Sökning: "stereotactic"

Visar resultat 1 - 5 av 45 avhandlingar innehållade ordet stereotactic.

1. 1. Contouring & planning variability in stereotactic radiosurgery : How to assess and address the weakest link in stereotactic radiosurgery?

   Författare :Helena Sandström; Iuliana Toma-Dasu; David Schlesinger; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; stereotactic radiosurgery; contouring variability; robust treatment planning; Medical Radiation Physics; medicinsk strålningsfysik;

   Sammanfattning : The use of stereotactic radiosurgery (SRS) employing one or a few fractions of high doses of radiation has continuously increased due to the technical development in dose delivery and morphological and functional imaging. As the target volume in SRS is usually defined without margins, the treatment success critically depends on accurate definition and contouring of the target volume and organs at risk (OARs) which are commonly situated in the proximity of the target making their precise delineation particularly important in order to limit possible normal tissue complications. LÄS MER

3. 2. Improving the therapeutic ratio of stereotactic radiosurgery and radiotherapy

   Författare :Bahram Andisheh; Bengt Lind; John Hopewell; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; optimization; stereotactic radiosurgery; stereotactic radiotherapy; radiobiology; modeling; Medical Radiation Physics; medicinsk strålningsfysik;

   Sammanfattning : New methods of high dose delivery, such as intensity modulated radiation therapy (IMRT), stereotactic radiation therapy (SRT) or stereotactic radiosurgery (SRS), hadron therapy, tomotherapy, etc., all make use of a few large fractions. LÄS MER

4. 3. Treatment selection in metastatic renal cell carcinoma : Towards an individualised approach

   Författare :Maria Stenman; Magnus Lindskog; Ulrika Harmenberg; Tim Eisen; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; rcc; renal cell carcinoma; kidney cancer; stereotactic radiotherapy; srt; stereotactic body radiotherapy; sbrt; gamma knife radiosurgery; gkrs; stereotactic radiosurgery; srs; radiotherapy; overall survival; prognostic factor; papillary; Oncology; Onkologi;

   Sammanfattning : Renal cell carcinoma (RCC), a common malignancy worldwide, affects 1200 new patients yearly in Sweden. Metastatic RCC (mRCC) develops in one in three and is commonly incurable. Clear cell histology dominates followed by papillary histology. LÄS MER

5. 4. Stereotactic imaging in functional neurosurgery

   Författare :Hidehiro Hirabayashi; Patric Blomstedt; Takaomi Taira; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Deep brain stimulation; pallidotomy; thalamotomy; Parkinson s disease; essential tremor; CT; MRI; neurokirurgi; Neurosurgery;

   Sammanfattning : Background: The birth of stereotactic functional neurosurgery in 1947 was to a great extent dependent on the development of ventriculography. The last decades have witnessed a renaissance of functional stereotactic neurosurgery in the treatment of patients with movement disorders. LÄS MER

7. 5. Hypofractionated conformal stereotactic radiotherapy in the treatment of AVMs and cerebral metastases

   Författare :Peter Lindvall; Hans Bolander; Umeå universitet; []
   Nyckelord :arteriovenous malformations; brain metastases; hypofractionation; stereotactic radiotherapy; LINAC; embolisation; Clinical Neurophysiology; klinisk neurofysiologi;

   Sammanfattning : Hypofractionated conformal stereotactic radiotherapy (HCSRT) has been used for the treatment of AVMs at the Umeå University Hospital since 1986. From this year and onwards an increasing number of patients with single or oligo brain metastases have also been treated using this technique. LÄS MER