Showing papers in "Computerized Medical Imaging and Graphics in 1991"

TL;DR: This procedure can be used in a preliminary diagnosis in brain surgery without much effort of users, because of whole procedure including threshold selection and segmentation is performed automatically for rendering a three-dimensional image of soft-tissue's surface on a graphic terminal.

TL;DR: The application of NASA multispectral image processing technology for analysis of Magnetic Resonance Imaging scans has been studied and a statistical evaluation of mult ispectral analysis application to MRI scans of the head has been performed.

TL;DR: 12 methods to compute a shaded surface display of radiological 3D density volumes are evaluated, finding the best quality is obtained by zero-crossing detection, subvoxel localization, and 3D-gradient orientation.

TL;DR: MRI may be promising as a noninvasive method for differentiating radiation fibrosis from local recurrent NPC, however, the signal intensity pattern of the tumor is not specific and may be seen in radiation edema and infection.

TL;DR: A case of hepatic abscess secondary to a fishbone penetrating the gastric antrum wall was diagnosed preoperatively by CT and confirmed at surgery and the value of CT in the preoperative diagnosis of cases of this kind is emphasized.

TL;DR: Preliminary results have found the restricted Coulomb Energy (RCE) neural network model to have a testing accuracy of 90.6% which is approximately 10% better than any of the other techniques investigated.

TL;DR: The Mahalanobis distance measurement and a related F-statistical value demonstrate that breast lesions are statistically separable from normal breast tissue, and Malignant lesions are shown to be separability from benign lesions based on quantitative shape measures.

TL;DR: This is the first surgically proven case of lupus mesenteric arteritis resulting in bowel ischemia that is demonstrated on CT before and after medical therapy.

TL;DR: The most common presentation of hypothalamic hamartoma was a small and well defined mass in the inferior aspect of the hypothalamus, showing isointensity on T1 weighted images and hyperintensity on T2 weighted images compared with the gray matter.

TL;DR: A method to reconstruct 3-D shapes of each part of the heart in a voxel space using several sets of cross-sectional images on transverse, coronal, and sagittal planes of theheart in a cardiac cycle is proposed.

TL;DR: The database structure, storage architecture, file placement strategies, and administration considerations of the UCLA PACS are discussed.

TL;DR: Developing PACS development for all CT's and MR's which allows communication between a newly developed outpatient facility, the hospital, and the remote research facility in addition to Pediatric Radiology and the Coronary Care Unit is completed.

TL;DR: This paper covers some of the recent concepts in designing a digital imaging workstation in a multimodality Picture Archiving and Communications Systems (PACS) network and general guidelines of a graphics oriented user interface are proposed.

TL;DR: The historical background of the concepts Hospital information System, Radiology Information System, and Picture Archiving and Communication System (HIS, RIS, PACS) is presented and the conceptual relation between the three is discussed.

TL;DR: The extent and anatomic depiction of soft-tissue involvement as depicted on CT helps surgeons choose the appropriate surgical approach, which may affect future spinal stability.

TL;DR: This paper outlines the diverse Picture Archiving and Communication Systems (PACS) networking implementation strategies at the University of California at Los Angeles, theUniversity of Florida, and the Universityof Kansas.

TL;DR: The hardware and software aspects of HU-PACS in its working state are described and usefulness of PACS concludes paper.

TL;DR: PASC was taken from a research system supporting only radiology tasks to one extended to clinical use, and has been used in clinical work for 3 years.

TL;DR: This method increased the rate of detection of cerebral lesions by contrast enhancement from 30 to 90% by calculating on a pixel-by-pixel basis the first mathematical moment of the monitored time-density curves about injection time which corresponds to regional arm brain circulation time (rABCT).

TL;DR: This work demonstrates the feasibility of developing a "high information content" display which will aid in the diagnosis and analysis of the atherosclerotic disease process and will permit detailed and quantitative studies to assess the effectiveness of therapies.

TL;DR: This case supports the theory that at least some thymic cysts arise secondary to irradiation, which was thought to be related to either mediastinal irradiation or cystic changes within aThymic focus of Hodgkin's disease.

TL;DR: Two patients with congenital ptosis and extraocular muscle fibrosis are described and marked atrophy of the left inferior rectus muscle and bilateral changes in all extraocular muscles were seen.

TL;DR: Magnetic resonance imaging clearly showed the longitudinal dimension of the tumor as well as the infiltrative extension into the spinal cord without any invasive procedure.

TL;DR: The method combines the techniques of dynamic elastic contour interpolation, spline theory, and quadratic-variation-based surface interpolation to automatically reconstructing a three-dimensional object from serial cross-sections.

TL;DR: A Picture Archiving and Communication System (PACS) was installed in the Medical Intensive Care Unit of the Hospital of the University of Pennsylvania and the time interval between obtaining portable chest images and taking image dependent actions decreased when the PACS was used, however, about 40% of the action decisions were made without a radiologist's consultation.

TL;DR: The clinical and computed tomographic findings in 100 consecutive adult nontraumatic intraventricular hemorrhage (IVH) cases are analyzed and patients with small thalamic and caudate hemorrhage with intra ventricular blood had good clinical outcome; whereas patients with large hematomas had poor outcome.

TL;DR: A general architecture of colour displays is exposed, comparing the features of the most commonly used devices, and the basic operations performed by the look-up table editor developed at University of Geneva are presented.

TL;DR: High resolution computed tomography studies can exquisitely determine the extent of these lesions and pinpoint areas of cortical breakthrough as well as involvement of the teeth, invaluable in surgical planning for excision ofThese lesions.

TL;DR: MRI can be used as a noninvasive modality for the follow-up of patients' status post repair of thoracic aortic dissection with both magnetic resonance and angiography.

TL;DR: The joint was operated conservatively and most of the calcifications were removed leaving the patient symptom free, and the importance of an accurate preoperative diagnosis by use of CT scan is stressed.