Abstract:
OBJECTIVES:Magnetic resonance imaging (MRI) acquired on equipment capable of simultaneous MRI and positron emission tomography (PET) could potentially provide the gold standard method for motion correction of PET. To assess the latter, in this study we compared fast 2D and 3D MRI of the torso and used deformation parameters from real MRI data to correct simulated PET data for respiratory motion. METHODS:PET sinogram data were simulated using SimSET from a 4D pseudo-PET image series created by segmenting MR images acquired over a respiratory cycle. Motion-corrected PET images were produced using post-reconstruction registration (PRR) and motion-compensated image reconstruction (MCIR). RESULTS:MRI-based motion correction improved PET image quality at the lung-liver and lung-spleen boundaries and in the heart but little improvement was obtained where MRI contrast was low. The root mean square error in SUV units per voxel compared to a motion-free image was reduced from 0.0271 (no motion correction) to 0.0264 (PRR) and 0.0250 (MCIR). CONCLUSIONS:Motion correction using MRI can improve thoracic PET images but there are limitations due to the quality of fast MRI.
journal_name
Eur Radioljournal_title
European radiologyauthors
Dikaios N,Izquierdo-Garcia D,Graves MJ,Mani V,Fayad ZA,Fryer TDdoi
10.1007/s00330-011-2274-4subject
Has Abstractpub_date
2012-02-01 00:00:00pages
439-46issue
2eissn
0938-7994issn
1432-1084journal_volume
22pub_type
杂志文章abstract:OBJECTIVE:To report the results and implications for workflow following introduction of ESUR guidelines to screen for potential renal insufficiency (RI) in private practice with on-site creatinine measurements. METHODS:A total of 1,766 consecutive outpatients scheduled for contrast-enhanced CT (CECT) completed the ESU...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-010-1754-2
更新日期:2010-08-01 00:00:00
abstract:OBJECTIVES:To determine whether changes in ADC of bone metastases secondary to prostate carcinoma are significantly different in responders compared with progressors on chemotherapy. METHODS:Twenty-six patients with known bone metastases secondary to prostate carcinoma underwent diffusion-weighted MRI of the lumbar sp...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-011-2173-8
更新日期:2011-10-01 00:00:00
abstract:OBJECTIVE:To quantify radiation dose reduction in cardiac computed tomography (CT) using a prospectively triggered mode compared with a retrospective ECG-gated helical mode. METHODS:Absorbed organ doses in cardiac 64-row multidetector CT were quantified using an anthropomorphic male Alderson phantom with 74 thermolumi...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-010-1767-x
更新日期:2010-09-01 00:00:00
abstract:OBJECTIVE:To develop a fully automated AI system to quantitatively assess the disease severity and disease progression of COVID-19 using thick-section chest CT images. METHODS:In this retrospective study, an AI system was developed to automatically segment and quantify the COVID-19-infected lung regions on thick-secti...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-020-07042-x
更新日期:2020-12-01 00:00:00
abstract:OBJECTIVES:To investigate the value of an intravoxel incoherent motion (IVIM) diffusion model for discriminating malignant versus benign mediastinal lymph nodes (MLN). METHODS:Thirty-five subjects with enlarged MLN were scanned at 1.5 Tesla. Diffusion-weighted imaging was performed with eight b-values. IVIM parameters...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-017-5049-8
更新日期:2018-03-01 00:00:00
abstract:OBJECTIVES:To evaluate the safety and efficacy of iopentol 350 mg I/ml (Imagopaque/Ivépaque, Nycomed Imaging AS, Oslo, Norway), a monomeric non-ionic contrast medium for computed tomography, in a large population. To identify predictive factors for patient safety. MATERIALS AND METHODS:One thousand eight hundred and t...
journal_title:European radiology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1007/pl00006874
更新日期:1997-01-01 00:00:00
abstract:OBJECTIVES:This study evaluated the predictive role of 1D, 2D and 3D quantitative, enhancement-based MRI regarding overall survival (OS) in patients with colorectal liver metastases (CLM) following intra-arterial therapies (IAT). METHODS:This retrospective analysis included 29 patients who underwent transarterial chem...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-015-3595-5
更新日期:2015-07-01 00:00:00
abstract::Erdheim-Chester (EC) disease belongs to the group of lipoid granulomatosis. Symmetric sclerosis of the meta- and diaphysis of long tubular bones are pathognomonic radiologic changes. Additionally, other skeletal segments can be affected. Extraskeletal manifestations can occur in almost all organs; lungs, pericardium, ...
