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Clinical Trial Summary

To Estimate diagnostic value of tomo synthesis for breast mass lesions characterization ( shape, margin, and density, detail of mass margins, Differences in mass density , Tumor measurement,.)


Clinical Trial Description

Breast lesions are observed in about 20% of female patients1. However this percentage is likely to represent an underestimation of the true incidence of these lesions because breast imaging (MRI, ultrasound or mammography) was performed in only a small number of the patients of these series. The lesions are possibly palpable and most of the time asymptomatic2. In current clinical practice, mammography is the standard imaging modality for breast cancer screening and diagnosis.3 The advantages of mammography include a reasonably high sensitivity, high resolution, and low patient dose. However, a mammogram still suffers from being a two-dimensional projection of a three-dimensional object. The resulting overlap of normal fibro glandular tissue cannot only obscure the detection and characterization of lesions but also present false alarms leading to unnecessary recall studies.4-6 To address this key limitation of mammography, 3D x-ray imaging techniques have been developed, including dedicated breast computed tomography (CT), which takes cone-beam x-ray projection images of the uncompressed breast in a full 360° scan, thus enabling reconstruction of a 3D breast volume 6-10 Digital x-ray tomosynthesis11,12(often abbreviated as "tomo") for the breast is a form of limited-angle cone-beam CT.13-14 A restricted number of projection images are acquired in an arc in the conventional mammography projection geometry, while the breast is compressed adjacent to the detector. Although some information is lost due to angular under sampling, breast tomo still creates a 3D volume at a dose comparable to that of traditional mammography. Moreover, the tomo device itself is usually based on an existing full-field digital mammography (FFDM) system. Although compression is required, this ensures proper posterior tissue coverage, immobilization to minimize motion artifacts, and a low dose.15The similarity of tomo to FFDM in terms of patient positioning, image acquisition, and aspects of image display suggests that there is minimal retraining required for the technologist or radiologist.16 As such, breast tomo synthesis is a 3D breast imaging modality with the potential to replace mammography17 . DBT offers potential advantages for evaluating masses, areas of architectural distortion, and asymmetries compared with those of conventional 2D mammographic images 18 In diagnostic settings, DBT improves work-up efficiency and the selection of patients recommended for biopsy, thereby reducing associated costs and additional imaging studies including additional mammographic views and unnecessary biopsies 19 ;


Study Design


Related Conditions & MeSH terms


NCT number NCT04863833
Study type Observational
Source Assiut University
Contact Asmaa Abdelmonem
Phone +201123153571
Email asmaaelshahaby@gmail.com
Status Not yet recruiting
Phase
Start date September 1, 2021
Completion date October 1, 2023

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