Assessment of the efficiency of new bismuth composite shields in radiation dose decline to breast during chest CT

ConclusionResults showed that new bismuth-silicon composite shields have good potential to breast dose reduction with smallest noise for diagnosis in chest CT.
Source: The Egyptian Journal of Radiology and Nuclear Medicine - Category: Nuclear Medicine Source Type: research

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Abstract A significant number of patients receiving breast-conserving surgery (BCS) for invasive carcinoma and ductal carcinoma in situ (DCIS) may need reoperation following tumor-positive margins from final histopathology tests. All current intraoperative margin assessment modalities have specific limitations. As a first step towards the development of a compact system for intraoperative specimen imaging based on edge illumination X-ray phase contrast, we prove that the system's dimensions can be reduced without affecting imaging performance. We analysed the variation in noise and contrast to noise ratio (CNR) wi...
Source: Physics in Medicine and Biology - Category: Physics Authors: Tags: Phys Med Biol Source Type: research
Radiotherapy after breast-conserving surgery or mastectomy has clinical benefits including reducing local recurrence and improving overall survival. Deep inspiration breath-hold (DIBH) technique using the Abches system is an easy and practical method to reduce radiation dose to the heart and lungs. This retrospective study was proposed to investigate the dosimetric difference between Abches system and free breathing technique in treating left-sided breast cancer. Eligible patients underwent computed tomography (CT) scans to acquire both free breathing (FB) and DIBH technique data using the Abches. For each patient, both F...
Source: Medicine - Category: Internal Medicine Tags: Research Article: Observational Study Source Type: research
Conclusions: This study is the first to demonstrate a dose-response relationship between risk of complications and near Dmax, where hypofractionated regimen or boost RT can play an important role. Rigorous RT-quality assurance program and modification of dose constraints could be considered as a critically important component for ongoing trials of hypofractionation. Based on our findings, we initiated a multi-center retrospective study (KROG 18-04) and a prospective study (NCT03523078) to validate our findings. Introduction Breast reconstruction provides important psychosocial, cosmetic, and quality of life benefits ...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
CONCLUSIONSFor patients with Luminal/HER2 negative breast cancer, the combination of the imaging features of the tumor and the mammary gland, obtained with 18F-FDG PET-CT at baseline and after the first cycle of NAC, may allow the physician to evaluate the probability of BCS.
Source: European Journal of Radiology - Category: Radiology Source Type: research
For localized cancers, breast-conserving therapy (BCT), including limited surgery and adjuvant whole breast radiotherapy, is equivalent to mastectomy in regard to oncologic outcomes while enabling breast preservation [1]. Oncoplastic techniques have been increasingly used worldwide to improve cosmesis [2 –4]. Those techniques involve, at minimum, a simple volume displacement (level 1 oncoplastic technique), as the breast parenchyma is approximated to close the lumpectomy cavity [5]. In so doing, the seroma is limited in size, and it often becomes invisible on a CT-scan.
Source: Radiotherapy and Oncology - Category: Radiology Authors: Tags: Original Article Source Type: research
AbstractBackgroundRoughly 23% of breast conserving surgery (BCS) patients undergo a second re-excision procedure due to pathologically positive surgical margins. We investigated the feasibility and potential value of micro-Computed Tomography (micro-CT) as a surgical margin guidance tool during BCS.MethodsA cohort of 32 BCS specimens was prospectively imaged with a pre-clinical micro-CT system upon arrival in the surgical pathology laboratory. Reconstructed micro-CT scans were evaluated retrospectively by an experienced breast radiologist, who provided binary determinations whether lesions extended to the specimen margin. ...
Source: Breast Cancer Research and Treatment - Category: Cancer & Oncology Source Type: research
CONCLUSIONBreast-ACC among women is characterized by ER-negative/PR-negative expression, rare regional lymph node involvement, a favorable prognosis with excellent survival, and absence of associated cancers. These findings reinforce the importance of tailored treatments for breast-ACC and the apparent heterogeneity of basal-like breast cancers.
Source: International Journal of Surgery Case Reports - Category: Surgery Source Type: research
Conclusion This research shows the possibility of objectively evaluating the volume change of pedicled latissimus dorsi muscle flaps after breast reconstruction. The findings will be helpful in designing the size of the flaps to use on defects after breast-conserving surgery. [...] Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.Article in Thieme eJournals: Table of contents  |  Abstract  |  Full text
Source: Journal of Reconstructive Microsurgery - Category: Surgery Authors: Tags: World Society for Reconstructive Microsurgery 2017 Source Type: research
ConclusionsWhole lumpectomy specimen micro-CT scanning is a promising technique for intraoperative margin assessment in BCS. Intraoperative quick feedback on the margin status could potentially lead to a reduction in the number of reoperations.
Source: European Journal of Surgical Oncology (EJSO) - Category: Surgery Source Type: research
Abstract BACKGROUND: We evaluated the effectiveness of visual feedback (VF) on radiotherapy with deep inspiration breath-holding (DIBH), and reviewed the dose for organs at risk (OARs). METHODS: Respiratory motions during DIBH for 15 s were monitored during planning computed tomography (CT)-scanning and simulation for 40 patients after breast-conserving surgery from June 2007 to February 2008. For 22 of 40 patients, a goggle-type liquid crystal display monitor was used for VF. The opposing tangential field was planned. The prescribed dose was 50.0 Gy in 25 fractions. RESULTS: The mean differenc...
Source: Breast Cancer - Category: Cancer & Oncology Authors: Tags: Breast Cancer Source Type: research
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