scholarly journals Automatic Segmentation of Metastatic Breast Cancer Lesions on 18F-FDG PET/CT Longitudinal Acquisitions for Treatment Response Assessment

Cancers ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 101
Author(s):  
Noémie Moreau ◽  
Caroline Rousseau ◽  
Constance Fourcade ◽  
Gianmarco Santini ◽  
Aislinn Brennan ◽  
...  

Metastatic breast cancer patients receive lifelong medication and are regularly monitored for disease progression. The aim of this work was to (1) propose networks to segment breast cancer metastatic lesions on longitudinal whole-body PET/CT and (2) extract imaging biomarkers from the segmentations and evaluate their potential to determine treatment response. Baseline and follow-up PET/CT images of 60 patients from the EPICUREseinmeta study were used to train two deep-learning models to segment breast cancer metastatic lesions: One for baseline images and one for follow-up images. From the automatic segmentations, four imaging biomarkers were computed and evaluated: SULpeak, Total Lesion Glycolysis (TLG), PET Bone Index (PBI) and PET Liver Index (PLI). The first network obtained a mean Dice score of 0.66 on baseline acquisitions. The second network obtained a mean Dice score of 0.58 on follow-up acquisitions. SULpeak, with a 32% decrease between baseline and follow-up, was the biomarker best able to assess patients’ response (sensitivity 87%, specificity 87%), followed by TLG (43% decrease, sensitivity 73%, specificity 81%) and PBI (8% decrease, sensitivity 69%, specificity 69%). Our networks constitute promising tools for the automatic segmentation of lesions in patients with metastatic breast cancer allowing treatment response assessment with several biomarkers.

2019 ◽  
Vol 33 (2) ◽  
pp. 329-330
Author(s):  
Maren Marie Sjaastad Andreassen ◽  
Pål Erik Goa ◽  
Torill Eidhammer Sjøbakk ◽  
Roja Hedayati ◽  
Hans Petter Eikesdal ◽  
...  

The original version of this article unfortunately contained a mistake in Fig. 6.


2014 ◽  
Vol 83 (10) ◽  
pp. 1925-1933 ◽  
Author(s):  
David Groheux ◽  
Elif Hindié ◽  
Michel Marty ◽  
Marc Espié ◽  
Domenico Rubello ◽  
...  

2017 ◽  
Vol 208 (2) ◽  
pp. 420-433 ◽  
Author(s):  
Sara Sheikhbahaei ◽  
Esther Mena ◽  
Anusha Yanamadala ◽  
Siddaling Reddy ◽  
Lilja B. Solnes ◽  
...  

2016 ◽  
Vol 57 (7) ◽  
pp. 1102-1104 ◽  
Author(s):  
K. Pinker ◽  
C. C. Riedl ◽  
L. Ong ◽  
M. Jochelson ◽  
G. A. Ulaner ◽  
...  

2020 ◽  
Author(s):  
Markus Kuksis ◽  
Yizhuo Gao ◽  
William Tran ◽  
Christianne Hoey ◽  
Alex Kiss ◽  
...  

Abstract Background Patients with metastatic breast cancer (MBC) are living longer, but development of brain metastases often limits their survival. We conducted a systematic review and meta-analysis to determine the incidence of brain metastases in this patient population. Methods Articles published from January 2000 to January 2020 were compiled from four databases using search terms related to: breast cancer, brain metastasis, and incidence. The overall and per patient-year incidence of brain metastases were extracted from studies including patients with HER2+, triple negative, and hormone receptor (HR)+/HER2- MBC; pooled overall estimates for incidence were calculated using random effects models. Results 937 articles were compiled, and 25 were included in the meta-analysis. Incidence of brain metastases in patients with HER2+ MBC, triple negative MBC, and HR+/HER2- MBC was reported in 17, 6, and 4 studies, respectively. The pooled cumulative incidence of brain metastases was 31% for the HER2+ subgroup (median follow-up: 30.7 months, IQR: 24.0 – 34.0), 32% for the triple negative subgroup (median follow-up: 32.8 months, IQR: 18.5 – 40.6), and 15% among patients with HR+/HER2- MBC (median follow-up: 33.0 months, IQR: 31.9 – 36.2). The corresponding incidences per patient-year were 0.13 (95% CI: 0.10 – 0.16) for the HER2+ subgroup, 0.13 (95%CI: 0.09 – 0.20) for the triple negative subgroup, and only 0.05 (95%CI: 0.03 – 0.08) for patients with HR+/HER2- MBC. Conclusion There is high incidence of brain metastases among patients with HER2+ and triple negative MBC. The utility of a brain metastases screening program warrants investigation in these populations.


2021 ◽  
Vol 28 (3) ◽  
pp. 2190-2198
Author(s):  
Dalia Kamel ◽  
Veronica Youssef ◽  
Wilma M. Hopman ◽  
Mihaela Mates

Background: In 2012, the American Society for Clinical Oncology (ASCO) identified five key opportunities in oncology to improve patient care, recommending against imaging tests for the staging of patients with early breast cancer (EBC) at low risk for metastases. Similarly, the European Society of Medical Oncology (ESMO) guideline does not support radiological staging in asymptomatic EBC (aEBC). The purpose of this study was to assess local practice and outcomes of staging investigations (SIs) in aEBC at the Cancer Centre of Southeastern Ontario (CCSEO). Methods: A retrospective electronic and paper chart review was undertaken to identify all aEBC patients treated at our institution between January 2012 and December 2014. Patients with pathological staging of T1-T2 and N0-1 with any receptor status were included. We collected patient demographics, treatment and pathologic tumor characteristics. The use and outcomes of initial and follow-up SIs were recorded. Data were analyzed to determine associations between the use of SIs and clinical characteristics (chi-square tests, independent samples t-tests and Mann–Whitney U tests). Results: From 2012 to 2014, 295 asymptomatic EBC patients were identified. The mean age was 64, 81% were postmenopausal and 76% had breast conserving surgery. Stage distribution was as follows: stage I 42%, stage IIA 37% and stage IIB 21%. Receptor status was as follows: ER+ 84%, HER2+ 13% and triple negative 12%. Adjuvant chemotherapy was received by 36%, Trastuzumab by 10% and endocrine therapy by 76% of patients. Baseline SIs were performed in 168 patients (57%) for a total of 332 tests. Overt metastatic disease was found in five patients (one bone scan and four CT scans). Seventy-one out of the 168 patients (42%) who received initial staging imaging underwent 138 follow-up imaging tests, none of which were diagnostic for metastases. Nine patients with suspicious CT findings underwent biopsies, of which four were malignant (one metastatic breast cancer and three new primaries). Factors significantly associated with SI were as follows: younger age (p = 0.001), premenopausal status (p = 0.01), T2 stage (p < 0.001), N1 stage (p < 0.001), HER2 positive (p < 0.001), triple negative status (p = 0.007) and use of adjuvant chemotherapy (p < 0.001). Conclusions: Over a 3-year period at our institution, more than 50% of aEBC patients underwent a total of 470 initial and follow-up staging tests, yielding a cancer diagnosis (metastatic breast cancer or second primary cancer) in four patients. We, therefore, conclude that routine-staging investigations in aEBC patients have low diagnostic value, supporting current guidelines that recommend against the routine use of SI in this population.


2017 ◽  
Vol 44 ◽  
pp. 16-21 ◽  
Author(s):  
Michael H. Antoni ◽  
Jamie M. Jacobs ◽  
Laura C. Bouchard ◽  
Suzanne C. Lechner ◽  
Devika R. Jutagir ◽  
...  

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