British Journal of Radiology (BRIT J RADIOL )

Publisher: British Institute of Radiology

Description

The British Journal of Radiology is the official peer reviewed journal of the British Institute of Radiology covering all clinical and technical aspects of diagnostic imaging, radiotherapy and radiobiology.

  • Impact factor
    1.22
    Show impact factor history
     
    Impact factor
  • 5-year impact
    1.94
  • Cited half-life
    0.00
  • Immediacy index
    0.26
  • Eigenfactor
    0.01
  • Article influence
    0.61
  • Website
    British Journal of Radiology website
  • Other titles
    British journal of radiology, BJR
  • ISSN
    0007-1285
  • OCLC
    1537310
  • Material type
    Periodical
  • Document type
    Journal / Magazine / Newspaper

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Objectives: Through prior monoenergetic modeling, we have identified silver as a potential alternative to iodine in dual-energy (DE) x-ray breast imaging. The purpose of this study is to compare the performance of silver and iodine contrast agents in a commercially-available DE imaging system through a quantitative analysis of signal difference-to-noise ratio (SDNR). Methods: A polyenergetic simulation algorithm was developed to model the signal intensity and noise. The model identified the influence of various technique parameters on SDNR. The model was also used to identify the optimal imaging techniques for silver and iodine, so that the two contrast materials could be objectively compared. Results: The major influences on the SDNR were the low-energy dose fraction and breast thickness. An increase in the value of either of these parameters resulted in a decrease in SDNR. The SDNR for silver was, on average 43% higher than iodine when imaged at their respective optimal conditions, and 40% higher when both were imaged at the optimal conditions for iodine. Conclusions: A silver contrast agent should provide benefit over iodine, even when translated to the clinic without modification of imaging system or protocol. If the system were slightly modified to reflect the lower k-edge of silver, the difference in SDNR between the two materials would be increased. Advances in knowledge: These data are the first to demonstrate the suitability of silver as a contrast material in a clinical CEDE image acquisition system.
    British Journal of Radiology 07/2014;
  • [Show abstract] [Hide abstract]
    ABSTRACT: Objectives: The aim of this study was to compare patient-specific radiobiological parameters to population averages in predicting clinical outcome after radiotherapy using a tumor control probability (TCP) model based on BED. Methods: A previously published material of forty-six head and neck carcinomas with individually identified radiobiological parameters; SF2 and Tpot, and known tumor size was investigated. These patients had all been treated with external beam radiotherapy and the majority had also received brachytherapy. TCP for each individual based on BED using patient-specific radiobiological parameters was compared to TCP based on BED using average radiobiological parameters (α = 0.3 Gy-1 and Tpot = 3 days). Results: Forty-three patients remained in the final analysis. There was only a weak trend for increasing local tumor control with increasing BED in both groups. However, when TCP was calculated the use of patient-specific parameters was better to identify local control correctly. Sensitivity and specificity for tumor-specific parameters were 63% and 80%, respectively. The corresponding values for population-based averages were 0% and 91%, respectively. Positive predictive value was 92% when tumor-specific parameters were used compared to 0 % for population-based. A receiver operating characteristic (ROC) curve confirmed the superiority of patient-specific parameters over population averages in predicting local control. Conclusions: Individual radiobiological parameters are better than population derived averages when used in a mathematical model to predict tumor control probability after curative radiotherapy in head and neck carcinomas. Advances in knowledge: TCP based on individual radiobiological parameters are better than TCP based on population based averages.
    British Journal of Radiology 03/2013; 86(1025):20130015.
  • British Journal of Radiology 02/2013;
  • British Journal of Radiology 01/2013;
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    ABSTRACT: We report an unusual case of intracranial extracerebral neuroglial heterotopia (IENH) presenting with parapharyngeal extension. Neuroglial heterotopias are rarely reported pre-natally and, to our knowledge, there are no reported cases presenting pre-natal imaging findings of IENH with parapharyngeal extension. Because pre- and post-natal imaging studies are essential to diagnose IENH and plan surgical treatment, radiologists should be familiar with this rare condition.
