Lung tumor motion due to respiration poses a challenge in the application of modern three-dimensional conformal radiotherapy. Direct tracking of the lung tumor during radiation therapy is very difficult without implanted fiducial markers. Indirect tracking relies on the correlation of the tumor's motion and the surrogate's motion. The present paper presents an analysis of the correlation betwee...

We studied the feasibility of evaluating tumor control probability (TCP) reductions for tumor motion beyond planned gated radiotherapy margins. Tumor motion was determined from cone-beam CT projections acquired for patient setup, intrafraction respiratory traces, and 4D CTs for five non-small cell lung cancer (NSCLC) patients treated with gated radiotherapy. Tumors were subdivided into 1 mm sec...

The application of a virtual dental patient with dynamic occlusion during esthetic restoration in digital workflow is described. An intraoral scanner, facial jaw motion analyzer, and cone beam computed tomography were used to transfer data construct the patient. With aid patient, predictability accuracy can increase throughout treatment, simplifying clinical evaluation prosthesis adjustment imp...

We studied the motion perception, including form and meaning generated by motion, in a hemianopic patient who also had visual perceptual impairments in her seeing hemifield as a result of a lesion in ventral extrastriate cortex. She was unable to recognise 2- or 3-dimensional forms, and even borders, generated by motion alone, failed to recognise mimed actions or the Johannson 'biological motio...

INTRODUCTION: Patient motion, especially respiratory and cardiac motion, leads to artifacts which could damage the quality of Magnetic Resonance Imaging (MRI) and make the resulting diagnosis less accurate. If such motion occurs during MRI acquisitions, it has been shown that, knowing this motion, it is possible to invert the process of artifact production and to reconstruct a motion compensate...

Clinical observations indicate that during critical care at the hospitals, patients sleep positioning and motion affect recovery. Unfortunately, there is no formal medical protocol to record, quantify, and analyze patient motion. There is a small number of clinical studies, which use manual analysis of sleep poses and motion recordings to support medical benefits of patient positioning and moti...

A novel depth-layer based patient motion compensation approach for 2D/3D overlay applications is introduced. Depth-aware tracking enables automatic detection and correction of patient motion without the iterative computation of digitally reconstructed radiographs (DRR) frame by frame. Depth layer images are computed to match and reconstruct 2D features into 2D+ space. Using standard 2D tracking...

Respiratory motion poses significant challenges in image-guided interventions. In emerging treatments such as MR-guided HIFU or MR-guided radiotherapy, it may cause significant misalignments between interventional road maps obtained pre-procedure and the anatomy during the treatment, and may affect intra-procedural imaging such as MR-thermometry. Patient specific respiratory motion models provi...

 Osteoid osteoma is a benign bone tumor and accounts for 10% of benign tumors. Almost any bones can be involved but half of cases involving femur or tibia. Osteoid osteoma is a rare tumor of the scapula with only 18 reported cases in the literature. We presented a case of osteoid osteoma of the scapula in right shoulder in angle of coracoid and geloneid in a 34- year old woman. She had right ra...

  Dislocation of the first carpometacarpal (CMC) is a rare occurrence. Treatment of this dislocation varies from closed reduction and casting to ligament repair. Neglected dislocation or incomplete reduction of the 1st CMC cause chronic instability and painful arthritis, muscle imbalance and decreased grip force. In our study 6 patients is evaluated that were visited in less than 24 hours from ...