Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
Which of the following statements about biomedical technologies are correct? (1) During open heart surgery, blood is circulated in the heart-lung machine (2) Blockage in coronary arteries is removed by angiography (3) Computerised Axial Tomography (CAT shows detailed internal structure as see- in a section of body (4) X-ray provides clear and detailed images of organs like prostate glands and lungsA) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: D
Solution :
It is almost impossible to repair intracardiac defects surgically, while the heart is still pumping. Therefore, many types of artificial lung machines have been developed to take the place of heart and lungs during the course of operation. Angiography is radiographic visualisation of blood vessels of a region/organ after injecting a radio opaque/contrast agent Computerised Axial Tomography (CAT) shows detailed internal structures as seen in a section of body (eg, iodine) or fluoroscopic chemicals. Digital subtraction angiography is an imaging technique that produces clear views of flowing blood in vessels and indicates the presence of blockage. X-rays have a remarkable ability to penetrate materials, which do not transmit visible light. X-rays imaging is commonly employed for diagnosing disease of heart, lungs and bones.
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