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A Non-Invasive, Relocatable Stereotactic Frame for Fractionated Radiotherapy and Multiple Imaging
0739-071 l/92 $500 +.OO
Mrdrcal Dovrmrlr~‘.kol. Il. PP. 169-l 70 Printed in thr L1.S.A. Ail rights reserved
?? Literature Reviews 279 implant patients were analyzed and results showed
LOUISE A. FARRADAY
that:
A NON-INVASIVE,RELOCATABLESTEREOTACTICFRAME
1. Local control is significantly related to dose independently of dose rate. 2. Necrosis is significantly related to dose when the dose rate is less than 0.5 Gy/hr. 3. Local control is dose rate dependent only below 62.5
FORFRACTIONATEDRADIOTHERAPY AND MULTIPLE IMAGING
John D. Graham,’ Alan P. Warrington,* and Michael Brada’
Stephen S. Gi11,3
GY. 4. Necrosis is related to dose rate independent of dose. 5. Dose correction may lead to an increase of local failure rate without reduction of necrosis. 6. Dose rate correction may reduce necrosis rate without reducing local control.
‘Academic Unit of Radiotherapy & Oncology, Institute of Cancer Research and Royal Marsden Hospital. Sutton, Surrey. U.K., ‘Department of Physics, Royal Marsden Hospital, Fulham Rd., London, SW3 655, U.K.. and 3Department of Neurosurgery. Southampton General Hospital. Southampton, Hampshire, U.K.
PAM NAPLACHOWSKI
Radiotherapy and Oncolog?: Journal for the European Society for Therapeutic Radiology and Oncology. Volume 2 1, May 199 1, Number 1, pp. 60-62.
DECREASING GASTROINTESTINAL MORBIDITYWITHTHE USE OF SMALL BOWELCONTRASTDURING TREATMENT PLANNING FORPELVICIRRADIATION
With increasing precision ofdelivery of radiotherapy particularly in the treatment of small intracranial lesions, it has become important to improve the accuracy of head fixation. In radiosurgery this has been achieved by the use of an invasive procedure using a head frame and steel pins. This paper describes a fixation device which is noninvasive, well tolerated, and accurately relocatable. Relocation is achieved via an individually moulded impression of the upper dentition. The treatment isocentre is defined in 3-dimensions using a fiducial system that is compatible with CT, MRI, and PET scanners. Angiographic localization is performed with a set of orthogonal AP and lateral plates attached to the frame. This relocatable head frame offers significant labour and cost saving and has proved to be a highly reproducible method of head fixation for stereotactic radiotherapy.
Scott H. Herbert, M.D., Walter J. Curran Jr.. M.D., Lawrence J. Solin. M.D., Patrick M. Stafford, Ph.D., Rachelle M. Lanciano. M.D., and Gerald E. Hanks, M.D.
Department of Radiation Oncology. Fox Chase Cancer Center and the University of Pennsylvania, School of Medicine, Philadelphia, PA. International Journal of Radiation Oncologic.Biology. and Physics. Vol. 20, April 1991. pp. 835-842 It is well known there is a direct correlation between the amount small bowel irradiated and the complication rate in treating carcinomas of the pelvis. Many techniques have been used to decrease this volume of small bowel in the treatment portals. Treatment position. bladder distension. external compression, focus blocks, surgical procedures are a few. This study demonstrates that the simple use of oral contrast at the time of the simulation procedure significantly decreased the incidence and duration of small bowel injury. There was also a significant difference in the placement of the superior field edge. In patients simulated with contrast, the border tended to be more interiorly placed than those simulated without contrast, thus decreasing the amount of small bowel in the treatment field.
EFFECT OF DOSE RATEON LOCALCONTROLAND COMPLICATIONSIN DERNITIVEIRRADIATIONOF T,_* SQUAMOUSCELL CARCINOMASOF MOBILE TONGUE AND FLIER OF MOUTH WITH INTERSTITIAL IRIDIUM-192 J. J. Mazeron, J. M. Simon, C. Le Ptchoux, J. M. Crook, L. Grimard*, P. Piedbois, J. P. Le Bourgeois and B. Pierquin Departement
de Cancerologie, Hopital Henri Mondor. Creieil, France
Radiotherapy and Oncology. Journal of the European Society for Therapeutic Radiology and Oncology. Volume 2 1, May 199 1, Number 1, pp. 39-47.
ABUTMENTOF HIGHENERGYELECTRON FIELDS William B. Harms, B.S. and James A. Purdy. Ph.D. Mallincrodt Instituteof Radiology, Washington University School of Medicine, St. Louis, MO
This paper discusses the influence of dose rate on local control and necrosis for iridium- 192 brachytherapy treatments for T, and Tz squamous cell carcinomas of the tongue and floor of the mouth.
