Abstract：
AIM:To quantify the dose reduction and ensure that the use of a split-bolus protocol provided sufficient vascular enhancement. MATERIALS AND METHODS:Between 1 January 2014 and 31 May 2014, both split bolus and traditional two-phase scans were performed on a single CT scanner (SOMATOM Definition AS+, Siemens Healthcare) using a two-pump injector (Medrad Stellant). Both protocols used Siemens' proprietary tube current and tube voltage modulation techniques (CARE dose and CARE kV). The protocols were compared retrospectively to assess the dose-length product (DLP), aortic radiodensity at the level of the coeliac axis and radiodensity of the portal vein. RESULTS:There were 151 trauma CT examinations during this period. Seventy-eight used the split-bolus protocol. Seventy-one had traditional two-phase imaging. One patient was excluded as they were under the age of 18 years. The radiodensity measurements for the portal vein were significantly higher (p<0.001) in the split-bolus protocol. The mean aortic enhancement in both protocols exceeded 250 HU, although the traditional two-phase protocol gave greater arterial enhancement (p<0.001) than the split-bolus protocol. The split-bolus protocol had a significantly lower (p<0.001) DLP with 43.5% reduction in the mean DLP compared to the traditional protocol. CONCLUSION:Split-bolus CT imaging offers significant dose reduction for this relatively young population while retaining both arterial and venous enhancement.
journal_name
Clin Radioljournal_title
Clinical radiologyauthors
Leung V,Sastry A,Woo TD,Jones HRdoi
10.1016/j.crad.2015.05.014subject
Has Abstractpub_date
2015-10-01 00:00:00pages
1110-5issue
10eissn
0009-9260issn
1365-229Xpii
S0009-9260(15)00254-8journal_volume
70pub_type
杂志文章abstract：:A wide spectrum of congenital and acquired abnormalities can affect the superior vena cava (SVC). Congenital anomalies can present either as incidental findings or be associated with underlying cardiac abnormalities; these include left-sided or double SVCs and anomalous venous drainages. Acquired conditions involving ...
journal_title：Clinical radiology
pub_type： 杂志文章,评审
doi：10.1016/j.crad.2007.04.001
更新日期：2007-09-01 00:00:00
abstract：:Ongoing research on malignant and normal cell biology has substantially enhanced the understanding of the biology of cancer and carcinogenesis. This has led to the development of methods to image the evolution of cancer, target specific biological molecules, and study the anti-tumour effects of novel therapeutic agent...
journal_title：Clinical radiology
pub_type： 杂志文章,评审
doi：10.1016/j.crad.2015.06.082
更新日期：2015-10-01 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：:This study evaluated an open access general practitioner radiological service. Questionnaires were completed in 216 out of 250 cases both before and after radiological examination. Chests and specials (bariums, intravenous urography, ultrasound) were most often of diagnostic value when confirming normality, while othe...
journal_title：Clinical radiology
pub_type： 杂志文章
doi：10.1016/s0009-9260(89)80088-1
更新日期：1989-03-01 00:00:00
abstract：:We have performed percutaneous angioplasty of the innominate and carotid arterial stenoses in a high risk patient with proximal disease involving the vessels arising from the aortic arch and seriously limiting blood flow to all four cerebral vessels. The patient also had severe left main and triple vessel coronary art...
journal_title：Clinical radiology
pub_type： 杂志文章
doi：10.1016/s0009-9260(05)81626-5
更新日期：1990-07-01 00:00:00
abstract：AIM:To assess the impact of mammotome biopsy on preoperative diagnosis rate. METHODS:A prospective study was undertaken to examine the referral patterns, radiological abnormalities, sensitivity, specificity and outcome of the first 150 patients undergoing mammotome biopsy at our institution. Most of the referrals were...
journal_title：Clinical radiology
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doi：10.1016/j.crad.2005.08.017
更新日期：2006-03-01 00:00:00
abstract：AIM:To determine the frequency of and reasons for false-negative breast magnetic resonance imaging (MRI) examinations in high-risk women undergoing annual screening. MATERIALS AND METHODS:The family history clinic database was interrogated and women at high risk of breast cancer who had undergone screening MRI and bee...
journal_title：Clinical radiology
pub_type： 杂志文章
doi：10.1016/j.crad.2016.10.020
更新日期：2017-03-01 00:00:00
abstract：:The thigh regions of 10 patients suffering from polymyositis were examined by magnetic resonance imaging (MRI) at 1.5 T; follow-up examinations were performed in all patients. MRI findings were correlated with findings at physical examination and serological parameters. In four patients focal areas of hyperintensity o...
