Which one of the following technique is safest for the detection of cancers?
Correct answer: A. Magnetic Resonance Imaging (MRI)
- A. Magnetic Resonance Imaging (MRI)
- B. Radiography (X-Ray)
- C. Computed tomography (CT)
- D. Histopathological studies
Explanation
The histopathological study is an invasive technique. Radiography and CT involve X-rays which are harmful. In MRI strong magnetic fields and nonionizing radiations are used to detect any physiological changes in the concerned tissue. Hence it is safe for the detection of cancers.
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Biological classification uses taxonomic ranks, binomial nomenclature and shared characteristics to organize life into kingdoms. The major groups include prokaryotes, protists, fungi, plants and animals, with comparisons based on cell type, cell wall, nutrition, body organization, reproduction and evolutionary relationships; prokaryotes lack a membrane-bound nucleus.
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