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Biomedical Technologies
Concepts tested here
- Diagnostic and surgical technologies
All Questions
2008 AIPMT 1 question
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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) 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).