journal_title：Clinical radiology
pub_type： 杂志文章
doi：10.1016/s0009-9260(05)80305-8
更新日期：1993-10-01 00:00:00
abstract：:Thyroglossal fistulography is poorly documented in the radiological literature. An illustrative case is presented, highlighting the technique employed and the significance of its findings. The taste of contrast medium as it spills over the tongue is a useful additional sign in the successful demonstration of a fistulo...
journal_title：Clinical radiology
pub_type： 杂志文章
doi：10.1016/s0009-9260(05)80017-0
更新日期：1992-04-01 00:00:00
abstract：OBJECTIVE:To report the computed tomography (CT) features of afferent loop syndrome which is often clinically unsuspected. MATERIALS AND METHODS:The CT studies of five patients with afferent loop syndrome were reviewed. These patients had undergone gastroenterostomy and other surgical procedures, for malignant neoplas...
journal_title：Clinical radiology
pub_type： 杂志文章,多中心研究
doi：
更新日期：2002-09-01 00:00:00
abstract：:Ultrasonic imaging of the pancreas is often impaired by overlying bowel gas. Oxygen therapy has, in the past, been shown to be effective in reducing the gas in the cysts of pneumatosis coli. Using the same hypothesis, a randomized, single blind study comparing ultrasonic imaging of the pancreas with and without prior ...
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(05)82961-7
更新日期：1995-01-01 00:00:00
abstract：:Injury to the renal artery following blunt trauma is detected increasingly due to widespread and early use of multidetector computed tomography (CT), but optimal treatment remains controversial as no guidelines are available. This review illustrates the spectrum of imaging findings of traumatic renal artery dissection...
journal_title：Clinical radiology
pub_type： 杂志文章,评审
doi：10.1016/j.crad.2020.08.029
更新日期：2021-02-01 00:00:00
abstract：:Paraneoplastic syndromes are a heterogeneous group of disease presentations caused by underlying tumours. As they are non-metastatic in nature an intensive diagnostic evaluation is warranted to identify potentially curable lesions. The selection of the appropriate method of imaging is important in these cases, especia...
journal_title：Clinical radiology
pub_type： 杂志文章,评审
doi：10.1016/j.crad.2007.06.005
更新日期：2007-11-01 00:00:00
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 sequenti...
journal_title：Clinical radiology
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.crad.2010.02.016
更新日期：2010-11-01 00:00:00
abstract：:The absorption of vitamin B12 and of a synthetic bile acid analogue 75SeHCAT was measured simultaneously in 26 patients presenting with persistent diarrhoea following pelvic irradiation for treatment of carcinoma of the cervix. Four groups were identified, namely patients with isolated bile acid malabsorption, patient...
journal_title：Clinical radiology
pub_type： 杂志文章
doi：10.1016/s0009-9260(85)80059-3
更新日期：1985-05-01 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：:The clinical findings in 12 patients who exhibited marked to-and-fro peristalsis in the duodenum with extrinsic compression of the third part and proximal dilatation at barium meal examination are described. In nine cases the compression was thought to be due to the superior mesenteric artery and its mesentery. In two...
journal_title：Clinical radiology
pub_type： 杂志文章
doi：10.1016/s0009-9260(82)80358-9
更新日期：1982-01-01 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：:Serial changes in carbon monoxide uptake (KCO or DLCO/VA) were used to monitor episodes of pulmonary capillary haemorrhage in Goodpasture's syndrome (13 cases), immune complex nephritis (three cases) and idiopathic haemosiderosis (one case). Air-space shadowing on the chest X-ray (on a scoring system 0 to 12) was asse...
journal_title：Clinical radiology
pub_type： 杂志文章
doi：10.1016/s0009-9260(79)80221-4
更新日期：1979-07-01 00:00:00
abstract：INTRODUCTION:Conventional CT demonstrates pathology of the thoracic aorta. This study aimed to evaluate the additional contributions to surgical planning of multiplanar reformatting, maximum intensity projections and three-dimensional (3-D) reconstruction. DESIGN:Retrospective. SUBJECT AND METHODOLOGY: Fifty-three pat...
