Abstract:
AIM:To evaluate the feasibility of a low-dose contrast medium protocol for 64-detector row computed tomography angiography (CTA) of the neck using a low-tube-voltage/high-tube-current setting. MATERIALS AND METHODS:A phantom study was performed using 64-detector row spiral CT at multiple tube voltage and current settings. Iodine contrast medium attenuation curves were acquired by processing and used to select the best contrast medium-to-noise ratio (CNR). A prospective clinical study was then performed on 84 patients requiring neck CTA. Patients were randomly divided into two groups of 42. Group A was examined using the conventional imaging protocol (120 kV, 400 mAs) and group B was examined at 80 kV and 600 mAs along with a 50% reduction in contrast medium dose. The CT dose index-volume (CTDI(vol)), background noise (BN), and CNR were measured and statistically analysed. Various image quality criteria were evaluated by two senior radiologists using a qualitative five-point scale. RESULTS:Comparing group B with A, CTDIvol decreased by 54% (B: 27.48 mGy, A: 59.11 mGy), however, the CNR increased by 50%. The mean attenuation, which was caused by venous streak artefacts, was significantly lower in group B than A. Qualitative image analysis found that all criteria were significantly better for group B than A. CONCLUSION:At 64-detector row spiral CT, the low-tube-voltage/high-tube-current with low-dose contrast medium protocol was superior to the conventional protocol regarding radiation dose, venous streak artefacts, and image quality, and is feasible for CTA of the neck.
journal_name
Clin Radioljournal_title
Clinical radiologyauthors
Xia W,Wu JT,Yin XR,Wang ZJ,Wu HTdoi
10.1016/j.crad.2013.12.001subject
Has Abstractpub_date
2014-04-01 00:00:00pages
e183-9issue
4eissn
0009-9260issn
1365-229Xpii
S0009-9260(13)00570-9journal_volume
69pub_type
杂志文章,随机对照试验abstract::A review of imaging in the acquired immune deficiency syndrome (AIDS) is presented. The imaging features can be conveniently categorized according to whether the presenting complications are infective (bacterial, protozoal, or fungal), bronchiectasis, neoplastic (Kaposi's sarcoma, AIDS-related lymphoma, or lymphoproli...
journal_title:Clinical radiology
pub_type: 杂志文章,评审
doi:10.1016/s0009-9260(98)80146-3
更新日期:1998-08-01 00:00:00
abstract::Conduit volvulus is a very rare complication of ileal loop diversion. To date it has not been described in association with parastomal herniae. We report two such cases. Antegrade nephrostogram established the diagnosis and nephrostomy drainage facilitated spontaneous resolution of the volvulus with return to baseline...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(05)83052-1
更新日期:1995-03-01 00:00:00
abstract::A prospective blinded comparison of ultrasonography (US) and oral cholecystography (OCG) was performed in 100 patients with symptomatic gall-stones to determine whether US would enable an accurate assessment of cystic duct patency to be made. Patency of the cystic duct was defined as gall-bladder opacification on OCG ...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(05)80031-5
更新日期:1992-07-01 00:00:00
abstract:AIM:To determine the rate of finding incidental pulmonary embolisms (PE) at staging or follow-up chest computed tomography (CT) in oncology patients. MATERIALS AND METHODS:Three hundred and eighty-five consecutive chest CT examinations, performed in patients with cancer, were prospectively assessed during a 9-month pe...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2005.09.002
更新日期:2006-01-01 00:00:00
abstract:AIM:To evaluate the effect of abdominal aortic aneurysm wall calcification on subsequent sac shrinkage after endovascular repair. MATERIALS AND METHODS:Seventy-three patients underwent endovascular aneurysm repair. The degree of sac wall calcification on pre-procedural computed tomography (CT) examination was graded f...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2005.05.020
更新日期:2005-12-01 00:00:00
abstract::Patients with leukaemia, on anticoagulant therapy, or with disseminated intravascular coagulation may develop occult pulmonary haemorrhage; it will mimic pulmonary oedema, pulmonary hemosiderosis or opportunistic infections. It can be diagnosed by bronchopulmonary lavage. The radiographic changes are described and the...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(78)80217-7
更新日期:1978-03-01 00:00:00
abstract:AIM:To investigate the presence of fatty infiltrate in the cervical extensor musculature in patients with insidious-onset neck pain to better understand the possible pathophysiology underlying such changes in chronic whiplash-associated disorders (WAD). MATERIALS AND METHODS:A sample of convenience of 23 women with pe...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2007.11.011
更新日期:2008-06-01 00:00:00
abstract::Small intestinal tumours are rare, forming 1% of all gastrointestinal tumours; most occur in the duodenum. Villous adenomas form only a very small proportion of the duodenal tumours. They usually occur in the periampullary region and show a marked propensity for malignant change. The usual mode of presentation is with...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(05)80040-6
更新日期:1992-07-01 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 examine the sonographic features of shunt vessels derived from the splenic vein at splenic hilum (SS), and explore the relationship between the SS pattern and clinical presentations. MATERIALS AND METHODS:This prospective study in cirrhotic patients consisted of study I (n = 15), which compared the anatomical f...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2013.11.001
更新日期:2014-03-01 00:00:00
abstract::Systemic lupus erythematosus (SLE) is a well recognized cause of an acute abdomen. What is less well recognized is that the underlying pathology can be varied. The computed tomography (CT) and ultrasound appearances of the gall-bladder in a case of SLE serositis are shown. The imaging findings were strongly suggestive...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(05)80670-1
更新日期:1991-12-01 00:00:00
abstract::Between January 1994 and December 1996 72 patients were treated with 76 Gianturco oesophageal stents for oesophageal obstruction or perforation. The patients were followed prospectively in order to determine the effectiveness in improving dysphagia, to establish long term patency, survival times and complications. The...
