Looking for classes? Ksquare Career Institute, Bengaluru →
Consider the following statements about biomedical technologies,
(i) During open heart surgery blood is circulated in the heart-lung machine
(ii) Blockage in coronary arteries is removed by angiography
(iii) Computerised Axial Tomography (CAT) shows detailed internal structure as seen in a section of body.
(iv) X-ray provides clear and detailed images of organs like prostate glands and lungs
Which two of the above statements are correct?
(i) During open heart surgery blood is circulated in the heart-lung machine
(ii) Blockage in coronary arteries is removed by angiography
(iii) Computerised Axial Tomography (CAT) shows detailed internal structure as seen in a section of body.
(iv) X-ray provides clear and detailed images of organs like prostate glands and lungs
Which two of the above statements are correct?
A
(i) and (iii)
B
(i) and (ii)
C
(ii) and (iv)
D
(iii) and (iv)
Detailed Solution
(i) is correct: during open heart surgery the heart is stopped, and the blood is pumped and oxygenated outside the body by the heart-lung machine.
(iii) is correct: Computerised Axial Tomography (CAT or CT scan) uses X-rays and a computer to produce three-dimensional, cross-sectional images, showing the detailed internal structure as seen in a section of the body.
(ii) is not correct: angiography is only a diagnostic technique, in which a dye is injected to locate the blockage in the coronary arteries. The blockage is removed by angioplasty or bypassed by surgery.
(iv) is not correct: ordinary X-rays give clear images of dense structures like bones, but not clear and detailed images of soft organs such as the prostate gland; these need CT, MRI or ultrasound.
So the two correct statements are (i) and (iii).
(iii) is correct: Computerised Axial Tomography (CAT or CT scan) uses X-rays and a computer to produce three-dimensional, cross-sectional images, showing the detailed internal structure as seen in a section of the body.
(ii) is not correct: angiography is only a diagnostic technique, in which a dye is injected to locate the blockage in the coronary arteries. The blockage is removed by angioplasty or bypassed by surgery.
(iv) is not correct: ordinary X-rays give clear images of dense structures like bones, but not clear and detailed images of soft organs such as the prostate gland; these need CT, MRI or ultrasound.
So the two correct statements are (i) and (iii).