Total body irradiation with a sweeping 60Cobalt beam

Hussein, Sherali; El‐Khatib, Ellen

doi:10.1016/0360-3016(95)00164-t

Cited by 14 publications

(9 citation statements)

References 11 publications

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“…The direction of the radiation can be vertical or horizontal [2,19]. A conventional radiation unit, modified for total body irradiation is used in most of the radiation centres [2,5,6,9,11,12,14,16,19,[22][23][24][25][27][28][29]. One of the opportunities is that the gantry of the equipment -which can be either a cobalt source or a linac -is rotated to horizontal position so that the treatment couch is on the opposite side of the room.…”

Section: Discussionmentioning

confidence: 99%

“…A couch moving with definite low speed in front of the source or a narrow angled pendulum irradiation can provide solutions, too [14,24].…”

Section: Discussionmentioning

confidence: 99%

“…The target volume of total body irradiation is the whole body, therefore the large field and the homogeneity of dose distribution require special planning, dosimetric and radiation methods [1,5,6,8,9,11,14,18,20,21].…”

mentioning

confidence: 99%

See 2 more Smart Citations

Total Body Irradiation before Bone Marrow Transplantation

Székely¹,

Fábry²,

Forgács³

et al. 1999

Strahlentherapie und Onkologie

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Section: Discussionmentioning

confidence: 99%

“…A couch moving with definite low speed in front of the source or a narrow angled pendulum irradiation can provide solutions, too [14,24].…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Total Body Irradiation before Bone Marrow Transplantation

Székely¹,

Fábry²,

Forgács³

et al. 1999

Strahlentherapie und Onkologie

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“…A few centers have employed a sweeping arc beam with patients lying on the floor under the machine 6, , 7 . However, this technique requires utilization of a sophisticated custom‐made compensator for each patient.…”

Section: Introductionmentioning

confidence: 99%

A translational couch technique for total body irradiation

Sarfaraz

Chen

et al. 2001

J Applied Clin Med Phys

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We have constructed a computer controlled translational couch to administer total body irradiation reproducibly and safely. The system has replaced the previous stationary anterior‐posterior technique in our institution and 30 plus patients have been treated with it so far. In this technique, patients comfortably lie on a couch in supine and prone positions and are transported slowly through a narrow beam with the gantry in an upright position. Dose to the patient is determined by the couch velocity that is calculated based on physical parameters such as patient's dimensions, beam geometry, and machine dose rate. In our design, the couch velocity is continuously updated to compensate for machine dose rate fluctuations. The translational couch technique provides better dose uniformity within the patient compared to fixed beam techniques, and allows a more precise shielding block placement for organs at risk. At the same time, it presents a special challenge for dosimetry calculations. A dosimetry parameter is introduced that converts the moving beam output to the fixed beam output factor. Based on this factor, a simple dosimetry calculation method has been developed that takes advantage of conventional dosimetry parameters, eliminating extensive dosimetry measurements. Multiple point dose measurements within a phantom confirmed the validity of the calculation method.PACS number(s): 87.53.–j, 87.66.–a

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“…6,7 However, this technique requires utilization of a sophisticated custom-made compensator for each patient. In another approach, a translational couch technique is utilized in which patients rest on a couch in supine and prone positions and are transported horizontally through a vertical beam.…”

Section: Introductionmentioning

confidence: 99%

A translational couch technique for total body irradiation

Sarfaraz

Chen

et al.

Proceedings of the 22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society (Cat. No.00CH37

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We have constructed a computer controlled translational couch to administer total body irradiation reproducibly and safely. The system has replaced the previous stationary anterior-posterior technique in our institution and 30 plus patients have been treated with it so far. In this technique, patients comfortably lie on a couch in supine and prone positions and are transported slowly through a narrow beam with the gantry in an upright position. Dose to the patient is determined by the couch velocity that is calculated based on physical parameters such as patient's dimensions, beam geometry, and machine dose rate. In our design, the couch velocity is continuously updated to compensate for machine dose rate fluctuations. The translational couch technique provides better dose uniformity within the patient compared to fixed beam techniques, and allows a more precise shielding block placement for organs at risk. At the same time, it presents a special challenge for dosimetry calculations. A dosimetry parameter is introduced that converts the moving beam output to the fixed beam output factor. Based on this factor, a simple dosimetry calculation method has been developed that takes advantage of conventional dosimetry parameters, eliminating extensive dosimetry measurements. Multiple point dose measurements within a phantom confirmed the validity of the calculation method.

show abstract

Total body irradiation with a sweeping 60Cobalt beam

Cited by 14 publications

References 11 publications

Total Body Irradiation before Bone Marrow Transplantation

Total Body Irradiation before Bone Marrow Transplantation

A translational couch technique for total body irradiation

A translational couch technique for total body irradiation

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