Abstract:
AIM:To prospectively compare helical and traditional sequential acquisition of computed tomography (CT) images of the head with respect to lens dose, thyroid dose, and image quality. MATERIALS AND METHODS:Patients undergoing non-emergency unenhanced CT examinations of the head were prospectively randomized to sequential or helical multidetector CT (MDCT) acquisition. Lens dose and thyroid dose were measured directly using a MOSFET (metal oxide field effect transistor) system. The quality of images at the level of the basal ganglia and the posterior fossa were assessed by two neuroradiologists on a scale of 1 (poor) to 5 (very good), with respect to grey-white matter conspicuity and posterior fossa artefact respectively. RESULTS:The lens dose was significantly higher for the sequential technique than the helical technique (61.5±12.9 mGy versus 43.5±4.3 mGy; p<0.0001). The thyroid dose was not significantly different (1.6±0. 6 mGy versus 2.1±0.6 mGy; p=0.8). The sequential technique was ranked higher than the helical technique with respect to the basal ganglia image for overall quality and grey-white matter conspicuity, but the majority of images in both groups were rated good or excellent. Posterior fossa images showed more artefacts on the sequential images than the helical technique images. Signal-to-noise ratios for grey and white matter were better using the sequential technique. CONCLUSIONS:Helically acquired head CT images using 16 and 64 section MDCT are of comparable quality to sequential acquisition, have reduced posterior fossa artefacts and approximately two-thirds of the lens dose.
journal_name
Clin Radioljournal_title
Clinical radiologyauthors
Abdeen N,Chakraborty S,Nguyen T,dos Santos MP,Donaldson M,Heddon G,Schwarz BAdoi
10.1016/j.crad.2010.02.016subject
Has Abstractpub_date
2010-11-01 00:00:00pages
868-73issue
11eissn
0009-9260issn
1365-229Xpii
S0009-9260(10)00257-6journal_volume
65pub_type
杂志文章,随机对照试验abstract:AIM:This prospective study was performed to establish the correlation between colour Doppler ultrasound (US) observations and venography in detecting catheter-related thrombosis. METHOD:Forty-four patients with subclavian venous catheters were studied. The sensitivity and specificity of colour Doppler US was determine...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(05)83313-6
更新日期:1995-10-01 00:00:00
abstract:AIM:To describe a cerebral computed tomography angiography (CTA) technique using a 320-detector CT machine and a small contrast medium volume (35 ml, 15 ml for test bolus). Also, to compare the quality of these images with that of the images acquired using a larger contrast medium volume (90 or 120 ml) and a fixed time...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2013.10.021
更新日期:2014-03-01 00:00:00
abstract::Osteonecrosis or aseptic necrosis is well-recognised in certain sites. We report two patients, both with predisposing factors, who developed avascular necrosis of the hemipelvis which was bilateral in one case. In each patient the diagnosis was not suspected clinically. In the initial phase, bone scintigraphy showed d...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(89)80259-4
更新日期:1989-09-01 00:00:00
abstract:AIM:To assess whether patients taking aspirin were more likely to experience bleeding complications after transrectal ultrasound (TRUS)-guided prostate biopsy. MATERIALS AND METHODS:Three hundred and eighty-seven patients taking aspirin who underwent prostate biopsy over a 3.5 year period and 731 patients not taking a...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2007.09.014
更新日期:2008-05-01 00:00:00
abstract::Lymphomas are generally considered tumours of lymph nodes, but up to 40% arise extranodally. This group shows distinctive pathological, radiological, and clinical features. Different subtypes of extranodal lymphoma may show sufficiently specific radiological features to be of significant value in both establishing a d...
journal_title:Clinical radiology
pub_type: 杂志文章,评审
doi:10.1016/j.crad.2008.11.001
更新日期:2009-06-01 00:00:00
abstract::This article will specifically deal with preparing for consultant interviews in clinical radiology by providing a list of carefully selected resources comprising of training courses and internet sites available for trainee radiologists nearing the end of their training. It will also be of use to established consultant...
journal_title:Clinical radiology
pub_type: 杂志文章,评审
doi:10.1016/j.crad.2008.09.006
更新日期:2009-05-01 00:00:00
abstract::Seronegative spondyloarthritis (SpA) represents a group of diseases that share certain genetic, clinical, and radiographic features. Enthesitis, inflammation at the site of tendon insertion into the bone, involving both the axial and the peripheral joints, is an important sign of SpA. Clinical diagnosis of enthesitis,...
