Drug concentration estimation using contrast-enhanced MRI in intra-arterial chemotherapy for head and neck cancers
| Autor: | Jun Ueda, Nobukazu Fuwa, Iwai Tohnai, Tosiaki Miyati, Noriko, Takashi Daimon, Suguru Ota, Yoshikazu Maeda, Shintaro Ito, Takayuki Morishima, Miwako Nomura |
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| Rok vydání: | 2021 |
| Předmět: |
Male
Lingual artery External carotid artery Contrast Media Antineoplastic Agents 03 medical and health sciences 0302 clinical medicine Tongue medicine.artery Organometallic Compounds medicine Humans Infusions Intra-Arterial Distribution (pharmacology) 030223 otorhinolaryngology Aged Aged 80 and over medicine.diagnostic_test business.industry Head and neck cancer Cancer Magnetic resonance imaging Arteries General Medicine Middle Aged medicine.disease Magnetic Resonance Imaging medicine.anatomical_structure Otorhinolaryngology Head and Neck Neoplasms 030220 oncology & carcinogenesis Carotid Artery External Female Surgery Nuclear medicine business Artery |
| Zdroj: | Auris Nasus Larynx. 48:496-501 |
| ISSN: | 0385-8146 |
| DOI: | 10.1016/j.anl.2020.10.012 |
| Popis: | Objective In cases of head and neck cancer treated with intra-arterial chemotherapy, no objective indices are available for determining the distribution of anticancer drugs administered to multiple arteries. To establish such indices, noninvasive measurements of drug concentrations are required in the arterial perfusion area of each artery. In MRI, changes in 1/T1 (Δ1/T1) are correlated with the contrast agent concentration. We focused on these properties and investigated whether it is possible to estimate anticancer drug concentrations within tissue based on Δ1/T1. Methods We employed the fast spin echo (FSE) sequence to determine optimum imaging parameters using a phantom. Subsequently, contrast agent was administered via the lingual and external carotid arteries for seven cases of tongue cancer. Δ1/T1 were then measured in tumor and nontumor tissues. The results of this study were compared with those of a previous study in which intratumor concentrations of anticancer agent were measured in excised specimens. Results The optimum imaging parameters for the FSE was two repetition times (TR, 500 and 1000 ms). When compared with the external carotid artery administration, the lingual artery administration of contrast agent resulted in significantly higher Δ1/T1 in both tumor and nontumor tissues (2.13 and 2.62 times, respectively). The multiplying factor for the nontumor tissue and high homogeneity of the contrast agent concentration were reasonably consistent with the results of the previous study. Conclusion This method can be applied to estimating intratissue concentrations of intra-arterially administered anticancer drugs, thus possibly providing useful information in determining the distribution of anticancer drugs. |
| Databáze: | OpenAIRE |
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