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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">cardiotomsk</journal-id><journal-title-group><journal-title xml:lang="ru">Сибирский журнал клинической и экспериментальной медицины</journal-title><trans-title-group xml:lang="en"><trans-title>Siberian Journal of Clinical and Experimental Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2713-2927</issn><issn pub-type="epub">2713-265X</issn><publisher><publisher-name>TSU publishing</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29001/2073-8552-2025-40-2-104-112</article-id><article-id custom-type="elpub" pub-id-type="custom">cardiotomsk-2736</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>КЛИНИЧЕСКИЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL STUDIES</subject></subj-group></article-categories><title-group><article-title>Возможности ЭКГ-синхронизированной сцинтиграфии миокарда в выявлении снижения резерва миокардиального кровотока у пациентов с необструктивным поражением коронарных артерий</article-title><trans-title-group xml:lang="en"><trans-title>Capabilities of gated myocardial perfusion imaging in detecting decreased myocardial blood flow reserve in patients with non-obstructive coronary artery disease</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шипулин</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shipulin</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Шипулин Владимир Владимирович, канд. мед. наук, научный сотрудник, лаборатория радионуклидных методов исследования</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Vladimir V. Shipulin, Cand. Sci. (Med.), Research Scientist, Laboratory of Radionuclide Research Methods</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">shipartphoto@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-4137-8912</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гончикова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Gonchikova</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гончикова Елена Валерьевна, врач функциональной диагностики, лаборатория радионуклидных методов исследования</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Elena V. Gonchikova, Functional Diagnostics Doctor, Laboratory of Radionuclide Research Methods</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">elenagoncikova8657@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-9223-7525</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Байсак</surname><given-names>Д. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Baisak</surname><given-names>D. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Байсак Дарья Маратовна, студент 4-го курса МБФ</p><p>634050, Томск, Московский тракт, 2</p></bio><bio xml:lang="en"><p>Darya M. Baisak, 4th-year Student, MBF</p><p>2, Moskovsky tract, Tomsk, 634050</p></bio><email xlink:type="simple">daryabaisak@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0007-0663-7992</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Куницин</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kunitsin</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Куницин Степан Андреевич, аспирант лаборатории радионуклидных методов исследования</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Stepan A. Kunitsin: Graduate Student, Laboratory of Radionuclide Research Methods</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">stepan.kunicin2012@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0883-466X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мочула</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Mochula</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мочула Андрей Викторович, канд. мед. наук, старший научный сотрудник, лаборатория радионуклидных методов исследования</p><p>634012, Томск, ул. Киевская, 111а</p></bio><bio xml:lang="en"><p>Andrey V. Mochula, Cand. Sci. (Med.), Senior Research Scientist, Laboratory of Radionuclide Research Methods</p><p>111a, Kievskaya str., Tomsk, 634012</p></bio><email xlink:type="simple">mochula.andrew@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научно-исследовательский институт кардиологии, Томский национальный исследовательский медицинский центр Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Cardiology Research Institute, Tomsk National Research Medical Center of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Сибирский государственный медицинский университет Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Siberian State Medical University of the Ministry of Health of the Russian Federation</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>13</day><month>07</month><year>2025</year></pub-date><volume>40</volume><issue>2</issue><fpage>104</fpage><lpage>112</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шипулин В.В., Гончикова Е.В., Байсак Д.М., Куницин С.А., Мочула А.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Шипулин В.В., Гончикова Е.В., Байсак Д.М., Куницин С.А., Мочула А.В.</copyright-holder><copyright-holder xml:lang="en">Shipulin V.V., Gonchikova E.V., Baisak D.M., Kunitsin S.A., Mochula A.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.sibjcem.ru/jour/article/view/2736">https://www.sibjcem.ru/jour/article/view/2736</self-uri><abstract><sec><title>Обоснование</title><p>Обоснование. У пациентов с необструктивным поражением коронарных артерий снижение резерва миокардиального кровотока (РМК) является ключевым патофизиологическим звеном. Неинвазивная оценка состояния микроциркуляции доступна очень ограниченному кругу учреждений, в отличие от рутинной ЭКГ-синхронизированной перфузионной сцинтиграфии миокарда (ЭКГ-ПСМ). Механическая диссинхрония (МД) является одним из перспективных дополнительных показателей ЭКГ-ПСМ. Однако на сегодня имеется крайне мало информации о ее сопоставлении с результатами измерения РМК, полученными по данным однофотонной эмиссионной компьютерной томографии (ОФЭКТ).