BACKGROUND To study the set-up errors, PTV margin and toxicity of cone beam CT (CBCT) guided hypofractionated radiotherapy with active breathing control (ABC) for patients with non-small cell lung cancer (NSCLC) or metastatic tumors in lung. METHODS 32 tumors in 20 patients were treated. Based on the location of tumor, dose per fraction given to tumor was divided into three groups: 12 Gy, 8 G...

Background: Considering the late ossification potential of spheno-occipital synchondrosis (SOS), it can be used as a tool to estimate age in adolescents. The time SOS fusion is known vary different populations. Objectives: This study aimed assess degree Iranian individuals, using cone-beam computed tomography (CBCT) scan. Patients and Methods: CBCT images 240 patients (126 females 114 males), a...

Les déplacements accidentels des dents de sagesse du maxillaire supérieur dans divers régions anatomiques sont rares. Nous avons effectué la recherche littérature sur ce sujet manière systématique en utilisant PubMed et DOAJ. Il n’existe pas d’illustration accessible gratuitement pour les voies supérieurs imagées par le CT scan ou CBCT à part déplacement vers fosse infra-temporale ptérygopalati...

BACKGROUND Aim of this study was to comparatively evaluate the accuracy of respiration-correlated (4D) and uncorrelated (3D) cone beam computed tomography (CBCT) in localizing lipiodolized hepatocellular carcinomas during stereotactic body radiotherapy (SBRT). METHODS 4D-CBCT scans of eighteen HCCs were acquired during free-breathing SBRT following trans-arterial chemo-embolization (TACE) wit...

Background: Our aim was to analyze the effects of set-up errors on dose distribution in radiotherapy treatment for lung cancer by using kilovoltage cone-beam CT (CBCT). Materials and Methods: In this study, we used a Varian IX linear accelerator system perform CBCT scans 30 patients before radiotherapy. Subsequently, image matched with planned CT, left right (LR), top bottom (SI), front back (A...

The absence of a ground truth for internal motion in clinical studies has always been challenge to evaluate developed methods extract respiratory especially during 60-second cone-beam CT (CBCT) scan Image-Guided Radiotherapy Treatment (IGRT). unavailability gold standard led this study present methodology manually track on clinically acquired CBCT projection data set over 360° view angle. track...

BACKGROUND To investigate for prostate cancer patients the comparison of 'in-vivo' measured portal dose images (PDIs) with predictions based on a kilovoltage cone-beam CT scan (CBCT), acquired during the same treatment fraction, as an alternative for pre-treatment verification. For evaluation purposes, predictions were also performed using the patients' planning CTs (pCT). METHODS To get reli...

Needle fracture during dental local anesthetic injections is a rare but significant, potentially serious complication. Various approaches for the location and removal of broken needles have been described; however, there are several difficulties concerns related to potential complications critical anatomic challenges peculiar head neck region. In this case, we describe diagnostic utilized in lo...

AIM Dental implants have emerged as a new treatment modality for the majority of patients complaining of missing teeth. Bone quantity and bone quality are among various factors which ensure the longevity of dental implant in the patient's mouth. The assessment of cortical bone thickness of the outer layer and the cancellous bone density by cone beam computed tomography (CBCT) has proved benefic...

An 11-year-old female in the late mixed dentition presented to the Department of Orthodontics, University of Pennsylvania School of Dental Medicine, for treatment of upper and lower crowding. A supernumerary tooth was observed in the upper left first premolar region, but none of the twodimensional radiographs was able to accurately depict the size or anatomy of the tooth (Fig. 1). Because the p...