摘要:

The presence, in a biopsy from cancer of the cervix, of tumour emboli in the venules may give useful information regarding prognosis irrespective of the radiosensitivity of the tumour. A group of cases surviving five years, and a similar number treated more recently, have been investigated and the above observations confirmed in a large percentage of the cases.It is suggested that the presence or absence of tumour emboli might serve as a guide to the treatment of choice in the particular case, whether by surgery or by radiotherapy.

DOI:10.1259/0007-1285-28-335-623

出版商:The British Institute of Radiology    

年代:1955

数据来源: WILEY

摘要:

“A Loading Device for Radon Seed Elastoplast Moulds” by W. Dik. September 1955 issue, p. 515.It has been called to our notice by Messrs. Edward Taylor Ltd., that the material used in the construction of this device was “Flexoplast” and not “Elastoplast”.Authors are again reminded that when trade names are quoted special care should be taken to ensure that they are quoted correctly.

DOI:10.1259/0007-1285-28-335-625

出版商:The British Institute of Radiology    

年代:1955

数据来源: WILEY

摘要:

It was perhaps in the field of radiotherapy that radiology owed its greatest debt to Lord Horder. In the early days of radiotherapy Horder was sufficiently far-sighted to discern its possibilities and he lent his whole-hearted encouragement and support to a line of radiotherapists, Robert Knox, Finzi, and the present writer.

DOI:10.1259/0007-1285-28-335-626-b

出版商:The British Institute of Radiology    

年代:1955

数据来源: WILEY

摘要:

A case of an incomplete triple ureter on the left side is described.

DOI:10.1259/0007-1285-28-335-627

出版商:The British Institute of Radiology    

年代:1955

数据来源: WILEY

摘要:

A case of post-cricoid carcinoma is reported in which the oesophagus alternately showed tertiary contractions and cardiospasm after the act of swallowing.

DOI:10.1259/0007-1285-28-335-629

出版商:The British Institute of Radiology    

年代:1955

数据来源: WILEY

摘要:

Books received are acknowledged under this heading and such notice may be regarded as an acknowledgment of the courtesy of the sender.Reviews will be published in the interest of our readers and as space permits.Fundamentals of Radiobiology. By Z. M. Bacq and Peter Alexander (Butterworth Scientific Publications, London; Academic Press Inc., New York.Principes de Radiobiologie, in French (Masson et Cie, Paris).

DOI:10.1259/0007-1285-28-335-630

出版商:The British Institute of Radiology    

年代:1955

数据来源: WILEY

摘要:

In the use of beam units which incorporate pneumatic transfer of the source between storage safe and treatment head (Grimmett, 1937; Wilson, 1945; Spiers, 1952) the possibility of the source failing to transfer normally is a source of danger. Such failure may only be apparent and not real if the cause is a defect of the relay circuitry associated with the warning light system. If real, it might be due to lodgement of the source in either the safe or the head, or in the unscreened pipe which conveys the source between the two. From the viewpoint of protection when dealing with such an emergency, the action taken depends upon the position of the source; but without some method of indicating this position, it is not possible immediately to be aware of the exact circumstances.It is our experience that this kind of emergency occurs only very infrequently (twice in five years), but discussion with others using similar apparatus leads us to think that we may have been fortunate. The chief information that is required as quickly as possible is whether the source is located in the unscreened connecting pipe. Using an ionization chamber detector it proved easy to improvise a method of supplying this information which was considered adequate for sources up to 10 g of radium. Use of considerably more active60Co sources makes more permanent methods and apparatus desirable in order that incidental exposure of personnel may be minimal.

DOI:10.1259/0007-1285-28-335-631

出版商:The British Institute of Radiology    

年代:1955

数据来源: WILEY

摘要:

In a report which predicted the availability of fission product132Te (Winsche, Stang and Tucker, 1951) it was suggested that its daughter product,132I, might be of value in the diagnosis and treatment of thyroid disorders. It soon became apparent that132I would be valuable for many other clinical applications, such as haemodynamic studies and plasma volume measurements, since the short half-life of 2·26 hours (Emery and Veall, 1954) would permit the administration of comparatively large tracer doses without appreciable radiation hazards to the patient (see note A below); and measurements could be repeated at frequent intervals without interference from residual activity. For such applications it was first necessary to develop a method whereby the isotope could be prepared in the form of sterile iodinated human serum albumin, and which unlike the procedures currently employed for131I, could be carried out in an hour or less. The following procedure, which was based on that employed by Francis, Mulligan and Wormall (1951), meets these requirements and is of course equally applicable to131I.(All chemicals of analytical reagent grade.)Ammonia solution N (20:1 dilution of 0·88 ammonia solution).Hydrochloric acid N (10:1 dilution of concentrated HC1).N/50 sodium sulphite solution (125:1 dilution of saturated Na2SO3solution, pH7).(The above solutions are freshly prepared using sterile pyrogen free water.)Potassium iodide solution, 2 mg/ml.Potassium iodate solution, 1 mg/ml.Potassium iodide solution 20 per cent w/v approx.Hydroxylamine sulphate N/10.

DOI:10.1259/0007-1285-28-335-633

出版商:The British Institute of Radiology    

年代:1955

数据来源: WILEY

摘要:

One method of measuring γ-ray dose involves the calibration of an “air-wall” cavity ionization chamber against a known mass of radium, using the generally accepted figure for the specific γ-ray output of radium (in 0·5 mm of platinum) of 8·3 or 8·4 r/h at 1 cm per mg. In computing the output of the radium source on this basis, one generally has to correct for the attenuation of the γ radiation in the radium salt itself, and for any difference between the attenuation in the actual capsule wall and that in exactly 0·5 mm of platinum. In connection with the calibration of a number of cavity chambers by this method, the attenuation of the γ rays from radium was measured in cylindrical sleeves of various atomic numbers. The aim was, given a known mass of radium in a capsule of any material and any reasonable size, to be able to calculate the γ-ray output of the source.

DOI:10.1259/0007-1285-28-335-635

出版商:The British Institute of Radiology    

年代:1955

数据来源: WILEY