Correlation of patient weight and cross-sectional dimensions with subjective image quality at standard dose abdominal CT

Mannudeep K. Kalra, Michael M. Maher, Srinivasa R. Prasad, M. Sikandar Hayat, Michael A. Blake, Jose Varghese, Elkan F. Halpern, Sanjay Saini

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Pages (from-to)234-238
Number of pages5
JournalKorean Journal of Radiology
Volume4
Issue number4
DOIs
StatePublished - Jan 1 2003

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Weights and Measures
Abdominal Fat
Abdomen
Abdominal Wall
Kidney
Neoplasms

Keywords

  • Computed tomography (CT)

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

Cite this

Correlation of patient weight and cross-sectional dimensions with subjective image quality at standard dose abdominal CT. / Kalra, Mannudeep K.; Maher, Michael M.; Prasad, Srinivasa R.; Hayat, M. Sikandar; Blake, Michael A.; Varghese, Jose; Halpern, Elkan F.; Saini, Sanjay.

In: Korean Journal of Radiology, Vol. 4, No. 4, 01.01.2003, p. 234-238.

Research output: Contribution to journalArticle

Kalra, Mannudeep K. ; Maher, Michael M. ; Prasad, Srinivasa R. ; Hayat, M. Sikandar ; Blake, Michael A. ; Varghese, Jose ; Halpern, Elkan F. ; Saini, Sanjay. / Correlation of patient weight and cross-sectional dimensions with subjective image quality at standard dose abdominal CT. In: Korean Journal of Radiology. 2003 ; Vol. 4, No. 4. pp. 234-238.
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