[PDF] Top 20 Perfusion CT for Head and Neck Tumors: Pilot Study

... on two occasions, or between the ipsilateral and con- tralateral ICA as the input artery. Although the sta- tistical test failed to show a significant difference in these mentioned parameters, it was able to reveal ... See full document

... and neck SCCA and may potentially find application in the dual-technique assessment (which can be rapidly per- formed in the same setting) of untreated head and neck SCCAs that could determine the ... See full document

... in head and neck ...deconvolution-based CT perfusion soft- ware (Perfusion ...within tumors), and sur- rounding normal ...the perfusion source images of the tumor margins, ... See full document

... dedicated head and neck acquisition (3-4 bed po- sitions, 2 minutes per bed position) from skull vertex to carina was performed 60 minutes following a 400 MBq injection of intravenous ...The CT ... See full document

... with head and neck tumors who underwent preoperative MR imaging examinations between 2005 and ...present study due to poor MR images (severe susceptibility and/or motion artifacts) or prior ... See full document

... tion, Glostrup, Denmark). All slides were incubated in Antigen Retrieval Solution (Dako Cytomation) for 40 minutes in a 92°C water bath with a buffer change midway and allowed to cool to room temperature for 20 minutes. ... See full document

... It is already known that elevated blood flow on CTP is correlated with angiogenesis, microvessel density (MVD) and increased tumor vascularity, and is has been found to be correlated with tumor recurrence and the tumor’s ... See full document

... row CT scanners. Currently available 16-section CT scanners can cover 2 cm of the brain, which is increased to 4 cm by using a 64-section CT ...noncontrast CT head study is ... See full document

... the study of anatomic changes during RT with CTP parameters, by improving radi- ation dose coverage to tumor, or by RT dose escalation to improve ...the head and neck region. In our study, the ... See full document

... There are several limitations to our study. Our data were prospectively obtained in a small number of patients from a single institution. Statistical significance was tested by use of exact tests to address the ... See full document

... Of the 28 cases of nasopharyngeal carcinoma in our series,82.1% presented with cervical metastases. Other symptoms like epistaxis, nasal twang in voice, secretory otitis media, etc., were also found. Cases of cranial ... See full document

... Several approaches have been studied, including Monte Carlo simulations, blocker-based or beam-stop techniques, analytic calculations, and collimator shadow estimation. 22-24 Perhaps the most theoretically robust ... See full document

... emerging CT technology, which has potential ap- plications for imaging of high-contrast structures in the head and neck as well as dentomaxillofacial ...for head and neck CBCT are in ... See full document

... TABLE 1: Head and Neck Infections and Tumors in Patients with AIDS Pathology Infection: Bacterial neck Pasteurella , Bacteriodes , Pseudomonas , Streptococcus , Staphylococcus Probable b[r] ... See full document

... of head and neck metastatic tumors ...distant head and neck metastatic tumors, 4 cases were related to oral and maxillofacial ...of neck, oral mucosa ulcer and dryness ... See full document

... this study, of 4 lesions studied with MR imaging, the signal intensity of 2 solid le- sions was isointense and hyperintense to that of mus- cle on T1-weighted and T2-weighted images, respec- tively, favoring the ... See full document

... A 74-year-old female patient presented in our depart- ment with a large right-sided neck mass. The mass was painless, well circumscribed, relatively mobile and soft during the palpation. The skin over the tumor ... See full document

... Conclusions. There are many different reasons and concepts for altered gene expression in tumors and surgical margin tissue. Tumor heterogeneity and its microenvironment are undoubtedly linked to the biology of  ... See full document

... undergoing neck dissection and good rates of long-term control of locoregional ...of neck dissection specimens after chemoradiotherapy as evidence of persistent disease (this method is known to overestimate ... See full document

... The study of angiogenesis in tumor tissue is extremely valuable for determining the biological characteristics of tumors and evaluating treatment efficacy, prognosis, and other ...malignant tumors ... See full document