer, some with other lung diseases such as emphysema, and some healthy, the test accurately predicted the presence of lung cancer in just under three out of four participants already known to have lung cancer. Lead researcher Dr. Pater Mazzone and his team say the research could lead to an effective, inexpensive, non-invasive screening or diagnostic test for lung cancer, saving thousands of lives a year in the United States alone and revolutionizing the way cancer is detected. Last year, more than 174,000 Americans were diagnosed with lung cancer; of those 174,000, more than 160,000 died of the disease. Globally, lung cancer kills 1.3 million people annually.
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Reading Comprehension 2 Review: Mapping and Global Questions Main Idea Attitude Purpose Introduce a new lung cancer test and describe its advantages Entirely positive toward BT A new breath test capable of detecting lung cancer seems promising and could save many lives. P1. New breath test detects VOCs cancer cells during early stages of development. P2. Best to treat early. Only alternative (CT) has disadvantages. Breath test is better studies show could save 1000s.
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Reading Comprehension 2 Review: Mapping and Global Questions The primary purpose of the passage is to describe a new test capable of detecting lung cancer in its early stages and explain why this test is important explain the chemical reactions that enable a new breath test to detect lung cancer in its early stages describe how a new test accurately predicted the presence of lung cancer in just under three out of four individuals
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This note was uploaded on 01/25/2012 for the course GB 752 taught by Professor Unknown during the Fall '11 term at Loyola Maryland.

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Session+8+Supplement+v.1 - Reading Comprehension 2 Detail...

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