Spherical harmonic cross-correlation is a robust registration technique that uses the normals of two overlapping point clouds to bring them into coarse rotational alignment. This registration technique however has a high computational cost as spherical harmonics need to be calculated for every normal. By binning the normals, the computational efficiency is improved as the spherical harmonics ca...

OBJECTIVE To evaluate image quality of female pelvic computed tomography (CT) scans reconstructed with the adaptive statistical iterative reconstruction (ASIR) technique combined with low tube-voltage and to explore the feasibility of its clinical application. MATERIALS AND METHODS Ninety-four patients were divided into two groups. The study group used 100 kVp, and images were reconstructed w...

Four-dimensional computed tomography (4D CT) is used to account for respiratory motion in radiation treatment planning, but artifacts resulting from the acquisition and postprocessing limit its accuracy. We investigated the efficacy of three experimental 4D CT acquisition methods to reduce artifacts in a prospective institutional review board approved study. Eighteen thoracic patients scheduled...

flutamide is a non-steroidal antiandrogen commonly used in the treatment of prostate cancer. severe hepatotoxicity occurs in few patients, yet may be fatal. to date, none of the reported cases of flutamide hepatotoxicity has demonstrated thrombocytopenia and chronic liver disease. we report the case of a 55-year-old male with prostatic adenocarcinoma who developed liver failure after six months...

Computed Tomography (CT) with three-dimensional reconstructions was studied in cranio-facial deformities. The pre-operative and follow-up study of cranio-facial deformities can be performed with spiral CT. With this modality quantitative information can be provided in order to measure the entity of airway obstruction and the result of procedure affecting bone structures.

One strategy was compression ultrasonography, followed by anticoagulation in case of positive results (high probability ventilation-perfusion (VQ) scans) or by VQ scan or spiral computed tomography (CT) in case of negative results. Low probability VQ scans resulted in no treatment, whereas high probability VQ scans resulted in anticoagulation. Intermediate tests were followed by a second test (...

Postoperative hypoxemia can be a challenging diagnostic and management dilemma for the clinician. We present here a case of postoperative hypoxemia following laparoscopic gastric bypass surgery secondary to presumed pulmonary embolism complicated with a patent foramen ovale. The diagnostic pitfalls associated with a negative spiral computed tomography scan and the impact of coexisting medical c...

One strategy was compression ultrasonography, followed by anticoagulation in case of positive results (high probability ventilation-perfusion (VQ) scans) or by VQ scan or spiral computed tomography (CT) in case of negative results. Low probability VQ scans resulted in no treatment, whereas high probability VQ scans resulted in anticoagulation. Intermediate tests were followed by a second test (...

Until recently, conventional magnetic resonance (MR) imaging of the pancreas was limited by motion artifacts (respiratory, vascular, and bowel peristaltic) and poor spatial resolution. Recent technique innovations in MR imaging hardware and software (fast imaging) have allowed these problems to be overcome with acquisition images similar to those obtained with spiral computed tomography (CT) (F...