9) MRI
technique used to overcome problem of respiratory motion is all except
a)Spin-echo sequence[SE]
a)fast low-angle shot [FLASH]
c) half Fourier turbo-spin echo [HASTE])
d)reordering of phase encoding (ROPE)
e) phase encoding and reordering (PEAR).
11.All are true regarding 81mKr except
a) Krypton-81m has very short half-life
b)Krypton-81m is cheap to produce
c)Krypton-81m is available from its generator for 1d only
d)Krypton-81m does not accumulate progressively in regions
of lung with a low ventilatory turnover.
e)Krypton-81m
is in many ways the ideal agent of choice for ventilation imaging
13)False positive FDG –PET is noted in all
except
a) bacterial pneumonia
b) sarcoidosis
c) tuberculosis
d) Wegener's granulomatosis
e) bronchioloalveolar cell carcinomas
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