Enhancement of abdominal organs on hepatic arterial phase: quantitative comparison between 1.5- and 3.0-T magnetic resonance imaging
| Autor: | Jose A. Goncalves Neto, Matthew Chaney, Ersan Altun, Mohamed El-Azzazi, Georgeta D. Vaidean, Richard C. Semelka |
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| Rok vydání: | 2008 |
| Předmět: |
Adult
Male Pathology medicine.medical_specialty Contrast enhancement Adolescent Biomedical Engineering Biophysics Contrast Media Spleen Gadolinium Sensitivity and Specificity Young Adult Hepatic Artery Abdomen Image Interpretation Computer-Assisted medicine Humans Radiology Nuclear Medicine and imaging Child Aged Kidney medicine.diagnostic_test business.industry Reproducibility of Results Mean age Magnetic resonance imaging Middle Aged Image Enhancement Magnetic Resonance Imaging Viscera medicine.anatomical_structure Female Pancreas Nuclear medicine business Algorithms Arterial phase |
| Zdroj: | Magnetic resonance imaging. 28(1) |
| ISSN: | 1873-5894 |
| Popis: | Purpose To compare the extent of enhancement of abdominal organs as shown on subphases of hepatic arterial phase quantitatively between 1.5- and 3.0-T MRI among patients with various abdominal conditions. Materials and Methods A total of 126 patients, of whom 68 were women (age range, 3–82 years; mean age, 48 years) and 58 were men (age range, 6–73 years; mean age, 50 years), were included in the study. Of 126 patients, 98 were scanned at 1.5 T and 28 were scanned at 3.0 T. The presence of one of three predefined subphases of hepatic arterial phase was determined on early post-gadolinium sequence in each patient by two reviewers in consensus. Extent of enhancement of the kidney, pancreas, spleen and liver on these subphases was determined quantitatively by measuring the signal intensities. Mann Whitney–Wilcoxon test was used to compare the contrast enhancement of organs on each subphase between 1.5- and 3.0-T MRI. Results The kidney, spleen, pancreas and liver demonstrated 1.79- to 2.45-, 1.65- to 1.97-, 1.66- to 1.8- and 1.1- to 2.02-fold higher enhancement on the subphases of hepatic arterial phase at 3.0 T compared to 1.5 T, respectively. The differences in contrast enhancement were significant for the kidney, pancreas and spleen on all subphases between 1.5 and 3.0 T. Conclusion The relative enhancement of the kidney, spleen and pancreas is consistently and significantly higher at 3.0 T than at 1.5 T in matched subphases of hepatic arterial enhancement. |
| Databáze: | OpenAIRE |
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