Zobrazeno 1 - 10
of 98
pro vyhledávání: '"W Sewchand"'
Autor:
W. Sewchand, T. Lei
Publikováno v:
IEEE Transactions on Medical Imaging. 11:62-69
For pt.I, see ibid., vol.11, no.1, p.53.61 (1992). Based on the statistical properties of X-ray CT imaging given in pt.I, an unsupervised stochastic model-based image segmentation technique for X-ray CT images is presented. This technique utilizes th
Publikováno v:
COMPSAC
A system of programs which has been written for inclusion into a modified TP-11 treatment planning system is described. The programs permit direct interaction between CT images and treatment planning routines. The precision, ease and speed of localiz
Autor:
T. Lei, W. Sewchand
Publikováno v:
Sixth Multidimensional Signal Processing Workshop.
Summary form only given. A stochastic model-based image segmentation technique that utilizes the tone descriptor for object detection and recognition has been developed. The image regions are characterized by region-dependent constant mean (average-g
Publikováno v:
IEEE Conference on Nuclear Science Symposium and Medical Imaging.
The performance of image analysis depends on the quality of the image. A good image-quality criterion is the theoretical information content (IC) defined by C.E. Shannon. Shannon's formula is valid on some preconditions. The authors validate the use
Autor:
Tianhu Lei, W. Sewchand
Publikováno v:
ICIP (3)
A new signal processing method is developed for image region detection and segmentation. The proposed technique formulates the region detection problem in a multidimensional signal processing framework such that a signal structure similar to sensor-a
Autor:
Tianhu Lei, W. Sewchand
Publikováno v:
Proceedings of 16th Annual International Conference of the IEEE Engineering in Medicine and Biology Society.
Various imaging modalities such as MRI, X-ray CT, PET/SPECT, and MR-angiography are used for brain imaging. The authors provides a non-model-based image analysis technique for these imaging modalities. In this approach, the brain tissue type and orga
Autor:
Tianhu Lei, W. Sewchand
Publikováno v:
Proceedings of 1994 IEEE Nuclear Science Symposium - NSS'94.
A new signal processing method is developed for PET and SPECT image region detection and segmentation. The proposed technique formulates the region detection problem in a multidimensional signal processing framework such that a signal structure simil
Publikováno v:
Radiology. 191(2)
A technique is presented for computed tomography (CT)-guided interstitial catheter placement and treatment planning for high-dose-rate brachytherapy. In a 66-year-old woman with adenocarcinoma of unknown origin that had metastasized to the right iliu
Publikováno v:
International Journal of Radiation Oncology*Biology*Physics. 54:282
Publikováno v:
Acta Radiologica: Oncology. 22:353-359
Carcinoma arising from the common hepatic duct is unique in its clinical course and is difficult to manage due to its dismal prognosis. The case reported and the treatment reflected not only the highly selective process but also the innovation of the