نتایج جستجو برای: radiotherapy beam scanning
تعداد نتایج: 319526 فیلتر نتایج به سال:
Radiotherapy offers an alternative to steroid therapy for idiopathic inflammatory orbital pseudotumours. Twenty-four orbits were treated with radiotherapy, of which 75% responded adequately. There were no significant complications and no recurrences during the average follow-up time of 22.3 months (1-50 months). Biopsy, CT scanning, and steroid response of orbital pseudotumours can be helpful i...
Oculomotor disturbances commonly occur as manifestations of Graves’ Oohthalmomthv. We investieated the outcome of this disorderfollowing e&ernal-beam orbital radiotherapy. We conducted a prospective study on 15 patients to assess the extent of ophthalmopathy by clinical evaluation, and measurement of the amplitude of gaze and the thickness of the extraocular muscles on computed axial tomography...
introduction: this study was carried out to investigate calcific tissue formation against mineral trioxide aggregate (mta) after pulp capping. materials and methods: the pulps of six teeth from four dogs were exposed and capped with mta. after extraction each tooth was sectioned into halves. each half was then further sectioned in the mesiodistal or buccolingual direction. calcified tissue of t...
Background: In order to deliver the precise dose to the target in radiotherapy, absorbed dose to water at the reference point should be assessed. When the calibration procedure is performed for a reference dosimeter in the 60Co beam of a Secondary Standard Dosimetry Laboratory (SSDL), the total uncertainty in absorbed dose to water (Dw) is estimated to be approximately 1.5%. This study attempts...
Oculomotor disturbances commonly occur as manifestations of Graves’ Oohthalmomthv. We investieated the outcome of this disorderfollowing e&ernal-beam orbital radiotherapy. We conducted a prospective study on 15 patients to assess the extent of ophthalmopathy by clinical evaluation, and measurement of the amplitude of gaze and the thickness of the extraocular muscles on computed axial tomography...
Oculomotor disturbances commonly occur as manifestations of Graves’ Oohthalmomthv. We investieated the outcome of this disorderfollowing e&ernal-beam orbital radiotherapy. We conducted a prospective study on 15 patients to assess the extent of ophthalmopathy by clinical evaluation, and measurement of the amplitude of gaze and the thickness of the extraocular muscles on computed axial tomography...
The ultimate check of the actual dose delivered to a patient in radiotherapy can only be achieved by using in vivo dosimetry. This work reports a pilot study to test the applicability of a thermoluminescent dosimetric system for performing in vivo entrance dose measurements in external photon beam radiotherapy. The measurements demonstrated the value of thermoluminescent dosimetry as a treatmen...
Oculomotor disturbances commonly occur as manifestations of Graves’ Oohthalmomthv. We investieated the outcome of this disorderfollowing e&ernal-beam orbital radiotherapy. We conducted a prospective study on 15 patients to assess the extent of ophthalmopathy by clinical evaluation, and measurement of the amplitude of gaze and the thickness of the extraocular muscles on computed axial tomography...
BACKGROUND/AIMS A major drawback of laser endoscopy in the palliation of malignant dysphagia is the need for repeated treatments. This study was designed to test whether external beam radiotherapy would reduce the necessity for repeated laser therapy. PATIENTS/METHODS Sixty seven patients with inoperable oesophageal or gastric cardia cancers and satisfactory swallowing after initial laser rec...
Beam scanning data collected on the tomotherapy linear accelerator using the TomoScanner water scanning system is primarily used to verify the golden beam profiles included in all Helical TomoTherapy treatment planning systems (TOMO TPSs). The user is not allowed to modify the beam profiles/parameters for beam modeling within the TOMO TPSs. The authors report the first feasibility study using t...
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