Related Experiment Videos
MRI of hepatic iron deposition in patients with renal transplant
F H Miller1, M R Fisher, W Soper
1Department of Radiology, Northwestern University Medical School, Chicago, Illinois.
Abstract:
Excess hepatic iron deposition was found in five of 15 (33%) renal transplant patients undergoing magnetic resonance (MR) screening for avascular necrosis of the femoral heads. Only one of these patients had overt liver disease. The number of prior blood transfusions was a significant factor for this deposition, whereas the age and sex of the patients, number and type of transplants, histocompatibility alleles (HLA), and years of hemodialysis and of chronic renal failure were not significant etiological factors. Liver/fat intensity ratios of less than 0.29 on T1-weighted images and ratios of less than 0.21 on T2-weighted images and a calculated T2 value of less than 35 ms were the best indicators of iron overload. Renal transplant patients are at great risk for excess hepatic iron deposition and MR imaging is a promising tool for the diagnosis of iron overload in this patient population.
Insights
Renal transplant patients often have excess hepatic iron deposition, with prior blood transfusions being a key risk factor. Magnetic resonance (MR) imaging effectively detects this iron overload in patients.
Area of Science:
- Nephrology
- Radiology
- Hepatology
Background:
- Renal transplant recipients face various complications, including potential iron overload.
- Hepatic iron deposition can occur in these patients, often linked to transfusion history.
Purpose of the Study:
- To investigate the prevalence and indicators of excess hepatic iron deposition in renal transplant patients.
- To evaluate the utility of magnetic resonance (MR) imaging in diagnosing iron overload in this population.
Main Methods:
- Retrospective analysis of 15 renal transplant patients undergoing MR screening.
- Assessment of hepatic iron using T1-weighted and T2-weighted MR imaging, including liver/fat intensity ratios and T2 values.
- Correlation of iron deposition with clinical factors like transfusion history, age, sex, transplant details, HLA, and duration of hemodialysis/renal failure.
Main Results:
- Thirty-three percent (5/15) of renal transplant patients showed excess hepatic iron deposition.
- Prior blood transfusions were a significant etiological factor for iron deposition.
- MR imaging parameters, including specific liver/fat intensity ratios and T2 values, effectively indicated iron overload.
Conclusions:
- Renal transplant patients are at high risk for hepatic iron overload, particularly those with a history of blood transfusions.
- MR imaging is a valuable, non-invasive tool for diagnosing and monitoring iron overload in this patient group.