journal_title:Clinical radiology
pub_type: 杂志文章,评审
doi:10.1016/j.crad.2012.07.018
更新日期:2013-03-01 00:00:00
abstract::The accuracy of high field, endorectal MRI in the staging of localized prostate cancer has been the focus of many previous reports. We present our findings with a mid-field magnet. Twenty-two patients with clinically localized prostate cancer were prospectively staged with endorectal MRI using a 0.5 T magnet. All pati...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(96)80133-4
更新日期:1996-08-01 00:00:00
abstract:AIM:To compare the diagnostic utility of pelvic ultrasound (US) and magnetic resonance imaging (MRI) on the clinical decision to proceed with uterine artery embolization (UAE). MATERIALS AND METHODS:Over 2 years, 180 consecutive women (mean age 43) sought consultation for UAE, 116 underwent pelvic US and MRI before po...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2010.08.005
更新日期:2011-01-01 00:00:00
abstract::The common femoral artery is commonly used as arterial access for a wide range of radiological and cardiological procedures. Pseudoaneurysm formation is the most common arterial complication of femoral artery catheterization, and is diagnosed using colour Doppler ultrasound. Ultrasound-guided thrombin injection has re...
journal_title:Clinical radiology
pub_type: 杂志文章,评审
doi:10.1016/j.crad.2008.07.001
更新日期:2008-12-01 00:00:00
abstract:AIM:To assess the efficacy of dynamic contrast-enhanced magnetic resonance imaging (DCE MRI) in prediction of the response to treatment in patients with head and neck cancers (HNCs). METHODS AND MATERIALS:Twenty-one patients with advanced HNC, suitable for concurrent chemoradiotherapy underwent DCE MRI, for the quanti...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2012.03.005
更新日期:2012-09-01 00:00:00
abstract:AIM:To determine the diagnostic value of integrating three-dimensional perfused blood volume (3D PBV) with multimodal computed tomography (CT) [non-enhanced CT (NECT), CT perfusion (CTP), and CT angiography (CTA)] in acute ischaemic stroke. MATERIALS AND METHODS:NECT, CTP, and CTA were performed in 25 acute ischaemic ...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2011.01.003
更新日期:2011-06-01 00:00:00
abstract::We describe 27 cases of bone tumours or tumour-like lesions where there was spontaneous regression. The follow-up period was 2.8-16.7 years (average, 7.0 years). Fourteen of these cases were no longer visible on plain radiographs. Histological diagnosis included exostosis, eosinophilic granuloma, fibrous dysplasia, fi...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1053/crad.2001.0795
更新日期:2001-11-01 00:00:00
abstract:AIM:To determine the prevalence of radiological anatomy teaching in modern medical curricula. MATERIALS AND METHODS:The present paper details a survey carried out amongst 21 medical schools in the U.K. and Ireland to determine the variability of the inclusion of radiological anatomy in their different curricula. RESU...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1053/crad.2002.1116
更新日期:2002-12-01 00:00:00
abstract:AIM:To assess the morphology and colour Doppler parameters in patients with polycystic ovarian syndrome (PCOS) and also to assess the changes in Doppler parameters in follow-up patients, who underwent treatment. MATERIALS AND METHODS:The study was conducted on 50 women of reproductive age who had clinical and biochemi...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2020.05.023
更新日期:2020-10-01 00:00:00
abstract:AIM:To determine the follow-up protocol for interval assessment of patients following radical nephrectomy for renal cell cancer and to compare them with the recommendations proposed in the literature. METHODS:Consultant urologists across Britain and Ireland completed a postal questionnaire. One follow-up mailing was u...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2006.05.006
更新日期:2006-10-01 00:00:00
abstract::The heart and mediastinal structures can be overlooked at CT pulmonary angiogram (CTPA). This pictorial review will demonstrate the features of cardiac disease that may be evident on a CTPA. CTPA allows assessment of not only the pulmonary arteries for embolism, but also of the bronchi, lung parenchyma, mediastinum an...
journal_title:Clinical radiology
pub_type: 杂志文章,评审
doi:10.1016/j.crad.2004.07.005
更新日期:2005-01-01 00:00:00
abstract::This study reviews prospectively a series of 29 patients who were examined by magnetic resonance imaging (MRI) and discography for degenerative disc disease. All had persistent low-back pain and non-diagnostic initial investigations, including plain films, myelography and/or computed tomography (CT). The imaging chara...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(05)82113-0
更新日期:1990-10-01 00:00:00
abstract::Massive haemoptysis is a respiratory emergency. Computed tomography angiography (CTA) can play a crucial role in assessing the cause and origin of the haemoptysis and directing the interventional radiologist prior to treatment. The bronchial arterial supply and to a lesser extent the non-bronchial systemic arterial su...
