Clinical application of the kidney to aortic blood flow index (K/A ratio).

P. T. Kirchner, Mitchell Goldman, S. B. Leapman, R. F. Kiepfer

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

The kidney to aortic blood flow index (K/A ratio) is the ratio of the slopes of the upstrokes of renal and aortic histograms, derived from regions of interest applied to sequential gamma camera images of the first transit of a 99mTc bolus. This index proved in our previous dog studies to have a good correlation with renal artery blood flow. In the 190 clinical studies of renal allografts reported here, the K/A ratios correlate well with independently established retrospective clinical-pathologic assessment of renal functional status. Normal range for the K/A ratio was established in 50 patients with no demonstrable renal disease. Tests of inter-observer reproducibility show a mean relative standard deviation of 7% for independently performed analyses on the same data.

Original languageEnglish (US)
Pages (from-to)120-126
Number of pages7
JournalContributions to Nephrology
Volume11
StatePublished - 1978
Externally publishedYes

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Kidney
Gamma Cameras
Renal Circulation
Renal Artery
Allografts
Reference Values
Dogs

All Science Journal Classification (ASJC) codes

  • Medicine(all)

Cite this

Clinical application of the kidney to aortic blood flow index (K/A ratio). / Kirchner, P. T.; Goldman, Mitchell; Leapman, S. B.; Kiepfer, R. F.

In: Contributions to Nephrology, Vol. 11, 1978, p. 120-126.

Research output: Contribution to journalArticle

Kirchner, P. T. ; Goldman, Mitchell ; Leapman, S. B. ; Kiepfer, R. F. / Clinical application of the kidney to aortic blood flow index (K/A ratio). In: Contributions to Nephrology. 1978 ; Vol. 11. pp. 120-126.
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