An approach for automatic classification of computed tomography (CT) medical images is presented in this paper. A vast amount of CT images are produced in modern hospitals due to advances of multi-slice Computed Tomography (CT) Scan which handles up to 64 slices per scan. So, an input image based automatic medical image retrieval system is now a necessity. In this paper, Coiflet wavelets are us...

Semantic variant primary progressive aphasia (svPPA), a well-known subtype of the frontotemporal dementia often shows peculiar clinical features and structural neuroimage findings. To strengthen accuracy diagnosis, amyloid positron emission tomography-computed tomography (PET-CT) might be helpful. However, in patients with late-onset svPPA, an admixture various neuropathology would interfere di...

Overexposures in computed tomography: In several institutions, overexposures have occurred during use of x-ray computed tomography (CT) for brain perfusion studies to identify 10 the neurological consequences of strokes and other events. In some cases, patients received exposures that were several times greater than necessary. The overexposures were caused by use of inappropriate CT protocols f...

The lengthy and tortuous journey, the unstable positioning of the colon and rectum, and variations in intestinal wall thickness during intestinal peristalsis have brought about significant difficulties for computed tomography (CT) diagnosis. Glucose metabolism is unstable in the colon and rectum, and smooth muscle peristalsis, gland secretion, spasms, and inflammation can also cause abnormal me...

Fever of unknown origin is still a medical challenge. Ga single photon emission computed tomography/computed tomography images are commonly used to evaluate the final diagnosis of fever of unknown origin. We presented a case of fever of unknown origin undergone Ga scintigraphy and an intra-abdominal Ga avid tumor was detected which suspected to be a neoplasm. Further contrast enhanced computed ...

background : the one-third middle cerebral artery (1/3 mca) method and alberta stroke program early computed tomography score (aspects) were used to detect significant early ischemic changes on brain computed tomography (ct) of patients with acute stroke. we designed the persian early ct score (pects) and compared it with the above systems.   methods: the tomograms were chosen from the stroke d...