PURPOSE Large area x-ray imagers based on complementary metal-oxide-semiconductor (CMOS) active pixel sensor (APS) technology have been proposed for various medical imaging applications including digital breast tomosynthesis (DBT). The low electronic noise (50-300 e-) of CMOS APS x-ray imagers provides a possible route to shrink the pixel pitch to smaller than 75 μm for microcalcification detec...

OBJECTIVE This study aimed at investigating the characteristic imaging findings of the columnar cell lesions (CCLs) of the breast via mammography (MG), ultrasonography (US), and magnetic resonance imaging (MRI). MATERIALS AND METHODS The MG, US and MRI findings of 72 patients with histopathological diagnosis of CCLs were retrospectively evaluated. Histopathologically, the CCLs were divided in...

Breast cancer remains one of the deadliest diseases among women. Microcalcifications can be an early indicator of a breast cancer. Thus when they are present their detection during a screening test is very crucial. But due to their small size and low contrast in mammographies their detection is difficult. Therefore many computer aided diagnosis mathods have been developped to help and assist re...

Background/Objective: Thyroid nodules are a common finding, especially in our country. In this study, we evaluated the role of conventional ultrasonography (US) and color doppler sonography (CDS) in assessment of cold thyroid nodules. Materials and Methods: Ninety-seven patients with a cold thyroid nodule were examined by US and CDS before thyroidectomy .On US, the presence of a halo sign, hypo...

A series of renal biopsy specimens taken at the time of percutaneous nephrolithotomy were investigated for the presence and location of foci of microcalcification. Calcium was found in 18 of 25 (72%) of biopsy specimens from stone formers and in only seven of 30 (23%) of control biopsy specimens. This may indicate defective intrarenal handling of calcium as plasma calcium concentration was norm...

OBJECTIVE To evaluate the performance and reproducibility of a computeraided detection (CAD) system in mediolateral oblique (MLO) digital mammograms taken serially, without release of breast compression. MATERIALS AND METHODS A CAD system was applied preoperatively to the fullfield digital mammograms of two MLO views taken without release of breast compression in 82 patients (age range: 33-83...

Mammography is the most efficient method for breast cancer early detection. Clusters of microcalcifications are the early sign of breast cancer and their detection is the key to improve prognosis of breast cancer. Microcalcifications appear in mammogram image as tiny localized granular points, which is often difficult to detect by naked eye because of their small size. Automatic and accurately ...

AIM To retrospectively evaluate the diagnostic value of high-frequency ultrasound for the detection of microcalcifications screening in BI-RADS 4a patients. PATIENTS AND METHODS A total of 52 women (mean age 60.5±6.5 years) classified as BI-RADS 4a with microcalcifications, but without associated masses after X-ray mammography (XRM) underwent ultrasound (US) examination (B-mode, ApliPure™ , a...

To develop a conventional ultrasound (US) modified Thyroid Imaging Reporting and Data System (mTI-RADS) to stratify the malignancy risk of thyroid nodule in coexisting Hashimoto's thyroiditis (HT). The study included 138 malignant and 292 benign thyroid nodules confirmed by cytological or histopathological results. The risk score (RS) for each significant US feature was estimated by multiplying...

OBJECTIVE The purpose of this study was to describe the sonographic findings of Zenker diverticula. METHODS This study included 6 patients (age, 26-70 years; average, 55.3 years). Three cases were detected incidentally by thyroid sonograms, and 3 cases were transferred from other hospitals for aspiration of a thyroid nodule. All the sonograms and medical records were reviewed retrospectively....