X-ray computed tomography (CT) systems with high resolution (also known as micro-CT systems) have been developed over the last two decades and have been used with great success in small animal studies. A micro-CT scanner is based on the same underlying physical principle as a clinical CT scanner, but it is designed for higher-resolution imaging. It produces three-dimensional (3D) tomographic da...

a 64-year-old male presented with neurofibromatosis 1 and cushing’s syndrome. clinically he was over weight, depressed with extensive skin bruising and hypertension. his 24 hours urinary metanephrines, urinary 5hiaa, gut peptides and chromgranin levels were normal. his renal function and renal mri scan was also normal. his cortisol failed to suppress on overnight dexamethsone suppression test. ...

Patients with superior semicircular canal dehiscence (SSCD) may have conductive hearing loss (CHL) with normal middle ear (ME). A patient with CHL and normal tympanic membrane at otoscopy underwent tympanotomy for presumed otosclerosis but had negative intraoperative findings. A high-resolution computed tomography (CT) scan of the temporal bone performed a few years later showed the absence of ...

background: imaging studies performed in research centers suggest a high prevalence of brain structural abnormalities in patients with epilepsy. however, the results of research studies may not be directly applicable to general clinic, because they may perform on patients with high probability of cerebral abnormalities. on the other hand, more advanced modalities are likely to be used in resear...

Industrial CT (computerized tomography) uses a series of 2-dimensional images taken at specific intervals around the entire sample. Basically any type of industrial CT system uses three principal components: an X-ray tube, an X-ray detector, and a rotational stage. Everything is enclosed within a radiation shielding steel/lead/steel cabinet that typically ranges between four and 10 feet cubed. ...

Industrial CT (computerized tomography) uses a series of 2-dimensional images taken at specific intervals around the entire sample. Basically any type of industrial CT system uses three principal components: an X-ray tube, an X-ray detector, and a rotational stage. Everything is enclosed within a radiation shielding steel/lead/steel cabinet that typically ranges between four and 10 feet cubed. ...

This paper introduces a novel approach for automatic detection of a type of diffuse lung pattern, known as honeycombing, from high resolution computed tomography (HRCT) scans of the lung. The algorithm, which is based on frequency spectrum analysis of the HRCT image, assesses and combines outputs from a pre-defined Gabor filter bank to form a preliminary lesion detection mask. Several morpholog...

Content-based image retrieval (CBIR) refers the ability to retrieve images on the basis of image content. Given a query image, the goal of a CBIR system is to search the database and return the n most visually similar images to the query image. In this paper, we describe an approach to CBIR for medical databases that relies on human input, machine learning and computer vision. Specifically, we ...