Abstract:
OBJECTIVES:To image the pedunculopontine tegmental nucleus (PPN), a deep brain stimulation (DBS) target for Parkinson disease, using MRI with validated results. METHODS:This study used the MP2RAGE sequence with high resolution and enhanced grey-white matter contrast on a 7-T ultra-high-field MRI system to image the PPN as well as a diffusion spectrum imaging method on a 3-T MRI system to reconstruct the main fibre systems surrounding the PPN. The coordinates of the rostral and caudal PPN poles of both sides were measured in relation to the third and fourth ventricular landmarks on the 7-T image. RESULTS:The boundary of the PPN was delineated, and showed morphology consistent with previous histological works. The main fibres around the PPN were reconstructed. The pole coordinate results combined with the fibre spatial relationships validate the imaging results. CONCLUSIONS:A practical protocol is provided to directly localise the PPN using MRI; the position and morphology of the PPN can be obtained and validated by locating its poles relative to two ventricular landmarks and by inspecting its spatial relationship with the surrounding fibre systems. This technique can be potentially used in clinics to define the boundary of the PPN before DBS surgery for treatment of Parkinson disease in a more precise and reliable manner. KEY POINTS:• Combined information helps localise the PPN as a DBS target for PD patients • Scan the PPN at 7 T and measure its coordinates against different ventricular landmarks • Reconstruct the main fibres around the PPN using diffusion spectrum imaging.
journal_name
Eur Radioljournal_title
European radiologyauthors
Cong F,Wang JW,Wang B,Yang Z,An J,Zuo Z,Zhang Z,Zhang YQ,Zhuo Ydoi
10.1007/s00330-017-5299-5subject
Has Abstractpub_date
2018-09-01 00:00:00pages
3882-3892issue
9eissn
0938-7994issn
1432-1084pii
10.1007/s00330-017-5299-5journal_volume
28pub_type
杂志文章abstract:OBJECTIVE:To investigate the intra- and inter-observer reliability and agreement between gray-scale and Doppler ultrasound (US) and contrast-enhanced ultrasound (CEUS) in measuring ablated volume (Va) after radiofrequency ablation (RFA) for benign thyroid nodules. METHODS:A total of 173 patients with 190 benign thyroi...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-020-07398-0
更新日期:2020-10-31 00:00:00
abstract:OBJECTIVES:We assessed the additional value of contrast-enhanced CT versus US for evaluation of acute cervical inflammatory masses and choosing treatment strategy. METHODS:We retrospectively reviewed 210 files of paediatric patients admitted with an acute inflammatory neck mass from 2005 to 2008 (M:F = 108:102, mean a...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-009-1563-7
更新日期:2010-02-01 00:00:00
abstract:OBJECTIVE:The progression of white matter hyperintensities (WMH) varies considerably in adults. In this study, we aimed to predict the progression and related risk factors of WMH based on the radiomics of whole-brain white matter (WBWM). METHODS:A retrospective analysis was conducted on 141 patients with WMH who under...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-020-06676-1
更新日期:2020-06-01 00:00:00
abstract:OBJECTIVE:To evaluate the feasibility, image quality, and radiation dose of automatic spectral imaging protocol selection (ASIS) and adaptive statistical iterative reconstruction (ASIR) with reduced contrast agent dose in abdominal multiphase CT. METHODS:One hundred and sixty patients were randomly divided into two sc...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-016-4349-8
更新日期:2017-01-01 00:00:00
abstract::Because of its sensitivity and high tissue contrast, magnetic resonance imaging (MRI) is the technique of choice for structural imaging in epilepsy. In this review the effect of using optimised scanning protocols and the use of high field MR systems on detection sensitivity is discussed. Also, the clinical relevance o...
