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...

BACKGROUND Temporal artery (TA) biopsy is the current standard for diagnosing temporal arteritis, but has limited sensitivity. Colour duplex ultrasonography is a newer, non-invasive method of diagnosing temporal arteritis. METHODS A systematic review was performed of trials comparing TA biopsy with duplex ultrasonography. Duplex results (halo sign, stenosis or vessel occlusion) were compared ...

The aim of this study was to present the clinical and high-resolution CT scan findings of angioinvasive pulmonary aspergillosis (APA) in 12 patients who underwent allogeneic bone marrow transplantation (BMT). The CT scans were reviewed by three chest radiologists who assessed the pattern and distribution of findings by consent. There were 7 (58%) female and 5 (42%) male patients, with aging bet...

Histoplasmosis is a common endemic mycosis. Although most infections in immunocompetent individuals are self-limiting, some patients develop severe pneumonitis or other types of chronic pulmonary infection. Specific imaging findings depend on the organisms involved, the underlying condition of the patient, and his condition after immune depleting procedures. The disease process in immunocompete...

BACKGROUND AND PURPOSE The purpose of this study was to describe typical ultrasonographic findings of vertebral arteries in patients affected by giant cell arteritis. METHODS Color duplex sonography was used to asses the cervical arteries within 24 hours from stroke onset in 1237 patients. Vertebral arteritis was considered if concentric, homogeneous, and smooth hypoechogenic mural thickening...

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...

CASE REPORT Case 1 A 50-year-old female intravenous drug user presented with neck pain and electrical sensations in the upper and lower limbs on neck flexion (Lhermitte’s sign). There was no history of head and neck trauma but she reported tonsilopharyngitis one to two weeks prior to consultation. Her physical examination was normal except for a positive Lhermitte’s sign. Magnetic resonance ima...

The possibility of manipulating the tunneling magnetoresistance (TMR) of antiferromagnetic nanostructures is predicted in the framework of ab initio calculations. By the example of a junction composed of an antiferromagnetic dimer and a spin-polarized scanning tunneling microscopy tip we show that the TMR can be tuned and even reversed in sign by lateral and vertical movements of the tip. Moreo...

The interpretation of optical spectra requires thorough comprehension quantum mechanics, especially understanding the concept angular momentum operators. Suppose now that a transformation from laboratory-fixed to molecule-attached coordinates, by invoking correspondence principle, induces reversed operator identities. However, foundations mechanics and mathematical implementation specific symme...

BACKGROUND Targeted therapies are the standard treatment in patients with metastatic renal cell carcinoma (mRCC) and are known to cause adverse pulmonary events. Organizing pneumonia (OP) with its various manifestations in computed tomography (CT) has therefore lately received more attention. PURPOSE To describe the spectrum of CT patterns of OP in patients with mRCC receiving targeted therap...