84 ● M a r t 2 0 0 1 C omputed tomographic angiography (CTA) is a technique that has evolved in a rapidly changing interplay of hardware and software advances. CT scan times are becoming ever shorter, now allowing imaging of larger segments of arterial anatomy during circulation of the intravenous bolus of contrast material. Multidetector (or multislice) CT is the most recent dramatic advance t...

OBJECTIVES This study sought to describe a protocol for myocardial perfusion imaging using dipyridamole stress, with 128-slice dual-source computed tomography (CT), and to assess the ability of CT myocardial perfusion imaging (MPI) to detect abnormal flow reserve and infarction in comparison with nuclear MPI (NMPI). BACKGROUND CT MPI has not been previously described with the 128-slice dual-s...

Objectives: Presence/absence of cervical lymph node metastasis plays a critical role in prognosis and survival of patients with oral squamous cell carcinoma (SCC). This study was designed to assess the diagnostic accuracy of computed tomography (CT) scan for detection of cervical lymph node metastasis in oral SCC in comparison with histopathological analysis after neck dissection Methods: In...

methods multidetector ct-scan and explorative laparotomy of the patients with blunt abdominal trauma were assessed retrospectively. characteristics of the injuries were categorized on the basis of the american association for the surgery of trauma (aast) grading system and the findings were analyzed using kappa test. results the findings of 35 patients were analyzed. according to the kappa test...

BACKGROUND The use of computed tomographic (CT) scans in the United States (US) has increased more than 3-fold since 1993 to approximately 70 million scans annually. Despite the great medical benefits, there is concern about the potential radiation-related cancer risk. We conducted detailed estimates of the future cancer risks from current CT scan use in the US according to age, sex, and scan t...

Post stroke dementia is one of the most common complications of stroke that is preventable and relatively treatable too. The purpose of the study is comparison between the positive findings in brain CT scan and brain perfusion SPECT. 15 patients who were complicated by dementia after cerebrovascular accident and also 5 patients as a control group enrolled in this study. Brain CT scan and ...

Three-dimensional Computed Tomography (3-DCT)was performed in 2l patients for characterization of 29 aneurysms of va rious sizes and locations. and determining the relationsrup between the vascular and bony structures. These findings are com· pared with results ofaxial CT. digital subtraction angiography and

introduction: differentiating between ischemic cardiomyopathy (icm) and idiopathic dilated cardiomyopathy (idcm) is important as coronary revascularization can improve prognosis in the ischemic subgroup. due to inherent problems of coronary angiography in patients with depressed ejection fraction (ef) introducing a noninvasive tool to diagnose those who will benefit from angiography seems to be...