CT Thorax

Which lung conditions can CT scans help diagnose?

• Asthma, COPD, and lung cancer

• Pneumonia, tuberculosis, and bronchiectasis

• Bronchitis, lung cancer, and influenza

• Emphysema, tuberculosis, and pleurisy

What is the purpose of ultra-fast helical acquisition in CT imaging for pneumonia?

• To increase scan resolution

• To minimize motion artifacts

• To enhance color contrast in images

• To improve patient comfort during long scans

Which of the following is a key imaging characteristic of tuberculosis (TB) on a CT scan?

• Tree-in-bud appearance and ground-glass opacity

• Consolidation patterns and pleural effusion

• Bronchial dilation and mucus plugging

• Airway narrowing and vascular calcification

What is the recommended slice thickness for CT imaging of bronchiectasis?

• 2.5mm

• 5mm

• 1.25 mm

• ≤1 mm

What is the primary purpose of High-Resolution CT (HRCT) for tuberculosis imaging?

• To detect pleural effusion

• To monitor lung nodules

• To assess early or subtle lung changes

• To evaluate bronchial narrowing

In CT imaging, what does the window width (WW) and window level (WL) setting of 1500 and 700, respectively, indicate?

• Adjustment for bone imaging

• Optimization for lung imaging

• Standard parameters for brain CT scans

• Default settings for abdominal scans

What parameter should be adjusted to reduce radiation exposure for long-term monitoring of TB patients?

• Window settings

• kVp and mAs settings

• kVp and mAs settings

• Scan area

What is a common imaging characteristic of bronchiectasis?

• Pleural thickening

• Cavitations and nodular lesions

• Bronchial dilation and airway wall thickening

• Ground-glass opacity and centrilobular nodules

What is the typical scan area for a CT thorax?

• From the diaphragm to the clavicle

• From the neck to the lower abdomen

• From above the lung apices to below the costophrenic angle

• From the trachea to the heart apex

What is one method to improve CT imaging for patients who cannot hold their breath?

• Use ultra-fast helical acquisition

• Increase kVp and mAs settings

• Switch to a larger field of view (FOV)

• Perform repeated scans for clarity