摘要:

The 111th meeting of the North of England Branch of the BIR was held at the Bolton Medical Institute, on Saturday, October 18, 1986. The following papers were presented at the meeting.The President of the Institute, Professor R. J. Berry, attended the meeting and encouraged closer links between the Branch and the Institute headquarters. In the course of the day he had occasion to admire the badge of office of the Chairman, which was given to the Branch in 1982 by the then chairman, Dr F. B. Wright.

DOI:10.1259/0007-1285-60-711-B13

出版商:The British Institute of Radiology    

年代:1987

数据来源: WILEY

摘要:

AbstractPolytomography permits clear visualisation of the internal auditory meatus (IAM), the normal range of measurements of which is important for radiograph interpretation. Previous reports indicate wide variation in vertical diameter and in the length of the posterior canal wall although in any one individual there is usually little variation between the two sides. We studied the relationship of both the vertical diameter and the length of the posterior walls of the IAM to the growth of the skull and pneumatisation of the temporal bone in 300 patients with no evidence of a lesion of the VIII nerve. No statistically significant correlation was observed between these factors.

DOI:10.1259/0007-1285-60-711-209

出版商:The British Institute of Radiology    

年代:1987

数据来源: WILEY

摘要:

AbstractForty-five patients who had undergone previous lumbar spine surgery with symptoms and signs warranting further investigation were examined by computed tomography (CT). The findings in three separate subgroups of 15 patients were compared. The first randomly selected group underwent CT without the use of intravenous contrast medium; the second and third groups were examined both before and after the administration of contrast medium, using 16.25 g and 32.5 g iodine, respectively. In the latter two groups the CT studies were reported both before and after enhancement. In the 15 patients in the first group (no contrast medium), uncertainty as to whether disc material or fibrosis was responsible for the radiological abnormalities was expressed in the final report at six of the 20 post-surgical sites. Among the 30 patients who received contrast medium, 40 post-surgical sites were examined; at six of these sites there was no radiological cause for concern; at 16 sites there were unequivocal radiological appearances of either disc material or fibrosis. Enhancement resolved the radiological uncertainty at 13 of the remaining 18 sites, almost always by reinforcing the initial radiological opinion; this left five sites where uncertainty persisted in the final report. The larger dose of contrast medium caused the more marked enhancement of those abnormalities considered to be due to fibrosis, although enhancement was readily recognised using the lower dose. While intravenous enhancement assists radiological interpretation at those sites where diagnostic uncertainty persists after routine CT, it would seem that it is not essential in patients in whom routine CT studies show no serious abnormality or the characteristic appearances of disc material or fibrosis.

DOI:10.1259/0007-1285-60-711-215

出版商:The British Institute of Radiology    

年代:1987

数据来源: WILEY

摘要:

Hayward, S. J., McIvor, J., Burdge, A. H., Jewkes, R. F.&Williams, G., 1987. Staging of prostatic carcinoma with radionuclide bone scintigraphy and lymphography.British Journal of Radiology, 60, 79–81.In the Results to this paper, on page 80, the opening sentence of the second paragraph should read “The incidence of metastases in patients staged clinically as T3and T4was significantly higher than in those staged as T0, T1and T2(p=<0.0005, χ2with Yates' correction) (Table II).” The two percentages actually printed in the passage should have been deleted. We apologise for this error—would readers please correct their copies.

DOI:10.1259/0007-1285-60-711-222

出版商:The British Institute of Radiology    

年代:1987

数据来源: WILEY

摘要:

AbstractThirty-eight patients with a wide variety of different disorders of the lung have been imaged using magnetic resonance. The disorders studied include congenital abnormalities, acute and chronic inflammation, vascular disorders, primary and secondary tumours of the lung, haematomas and infarcts. Magnetic resonance imaging identified all lesions seen on chest radiographs, but it is not quite as sensitive as computed tomography is for detection of very small abnormalities. Magnetic resonance may provide information to aid in differentiation of a wide variety of disorders causing diffuse pulmonary abnormality and might also prove helpful in differentiating acute inflammation from pulmonary collapse or fibrosis. In some disorders, such as lobar emphysema, cystic adenomatoid malformation and sequestration, the findings on the magnetic resonance scan alone will permit a correct diagnosis to be made in many cases. It is believed that magnetic resonance imaging has more potential for pulmonary imaging than has previously been recognised.

