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Thirty-six control subjects had computer assisted myelography (CAM) using the EMI CT 5005 scanner. The normal cervical cord is elliptical, more circular at the upper and lower ends and flatter in the mid-segments. Asymptomatic cord deformities, usually mild, were present in nine subjects (25%). Four measurements, namely, sagittal diameter (APD), transverse diameter (TD), area (a) and circumference (c) were made and two more parameters calculated i.e. APD/TD ratio and circularity (= 4 pi a/c2). These control values form the basis of qualitative and quantitative assessment of cord deformity. When cord measurements are to be used, control values should be obtained for each scanner and procedures should be standardized.
Y L Yu, and
G H du Boulay, and
J M Stevens, and
B E Kendall
August 1979,
Neuroradiology,
Y L Yu, and
G H du Boulay, and
J M Stevens, and
B E Kendall
January 1983,
AJNR. American journal of neuroradiology,
Y L Yu, and
G H du Boulay, and
J M Stevens, and
B E Kendall
November 1982,
Neurochirurgia,
Y L Yu, and
G H du Boulay, and
J M Stevens, and
B E Kendall
August 1956,
The American journal of roentgenology, radium therapy, and nuclear medicine,
Y L Yu, and
G H du Boulay, and
J M Stevens, and
B E Kendall
July 1976,
Radiology,
Y L Yu, and
G H du Boulay, and
J M Stevens, and
B E Kendall
December 1978,
Radiology,
Y L Yu, and
G H du Boulay, and
J M Stevens, and
B E Kendall
May 1977,
Neuroradiology,
Y L Yu, and
G H du Boulay, and
J M Stevens, and
B E Kendall
January 1979,
Diagnostic imaging,
Y L Yu, and
G H du Boulay, and
J M Stevens, and
B E Kendall
November 1986,
Bratislavske lekarske listy,
Y L Yu, and
G H du Boulay, and
J M Stevens, and
B E Kendall
August 1963,
Journal of neurosurgery,