    British Journal of Radiology 01/2012; 85(1010):e41-e45.
  • British Journal of Radiology 01/2009; 82(978):114-116.
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    ABSTRACT: Penile lymphoma is extremely rare and secondary involvement of the penis by lymphoma may be due to retrograde spread or to direct extension from neighbouring organ. The appearance of penile lymphoma varies and can be mistaken for other soft tissue tumours. We report on a case with malignant lymphoma of the penis. MRI findings revealed soft-tissue mass of homogeneous isointensity around the middle to distal part of penis on T(1) weighted imaging and T(2) weighted imaging. It was well encapsulated, minimally enhanced and distinct from corpus cavernosum and corpus spongiosum.
    British Journal of Radiology 07/2006; 79(942):526-8.
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    ABSTRACT: Human hepatoma and normal liver cells were irradiated with (12)C(6+) ion beams (linear energy transfer (LET) = 96 keV microm(-1)) and gamma-rays at the Heavy Ion Research Facility in Lanzhou (HIRFL). The numbers and types of chromatid breaks were detected using the premature chromosome condensation technique. Irradiation with (12)C(6+) ions produced a majority of isochromatid break types, while chromatid breaks were dominant for irradiation with gamma-rays. Experimental results showed that the initial level of chromatid breaks is clearly related to the absorbed dose from (12)C(6+) ions and gamma-rays. The (12)C(6+) ions are relatively more effective at inducing initial chromatid breaks when compared with the gamma-rays. A relative biological effectiveness (RBE) of about 2.5 resulted for the induction of initial chromatid breaks by (12)C(6+) ions relative to gamma-rays in both cell lines.
    British Journal of Radiology 07/2006; 79(942):518-21.
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    ABSTRACT: The aim of this study is to evaluate the radiation dose to the interventional radiologist in transjugular intrahepatic portosystemic shunt (TIPS) concerning the risk of cancer and deterministic radiation effects and the relation to recommended dose limits. In 18 TIPS interventions radiation doses were measured with thermoluminescence dosemeters (TLD) fixed at the eyebrow, thyroid and hand of the radiologist without special lead shielding of these body parts and at the chest, abdomen and testes under the lead apron. The doses of the eye lens, thyroid gland and hand were assumed to be equal to the corresponding surface doses. The dose at the abdomen under the lead apron was used as an estimation of the ovarian dose. Effective dose equivalent was estimated by Webster's method. The estimated effective dose equivalent was 0.087 mSv and the effective dose 0.110 mSv. The risk of fatal cancer was of 10(-6) and the risk of severe genetic defect of 10(-7) for one single intervention. The maximum permissible number of TIPS interventions was 181, otherwise the dose limit for effective dose would be exceeded. When the radiologist performed more than 372 TIPS procedures per year for many years, the dose to the lens of the eye could exceed the threshold for cataract. If the interventionist performs a large number of TIPS procedures in a year, the risk of fatal cancer and developing cataracts becomes relatively high.
    British Journal of Radiology 07/2006; 79(942):483-6.
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    ABSTRACT: Endobronchial brachytherapy was developed as effective treatment of endobronchial cancer and fractionated schedule is applied to decrease late toxicity. However, repeated bronchofiberscopy is onerous to the patient and restricts the treatment schedule itself. We applied mini-tracheostomy for a ready access route, and a torque controlled technique for easy insertion of the endobronchial applicator. Eight patients with tracheobronchial cancer invasion were treated with endobronchial brachytherapy of 18-30 Gy/3-5 fractions/1.5-2.5 weeks (median 24 Gy/4 fractions/2 weeks) at reference points of 5 mm from the bronchial surface. The averaged individual irradiation and single session times were 4 min and 24 min, respectively. There were no procedure-related complications. These technical improvements may facilitate flexible fractionated dose prescriptions.
    British Journal of Radiology 07/2006; 79(942):522-5.
  • British Journal of Radiology 07/2006; 79(942):536; author reply 536.