Abstract:
:The contribution of intravenous contrast medium to the final diagnosis was assessed in 300 patients undergoing routine axial computed tomography (CT) of the brain. Two-hundred-and-twelve patients presented with symptoms or signs suggesting focal intracranial pathology and 88 with non-focal features. A total of 110 post-contrast scans were abnormal. The differential diagnosis was altered in 15 patients (5%) following contrast enhancement, 13 of whom presented with focal symptoms and signs. In three patients with normal plain scans and symptoms and signs suggesting focal intracranial pathology abnormalities were only seen after contrast medium and in only one was the lesion surgically treatable. In a further 15 patients (5%) contrast enhancement increased the certainty of the diagnosis that had been made on the uncontrasted scan. We feel that when the uncontrasted scan is normal contrast enhancement is only helpful in a limited number of patients with symptoms and signs suggesting focal intracranial pathology. Contrast enhancement is still important in differentiating abnormalities seen on the unenhanced scan even with modern high resolution CT scanners.
journal_name
Clin Radioljournal_title
Clinical radiologyauthors
Bernard MS,Hourihan MD,Adams Hdoi
10.1016/s0009-9260(05)80860-8subject
Has Abstractpub_date
1991-09-01 00:00:00pages
161-4issue
3eissn
0009-9260issn
1365-229Xjournal_volume
44pub_type
杂志文章abstract::Congenital bronchial atresia (CBA) is a rare anomaly that results from a congenital focal obliteration of a proximal segmental or subsegmental bronchus with the normal development of distal structures. The short atretic segment leads to accumulation of mucus within the distal bronchi to form a bronchocoele and underve...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(99)91002-4
更新日期:1999-03-01 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:AIM:To investigate the natural history of untreated small (<3 mm) and microscopic pulmonary arteriovenous malformations (PAVMs) in hereditary haemorrhagic telangiectasia (HHT) in order to discern the optimal frequency of follow-up thoracic computed tomography (CT). MATERIALS AND METHODS:A retrospective analysis was pe...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2016.12.002
更新日期:2017-03-01 00:00:00
abstract::Lumbar spondylolisthesis is a common finding on plain radiographs. The condition has a variety of causes which can be differentiated on the basis of imaging findings. As the treatment is dependent upon the type of spondylolisthesis, it is important for the radiologist to be aware of these features. We present a pictor...
journal_title:Clinical radiology
pub_type: 杂志文章,评审
doi:10.1016/j.crad.2004.07.013
更新日期:2005-05-01 00:00:00
abstract::Extracranial carotid artery aneurysms secondary to accidental injury are rare. We have seen eight lesions of this type in the last 10 years. The aneurysm was produced by blunt trauma in four patients, penetrating shrapnel injury in two, stabbing and electrical injury in one each. The left side was involved in seven pa...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(05)80471-4
更新日期:1991-03-01 00:00:00
abstract::Patients with end-stage renal disease on long term dialysis may develop de novo renal cystic disease. We used ultrasound as a primary screening procedure for renal cysts in 71 patients. In seven patients (10%) the native kidneys could not be identified. In 35 patients renal cysts were identified indicating a prevalenc...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(05)81658-7
更新日期:1990-04-01 00:00:00
abstract::Renal excretion of water soluble iodinated contrast media following oral administration has often been described but no reports describing renal excretion following rectal administration of such contrast have previously been described. We describe a case of renal excretion of diatrizoate methylglucamine (Gastrografin,...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(05)80383-6
更新日期:1992-11-01 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:AIM:To identify the differences between ultrasound (US) features of parathyroid carcinoma (PC) and benign parathyroid (BP) lesions in patients with primary hyperparathyroidism (PHPT). MATERIAL AND METHODS:Twenty-one patients with PC and 64 consecutive patients with BP, whose diagnoses were confirmed at surgery, were e...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2019.10.004
更新日期:2020-03-01 00:00:00
abstract::Radiologically demonstrable abnormalities of the duodenum are common in cystic fibrosis and are most prevalent in the second part of the duodenum. Out of 14 upper gastrointestinal barium studies performed on patients with cystic fibrosis over a period of 10 years, radiographic abnormalities of the duodenum were found ...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(83)80168-8
更新日期:1983-09-01 00:00:00
abstract::Aneurysm of the ductus arteriosus has been reported in children more frequently than in adults [1-4]. The rarity of the lesion explains the low rate of recognition by the radiologist, especially because symptoms are non-specific in most cases. Clinically and radiologically, aneurysm of the ductal diverticulum can be c...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(97)80279-6
更新日期:1997-03-01 00:00:00
abstract::Fibrous dysplasia affecting the spine is unusual. A further 11 cases are reported and the radiological features are described. The complications and difficulties with the diagnosis of this condition are discussed. ...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(88)80222-8
更新日期:1988-09-01 00:00:00
abstract::Axial T2-weighted fat-saturated imaging provides information not readily available from routine lumbar spine magnetic resonance imaging (MRI) protocols and routine inclusion of this sequence in place of axial T1-weighted imaging provides additional diagnostic information that can be obtained without increasing examina...
