Page 49 - Feline diagnostic imaging

4.3 ­enal Scintigrappy 43

Figure 4.11 Summed image of dynamic acquisition frames showing regions of interest drawn for both kidneys and background
activity cranial and caudal to each kidney. Ventral images with cat in left lateral recumbency, head to the left.

Date 2/21/2019 Injected dose 0 mCi
Owners Name Feline 273,129 Pre-counts
Clinic # 111111 64,793 Post-counts
Patients Name Peepers 208, 337 Net
ROI Net Kidney counts
Gross 1-3 minutes Size 1-3 minutes % Inj dose
Rt Kidney 14,355 12 6,213 2.98
Lt Kidney 10,892 7 3,733 1.79
Rt BKD 1,357 2
Lt BKD 3,068 3
Right Kidney Left Kidney
Total GFR 62% 38%
1.19 ml/min/kg 0.74 ml/min/kg 0.45 ml/min/kg

Renogram curves
Right kidney
Left kidney
800
Rt BKD 1
Lf BKD 2
700
600
500
400
300

200
GFR Quantification
100
–
0.00 1.00 2.00 3.00 4.00 5.00 6.00
Time in minutes
Figure 4.12 Report generated from scintigraphic renal procedure to determine glomerular filtration rate showing both total GFR and
individual GFR for each kidney. The cat had an enlarged left kidney. Ultrasound-guided biopsies revealed pyogranulomatous
inflammation, necrosis, and evidence of prior hemorrhage. Nephrectomy was considered. Global GFR was 2.52 mL/min/kg (N >2.5), left
kidney 1.02, right kidney 1.50. Because global kidney function was marginal and the affected left kidney was contributing 40% of GFR,
nephrectomy was deemed likely to result in renal failure. Medical treatment was initiated instead.