Volume 29, Issue 1 (Iran South Med J 2026)
Iran South Med J 2026, 29(1): 26-39 |
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Derakhshan S, Moassesghafari B, Roshani D. Perfusion Distribution Changes in Gated-SPECT Myocardial Perfusion Imaging after Chemotherapy in Patients with Breast Cancer. Iran South Med J 2026; 29 (1) :26-39
URL: http://ismj.bpums.ac.ir/article-1-2507-en.html
URL: http://ismj.bpums.ac.ir/article-1-2507-en.html
1- Department of Radiotherapy, School of Paramedical Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran , siamak.derakhshan@muk.ac.ir
2- Department of Radiology, School of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
3- Department of Epidemiology and Biostatistics, School of Medicine, Kurdistan University of medical Sciences, Sanandaj, Iran
2- Department of Radiology, School of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
3- Department of Epidemiology and Biostatistics, School of Medicine, Kurdistan University of medical Sciences, Sanandaj, Iran
Abstract: (9 Views)
Background: Early detection of chemotherapy-induced cardiotoxicity plays an important role in preventing its progression. This study aimed to investigate early changes in myocardial perfusion distribution after chemotherapy with doxorubicin in patients with breast cancer.
Materials and Methods: Resting myocardial perfusion imaging was performed before and after chemotherapy in 61 women with breast cancer without a history of cardiovascular disease or radiotherapy. The standard deviation and 95% bandwidth of the histogram of the mean uptake in the segments of Bull's-eye image were compared before and after chemotherapy. The relationship of changes in these indices with the cumulative dose of doxorubicin, age and body mass index of the patients were also investigated.
Results: The mean percentage of uptake in the Bull's-eye segments was 69.60 before and 68.10 after chemotherapy (P>0.05). The standard deviation and 95% bandwidth of histogram of the mean segmental uptake before chemotherapy were 5.48 and 18.58, respectively, which increased to 5.56 and 19.52, respectively, after chemotherapy. This increase was mainly seen in patients who received a cumulative dose of more than 400 mg of doxorubicin. However, none of these changes were statistically significant (P>0.05). No significant association was observed between changes in left ventricular perfusion distribution and either age or body mass index.
Conclusion: Chemotherapy did not produce significant early changes in left ventricular myocardial perfusion. However, further studies with pixel-based myocardial perfusion imaging are recommended.
Materials and Methods: Resting myocardial perfusion imaging was performed before and after chemotherapy in 61 women with breast cancer without a history of cardiovascular disease or radiotherapy. The standard deviation and 95% bandwidth of the histogram of the mean uptake in the segments of Bull's-eye image were compared before and after chemotherapy. The relationship of changes in these indices with the cumulative dose of doxorubicin, age and body mass index of the patients were also investigated.
Results: The mean percentage of uptake in the Bull's-eye segments was 69.60 before and 68.10 after chemotherapy (P>0.05). The standard deviation and 95% bandwidth of histogram of the mean segmental uptake before chemotherapy were 5.48 and 18.58, respectively, which increased to 5.56 and 19.52, respectively, after chemotherapy. This increase was mainly seen in patients who received a cumulative dose of more than 400 mg of doxorubicin. However, none of these changes were statistically significant (P>0.05). No significant association was observed between changes in left ventricular perfusion distribution and either age or body mass index.
Conclusion: Chemotherapy did not produce significant early changes in left ventricular myocardial perfusion. However, further studies with pixel-based myocardial perfusion imaging are recommended.
Keywords: Perfusion distribution, Cardiotoxicity, Chemotherapy, Myocardial perfusion scan, Breast cancer
Type of Study: Original |
Subject:
nuclear medicine
Received: 2026/04/12 | Accepted: 2026/06/10 | Published: 2026/07/8
Received: 2026/04/12 | Accepted: 2026/06/10 | Published: 2026/07/8
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