BACKGROUND To investigate the feasibility and accuracy of dose calculation in cone beam CT (CBCT) data sets. METHODS Kilovoltage CBCT images were acquired with the Elekta XVI system, CT studies generated with a conventional multi-slice CT scanner (Siemens Somatom Sensation Open) served as reference images. Material specific volumes of interest (VOI) were defined for commercial CT Phantoms (CA...

Background: The standard treatment for locally advanced non-small cell lung cancer (LA-NSCLC) is represented by concomitant chemo-radiotherapy followed consolidation with durvalumab that ensures a 5-year survival of 46%. However, the risk radiotherapy-induced pneumonia (RIP) almost 10–15%. Complete cardiological examination also usually performed during cardiopulmonary pre-treatment evaluation ...

Megavoltage cone-beam CT (MVCBCT) is an imaging technology that provides a 3D representation of the patient in treatment position. Because it is a form of x-ray tomography, MVCBCT images give information about the attenuation coefficients of the imaged tissues, and thus could be used for dose calculation. However, the cupping and missing data artifacts seen on MVCBCT images can cause inaccuraci...

The aim of this study was to evaluate the morbidity and mortality in patients with operable stage II and III rectal cancers within one or two months after surgery, who has been treated pre-operatively with short course radiotherapy. Twenty-eight patients with rectal adenocarcinoma, consecutively referred to the Cancer Institute of Imam Khomeini Hospital from March 2009 to March 2010, were selec...

to minimize renal radiation in abdomical radiotherapy, shielding of the kidneys is essential. ivp-simulator is used as an standard method. in this study, we used 99mtc-dmsa to localize and shield the kidneys and we compared this method with ivp-simulator. the size of the kidneys was proven to be larger as compared with ivp method. the mean of the overlap percentage was 81.88 in right and 82.89 ...

Radiologic Procedure Rating Comments RRL* CT abdomen and pelvis without and with contrast 2 ☢ ☢ ☢ ☢ X-ray abdomen 2 ☢ ☢ CT abdomen and pelvis without contrast 2 ☢ ☢ ☢ ☢ CT abdomen and pelvis with contrast 2 ☢ ☢ ☢ ☢ X-ray contrast enema 2 ☢ ☢ ☢ X-ray cystography 2 ☢ ☢ ☢ MRI pelvis without and with contrast 2 MRI may be indicated if urethral diverticulum is suspected. O MRI pelvis without contras...

Cervical cancer is the most common malignancy in Indian women. Cervical cancer usually spread by local extension and through the lymphatics to the retroperitoneal lymph nodes. Direct invasion of muscles by primary growth is more common than by metastatic involvement. We present a case of carcinoma of the cervix post radiotherapy to pelvis who on follow up presented with biceps muscle metastases...

We report a case of 64-year-old male with prostate cancer and coagulation disorder presented with abdominal distension. He underwent abdomen and pelvis ultrasound for assessment of ascites, which showed localized fluid collections identified at the left and right iliac fossa. After that, non enhanced abdomen and pelvis CT scan was performed and showed heterogeneous organized collections identif...