journal_title:Clinical radiology
pub_type: 临床试验,杂志文章
doi:10.1016/s0009-9260(98)80293-6
更新日期:1998-09-01 00:00:00
abstract:AIMS:Magnetic resonance colonography (MRC) is emerging as a potential complementary investigation for the diagnosis of colorectal cancer (CRC) and also for benign pathology such as diverticular disease. A meta-analysis reporting the use of MRC is yet to be performed. The aim of this study was to evaluate the diagnostic...
journal_title:Clinical radiology
pub_type: 杂志文章,meta分析
doi:10.1016/j.crad.2005.04.015
更新日期:2005-09-01 00:00:00
abstract::Antenatal diagnosis of lung abnormalities by ultrasound has been a much more frequent occurrence in recent years. There is a range of appearances from uniform increased echogenicity through to lesions containing large echo-free areas. Bilateral uniformly increased echogenicity has a poor outlook but in all other situa...
journal_title:Clinical radiology
pub_type: 杂志文章,评审
doi:10.1016/s0009-9260(98)80188-8
更新日期:1998-11-01 00:00:00
abstract::Training in interventional radiology (IR) relies on a traditional apprenticeship; to protect patients, expert supervision is mandatory until knowledge, attitudes and practical skills have been certified as satisfactory. However, the current quality of IR training is threatened by reduced time for trainees to learn, as...
journal_title:Clinical radiology
pub_type: 杂志文章,评审
doi:10.1016/j.crad.2006.01.013
更新日期:2006-07-01 00:00:00
abstract:AIM:To determine the optimum approach for double-pigtail stent placement in malignant ureteric obstruction. PATIENTS AND METHODS:Retrograde stent placement was attempted in a consecutive series of patients presenting with malignant ureteric obstruction. If retrograde stent placement was unsuccessful, percutaneous neph...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2004.11.014
更新日期:2005-05-01 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:AIM:To evaluate the radiological and histopathological features of hepatic inflammatory myofibroblastic tumours (IMTs), and improve the understanding of this tumour. MATERIALS AND METHODS:A retrospective analysis of radiological and histopathological features of 10 cases of IMT was carried out from May 2003 to Septemb...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2013.05.097
更新日期:2013-11-01 00:00:00
abstract::Twenty-seven patients with a T1 or T2 N0M0 breast carcinoma were treated by local excision of the lump followed by radical radiotherapy, using orthovoltage X-rays. The crude survival rate was 100% at three years, 92% at five years, 95% at 10 years. The local recurrence rate was 8% at three years, 12% at five years, 10...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(81)80246-2
更新日期:1981-01-01 00:00:00
abstract:AIM:To develop and evaluate a radiomics composite model for predicting disease-free survival (DFS) in stage I solid lung adenocarcinoma, and compare it to a simple radiomics model. MATERIALS AND METHODS:Patients of pathological stage I solid lung adenocarcinoma treated with lobectomy (n = 119) were enrolled retrospect...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2020.03.019
更新日期:2020-07-01 00:00:00
abstract:AIM:To demonstrate the magnetic resonance imaging (MRI) appearances of intact and ruptured Trilucent TM implants with imaging and surgical correlation. The appearances of the implant transponder artefact are also described MATERIALS AND METHODS:A retrospective review of the MRI findings in 34 patients with bilateral s...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1053/crad.2001.0767
更新日期:2002-04-01 00:00:00
abstract:AIM:To describe the magnetic resonance imaging (MRI) appearances in patients with a clinical history suggestive of vertebral osteomyelitis and discitis who underwent MRI very early in their clinical course. MATERIALS AND METHODS:A retrospective review of the database of spinal infections from a spinal microbiological ...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2010.03.015
更新日期:2010-12-01 00:00:00
abstract::The findings in 50 patients examined by computed tomography (CT) of the pituitary fossa are described. The appearances in 43 were judged to be abnormal, four were normal and three were 'doubtful'. Abnormal features included deviation of the pituitary stalk (seven), localised increased enhancement after intravenous inj...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(84)80094-x
更新日期:1984-07-01 00:00:00
abstract::Percutaneous high brachial aortography with a small diameter catheter (5 gauge) was used as an alternative to the translumbar approach in 45 patients in whom access via the femoral route was not considered possible. Only one serious complication occurred: the late development of a bleeding false aneurysm in a patient ...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(86)80036-8
更新日期:1986-11-01 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::The symphysis pubis is demonstrated on many conventional radiographic and cross-sectional examinations and abnormality of the symphysis pubis is a common imaging finding with numerous possible causes. Many significant disorders that affect the symphysis pubis cause it to appear widened, eroded, or destroyed on imaging...
journal_title:Clinical radiology
pub_type: 杂志文章,评审
doi:10.1016/j.crad.2012.03.021
更新日期:2013-02-01 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
pub_type: 杂志文章
doi:10.1016/j.crad.2005.08.017
更新日期:2006-03-01 00:00:00
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...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2015.05.014
更新日期:2015-10-01 00:00:00
abstract:AIM:To compare the performance of a direct digital mammography system with normal-view and magnified-view conventional screen-film methods using quality control phantoms. MATERIALS AND METHODS:Using a Siemens Mammomat((R))3000 and an Opdima((R))digital spot imaging and biopsy attachment, film and direct digital images...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1053/crad.2000.0521
更新日期:2000-10-01 00:00:00
abstract::In this review the imaging features of a range of parotid lesions are presented and the roles of ultrasound (US), computed tomography (CT) and magnetic resonance imaging (MRI) in the assessment of parotid disease are discussed. ...
journal_title:Clinical radiology
pub_type: 杂志文章,评审
doi:10.1053/crad.2001.0865
更新日期:2002-08-01 00:00:00