Evert-Jan P A Vonken1, Rutger C G Bruijnen1, Tom J Snijders2, Tatjana Seute2, Marnix G E H Lam1, Bart de Keizer1, Arthur J A T Braat3. 1. Department of Radiology and Nuclear Medicine, University Medical Center Utrecht, Utrecht, The Netherlands; and. 2. Department of Neurology, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, The Netherlands. 3. Department of Radiology and Nuclear Medicine, University Medical Center Utrecht, Utrecht, The Netherlands; and a.j.a.t.braat@umcutrecht.nl.
Abstract
Intravenous 177Lu-high-affinity (HA)-DOTATATE has shown promising results for the treatment of surgery- and radiotherapy-refractory meningiomas. We aimed to investigate the added value of intraarterial administration. Methods: Patients underwent at least 1 intravenous 177Lu-HA-DOTATATE treatment first and subsequent intraarterial cycles. Inpatient and intrapatient comparison was based on posttreatment 177Lu-HA-DOTATATE imaging 24 h after injection. The technical success rate and adverse events were recorded. Results: Four patients provided informed consent. The technical success rate was 100%, and no angiography-related or unexpected adverse events occurred. Intrapatient comparison showed an increased target lesion accumulation on both planar imaging (mean, +220%) and SPECT/CT (mean, +398%) after intraarterial administration, compared with intravenous administration. No unexpected adverse events occurred during follow-up. Conclusion: Intraarterial peptide receptor radionuclide therapy significantly increases tracer accumulation and is a safe and promising improvement for salvage meningioma patients. Future prospective studies on intraarterial peptide receptor radionuclide therapy are needed to determine the gain in efficacy and survival.
Intravenous 177Lu-high-affinity (HA)-DOTATATE has shown promising results for the treatment of surgery- and radiotherapy-refractory meningiomas. We aimed to investigate the added value of intraarterial administration. Methods: Patients underwent at least 1 intravenous 177Lu-HA-DOTATATE treatment first and subsequent intraarterial cycles. Inpatient and intrapatient comparison was based on posttreatment 177Lu-HA-DOTATATE imaging 24 h after injection. The technical success rate and adverse events were recorded. Results: Four patients provided informed consent. The technical success rate was 100%, and no angiography-related or unexpected adverse events occurred. Intrapatient comparison showed an increased target lesion accumulation on both planar imaging (mean, +220%) and SPECT/CT (mean, +398%) after intraarterial administration, compared with intravenous administration. No unexpected adverse events occurred during follow-up. Conclusion: Intraarterial peptide receptor radionuclide therapy significantly increases tracer accumulation and is a safe and promising improvement for salvage meningioma patients. Future prospective studies on intraarterial peptide receptor radionuclide therapy are needed to determine the gain in efficacy and survival.
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