</p><p>Цель и масштаб исследования: оценить потенциал МД, определенный с помощью ЭКГ-ПСМ, в выявлении пациентов со снижением РМК по данным динамической ОФЭКТ.</p></sec><sec><title>Материал и методы</title><p>Материал и методы. В исследовании приняли участие 62 пациента с необструктивным (&lt; 50%) поражением коронарных артерий, согласно данным мультиспиральной компьютерной (МСКТ)-коронароангиографии. Всем пациентам была проведена динамическая ОФЭКТ и рутинная ЭКГ-ПСМ с 99мТс-Технетрилом. По данным динамической ОФЭКТ вычислялись показатели миокардиального кровотока (МК) в покое и на фоне нагрузки, а также РМК. По данным ЭКГПСМ определялись показатели перфузии (SSS, SRS, SDS) и МД – HBW (ширина фазовой гистограммы, град.) и PSD (стандартное отклонение фазовой гистограммы, град.). Затем пациенты были разделены на 2 группы в зависимости от показателей РМК с пороговым значением 2,0.</p></sec><sec><title>Результаты</title><p>Результаты. В группу со сниженным РМК (РМК &lt; 2,0) вошли 30 пациентов, в группу с сохраненным РМК (РМК ≥ 2,0) – 32. Между группами отсутствовала разница в основных клинико-демографических показателях, но они различались по всем результатам измерения МД: HBWпокой – 64,8 (55,8; 86;4) и 50,4 (42,2; 57,6), р = 0,004; HBWнагрузка – 64,8 (50,4; 93;6) и 50,4 (50,4; 63,0), р = 0,03; PSDпокой – 17,2 (13,5; 22,4) и 12,9 (9,9; 14,0), р = 0,01; PSDнагрузка – 15,8 (13,7; 23,0) и 12,9 (11,6; 15,0), р = 0,01. Самым эффективным показателем, ассоциированным со снижением РМК &lt; 2,0, была HBW в покое, пороговое значение 57,6°; ОШ 1,07, ДИ (1,01; 1,12); р &lt; 0,001; AUC = 0,810.</p></sec><sec><title>Заключение</title><p>Заключение. МД, оцененная по данным ЭКГ-ПСМ, имеет взаимосвязь с показателями РМК, определенными по данным динамической ОФЭКТ, у пациентов с необструктивным поражением коронарных артерий. Наиболее выраженную ассоциацию с РМК имеет ширина фазовой гистограммы в состоянии функционального покоя. У пациентов с необструктивным поражением коронарных артерий при повышении значения HBW в покое &gt; 57,6 , по данным ЭКГ-ПСМ, можно заподозрить наличие сниженного РМК.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction: In patients with non-obstructive coronary artery disease, decreased myocardial blood flow reserve (MBFR) is a key pathophysiologic link. Noninvasive assessment of microcirculatory status is available to a very limited number of institutions, in contrast to routine gated myocardial perfusion imaging (gMPI). Mechanical dyssynchrony (MD) is one of the promising additional index of gMPI, but nowadays there are very few data on its comparison with MFR by SPECT.</p></sec><sec><title>Aim</title><p>Aim: To evaluate the potential of MD according to gMPI in identifying patients with decreased MBFR according to dynamic SPECT.</p></sec><sec><title>Material and Methods</title><p>Material and Methods. The study included 62 patients with non-significant (&lt;50%) coronary artery stenosis according to multislice computed tomography (MSCT) coronary angiography. All patients underwent dynamic SPECT and routine gMPI with 99mTc-technetril. Myocardial blood flow indices at rest and stress, as well as MBFR were evaluated according to dynamic SPECT data. Perfusion indices (SSS, SRS, SDS) and MD indices HBW (phase histogram width, grad.) and PSD (phase histogram standard deviation, grad.) were assessed according to gMPI. Patients were then divided into 2 groups depending on myocardial blood flow reserve indices with a threshold value 2.0.</p></sec><sec><title>Results</title><p>Results. 30 patients were included in the group with reduced MBFR (MBFR&lt;2.0) and 32 patients in the group with preserved MBFR (MFR ≥ 2.0). There was no difference in the main clinical and demographic parameters between the groups. The groups differed in all MD parameters: HBWrest, 64.8 (55.8; 86;4) and 50.4 (42.2; 57.6), p = 0.004; HBWstress, 64.8 (50.4; 93;6) and</p></sec><sec><title>50</title><p>50.4 (50.4;63.0), р = 0.03; PSDrest, 17.2 (13.5;22.4) and 12.9 (9.9;14.0), р = 0.01; PSDstress, 15.8 (13.7;23.0) and 12.9 (11.6;15.0), р = 0.01. The only independent predictor of decreased MBFR &lt;2.0 was HBW at rest &gt; 57.6o; OR 1.07; CI (1.01; 1.12); р &lt; 0.001; AUC = 0.810.</p></sec><sec><title>Conclusion</title><p>Conclusion. Mechanical dyssynchrony assessed by gMPI correlates with myocardial blood flow reserve according to dynamic SPECT in patients with non-obstructive coronary artery disease. The most pronounced association with MBFR has phase histogram bandwidth at rest. In patients with non-obstructive coronary artery disease, if HBW at rest is &gt; 57.6o according to ECG-PCM, a reduced myocardial blood flow reserve can be suspected.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>динамическая однофотонная эмиссионная компьютерная томография</kwd><kwd>ОФЭКТ</kwd><kwd>резерв миокардиального кровотока</kwd><kwd>ЭКГ-синхронизированная перфузионная сцинтиграфия миокарда</kwd><kwd>механическая диссинхрония</kwd></kwd-group><kwd-group xml:lang="en"><kwd>dynamic SPECT</kwd><kwd>myocardial blood flow reserve</kwd><kwd>gated SPECT</kwd><kwd>mechanical dyssynchrony</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 23-75-01085, https://rscf.ru/project/23-75-01085/</funding-statement><funding-statement xml:lang="en">The study was supported by Russian Science Foundation grant No. 23-75-01085, https://rscf. ru/project/23-75-01085/</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Del Buono M.G., Montone R.A., Camilli M., Carbone S., Narula J., Lavie C.J. et al. 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