Association of Medical Physicists of Russia (President)
Russian Federation
Moscow, Russian Federation
N.N. Blokhin National Medical Research Center of Oncology (Medical Physicist)
GRNTI 76.03 Медико-биологические дисциплины
GRNTI 76.33 Гигиена и эпидемиология
OKSO 14.04.02 Ядерные физика и технологии
OKSO 31.06.2001 Клиническая медицина
OKSO 31.08.08 Радиология
OKSO 32.08.12 Эпидемиология
BBK 51 Социальная гигиена и организация здравоохранения. Гигиена. Эпидемиология
BBK 534 Общая диагностика
TBK 5708 Гигиена и санитария. Эпидемиология. Медицинская экология
TBK 5712 Медицинская биология. Гистология
TBK 5734 Медицинская радиология и рентгенология
TBK 6212 Радиоактивные элементы и изотопы. Радиохимия
Purpose: Modernization and evaluation of the clinical effectiveness of the technology of continuous radiometric monitoring carried out during high-dose chemotherapy of a surgically isolated limb with tumor foci. Material and methods: A modernized radiometric control technology for regional limb perfusion is proposed. It is based on in vivo labeling of erythrocytes with 99mTc eluate followed by continuous monitoring of the activity of labeled erythrocytes as a simulator of a chemotherapy drug over the heart region. Its distinctive features are intravenous injection of a pyrfotech slice after giving inhalation anesthesia to ensure a sufficient level of red blood cell chelation, as well as using 99mTc activity less than its minimum significant level, which allows working with an open source of ionizing radiation without violating the requirements of radiation safety regulations. Results: The developed technology was successfully used with 106 regional perfusion of the upper and lower extremities in patients with melanoma or sarcoma of soft tissues. In 4 cases, according to the results of radiometric control, the intervention of the surgical team was required to reduce the chemical preparation leakage that was occurring. Conclusion: The technology upgraded by us is characterized by ease of implementation, the ability to take timely measures to prevent or reduce the leakage of a chemotherapy drug from an isolated limb according to the results of continuous in vivo radiometric monitoring of 99mTc-labeled red blood cells over the heart, as well as low radiation load on the patient and staff.
high-dose chemotherapy, surgically isolated limb, regional perfusion, chemotherapy leaks, radiometric monitoring
Введение
Среди пациентов, страдающих такими заболеваниями, как меланома кожи, рак кожи и саркомы мягких тканей, выделяют группу с местно-распространенными формами опухолевого процесса. Стандартные методы лечения пораженных конечностей, включающие хирургическое лечение, химио- и лучевую терапию, не всегда оказываются эффективными. Особенности течения болезни иногда не позволяют использовать сохранные оперативные вмешательства, а калечащие операции, например ампутация пораженной конечности, резко снижают качество жизни пациентов. В некоторых случаях тот или иной метод лечения из указанных выше не может быть использован вообще.
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