ASN's Mission

To create a world without kidney diseases, the ASN Alliance for Kidney Health elevates care by educating and informing, driving breakthroughs and innovation, and advocating for policies that create transformative changes in kidney medicine throughout the world.

learn more

Contact ASN

1401 H St, NW, Ste 900, Washington, DC 20005

email@asn-online.org

202-640-4660

The Latest on Twitter

Kidney Week

Abstract: PO2102

Correlation Between CT Volumetric and Nuclear Renal Scans in Donors with Renal Asymmetry

Session Information

Category: Transplantation

  • 1901 Transplantation: Basic

Authors

  • Gandhi, Nisarg, Houston Methodist Hospital, Houston, Texas, United States
  • Ibrahim, Hassan N., Houston Methodist Hospital, Houston, Texas, United States
  • Nguyen, Duc T.M., Houston Methodist Hospital, Houston, Texas, United States
  • Graviss, Edward A., Houston Methodist Hospital, Houston, Texas, United States
  • Nguyen, Hana, Houston Methodist Hospital, Houston, Texas, United States
Background

The Organ Procurement and Transplant Network (OPTN) lists renal asymmetry as a relative contraindication to donation. Clinicians resort to nuclear medicine scans to address discrepancies in kidney size observed by commuted tomography (CT) volumetric. Our study looked at the correlation between CT volumetrics and nuclear medicine scan in addressing renal asymmetry.

Methods

At a large US transplant center, 62 potential donors with discrepancies in kidney size underwent both CT volumetric and nuclear medicine renal scans. The concordance correlation between the CT scan and nuclear medicine scan results was determined separately for the right and left kidney.

Results

The donors were 52.2 years of age (median IQR: 38.5, 61.7), 29.0% male, and 59.7% white. By CT, the right kidney was 45.5% and left kidney was 54.5% of the overall volume. On nuclear medicine scans, right kidney was 46.8% and left kidney was 53.3% (Table 1). The Pearson correlation coefficient was 0.59 for the right kidney and was 0.58 for the left kidney (Figure 1, 2).

Conclusion

Nuclear medicine seems to offer no advantage over CT volumetrics and it adds to the overall time (30-60 minutes) and cost (~$1,587) of the donor evaluation process.

 RightLeft
CT Volumetrics (%), median IQR45.5 (43.0, 49.5)54.5 (50.5, 57.0)
Nuclear Medicine Scan (%), median IQR46.8 (43.6, 49.4)53.3 (50.6, 56.4)

Correlation between CT scan and nuclear medicine scan for right kidney

Correlation between CT scan and nuclear medicine scan for left kidney