Clayton travelled extensively fulfilling the desires to see Canada, Holland, Republic of Ireland and Great Britain. He fulfilled two ambitions to teach and to nurse, having worked in both professions. Having been an infant, when part of these experiments, Clayton, probably, was the longest - surviving client of these “Radium implant experiences”, in the world. Clayton, was known to be the only survivor of these experiments, and they were discontinued. Several radioactive implants were injected into the growth. At a nearby building, the Dunlop building, experiments with Radium were in progress. At 6 months old, he was taken to Toronto General. He was not expected to survive, having been born with a growth on his left cheek. Clayton was born Augin Rutherglen, Ontario. He is survived by very good friends Rick Gascon and Mary Davis, who have meant a lot to him for many years. Clayton was particularly close to his nieces Brenda Caverly and Tammy Nowell. He is survived by siblings Marion Smith (Roy), Glen (Wilda), Murray (Janie), Harvey (Noreen), Sandra Smith (Peter) as well as numerous nieces and nephews. Clayton was predeceased by his parents, Thomas Rose and Blanche (nee Sullivan), sisters Gwen Robillard (John), Doreen McClure (David), Jean Schellekens (Frank) and Beth James (Arnold). All values represent doses relative to 100 rads midway between any two of the needles.The Family announces that Clayton Allan Rose went to his eternal rest on Thursday, March 18 th, 2021 at the North Bay Regional Health Centre. The relative hot spots close to the middle of the radium needles are somewhat reduced.įigure 3C illustrates the isodose lines for a radium implant composed of three dumbbell needles, 3.2 cm. By crossing the needles at the inactive ends, the area of the homogeneous dose is extended to the inactive ends of the needles, a marked improvement. The values represent doses relative to 100 rads as in Figure 3A. In order to compensate for the underdosed region, the implant is crossed at the inactive end of the needles.įigure 3B illustrates the isodose lines for a standard radium needle implant crossed at the inactive end by a 1.5 cm. from the midpoint toward either end of the implant, and 0.7 cm. The relative dose in the area bounded by the radium sources ranges from less than 80 to 150 rads, The 100-rad isodose area is very small, extending only 0.3 cm. All values represent doses measured in a tissue-equivalent medium, relative to 100 rads at a point midway between two needles. Each needle is homogeneously loaded with an equal quantity of radium. This is the plane of interest for the stated tumor dose of a planar implant.Comparison of standard radium needles with eccentrically overloaded needles in a single-plane implant.Ĭomparison of Standard Radium Needles with Eccentrically Overloaded Needles in a Single-Plane Implantįigure 3 is a study of the dose distribution in the plane of two radium implants with standard radium needles, and one implant with dumbbell needles.įigure 3A shows the isodose lines at one end of a plane of an implant containing three standard radium needles, 2 cm. from the axis of the needle, which is the region of interest to the radiotherapist.įigure 2 shows isodose curves in a plane 0.5 cm.
The isodose curves are flattened along the entire active length of the dumbell needle as contrasted with the rounded curves of the standard needle particularly along the line 0.5 cm. Measurements were made along parallel lines at graded distances ranging from 0.2 to 2.0 cm. The radiation distribution around each needle was measured with fluorods, in accordance with the method described previously (4–6).įigure 1 illustrates isodose curves around each of the three types of needle. In this experiment, two types of commercially available dumbbell needles and one type of Indian club needle were studied (see Table I and Fig.
Isodose distributions around these eccentrically loaded needles have been constructed by calculation (1–3). The two types of linear radium sources are useful in radium implants where crossing the ends of the needles is difficult. Indian club radium needles are overloaded only at the point end. Dumbbell radium needles in contrast with standard radium needles are overloaded at both active ends.
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