REGRESSION OF CANCER AFTER INTENSIVE MEDITATION FOLLOWED BY DEATH
REGRESSION OF CANCER AFTER INTENSIVE MEDITATION FOLLOWED BY DEATH
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密集冥想后癌症消退,随后死亡
DOI:
10.5694/j.1326-5377.1977.tb117716.x
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发表时间:
1977
影响因子:
11.4
通讯作者:
A. Meares
中科院分区:
文献类型:
--
作者:
A. Meares
SIR: Radiation units are to become SI (lIy) by January I, 1978. The units with which societies measure quantities that are of importance to their members, be they quantities of land, money, length, time, or radiation, are a reflection of cultural values. Measurements and units are part of a way of life, and to change them without adequate reason is to invite reaction. From the day appointed by the Metrication Board: one curie (Ci) is equal to 3·7x 10'0 bequerels (Bq) or one giga bequerel (GBq), one radiation absorbed dose (rad) is equal to 0·01 grays (Gy), one roentgen (R) is equal to 2·58 x 10-' coulomb/kg. One has to agree that to divide by 100 or multiply by 3·7 is no great intellectual feat. However, the disadvantage to Australian hospital nuclear medicine practice is considerable. I. International companies, including the Australian Atomic Energy Commission, will keep the curie as a unit, in order to market products internationally. The United Kingdom and Australia are among the few countries to adopt the SI system for radiation units. If this is so, a dual system of units will, of necessity, come into operation, no doubt contrary to the expectations of the Metrication Board. 2. Measuring devices are calibrated in the old units, leaving the way open to transcription errors in prescribing patient doses. It is unlikely that Japanese, or American, manufacturers will change their designs for the amusement of the Metrication Board, so the risk of serious errors from this cause will be possible for several years. 3. Presumably the electron volt is to be retained. Why in the name of consistency is this not to be changed? I can only assume it is too difficult to find a convenient alternative. 4. What of the special unit of radiation dose equivalent man (rem), and even more so, what of the medical internal radiation dose (MIRD) tables? Will the Metrication Board kindly translate for the convenience of the users, the following into SI units: equilibrium dose constant, that is, gram radiation absorbed dose microcurie hour (g. rad/llCi h); cumulated activity microcurie hour (llCi/h); radiation absorbed dose (m.radj/rnicrocurie (llCi). The MIRD Committee, one imagines, is not going SI. If the Board cannot provide formal equivalents, then is there not a considerable possibility of individuals arbitrarily choosing their own equivalents? 5. It can be pointed out that the word "kilorkillajbec" has aggressive connotations of a dangerous dose, compared to the diminutive microcuries, and this may well alarm patients unnecessarily. The arithmetical procedures may be of interest to a few medical specialists, but the consequences of these manipulations affect the welfare and safety of patients, and the costs of medical treatment. Thus, inevitably, the consequences of this conversion are, and should be, the legitimate concern of the profession as a whole. Perhaps, like the members of other conservative professions, such as sailors, who will retain the knot, we could continue with the curie, rad, or roentgen. Royal Perth Hospital, IVOR SURVEYOR. Box X 2213 G.P.O., Perth, W.A. 6001.