journal_title:Clinical radiology
pub_type: 杂志文章,评审
doi:10.1016/j.crad.2014.05.006
更新日期:2014-09-01 00:00:00
abstract:AIM:To analyse lower limb angioplasty results using the defined anatomical classification of the Trans-Atlantic Inter-Society Consensus (TASC) in a training environment and to compare the results with published data. MATERIALS AND METHODS:Retrospective, consecutive data were collected for a period of 1 year for all pa...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2011.12.011
更新日期:2012-10-01 00:00:00
abstract:AIM:To determine the diagnostic accuracy of MR imaging in differentiating phaeochromocytoma from other adrenal lesions. MATERIALS AND METHODS:Sixty-seven adrenal masses (65 patients) including 17 phaeochromocytomas were imaged using T2-weighted pulse sequences on 0.6 T and 1.5 T GE MR units. The adrenal lesions were q...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(97)80252-8
更新日期:1997-08-01 00:00:00
abstract:AIM:To evaluate the safety, efficacy, and long-term outcomes of ultrasound-guided radiofrequency ablation (RFA) for the treatment of primary papillary thyroid microcarcinoma (PTMC). MATERIALS AND METHODS:A total of 37 patients with 38 PTMC nodules underwent RFA at a power of 20 W between September 2014 and December 20...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2019.05.012
更新日期:2019-09-01 00:00:00
abstract::Gastrointestinal stromal tumours (GISTs) can lead to emergency situations, such as gastrointestinal bleeding, intestinal obstruction, and tumoural rupture with haemoperitoneum or peritonitis. In addition, if a GIST grows exophytically to a large size, it is often misdiagnosed as a tumour arising from adjacent organs. ...
journal_title:Clinical radiology
pub_type: 杂志文章,评审
doi:10.1016/j.crad.2015.10.025
更新日期:2016-02-01 00:00:00
abstract::A prospective randomised trial was performed to examine the value of ureteric compression in intravenous urography. Calyceal distension improved during the urogram in 68% of kidneys when compression was used, in contrast to an improvement of 43% in patients not receiving compression. In both heavy patients and those w...
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(87)80026-0
更新日期:1987-03-01 00:00:00
abstract::The incidence of bone metastases secondary to adenocarcinoma of the exocrine pancreas is unknown since radiological studies of the bones during life, routine bone scintigrams or extensive examination of the skeleton at autopsy is rarely undertaken in the absence of specific clinical indications. Symptom-producing bone...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(78)80162-7
更新日期:1978-01-01 00:00:00
abstract:AIM:To compare the diagnostic performance of the 2017 (v2017) and 2018 versions (v2018) of the Liver Imaging-Reporting and Data System (LI-RADS) for hepatocellular carcinoma (HCC) using gadoxetic acid-enhanced magnetic resonance imaging (Gd-EOB-MRI) and to evaluate the effect in v2018. MATERIALS AND METHODS:Treatment-...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2019.11.004
更新日期:2020-04-01 00:00:00
abstract::The role of computed tomography (CT) in radiotherapy treatment planning was assessed in a series of 231 patients in whom treatment was planned with radical intent. For each patient, a treatment plan was produced by the best conventional techniques in use at the Middlesex Hospital. Each patient then underwent a CT scan...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(84)80021-5
更新日期:1984-03-01 00:00:00
abstract::The role of ultrasound for the diagnosis of pyloric stenosis has yet to be definitely established. We have carried out 147 ultrasound examinations of 142 infants (99 male and 43 female) with a history of projectile vomiting or the possibility of a pyloric mass. Measurements of the pyloric canal length, transverse pylo...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(05)81849-5
更新日期:1994-04-01 00:00:00
abstract::We studied the reproducibility of measurement of carotid stenosis and assessment of plaque surface morphology on 1001 angiograms from a consecutive series of patients entered into the European Carotid Surgery Trial. Inter-observer agreement (Kappa statistic, 95% confidence interval (CI)) for categorization of carotid ...
journal_title:Clinical radiology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1016/s0009-9260(98)80273-0
更新日期:1998-06-01 00:00:00
abstract::Since 1971, 82 patients with advanced carcinoma of the cervix have been included in a randomised clinical trial in association with the Working Party on Radiotherapy and Hyperbaric Oxygen of the Medical Research Council. External irradiation was given in 10 fractions by an unconventional schedule, either in air or HBO...
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(79)80213-5
更新日期:1979-07-01 00:00:00
abstract::In order to determine whether abdominopelvic computed tomography (CT) offers an alternative to barium enema (BE) for the investigation of the large bowel in frail elderly patients, we have assessed and compared the results of both tests performed in each patient. Thirty-seven patients aged 71 to 88 (mean 80) with a hi...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(05)80108-4
更新日期:1993-07-01 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::Twenty-nine patients with advanced carcinoma of the upper air and food passages were treated by radiotherapy using a 10-fraction three-week scheme, giving 1.2 g/m2 of misonidazole 4 h before each treatment. Complete tumour regression was observed in 24 of the patients, and at a nine-month follow-up the local tumour co...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(81)80166-3
更新日期:1981-03-01 00:00:00
abstract:AIM:To evaluate prospectively the safety of contrast medium injection through standard peripheral intravenous cannulas at standard injection sites during clinical routine using iomeprol 400, a contrast agent with high viscosity. MATERIALS AND METHODS:Three thousand, five hundred and fourteen clinical CT examinations u...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/j.crad.2019.12.013
更新日期:2020-05-01 00:00:00
abstract::Four patients with cervical spine trauma were examined by computerised tomography in addition to standard radiography and additional useful information was thereby gained. The axial projection is particularly useful in studying the cervical spinal canal and neural arch. The examination may be performed rapidly without...
journal_title:Clinical radiology
pub_type: 杂志文章
doi:10.1016/s0009-9260(79)80162-2
更新日期:1979-03-01 00:00:00
abstract:AIM:To evaluate the image quality of contrast-enhanced chest computed tomography (CT) with low tube voltage settings using an iterative reconstruction algorithm (iDose4) and standard dose filtered back projection (FBP) CT in patients with normal body mass index (BMI). MATERIALS AND METHODS:Eighty patients with normal ...
journal_title:Clinical radiology
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.crad.2012.12.009
更新日期:2013-05-01 00:00:00