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Analytical model for clustered vehicular ad hoc network analysis
Raghavendra Pal,Arun Prakash,Rajeev Tripathi,Dhananjay Singhb 한국통신학회 2018 ICT Express Vol.4 No.3
Clustering of vehicles is an important technique to reduce the high mobility effect of vehicles. This paper proposes an analytical model to evaluate the performance of a clustered vehicular ad hoc network (VANET). The analytical model is developed to evaluate three important parameters, namely packet delivery ratio, throughput, and delay. The results obtained from the analytical model are also accompanied by simulation results. This model can be further extended by researchers working on clustered VANET scenarios and will be helpful in modeling their protocols or algorithms. Furthermore, this model can verify the simulation results obtained from any network simulator.
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Unusual Uptake of Prostate Specific Tracer <sup>68</sup>Ga-PSMA-HBED-CC in a Benign Thyroid Nodule
Damle, Nishikant Avinash,Tripathi, Madhavi,Chakraborty, Partha Sarathi,Sahoo, Manas Kumar,Bal, Chandrasekhar,Aggarwal, Shipra,Arora, Geetanjali,Kumar, Praveen,Kumar, Rajeev,Gupta, Ravikant The Korea Society of Nuclear Medicine 2016 핵의학 분자영상 Vol.50 No.4
$^{68}Ga$-Prostate specific membrane antigen- N,N′-bis[2-hydroxy-5-(carboxyethyl)benzyl]ethylenediamine-N,N′-diacetic acid- positron emission tomography/computed tomography or 68 Ga- HBED-CC-PSMA PET/CT, popularly known as PSMA PET/CT, is able to detect a small volume of recurrent prostate carcinoma (PC) when there is a prostate specific antigen (PSA) rise on follow-up after prostatectomy or other definitive treatment for PC. The use of PSMA PET/CT in the initial staging in PC is uncertain at this time. Clinical studies are underway to define its exact role in the management of the disease. At the same time it is important to be aware of unexpected sites of uptake of this ligand. We present here the case of a 62-year-old male patient who underwent prostatectomy for adenocarcinoma prostate. He also had a long-standing left solitary thyroid nodule (STN). Four months after surgery, he had a rising trend in serum PSA levels on three occasions, but the absolute value was less than 4 at all times. He underwent a $^{68}Ga$-PSMA-HBED-CC PET/CT, but it did not reveal any recurrent/metastatic site of disease. However, there was increased tracer uptake in the left STN. Fine needle aspiration cytology revealed features of atypia of undetermined significance, Bethesda category III. The patient underwent a left hemithyroidectomy and the histopathology showed features of a follicular adenoma.
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