Magnetic resonance imaging (MRI) uses a constant magnetic field and radio waves, a non-invasive method for examining tissues, organs and the skeletal system. Advantages and disadvantages of MRI are not fully understood; however, it has been commonly used in the diagnosis of skeleton and bone diseases (such as disk and spinal disorders, joint disorders (arthritis), bone tumours and tissues...

We present a case of a 15-year-old boy with osteoblastic osteosarcoma of the left distal femur. The patient was referred to bone scan for initial staging. On planar bone scan, there is increased uptake of 99mTc-MDP (99mTc-methylene diphosphonate) in the left distal femur. There are also multiple sites of abnormal tracer uptake projecting to the thoracic cage, initially assumed to be localized i...

errors and variations in interpretation can happen in clinical imaging. few studies have examined the biased effect of clinical information on reporting of brain ct scans. in a blinded double crossover design, we studied whether three radiologists were biased by clinical information when making ct scan diagnosis of the brain. three consultant radiologists in three rounds with at least a one-mon...

We present the complete construction methodology for an anatomically accurate mouse phantom made using materials which mimic the characteristics of tissue, lung, and bone for radiation dosimetry studies. Phantoms were constructed using 2 mm thick slices of tissue equivalent material which was precision machined to clear regions for insertion of lung and bone equivalent material where appropriat...

A 56-year-old woman was found hypothermic on her bathroom floor with a scalp wound, laboratory results indicating long lie. She lethargic and had difficulties finding words. CT scan revealed symmetric posterior temporal lobe hypodensities punctiform hemorrhagic transformation (figure). Radiologic differential diagnosis included encephalitis,1 but CSF showed normal cytosis, xanthochromia, elevat...

A 55-year-old male presented with a nine-month history of gradually enlarging, painless mass in the right external auditory canal associated with hearing loss and occasional bleeding. Examination demonstrated complete obstruction of the outer 1/3 of the external auditory canal by a firm, pink, rubbery mass. CT scan of the temporal bone showed tumor mass with no evidence of bone destruction. The...

BACKGROUND AND PURPOSE MDCT has some specific scan parameters that may systematically increase or decrease radiation dose to patients. This study explored the scan protocol parameters that impact radiation dose in temporal bone MDCT and determined the optimal scan parameters that balance radiation dose with diagnostic image quality. MATERIALS AND METHODS Using exsomatized cadaveric heads, tra...