RADIONUCLIDE METHODS IN THE DETECTION AND FORECAST OF ANTHRACYCLINE-INDUCED CARDIOTOXICITY IN BREAST CANCER PATIENTS

Purpose: To compare the possibility of using multiple-gated acquisition scan (MUGA) and 99mTc-MIBI GATE SPECT for evaluation and forecast of anthracycline–induced cardiotoxicity in breast cancer patients. material and methods. The study included 67 women (mean age – 44 ± 4.9 years) with breast cancer without significant pathology of the cardiovascular system. For the treatment of these patients used doxorubicin in dose of 50 mg/m2  per course in combination with various drugs. All patients were studied by MUGA (n=33) or GATE SPECT (n=34) before starting chemotherapy, at 1 hour after the first administration of doxorubicin and after the 4th course. results. After administration of doxorubicin at a dose of 50 mg/m2 was found that 11 patients according MUGA and 14 patients according GATE SPECT had a significant (10 % or more) reduction in left ventricular ejection fraction (LVEF). Significant inhibition of systolic function in this patient group remained after the 4th course treatment. In the individual analysis of the MUGA and GATE SPECT results, registered after the administration of doxorubicin at a dose of 200 mg/m2, was revealed that the criterion of LVEF reduction (10 % or more) in response to the first dose of doxorubicin can predict the development of chronic cardiotoxicity. Conclusion. The MUGA and GATE SPECT can be applied with equal effectiveness for evaluation of acute and chronic anthracycline–induced cardiotoxicity in breast cancer patients. The decrease in LVEF (10 % or more) in response to the first dose of doxorubicin can predict the development of chronic cardiotoxicity

METABOLIC SINGLE-PHOTON EMISSION COMPUTED TOMOGRAPHY WITH THE NEW RADIOPHARMACEUTICAL ⁹⁹ᵐTc-1-thio-D-glucose IN THE DIAGNOSIS AND MONITORING OF THE PRIMARY BREAST LYMPHOMA (CASE REPORT)

The article shows the feasibility of detecting and monitoring primary breast diffuse large B-cell lymphoma using single-photon emission computed tomography (SPECT) with 99mTc-1-thio-D-glucose (99mТс-TG), a new radiopharmaceutical. The innovative radiopharmaceutical makes it possible to evaluate the metabolism of tumor tissue without using positron emission tomography. The findings of 99mTc-TG SPECT obtained during diagnosis and monitoring of the patient were confirmed by the results of computed tomography. A comprehensive examination of the patient, including 99mTc-TG SPECT, made it possible to diagnose a rare case of primary breast lymphoma. Primary breast lymphoma accounts for 1.7–2.2 % of all extranodal nonHodgkin lymphomas. Diffuse large B-cell lymphoma is the most common histological type occurring usually as a unilateral palpable tumor in middle-aged women. Extranodal lymphomas account for less than 0.5 % of all malignant neoplasms of the breast. After 6 courses of immunochemotherapy, the patient underwent 99mTc-TG SPECT, which demonstrated persistent hypermetabolic activity in the breast. The patient received radiation therapy to the remaining tumor of the left breast. The patient is in remission and followed up at the Cancer Research Institute of Tomsk National Research Medical Center. Thus, 99mTc-TG SPECT is believed to be a promising method for visualizing primary breast lymphomas and assessing their treatment outcomes. It is an alternative to the standard approach using 18F-FDG positron emission tomography. The method compares favorably with positron emission tomography with its wide availability and low cost of study

МЕТАБОЛИЧЕСКАЯ ОДНОФОТОННАЯ ЭМИССИОННАЯ КОМПЬЮТЕРНАЯ ТОМОГРАФИЯ С НОВЫМ РАДИОФАРМАЦЕВТИЧЕСКИМ ПРЕПАРАТОМ «⁹⁹ᵐTc-1-Тио-D-глюкоза» В ДИАГНОСТИКЕ И МОНИТОРИНГЕ ИЗОЛИРОВАННОЙ ЛИМФОМЫ МОЛОЧНОЙ ЖЕЛЕЗЫ (КЛИНИЧЕСКОЕ НАБЛЮДЕНИЕ)

The article shows the feasibility of detecting and monitoring primary breast diffuse large B-cell lymphoma using single-photon emission computed tomography (SPECT) with 99mTc-1-thio-D-glucose (99mТс-TG), a new radiopharmaceutical. The innovative radiopharmaceutical makes it possible to evaluate the metabolism of tumor tissue without using positron emission tomography. The findings of 99mTc-TG SPECT obtained during diagnosis and monitoring of the patient were confirmed by the results of computed tomography. A comprehensive examination of the patient, including 99mTc-TG SPECT, made it possible to diagnose a rare case of primary breast lymphoma. Primary breast lymphoma accounts for 1.7–2.2 % of all extranodal nonHodgkin lymphomas. Diffuse large B-cell lymphoma is the most common histological type occurring usually as a unilateral palpable tumor in middle-aged women. Extranodal lymphomas account for less than 0.5 % of all malignant neoplasms of the breast. After 6 courses of immunochemotherapy, the patient underwent 99mTc-TG SPECT, which demonstrated persistent hypermetabolic activity in the breast. The patient received radiation therapy to the remaining tumor of the left breast. The patient is in remission and followed up at the Cancer Research Institute of Tomsk National Research Medical Center. Thus, 99mTc-TG SPECT is believed to be a promising method for visualizing primary breast lymphomas and assessing their treatment outcomes. It is an alternative to the standard approach using 18F-FDG positron emission tomography. The method compares favorably with positron emission tomography with its wide availability and low cost of study. В статье показана возможность диагностики и мониторинга первичного поражения молочной железы диффузной В-крупноклеточной лимфомой на фоне проведения химиотерапии с помощью однофотонной эмиссионной компьютерной томографии с новым радиофармацевтическим препаратом «99mTc-1-тио-Dглюкоза» (99mТс-ТГ). Указанный инновационный отечественный препарат позволяет оценить метаболизм опухолевой ткани без использования позитронно-эмиссионной томографии. Полученные результаты однофотонной эмиссионной компьютерной томографии с 99mТс-ТГ при осуществлении диагностики и динамического наблюдения пациентки были подкреплены результатами компьютерной томографии. Комплексное обследование пациентки позволило диагностировать редкий случай изолированной лимфомы молочной железы. Это заболевание составляет 1,7–2,2 % от всех экстранодальных неходжкинских лимфом, как правило, представлено В-клеточной лимфомой, обычно встречается у женщин среднего возраста в виде односторонней пальпируемой опухоли. На экстранодальные лимфомы приходится менее 0,5 % всех злокачественных новообразований молочной железы. Принимая во внимание сохраняющуюся гиперметаболическую активность в патологическом очаге по данным однофотонной эмиссионной компьютерной томографии с 99mTc-ТГ, выполненной через 6 курсов иммунохимиотерапии, с целью консолидации процесса пациентке был проведен курс дистанционной лучевой терапии на оставшуюся опухоль левой молочной железы. В настоящее время ремиссия сохраняется, пациентка находится под наблюдением в НИИ онкологии Томского НИМЦ. На основании полученных результатов выдвинуто предположение о появлении перспективного метода для визуализации первичного опухоле вого процесса и оценки результатов терапии злокачественных лимфом, являющегося альтернативой стандартного подхода с применением позитронно-эмиссионной томографии с 18F-ФДГ. Предложенный способ диагностики этой патологии выгодно отличается  от позитронно-эмиссионной томографии широкой доступностью и низкой стоимостью исследования