journal_title：Clinical radiology
pub_type： 杂志文章
doi：10.1016/s0009-9260(98)80100-1
更新日期：1998-03-01 00:00:00
abstract：AIM:To evaluate the value of magnetic resonance (MR) diffusion-weighted imaging (DWI) and apparent diffusion coefficients (ADC) maps in the diagnosis of intraparenchymal epidermoid cysts (ECs). MATERIALS AND METHODS:Six cases of histopathologically proven intraparenchymal ECs were studied. All patients were examined w...
journal_title：Clinical radiology
pub_type： 杂志文章
doi：10.1016/j.crad.2008.01.008
更新日期：2008-07-01 00:00:00
abstract：AIM:To determine the clinical value of scaphoid and pronator fat stripes in identifying occult underlying scaphoid and distal radius fractures, respectively. MATERIALS AND METHODS:In our department, all patients with clinically suspected scaphoid fractures and normal scaphoid series of radiographs undergo magnetic res...
journal_title：Clinical radiology
pub_type： 杂志文章
doi：10.1016/s0009-9260(03)00230-7
更新日期：2003-10-01 00:00:00
abstract：:Hip arthroplasty is an extremely common orthopaedic procedure and there is a wide array of implants that are in current use in the UK. The follow-up of patients who have undergone insertion of a hip prosthesis is shifting from a consultant-lead hospital service towards primary care. As this change in patient care cont...
journal_title：Clinical radiology
pub_type： 杂志文章,评审
doi：10.1016/j.crad.2009.03.011
更新日期：2009-10-01 00:00:00
abstract：AIM:To report the authors' experience of focal nodular haematopoietic marrow hyperplasia (FNHMH) and diffuse haematopoietic marrow hyperplasia (DHMH) clinically masquerading as skip, distant, or disseminated metastasis in seven patients with underlying malignant neoplasms. MATERIALS AND METHODS:Five patients with FNHM...
journal_title：Clinical radiology
pub_type： 杂志文章
doi：10.1016/j.crad.2016.10.015
更新日期：2017-03-01 00:00:00
abstract：UNLABELLED:This review considers the process of contracting for a picture archiving and communication system (PACS) using the private finance initiative (PFI) managed service route. The PFI process is reviewed and the advantages and disadvantages of a managed service detailed. During contract negotiations several areas...
journal_title：Clinical radiology
pub_type： 杂志文章,评审
doi：10.1053/crad.2001.0901
更新日期：2002-03-01 00:00:00
abstract：:The Askin tumour is a highly malignant primitive neuroectodermal tumour (PNET) of the chest wall occurring in children and young adults. We describe three cases to illustrate the clinical and radiological aspects of this tumour, which are not well documented. Patients present with a chest wall mass, pain and constitut...
journal_title：Clinical radiology
pub_type： 杂志文章,评审
doi：10.1016/s0009-9260(05)80348-4
更新日期：1991-01-01 00:00:00
abstract：AIM:To investigate the relationship between mammographic breast density (MGD) and background parenchymal enhancement (BPE) at breast MRI and histopathological features of invasive breast cancers. MATERIALS AND METHODS:A total of 178 women with unilateral invasive breast cancer who preoperatively underwent mammography ...
journal_title：Clinical radiology
pub_type： 杂志文章
doi：10.1016/j.crad.2015.02.017
更新日期：2015-07-01 00:00:00
abstract：AIM:To investigate how commonly valuable diagnostic information regarding the frontotemporal dementias (FTDs) may be missed on routine radiological reporting. MATERIALS AND METHODS:The magnetic resonance imaging (MRI) examination results of a series of 39 consecutive patients in whom the diagnosis was initially though...
journal_title：Clinical radiology
pub_type： 杂志文章
doi：10.1016/j.crad.2015.09.008
更新日期：2016-01-01 00:00:00
abstract：:A prospective study of 333 out-patients assessed the accuracy of determining colonic cleansing from the plain abdominal radiograph. The results indicate that the amount of colon contaminated with faeces was significantly underestimated and the difference in efficacy between the best and worst preparation regimens coul...
journal_title：Clinical radiology
pub_type： 杂志文章
doi：10.1016/s0009-9260(83)80386-9
更新日期：1983-01-01 00:00:00
abstract：:We report a case of congenital cerebral glioblastoma. The initial antenatal ultrasound scan showed a peripheral area of high reflectivity within the right cerebral hemisphere. A subsequent scan showed that the area of high reflectivity had increased in size to completely fill the hemisphere, with shift of the falx and...
journal_title：Clinical radiology
pub_type： 杂志文章
doi：10.1016/s0009-9260(05)80511-2
更新日期：1991-08-01 00:00:00
