Gy definition
Examples of Gy in a sentence
Recall that an algorithm is said to be a Decisional Diffie–▇▇▇▇▇▇▇ Oracle (DDHO) if on input G, X = Gx, Y = Gy, and Z ∈R G, it outputs 1 if and only if Z = Gxy.
Pathological examination was performed according to the protocol of Quirke23 with special attention for circumferential margin involvement, and the carcinomas were classified according to the TNM system.20 Patients randomised for preoperative radiotherapy received 5x5 Gy. In patients having TME alone, postoperative irradiation of 50-60 Gy was mandatory in case of tumour spill during surgery or tumour infiltration within 1 mm from the circumferential resection margin.
In this protocol, the EBRT dose is 45 Gy. If the residual tumor is <5 mm, then intracavitary HDR brachytherapy is recommended using 7 Gy × 3 fractions prescribed to 5 mm.
This includes programmes in Paediatrics, Gy- naecology, Cardiology, Urology and the Digestive System, in accordance with generally accepted recommendations, as per ▇▇▇▇▇ ▇▇▇ to these Gen- eral Terms and Conditions.
Similar complication rates were reported in a prospective comparison of conventional and TME surgery.35 The mortality rate in the Stockholm I trial with 5x5 Gy was 2% in the RT- group vs.
Patients with an indication for radiotherapy received a dose between 50 and 60 Gy in fractions of 1.8-2.0 Gy, five fractions per week, depending on the institute.
In the TME-trial, half of the patients received 5x5 Gy irradiation before the operation.
Randomisation is done for preoperative radiotherapy of 5x5 Gy and selective postoperative radiotherapy of 25x1.8 Gy; if randomised for this arm patients with involved circumferential margins receive chemoradiotherapy.
Common fractionation regimens from RTOG trials are 6 Gy × 3 fractions prescribed to the surface after 45 Gy EBRT or 6 Gy × 2 fractions prescribed to the surface after 50.4 Gy EBRT [46,47].
In these trials, the treatment was given by two opposed fields, which increases the volume treated with 25 Gy considerably.