journal_title:European radiology
pub_type: 杂志文章,评审
doi:10.1007/s003300050647
更新日期:1999-01-01 00:00:00
abstract::The aim of this study was to describe a new sonographic sign of bone fracture and to determine if it can be helpful in decreasing the number of missed fractures of the proximal humerus. Ultrasound (US) of the shoulder was performed in 57 consecutive patients with shoulder pain and/or disability following trauma. All c...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-006-0331-1
更新日期:2007-03-01 00:00:00
abstract::The aim of the study was to compare prospectively magnetic resonance cholangiography (MRC) and magnetic resonance imaging (MRI) with endoscopic retrograde cholangiography (ERC) in the diagnosis and staging of Klatskin tumours of the biliary tree (hilar cholangiocarcinomas). Forty-six patients with suspected Klatskin t...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-005-0139-4
更新日期:2006-10-01 00:00:00
abstract::Bilioma is a rare complication of traumatic liver injury, and the precise site of bile leak is often difficult to demonstrate with a non-invasive technique. We report a case of post-traumatic bile leak in a 15-year-old girl in whom spiral CT after intravenous cholangiography allowed excellent preoperative demonstratio...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s003300050637
更新日期:1999-01-01 00:00:00
abstract::Almost 15 years after its introduction, endosonography or endoscopic ultrasonography is an important technique in a wide range of gastrointestinal diseases. Other imaging techniques are CT, MRI and barium examination. There is a general consensus that the most important prognostic factor in gastric and colorectal carc...
journal_title:European radiology
pub_type: 杂志文章,评审
doi:10.1007/BF00181129
更新日期:1996-01-01 00:00:00
abstract:OBJECTIVES:To evaluate differences in the tumor response classifications that result from clinical measurements and to compare these response classifications with overall survival for patients with malignant pleural mesothelioma (MPM). METHODS:One hundred thirty-one computed tomography (CT) scans were collected from 4...
journal_title:European radiology
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00330-018-5887-z
更新日期:2019-06-01 00:00:00
abstract:OBJECTIVE:To investigate the impact of automated attenuation-based tube potential selection on image quality and exposure parameters in polytrauma patients undergoing contrast-enhanced thoraco-abdominal CT. METHODS:One hundred patients were examined on a 16-slice device at 120 kV with 190 ref.mAs and automated mA modu...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-014-3197-7
更新日期:2014-07-01 00:00:00
abstract::This technical note describes the use of dynamic MRI in the diagnosis of groin herniations. A review of the anatomy of the groin is presented and 4 representative cases are described. This paper indicates that dynamic MRI can be used to confirm the diagnosis in patients with clinically evident groin herniations. ...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s003300050377
更新日期:1998-01-01 00:00:00
abstract:OBJECTIVE:To validate three proposed definitions of the "solid" component of subsolid nodules, as compared to CT histograms and the use of different window settings, for discriminating the invasiveness of adenocarcinomas in a manner that facilitates routine clinical assessment. METHODS:We retrospectively analyzed 328 ...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-018-5778-3
更新日期:2019-04-01 00:00:00
abstract:OBJECTIVE:To develop and validate a volume-based, quantitative imaging marker by integrating multi-parametric MR images for predicting glioblastoma survival, and to investigate its relationship and synergy with molecular characteristics. METHODS:We retrospectively analysed 108 patients with primary glioblastoma. The d...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-017-4751-x
更新日期:2017-09-01 00:00:00
abstract:OBJECTIVES:To develop an anthropomorphic phantom closely mimicking patient anatomy and to evaluate the phantom for the simulation of computed tomography (CT)-guided procedures. METHODS:Patient CT images were printed with aqueous potassium iodide solution (1 g/mL) on paper. The printed paper sheets were stacked in alte...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-018-5481-4
更新日期:2018-11-01 00:00:00
abstract:OBJECTIVES:To assess feasibility, image quality, and radiation dose of prospectively ECG-triggered coronary CT angiography (CTA) in orthotopic heart transplant (OHT) recipients. METHODS:47 consecutive OHT recipients (40 men, mean age 62.1 ± 10.9 years, mean heart rate 86.3 ± 14.4 bpm) underwent dual-source CTA to rule...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-011-2126-2
