in present pet/ct scanners, pet attenuation correction is performed by relying on the information given by ct scan. in the ct-based attenuation correction methods, dual-energy technique (dect) is the most accurate approach, which has been limited due to the increasing patient dose. in this feasibility study, we have introduced a new method that can implement dual-energy technique with only a si...

objective(s): in this study, we aimed to describe the characteristics of portal vein tumor thrombosis (pvtt), complicating hepatocellular carcinoma (hcc) in contrast-enhanced fdg pet/ct scan. methods: in this retrospective study, 9 hcc patients with fdg-avid pvtt were diagnosed by contrast-enhanced fluorodeoxyglucose positron emission tomography/computed tomography (fdg pet/ct), which is a comb...

Monte Carlo (MC) methods are increasingly being utilized to support several aspects of commissioning and clinical operation of ion beam therapy facilities. In this contribution two emerging areas of MC applications are outlined. The value of MC modeling to promote accurate treatment planning is addressed via examples of application of the FLUKA code to proton and carbon ion therapy at the Heide...

Background and Aim: Pulmonary thromboembolism is an important clinical problem in the patients after major surgeries and is often difficult to diagnose because of nonspecific clinical symptoms. Diagnosis of pulmonary embolism is based on medical imaging methods. The aim of this study was to evaluate the results of CT pulmonary angiographies of the patients with primary clinical diagnosis of pul...

Corresponding Author: Muhamad Taufik Abdullah Department of Multimedia, Faculty of Computer Science and Information Technology, University Putra Malaysia, 43400, UPM Serdang, Malaysia Email: [email protected] Abstract: In automated pulmonary nodules extraction and lung disease diagnosis by image processing techniques, image segmentation is utilized as a primary and the most essential st...

background: the aim of this study is to evaluate the geometry of the distal femur and the proximal tibia in the osteoarthritic knee using 3d reconstructive ct scan imaging. methods: 449 patients with knee osteoarthritis were treated surgically in our center with patient-specific technology total knee arthroplasty. preoperatively, all the patients underwent a ct scan according to a standard prot...

introduction: using pan or selective computed tomography (ct) scan in management of multiple trauma patient is a matter of debate. therefore, the present study was designed aiming to compare the findings of pan and selective ct scans in management of multiple trauma patients. method: this is a prospective cross-sectional study, on patients presented to the emergency department (ed) of shohadaye...

conclusions headache, seizure, and trauma are the main reasons for ct scan requests. about 12% of the brain ct scans were abnormal. being knowledgeable about the indications of imaging, unnecessary imaging can be prevented, and consequently, its risks can be minimized. patients and methods in the present case series, demographic information and ct scan reports of 167 patients referred to taba r...

Hepatosplenic candidiasis is a fungal infection, which mostly affects patientswith hematologic malignancies such as leukemia. The pathogenesis of thisinfection is not clear yet, and the liver is the most commonly affected organ.Diagnosis of hepatosplenic candidiasis can be only established via biopsy,since computed tomography (CT) scan, ultrasonography, and magneticresonance imaging (MRI) yield...