TY - JOUR
T1 - Correlation of patient weight and cross-sectional dimensions with subjective image quality at standard dose abdominal CT
AU - Kalra, Mannudeep K.
AU - Maher, Michael M.
AU - Prasad, Srinivasa R.
AU - Hayat, M. Sikandar
AU - Blake, Michael A.
AU - Varghese, Jose
AU - Halpern, Elkan F.
AU - Saini, Sanjay
PY - 2003
Y1 - 2003
N2 - Objective: We evaluated the association between patients' weight and abdominal cross-sectional dimensions and CT image quality. Materials and Methods: We prospectively evaluated 39 cancer patients aged more than 65 years with multislice CT scan of abdomen. All patients underwent equilibrium phase contrast-enhanced abdominal CT with 4 slices (from top of the right kidney) obtained at standard tube current (240-280 mA). All other scanning parameters were held constant. Patients' weight was measured just prior to the study. Cross-sectional abdominal dimensions such as circumference, area, average anterior abdominal wall fat thickness and, anteroposterior and transverse diameters were measured in all patients. Two subspecialty radiologists reviewed randomized images for overall image quality of abdominal structures using 5-point scale. Non-parametric correlation analysis was performed to determine the association of image quality with patients' weight and cross-sectional abdominal dimensions. Results: A statistically significant negative linear correlation of 0.46, 0.47, 0.47, 0.58, 0.56, 0.54, and 0.56 between patient weight, anterior abdominal fat thickness, anteroposterior and transverse diameter, circumference, cross-sectional area and image quality at standard scanning parameters was found (p<0.01). Conclusion: There is a significant association between image quality, patients' weight and cross-sectional abdominal dimensions. Maximum transverse diameter of the abdomen has the strongest association with subjective image quality.
AB - Objective: We evaluated the association between patients' weight and abdominal cross-sectional dimensions and CT image quality. Materials and Methods: We prospectively evaluated 39 cancer patients aged more than 65 years with multislice CT scan of abdomen. All patients underwent equilibrium phase contrast-enhanced abdominal CT with 4 slices (from top of the right kidney) obtained at standard tube current (240-280 mA). All other scanning parameters were held constant. Patients' weight was measured just prior to the study. Cross-sectional abdominal dimensions such as circumference, area, average anterior abdominal wall fat thickness and, anteroposterior and transverse diameters were measured in all patients. Two subspecialty radiologists reviewed randomized images for overall image quality of abdominal structures using 5-point scale. Non-parametric correlation analysis was performed to determine the association of image quality with patients' weight and cross-sectional abdominal dimensions. Results: A statistically significant negative linear correlation of 0.46, 0.47, 0.47, 0.58, 0.56, 0.54, and 0.56 between patient weight, anterior abdominal fat thickness, anteroposterior and transverse diameter, circumference, cross-sectional area and image quality at standard scanning parameters was found (p<0.01). Conclusion: There is a significant association between image quality, patients' weight and cross-sectional abdominal dimensions. Maximum transverse diameter of the abdomen has the strongest association with subjective image quality.
KW - Computed tomography (CT)
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U2 - 10.3348/kjr.2003.4.4.234
DO - 10.3348/kjr.2003.4.4.234
M3 - Article
C2 - 14726640
AN - SCOPUS:2342531080
SN - 1229-6929
VL - 4
SP - 234
EP - 238
JO - Korean Journal of Radiology
JF - Korean Journal of Radiology
IS - 4
ER -