International Journal of Radiation Oncology, Biology: and Physics, Vol. 20, April 199 1, pp. 853-858 169
Mrdrcal Dovrmrlr~‘.kol. Il. PP. 169-l 70 Printed in thr L1.S.A. Ail rights reserved
?? Literature Reviews 279 implant patients were analyzed and results showed
LOUISE A. FARRADAY
that:
A NON-INVASIVE,RELOCATABLESTEREOTACTICFRAME
1. Local control is significantly related to dose independently of dose rate. 2. Necrosis is significantly related to dose when the dose rate is less than 0.5 Gy/hr. 3. Local control is dose rate dependent only below 62.5
FORFRACTIONATEDRADIOTHERAPY AND MULTIPLE IMAGING
John D. Graham,’ Alan P. Warrington,* and Michael Brada’
Stephen S. Gi11,3
GY. 4. Necrosis is related to dose rate independent of dose. 5. Dose correction may lead to an increase of local failure rate without reduction of necrosis. 6. Dose rate correction may reduce necrosis rate without reducing local control.
‘Academic Unit of Radiotherapy & Oncology, Institute of Cancer Research and Royal Marsden Hospital. Sutton, Surrey. U.K., ‘Department of Physics, Royal Marsden Hospital, Fulham Rd., London, SW3 655, U.K.. and 3Department of Neurosurgery. Southampton General Hospital. Southampton, Hampshire, U.K.
PAM NAPLACHOWSKI
Radiotherapy and Oncolog?: Journal for the European Society for Therapeutic Radiology and Oncology. Volume 2 1, May 199 1, Number 1, pp. 60-62.
DECREASING GASTROINTESTINAL MORBIDITYWITHTHE USE OF SMALL BOWELCONTRASTDURING TREATMENT PLANNING FORPELVICIRRADIATION
With increasing precision ofdelivery of radiotherapy particularly in the treatment of small intracranial lesions, it has become important to improve the accuracy of head fixation. In radiosurgery this has been achieved by the use of an invasive procedure using a head frame and steel pins. This paper describes a fixation device which is noninvasive, well tolerated, and accurately relocatable. Relocation is achieved via an individually moulded impression of the upper dentition. The treatment isocentre is defined in 3-dimensions using a fiducial system that is compatible with CT, MRI, and PET scanners. Angiographic localization is performed with a set of orthogonal AP and lateral plates attached to the frame. This relocatable head frame offers significant labour and cost saving and has proved to be a highly reproducible method of head fixation for stereotactic radiotherapy.
Scott H. Herbert, M.D., Walter J. Curran Jr.. M.D., Lawrence J. Solin. M.D., Patrick M. Stafford, Ph.D., Rachelle M. Lanciano. M.D., and Gerald E. Hanks, M.D.
Department of Radiation Oncology. Fox Chase Cancer Center and the University of Pennsylvania, School of Medicine, Philadelphia, PA. International Journal of Radiation Oncologic.Biology. and Physics. Vol. 20, April 1991. pp. 835-842 It is well known there is a direct correlation between the amount small bowel irradiated and the complication rate in treating carcinomas of the pelvis. Many techniques have been used to decrease this volume of small bowel in the treatment portals. Treatment position. bladder distension. external compression, focus blocks, surgical procedures are a few. This study demonstrates that the simple use of oral contrast at the time of the simulation procedure significantly decreased the incidence and duration of small bowel injury. There was also a significant difference in the placement of the superior field edge. In patients simulated with contrast, the border tended to be more interiorly placed than those simulated without contrast, thus decreasing the amount of small bowel in the treatment field.
EFFECT OF DOSE RATEON LOCALCONTROLAND COMPLICATIONSIN DERNITIVEIRRADIATIONOF T,_* SQUAMOUSCELL CARCINOMASOF MOBILE TONGUE AND FLIER OF MOUTH WITH INTERSTITIAL IRIDIUM-192 J. J. Mazeron, J. M. Simon, C. Le Ptchoux, J. M. Crook, L. Grimard*, P. Piedbois, J. P. Le Bourgeois and B. Pierquin Departement
de Cancerologie, Hopital Henri Mondor. Creieil, France
Radiotherapy and Oncology. Journal of the European Society for Therapeutic Radiology and Oncology. Volume 2 1, May 199 1, Number 1, pp. 39-47.
ABUTMENTOF HIGHENERGYELECTRON FIELDS William B. Harms, B.S. and James A. Purdy. Ph.D. Mallincrodt Instituteof Radiology, Washington University School of Medicine, St. Louis, MO
This paper discusses the influence of dose rate on local control and necrosis for iridium- 192 brachytherapy treatments for T, and Tz squamous cell carcinomas of the tongue and floor of the mouth.
International Journal of Radiation Oncology, Biology: and Physics, Vol. 20, April 199 1, pp. 853-858 169