Ferumoxytol-enhanced Magnetic Resonance Venography in Patients With Venous Diseases
Ориентир для пациента и семьи
Простыми словами
Автоматическая сводка по структурированным данным реестра. Она помогает сориентироваться, но не заменяет официальный протокол или оценку врача.
- Что изучают
- В протоколе указаны: Ferumoxytol injection.
- Кому может быть актуально
- Состояния в реестре: Venous Diseases. Базовые параметры: от 18 лет · Все.
- Что важно проверить
- Возраст, диагноз и пол — только базовые ориентиры. Предыдущее лечение, анализы и другие обязательные условия указаны ниже в критериях участия.
- Где проводится
- Китай
- Следующий шаг
- Сохраните исследование, покажите его лечащему врачу и уточните актуальный статус у исследовательского центра. Расходы, документы и поездка →
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Официальное название
A Single-center, Evaluator-blinded Clinical Study of Polysaccharide Superparamagnetic Iron Oxide Injection for Magnetic Resonance Venography in Patients With Venous System Diseases
Обзор
The purpose of this single-center, prospective, evaluator-blinded study is to establish and optimize the imaging protocol for ferumoxytol-enhanced magnetic resonance venography (Fe-MRV) in patients with venous system diseases. Current gadolinium-based contrast agents used in MRI have limitations, including short circulation half-lives and potential risks for patients with renal impairment. Ferumoxytol, a superparamagnetic iron oxide nanoparticle, offers a longer imaging window and no renal toxicity, making it a promising alternative for vascular imaging. This study will enroll 50 adult patients with suspected or confirmed venous structural abnormalities or circulation disorders. To determine the minimum effective diagnostic dose, each participant will receive a total dose of 3.0 mg/kg, administered as four equal intravenous aliquots, with MRI performed after each aliquot (cumulative doses: 0.75, 1.50, 2.25, and 3.0 mg/kg). Independent, blinded radiologists will evaluate the image quality at each cumulative dose level to determine the lowest possible dose required to achieve successful clinical diagnosis.
Вмешательства
- Препарат Ferumoxytol injection
Ferumoxytol is a superparamagnetic iron oxide nanoparticle contrast agent. It is administered intravenously at a total dose of 3.0 mg/kg, divided into four equal consecutive aliquots (0.75 mg/kg each).
Первичные конечные точки
- Overall Diagnostic Success Rate [Срок оценки: Up to 2 days post-intervention]
Вторичные конечные точки (2)
- Signal-to-Noise Ratio (SNR) Assessed by Ferumoxytol-enhanced Magnetic Resonance Venography [Срок оценки: Up to 2 days post-intervention]
- Contrast-to-Noise Ratio (CNR) Assessed by Ferumoxytol-enhanced Magnetic Resonance Venography [Срок оценки: Up to 2 days post-intervention]
Критерии участия
Критерии включения
- Age >= 18 years.
- Suspected or preliminarily diagnosed venous structural abnormalities (e.g., lower-extremity veins, central veins) or venous circulation disorders requiring Fe-MRV evaluation.
- Able and willing to provide written informed consent.
Критерии исключения
- History of allergy/hypersensitivity to iron or dextran, or known allergy-prone constitution.
- Currently receiving other oral or intravenous iron products.
- Hemosiderosis or hemochromatosis.
- Prior hypersensitivity reaction to intravenous iron products, or any condition associated with iron overload.
- Unable to undergo MRI for psychological reasons (e.g., claustrophobia) or physical reasons (e.g., non-MRI-compatible metallic implants/foreign bodies).
- End-stage disease or life expectancy < 1 year.
- Pregnant women.
- Any other condition judged by the investigator to make the participant unsuitable for the study.
Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.
Здоровые добровольцы: Нет
Дизайн исследования
- Распределение
- Не применимо
- Модель
- Одна группа
- Маскирование
- Открытое
- Основная цель
- Диагностика
Центры проведения
Китай · 1 центр
- The Affiliated Nanjing Drum Tower Hospital of Nanjing University Medical School — Нанкин
Публикации
- Stoumpos S, Hennessy M, Vesey AT, Radjenovic A, Kasthuri R, Kingsmore DB, Mark PB, Roditi G. Ferumoxytol magnetic resonance angiography: a dose-finding study in patients with chronic kidney disease. Eur Radiol. 2019 Jul;29(7):3543-3552. doi: 10.1007/s00330-019-06137-4. Epub 2019 Mar 27. PMID 30919067
- Liu Y, Cao B, Wang X, Zhong J, Li Z, Peng R, Zhao D, Gu N, Yang Q. Ferumoxytol-enhanced MR venography for mapping lower-extremity venous networks and evaluating varicose veins in patients with diabetes. Eur Radiol. 2024 Nov;34(11):7197-7207. doi: 10.1007/s00330-024-10772-x. Epub 2024 May 7. PMID 38713277
- Shahrouki P, Khan SN, Yoshida T, Iskander PJ, Ghahremani S, Finn JP. High-resolution three-dimensional contrast-enhanced magnetic resonance venography in children: comparison of gadofosveset trisodium with ferumoxytol. Pediatr Radiol. 2022 Mar;52(3):501-512. doi: 10.1007/s00247-021-05225-2. Epub 2021 Dec 22. PMID 34936018
- Gallo CJR, Mammarappallil JG, Johnson DY, Chalian H, Ronald J, Bashir MR, Kim CY. Ferumoxytol-enhanced MR Venography of the Central Veins of the Thorax for the Evaluation of Stenosis and Occlusion in Patients with Renal Impairment. Radiol Cardiothorac Imaging. 2020 Nov 19;2(6):e200339. doi: 10.1148/ryct.2020200339. eCollection 2020 Dec. PMID 33778639
- Bashir MR, Mody R, Neville A, Javan R, Seaman D, Kim CY, Gupta RT, Jaffe TA. Retrospective assessment of the utility of an iron-based agent for contrast-enhanced magnetic resonance venography in patients with endstage renal diseases. J Magn Reson Imaging. 2014 Jul;40(1):113-8. doi: 10.1002/jmri.24330. Epub 2013 Oct 15. PMID 24130008
Идентификаторы
NCT: NCT07452250 · 2025-0616-02