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(Single Best Answer) Question 51: The most radiosensitive tumour among the following is ?

A) Bronchogenic carcinoma
B) Carcinoma parotid
C) Dysgerminoma
D) Osteogenic sarcoma
Answer (Select an option above to get the answer):

(Single Best Answer) Question 52: All of the following modalities can be used for in-situ ablation of liver secondaries, except ?

A) Ultrasonic waves
B) Cryotherapy
C) Alcohol
D) Radiofrequency
Answer (Select an option above to get the answer):

(Single Best Answer) Question 53: All of the following radioisotopes are used as systemic radionucleide, except ?

A) Phosphorus-32
B) Strontium-89
C) Iridium-192
D) Samarium-153
Answer (Select an option above to get the answer):

(Single Best Answer) Question 54: Phosphorous-32 emits ?

A) Beta particles
B) Alfa particles
C) Neutrons
D) X-rays
Answer (Select an option above to get the answer):

(Single Best Answer) Question 55: Reduced salivary flow following irradiation is dose dependent. At what dose does the flow reach essentially zero ?

A) 4000 rads
B) 5000 rads
C) 6000 rads
D) 7000 rads
Answer (Select an option above to get the answer):

(Single Best Answer) Question 56: The technique employed in radiotherapy to counteract the effect of tumor motion due to breathing is known as ?

A) Arc technique
B) Modulation
C) Gating
D) Shunting
Answer (Select an option above to get the answer):

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