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Accurate target volume delineation is crucial for the radiotherapy of tumors. Diffusion and perfusion magnetic resonance imaging (MRI) can provide functional information about brain tumors, and they are able to detect tumor volume and physiological changes beyond the lesions shown on conventional MRI. This review examines recent studies that utilized diffusion and perfusion MRI for tumor volume definition...
The key imaging parameter of number of diffusion gradient directions (NDGDs) in the protocol of diffusion tensor imaging (DTI) is significant in the acquisition of raw data. Up to date, the selection of NDGD in DTI is still in controversy for the optimized NDGD to observe 3D deterministic and probabilistic fiber trackings (FTs) of DTI in clinical evaluations. In this study, we evaluate the NDGDs of...
Background Cavernous sinus hemangiomas (CaSHs) are rare vascular lesions in the cavernous sinus(CS). Gamma Knife radiosurgery (GKS) provides a treatment modality alternative to microsurgery. This study was conducted to describe a new classification of CaSHs based on their magnetic resonance (MR) imaging findings and determine the efficacy and safety of GKS in a large series of CaSH patients. Methods...
For MR diffusion tensor imaging (DTI), the imaging parameter of Number of Diffusion Gradient Direction (NDGD) plays a great role in the acquisition of raw data. Up till now, a consensus hasn't been reached on the selection of NDGD in DTI protocols for the computation of anisotropy indices and the deterministic fiber tracking. In this paper, we proposes a scheme for optimizing the NGDG in clinical...
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