"Sequential spaced acquisition "
"Volumetric acquisition "
"slice thickness: 0.625-1.25 mm"
"scan time: 0.5-1 second"
"kV: 120"
"mAs: 100-200"
"collimation: 1.5-3 mm"
"matrix size: 768 x 768 or the largest available"
"FOV: 35 cm"
"reconstruction algorithm: high spatial frequency"
"window: lung window"
"patient position: supine (routinely) or prone (if suspected ILD)"
"level of inspiration: full inspiration (routinely recommended) expiratory HRCT scans in patients with obstructive lung diseases"
"FOV: 35 cm"
Expected headings
"Indications"
"Purpose"
"Sequential spaced acquisition "
"Volumetric acquisition "
"Fundamental technical protocols"
"Reducing radiation dose"
"Findings"
"Lower dose CT protocols may be used in follow-up scans of known or younger patients at the price of slightly lower image quality. Most patients undergo many studies for surveillance of their disease; hence, this can result in significant radiation dose reduction. Methods usually applied for that include:"
"History and etymology"