Correct Answer:- Option-A
Question28:-Which of the following is false 7
A:-Cakcification is present in 10% with Wilms tumor
B:-Calcification is present in 50% of neuroblastoma
C:-Stage IV-S neuroblastoma has a very bad prognosis
D:-Bilateral Wilms tumor is stage V tumor
Correct Answer:- Option-C
Question29:-The earliest radiologic sign of mitral stenosis is
A:-Straightening of left border of cardiac silhouette
B:-Upper lobe pulmonary veins are congested and prominent
C:-"Inverted moustache sign"
D:-kerley B lines
Correct Answer:- Option-B
Question30:-Pneumothorax is common with pneumonia caused by
A:-Streptococcus
B:-Pneumocystis cari
C:-Staphylococcus aureus
D:-H. influenzae
Correct Answer:- Option-B
Question31:-In x-ray imaging, noise is determined by
A:-Energy of x-rays hitting the detector
B:-Number of x-rays hitting the detector
C:-Tissue contrast
D:-Amount of scatter hitting the detector
Correct Answer:- Option-B
Question32:-Which of the following numbers reported by the scanner best reflects the total amount of radiation delivered to
the patient
A:-Dose
B:-CT Dose Index (CTDI}
C:-Pitch
D:-Dose-length product (DLP)
Correct Answer:- Option-D
Question33:-The following term refers to a measure designed to reflect stochastic {cancer) risk from radiation
A:-Dose
B:-CT Dose Index (CTDI}
C:-Average dose
D:-Effective dose
Correct Answer:- Option-D
Question34:-Automated exposure compensation uses the topogram (or scout) image to determine
A:-Tube current {mA}
B:-Pitch
C:-Reconstruction filter
D:-Bowtie filter
Correct Answer:- Option-A
Question35:-lodine is a good CT contrast agent because
A:-We can achieve very high concentrations in target 5
B:-The k-edge (33 keV) is much lower than x-ray energies produced by a 120 kV tube
C:-The k-edge (33 keV) is near the average diagnostic x-ray energy produced by a 120 kv tube
D:-It simulates the attenuation of bone
Correct Answer:- Option-C
Question36:-First X ray sign in pulmonary thromboembolism
A:-Wester mark sign
B:-Palla sign
C:-Fleischner sign
D:-Knuckle sign
Correct Answer:- Option-A
Question37:-Atoll sign is seen
A:-Tuberculosis
B:-Cryptogenic organising preumonia