Correlation of Patient Weight and Cross-Sectional Dimensions with Subjective Image Quality at Standard Dose Abdominal CT
Korean Journal of Radiology
;
: 234-238, 2003.
Article
in English
| WPRIM
| ID: wpr-214906
ABSTRACT
OBJECTIVE:
We evaluated the association between patients' weight and abdominal cross-sectional dimensions and CT image quality. MATERIALS ANDMETHODS:
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.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Radiation Dosage
/
Body Weight
/
Body Weights and Measures
/
Radiography, Abdominal
/
Tomography, X-Ray Computed
/
Observer Variation
/
Prospective Studies
/
Statistics, Nonparametric
/
Contrast Media
Type of study:
Controlled clinical trial
/
Observational study
/
Prevalence study
/
Risk factors
Limits:
Aged
/
Aged80
/
Female
/
Humans
/
Male
Language:
English
Journal:
Korean Journal of Radiology
Year:
2003
Type:
Article
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