DOI:10.1259/0007-1285-60-711-223

出版商:The British Institute of Radiology    

年代:1987

数据来源: WILEY

摘要:

AbstractThe numbers of cancers which might be induced in a breast screening programme are compared with the numbers detected. The induction rate is estimated from reports of breast cancer in various groups exposed to high radiation doses, and also from International Commission on Radiological Protection risk estimates. An apparent discrepancy between these two approaches is discussed and removed. Detection rates are based on preliminary results in Edinburgh, and greatly exceed the induction rate. Whether such an excess is maintained if an X-ray grid requiring a higher dose is used on younger age groups is discussed.

DOI:10.1259/0007-1285-60-711-231

出版商:The British Institute of Radiology    

年代:1987

数据来源: WILEY

摘要:

AbstractForty-nine legs in 41 patients with primary varicose veins were investigated by varicography, (direct injection of varicose veins with contrast medium). Additional features not found at clinical examination, such as reduplication of the long saphenous vein, unusual terminations of the short saphenous vein and incompetent perforating veins, were found in over 50% of the legs examined. It is suggested that varicography should be carried out in patients with primary varicose veins in whom the clinical assessment is not conclusive.

DOI:10.1259/0007-1285-60-711-235

出版商:The British Institute of Radiology    

年代:1987

数据来源: WILEY

摘要:

AbstractThe reproducibility ofT1measurements using an MD 800 magnetic resonance imager operating at 0.08 T (3.4 MHz) has been assessed by repeated imaging over a 15-week period of a phantom containing six copper-sulphate solutions of different dilutions. The standard pulse sequence for this scanner with an inversion time of 200 ms and a repetition time of 1 s was used. Reproducibility was excellent for the lowerT1range (490 ms). A linear relationship betweenT1and temperature has been demonstrated and a method for standardisingT1values obtained at different temperatures is described.

DOI:10.1259/0007-1285-60-711-241

出版商:The British Institute of Radiology    

年代:1987

数据来源: WILEY

摘要:

AbstractMeasurements of the functioning volume of thyroid tissue have been made in 22 patients undergoing radioiodine therapy for thyrotoxicosis, using a prototype multiwire proportional counter positron camera. Tomographic images were produced of the distribution of124I in the thyroid. Functioning volumes were found to be in the range 21–79 cm3with volume errors of the order of ±4% to ±14%. Radioiodine uptake varied from 28% to 98%. Using a value of 6 days for the effective half-life of radioiodine in hyperactive thyroids, radiation doses from a standard therapy administration of 75 MBq of131I varied from 11 to 48 Gy (compared with a recommended 50–70 Gy). In five cases PET imaging showed a non-uniform distribution of radioiodine in thyroids thought to have uniform uptake from conventional pinhole scintigraphy.

DOI:10.1259/0007-1285-60-711-245

出版商:The British Institute of Radiology    

年代:1987

数据来源: WILEY

摘要:

This is the second of three volumes of the revised versions of Meschan'sAnalysis of Roentgen Signs in General Radiologywhich was published originally in 1973. The first volume of the set covered the abdomen and has been reviewed previously.*There are to be four volumes in all, one on the skull and spine, the other on the chest.This volume covers the appendicular skeleton. The introductory chapter includes definitions of the descriptive terms used in bone radiology, an outline of radiographic projections used, and a simple resumé of the physical principles of computed tomography (CT).

DOI:10.1259/0007-1285-60-711-252-a

出版商:The British Institute of Radiology    

年代:1987

数据来源: WILEY