更新日期:2011-09-01 00:00:00
abstract:OBJECTIVES:Clinical applications of susceptibility-weighted imaging (SWI) are increasing steadily. The aim of this study is to investigate the appearance of cerebral veins on SWI, which is very sensitive to the deoxyhaemoglobin level in vessels, in pulmonary embolism (PE). METHODS:The cranial SWI images of 19 patients...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-016-4606-x
更新日期:2017-07-01 00:00:00
abstract:OBJECTIVES:To evaluate the feasibility of myocardial blood flow (MBF) by computed tomography from dynamic CT perfusion (CTP) for detecting myocardial ischemia and infarction assessed by cardiac magnetic resonance (CMR) or single-photon emission computed tomography (SPECT). METHODS:Fifty-three patients who underwent st...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-016-4238-1
更新日期:2016-11-01 00:00:00
abstract::The purpose of this study was to compare the accuracy of an automated volumetry software for phantom pulmonary nodules across various 16-slice multislice spiral CT (MSCT) scanners from different vendors. A lung phantom containing five different nodule categories (intraparenchymal, around a vessel, vessel attached, ple...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-006-0562-1
更新日期:2007-08-01 00:00:00
abstract::We report the CT and pathological findings of an intra-abdominal desmoplastic small round-cell tumor in a young man. Computed tomography showed an extensive peritoneal and mesenteric disease with gross bulky masses, direct liver invasion, and lymph node involvement. This entity should be considered in the differential...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s003300051011
更新日期:2000-01-01 00:00:00
abstract::The use of the posteroanterior (PA) technique as a means of dose reduction has been used effectively in radiology departments for chest and abdominal examinations. The aim of this investigation was to establish if the PA lumbar spine projection offers any advantages over the traditional anteroposterior (AP) view in te...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s003309900272
更新日期:2000-01-01 00:00:00
abstract:OBJECTIVES:To compare the three-dimensional (3D)-fast spin-echo (FSE)-Cube with a conventional imaging protocol in evaluation of dacryostenosis. METHODS:Thirty-three patients with epiphora underwent examinations using Cube magnetic resonance dacryocystography (MRD) and a conventional protocol, which included 3D fast-r...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-014-3462-9
更新日期:2015-03-01 00:00:00
abstract:OBJECTIVES:Various imaging methods have been evaluated regarding non-invasive differentiation of renal cell carcinoma (RCC) subtypes. Dual-energy computed tomography (DECT) allows iodine concentration (IC) analysis as a correlate of tissue perfusion. Microvascular density (MVD) in histopathology specimens is evaluated ...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-019-06298-2
更新日期:2020-01-01 00:00:00
abstract:OBJECTIVE:Osteoporosis is a prevalent and treatable condition, but it remains underdiagnosed. In this study, a deep learning-based system was developed to automatically measure bone mineral density (BMD) for opportunistic osteoporosis screening using low-dose chest computed tomography (LDCT) scans obtained for lung can...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-020-06679-y
更新日期:2020-07-01 00:00:00
abstract:OBJECTIVES:Cerebral blood flow (CBF) estimates from arterial spin labelling (ASL) show unexplained variability in older populations. We studied the impact of variation of haematocrit (Hct) on CBF estimates in a tri-ethnic elderly population. MATERIALS AND METHODS:Approval for the study was obtained from the Fulham Res...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-019-06096-w
更新日期:2019-10-01 00:00:00
abstract::Bronchioloalveolar carcinoma (BAC) is a polymorphic lung cancer the incidence of which is rising. The presence of intratumoral radiolucencies is an important feature of bronchioloalveolar carcinoma. The aim of this study was to present pictorially the spectrum of intratumoral radiolucencies visible in BAC. In 57 BACs ...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s003300050627
更新日期:1999-01-01 00:00:00
abstract:OBJECTIVES:To investigate inter-scan and inter-scanner variation of iodine concentration (IC) and attenuation in virtual monoenergetic images at 65 keV (HU65keV) in patients with repeated abdominal examinations on dual-source (dsDECT), rapid kV switching (rsDECT), and dual-layer detector DECT (dlDECT). METHODS:We retr...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-020-07611-0
更新日期:2021-01-14 00:00:00