Correlation Between Quantitative Parameters Obtained by Dual Energy Spectral CT and Prognostic Histopathological Factors and Biomarkers in Breast Cancer.

Rationale And Objectives: To investigate the correlation between quantitative parameters obtained by dual energy spectral computed tomography (DESCT) and various histopathological factors and biomarkers associated with the prognosis of breast cancer.

Materials And Methods: Quantitative parameters such as iodine content (IC), normalized IC (nIC), iodine enhancement (IE) and normalized IE (nIE) were measured on virtual monochromatic images and iodine mapping images obtained from DESCT in 116 female breast cancer patients. The relationship between these parameters and prognostic biomarkers such as estrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor 2 (HER2) status and Ki67 levels, as well as the correlation with histological grade (HG), lymphovascular invasion (LVI), and metastatic axillary lymphadenopathy (LAP) were evaluated.

The efficacy of abbreviated breast MRI protocols using 1.5 T MRI in the preoperative staging of newly diagnosed breast cancers.

Purpose: To determine the efficacy of abbreviated breast magnetic resonance imaging (MRI) protocols using 1.5 T MRI in the preoperative staging of newly diagnosed breast cancers.

Methods: Eighty patients who underwent 1.

High-resolution diffusion-weighted imaging compared with conventional diffusion-weighted imaging and dynamic contrast-enhanced magnetic resonance imaging with regard to image quality and assessment of breast cancer morphology.

Purpose: To evaluate the image quality and tumor morphology depiction ability of high resolution (HR) diffusion- weighted imaging (f-DWI) in comparison to conventional DWI (c-DWI) and dynamic contrast- enhanced magnetic resonance imaging (DCE-MRI) in the primary breast cancer setting.

Methods: The f-DWI, c-DWI, and DCE-MRIs of 160 malignant breast masses were evaluated retrospectively by two independent radiologists. Data on image quality [sharpness, distortion, and perceived signalto- noise ratio (SNR)], apparent diffusion coefficient (ADC) value, lesion size, and tumor morphology (shape, margin, and internal pattern) obtained on f-DWI, c-DWI, and DCE-MRI were compared.

The validity and clinical utility of axillary ultrasonography-guided fine needle aspiration biopsy in detection of nodal metastasis in early-stage breast cancer patients: a retrospective single-center experience.

Background: Assessing the validity and clinical utility of axillary ultrasonography (AUS)-guided fine needle aspiration biopsy (FNAB) in detection of nodal metastasis during preoperative axillary investigation in comparison to the histopathologic diagnosis in early-stage breast cancer.

Methods: A total of 279 operated primary breast cancer patients (age: 55.3 ± 12.

The role of optic nerve sheath diameter measurement on CT in differentiating transient ischemic attack and acute ischemic stroke.

Objective: This study aimed to determine if optic nerve sheath diameter (ONSD) measurement on computed tomography could differentiate transient ischemic attack (TIA) from acute ischemic stroke (AIS). Both TIA and AIS are the rings of the same disease chain. To exclude hemorrhagic stroke and stroke mimics in these patients, brain computed tomography (CT) remains the first step imaging modality.

A comparison study of dual-energy spectral CT and 18F-FDG PET/CT in primary tumors and lymph nodes of lung cancer.

Purpose: We aimed to investigate whether there is a correlation between dual-energy spectral computed tomography (DESCT) and 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) parameters in primary tumor and metastatic lymph nodes in patients with newly diagnosed lung cancer.

Methods: Primary tumor and metastatic lymph nodes of 68 patients diagnosed with lung cancer were evaluated retrospectively with 18F-FDG PET/CT and DESCT imaging. The histologic subtypes were adenocarcinoma (n=29), squamous cell carcinoma (SCC) (n=26), small cell lung cancer (SCLC) (n=11), and large cell neuroendocrine cancer (LCNEC) (n=2).

The Association of Postvoiding Residual Volume, Uroflowmetry Parameters and Bladder Sensation.

Purpose: To investigate whether postvoiding residual bladder volume (PVR) and uroflowmetry parameters associate with bladder sensation in male patients with bladder outlet obstruction (BOO) and to find out the reliable time of these examinations.

Materials And Methods: Sixty men with bladder outlet obstruction underwent transabdominal ultrasound in order to measure postvoiding residual volume and uroflowmetry. At the first day, PVR was measured while the patients had mild bladder sensation.

Focal hypersteatosis: a pseudolesion in patients with liver steatosis.

Purpose: We aimed to describe ultrasonography (US), computed tomography (CT), and magnetic resonance imaging (MRI) findings of focal hypersteatosis (FHS).

Methods: We retrospectively reviewed our database for patients with hypersteatosis. Over a 5-year period (February 2005 to September 2010) a total of 17 321 patients underwent abdominal CT scan and 28 patients were determined to have FHS.

Contribution of diffusion-weighted imaging to conventional MRI for detection of haemorrhagic infarction in ovary torsion.

Background: To assess the role of DWI in differentiation haemorrhagic ovary infarction from non-haemorrhagic one.

Methods: For this prospectively designed study, of 117 female patients who presented with acute lower quadrant pain and underwent MRI for suspicion of ovary torsion, results of only 29 patients (mean age, 24.7; SD, ±5.

Contribution of diffusion-weighted MR imaging in follow-up of inflammatory appendiceal mass: Preliminary results and review of the literature.

Objective: We aimed to search the contribution of diffusion-weighted imaging (DWI) in follow-up of patients with acute appendicitis associated inflammatory appendiceal mass (IAM). DWI was used as a monitoring imaging method to assess the response of medical treatment.

Materials And Methods: 19 patients (mean age, 37+-13.