introduction: patient safety culture is an important part of improvement in the safety of health care. knowing its present status is required for development of safety culture. the present study aimed to evaluate the current status of patient safety culture in hospitals of three central provinces of iran. method: the present cross-sectional study was performed in teaching hospitals of tehran, a...

State of the art radiation treatment methods such as hypo-fractionated stereotactic body radiation therapy (SBRT) can successfully destroy tumor cells and avoid damaging healthy tissue by delivering high-level radiation dose that precisely conforms to the tumor shape. Though these methods work well for stationary tumors, SBRT dose delivery is particularly susceptible to organ motion, and few te...

infection-related cerebral venous sinus thrombosis (cvst) is a rare cerebral vascular diseases which has no pathognomonic sign or definite diagnostic approach. it is crucial to early suspect and recognize the disease to lower morbidity and mortality of it. however, its low incidence and atypic presentation often leads to misdiagnosis and treatment delay which increase complications and mortalit...

Respiratory motion and the associated deformations of abdominal organs tumors are essential information in clinical applications. However, inter- intra-patient multi-organ complex have not been statistically formulated, whereas single organ widely studied. In this paper, we introduce a deformation library its application to reconstruction based on shape features multiple organs. Statistical mot...

An Extremely rare case of periscaphoid and perilunate dislocation of the wrist is reported. The reported case is a young man with trauma following a motor cycle falling down. At first referral closed reduction and six weeks of long arm cast had been performed. The patient reffered to our hospital because of painful and limited range of motion. He underwent open reduction and internal fixatio...

background diabetes is a common problem with severe complications. the control of diabetes needs a close and honest relationship between patients and health professionals. the views of these two groups might influence the professional relationship. objectives the purpose of this study was to identify the views of diabetic patients versus the views of diabetic care professionals on the content o...

On-board imager (OBI) based cone-beam computed tomography (CBCT) has become available in radiotherapy clinics to accurately identify the target in the treatment position. However, due to the relatively slow gantry rotation (typically about 60 s for a full 360◦ scan) in acquiring the CBCT projection data, the patient’s respiratory motion causes serious problems such as blurring, doubling, streak...

We prospectively evaluated real-time ultrasound speckle tracking for monitoring soft tissue motion for image-guided radiotherapy. Two human volunteers and 1 patient with a proven hepatocellular carcinoma, who was being prepared for radiation therapy treatment, were scanned using a clinical ultrasound scanner modified to acquire and store radiofrequency signals. Scans were performed of the liver...

PURPOSE Kilovoltage cone-beam computed tomography (CBCT) is widely used in image-guided radiation therapy for exact patient positioning prior to the treatment. However, producing time series of volumetric images (4D CBCT) of moving anatomical structures remains challenging. The presented work introduces a novel method, combining high temporal resolution inside anatomical regions with strong mot...

Motion is a serious artifact in Cardiac nuclear imaging because the scanning operation takes a long time. Since reconstruction algorithms assume consistent or stationary data the quality of resulting image is affected by motion, sometimes significantly. Even after adoption of the gold standard MoCo(R) algorithm from Cedars-Sinai by most vendors, heart motion remains a significant challenge. Als...