journal_title:Clinical radiology
pub_type: 杂志文章,评审
doi:10.1016/j.crad.2011.03.001
更新日期:2011-09-01 00:00:00
abstract::Iocetamic acid (Cholebrin) and calcium ipodate (Solubiloptin) were randomly allocated to two groups of 50 patients. Each patient completed a detailed questionnaire for side effects. There was no significant difference between the contrast media in their ability to opacify the gallbladder. Cholebrin was superior to Sol...
journal_title:Clinical radiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/s0009-9260(78)80046-4
更新日期:1978-09-01 00:00:00
abstract:AIM:To differentiate uric acid from non-uric acid renal stones based on their spectral attenuation values. MATERIALS AND METHODS:The present study was approved by the institutional review board and the need for informed consent was waived. Thirty-three consecutive patients (21 men, 12 women; mean age 55 years) with sy...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2017.01.018
更新日期:2017-06-01 00:00:00
abstract:AIMS:To test the hypothesis that the improved resolution afforded by 16-detector computed tomography (CT) would translate to better stress fracture detection when compared with skeletal scintigraphy. MATERIALS AND METHODS:Thirty-three cases of suspected stress fractures in 26 patients were investigated using skeletal ...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2005.05.014
更新日期:2005-10-01 00:00:00
abstract:AIM:To compare the complications and outcomes of Neuroform and Enterprise stents in the treatment of unruptured wide-necked aneurysms. MATERIALS AND METHODS:Under the auspices of the institutional review board, a review of a prospectively collected patient log identified 130 patients who underwent elective stent-assis...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2014.07.015
更新日期:2014-12-01 00:00:00
abstract::The ability to deliver cells in appropriate doses to their targeted site of action is a well-known obstacle to optimising stem cell therapy. Systemic administration of cells results in pulmonary "trapping," which significantly decreases the number of available circulating cells to impact underlying disorders. Directed...
journal_title:Clinical radiology
pub_type: 杂志文章,评审
doi:10.1016/j.crad.2016.01.005
更新日期:2016-04-01 00:00:00
abstract::Thirty-five cases of 'Q' fever have been admitted and confirmed serologically over the past 20 years. Thirty-two of these cases had chest films on admission, and lung changes were present in 87%. The lung changes were: 1. Multiple round segmental consolidations, 5--10 cm in diameter, of ground glass density and usuall...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(78)80092-0
更新日期:1978-07-01 00:00:00
abstract::PURPOSE: To determine whether it is possible to select patients with obstructive hydrocephalus, in the under 1 age group for endoscopic third ventriculocisternostomy (ETV) using pre-operative T2 weighted turbo spin echo (T2W-TSE) sagittal sequence Magnetic Resonance (MR) imaging; and to assess ventriculocisternostomy ...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1053/crad.2000.0645
更新日期:2000-12-01 00:00:00
abstract:AIM:A number of imaging techniques have been used for the pre-operative assessment of patients for lung volume reduction surgery (LVRS). We evaluated whether data currently acquired from perfusion scintigrams and cine MR of the diaphragm are obtainable from high resolution CT (HRCT) of the thorax. MATERIALS AND METHOD...
journal_title:Clinical radiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1053/crad.1999.0326
更新日期:2000-01-01 00:00:00
abstract:AIMS:To assess the efficacy of ultrasound as a screening tool in the assessment of soft-tissue masses referred from primary care and to investigate the incidence of malignancy in this population. MATERIALS AND METHODS:Retrospective analysis was performed on patients who underwent ultrasound for a suspected soft-tissue...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2018.07.102
更新日期:2018-12-01 00:00:00
abstract:AIM:To determine whether radiographers are able to perform and interpret barium swallows and meals (BSM) to an acceptable standard. MATERIALS AND METHODS:A retrospective audit was performed of all radiographer-managed BSMs over a 4-year period in an acute hospital. Descriptive statistics were used to analyse patient d...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2009.04.008
更新日期:2009-08-01 00:00:00
abstract::Endovascular mechanical thrombectomy (MT) is reserved for acute ischaemic stroke secondary to large vessel occlusion. The various MT techniques employed in the treatment of hyperacute strokes are constantly evolving with new devices and improvisation of existing technology (Wahlgren, et al 2016). In this review, we de...
journal_title:Clinical radiology
pub_type: 杂志文章,评审
doi:10.1016/j.crad.2017.10.022
更新日期:2018-05-01 00:00:00