journal_title:European radiology
pub_type: 杂志文章,评审
doi:10.1007/s00330-007-0710-2
更新日期:2008-01-01 00:00:00
abstract::The aim of this study was to correlate quantitative dynamic contrast-enhanced MRI (DCE MRI) parameters with microvessel density (MVD) in prostate carcinoma. Twenty-eight patients with biopsy-proven prostate carcinoma were examined by endorectal MRI including multiplanar T2- and T1-weighted spin-echo and dynamic T1-wei...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-003-2025-2
更新日期:2004-02-01 00:00:00
abstract:OBJECTIVE:To assess the heterogeneity of liver fat deposition with MR of the liver in type-2 diabetic (T2D) patients. METHODS:We enrolled 121 consecutive T2D patients. The reference standard was 3.0-T (1)H-MR spectroscopy. Hepatic steatosis was defined as liver fat content (LFC) ≥5.56 %. A triple-echo gradient-echo se...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-012-2468-4
更新日期:2012-10-01 00:00:00
abstract::The purpose of this study was to compare LV function and mass quantification derived from cardiac dual-source CT (DSCT) exams with those obtained by MRI in heart transplant recipients. Twelve heart transplant recipients who underwent cardiac DSCT and MRI examination were included. Double-oblique short-axis 8-mm slice ...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-008-0949-2
更新日期:2008-09-01 00:00:00
abstract:OBJECTIVES:To compare the value of functional future liver remnant (functFLR) to established clinical and imaging variables in prediction of post-hepatectomy liver failure (PHLF) after major liver resection. METHODS:This retrospective, cross-sectional study included 62 patients, who underwent gadoxetic acid enhanced M...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-018-5487-y
更新日期:2018-11-01 00:00:00
abstract::The use of Power Doppler sonography in nodal diseases provides an improvement of early and noninvasive diagnosis of regional metastatic involvement. By using Power Doppler sonography it is possible to characterize lymph nodes as reactively enlarged, metastases, malignant lymphoma, tuberculosis and to study cervical cy...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s003300101111
更新日期:2002-07-01 00:00:00
abstract::The purpose was to evaluate whether B-flow can improve the ultrasonographic diagnosis of preocclusive stenosis and occlusion of the internal carotid artery (ICA) compared with colour-coded Doppler and power Doppler. Ninety patients with occlusions or preocclusive stenoses of the ICA suspected by Doppler sonography wer...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-006-0285-3
更新日期:2007-02-01 00:00:00
abstract:OBJECTIVE:To compare the diagnostic performance of models based on a combination of contrast-enhanced (CE) magnetic resonance imaging (MRI) with diffusion-weighted imaging (DWI) or time-intensity curves (TIC) in diagnosing malignancies of breast lesions. METHODS:A double-blind retrospective study was conducted in 328 ...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-020-06883-w
更新日期:2020-09-01 00:00:00
abstract::There are no non-invasive methods to assess the real tumor size in rectal cancer prior to surgery, especially following radio/chemotherapy. Magnetic resonance imaging is gaining increasing acceptance as the primary modality at many centers for evaluation of pelvic malignancies including rectal cancers. The aim of this...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-003-1898-4
更新日期:2003-10-01 00:00:00
abstract::The value of 31P-magnetic resonance spectroscopy (MRS) as a possible tool to distinguish viable from non-viable tissue after myocardial infarction was analysed in humans. Fifteen patients 3 weeks after anterior myocardial infarction were studied with breath-hold cine MRI and 3D-CSI MRS (1.5 T system). 31P-spectra were...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s003300000316
更新日期:2000-01-01 00:00:00
abstract:OBJECTIVES:To evaluate whether iterative reconstruction algorithms improve the diagnostic accuracy of coronary CT angiography (CCTA) for detection of lipid-core plaque (LCP) compared to histology. METHODS AND MATERIALS:CCTA and histological data were acquired from three ex vivo hearts. CCTA images were reconstructed u...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-014-3404-6
更新日期:2015-01-01 00:00:00
abstract:OBJECTIVES:To determine the feasibility of MRI texture analysis as a method of quantifying subchondral bone architecture in knee osteoarthritis (OA). METHODS:Asymptomatic subjects aged 20-30 (group 1, n = 10), symptomatic patients aged 40-50 (group 2, n = 10) and patients scheduled for knee replacement aged 55-85 (gro...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-015-4142-0
更新日期:2016-09-01 00:00:00
abstract::The purpose of this study was to describe and characterize the MR imaging findings in a group of patients who underwent surgery for adhesive capsulitis. Twenty-four MR imaging studies in 24 consecutive patients with clinical evidence of adhesive capsulitis were performed prior to arthroscopic capsulotomy. There were 1...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-002-1349-7
更新日期:2002-08-01 00:00:00
abstract::The aim of this study was to evaluate radiation dose and patient discomfort/pain in radial artery access vs femoral artery access in percutaneous coronary intervention (PCI). Dose-area product (DAP) was measured non-randomised for 114 procedures using femoral access and for 55 using radial access. The patients also re...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-004-2322-4
更新日期:2004-09-01 00:00:00
abstract:OBJECTIVE:To assess the value of time-intensity curves obtained after sulphur hefluoride-filled microbubble contrast agent injection to discriminate responders from non-responders among patients with Crohn's disease (CD). METHODS:Forty-three patients (29 male and 14 female; mean age ± SD, 48.5 ± 17.17 years) with init...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-012-2754-1
更新日期:2013-06-01 00:00:00
abstract:PURPOSE:To evaluate quantitative iodine density mapping (IDM) with spectral detector computed tomography (SDCT) as a quantitative biomarker for separation of vertebral trabecular bone metastases (BM) from healthy-appearing trabecular bone (HTB). MATERIALS AND METHODS:IRB-approved retrospective single-center-study of p...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-018-5843-y
更新日期:2019-06-01 00:00:00
abstract::The aim of this study was to evaluate inter- and intra-observer reproducibility when making electronic caliper linear tumor measurements on picture archiving and communications systems (PACS) and compare them with linear measurements obtained from circumferential tracing of tumor perimeter. Three radiologists measured...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-003-2027-0
更新日期:2004-03-01 00:00:00
abstract::The aim of this study was to analyze pulmonary embolism (PE) occurrence and retrospective clinical outcome in patients with clinically suspected acute PE and a negative spiral CT angiography (SCTA) of the pulmonary arteries. Within a 35-month period, 485 consecutive patients with clinical symptoms of acute PE underwen...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-003-2016-3
更新日期:2004-01-01 00:00:00
abstract:OBJECTIVE:To compare pulmonary high-resolution CT (HRCT) findings in patients with Pseudomonas aeruginosa pneumonia to HRCT findings in patients with Cytomegalovirus (CMV) pneumonia. METHODS:We studied 124 patients (77 men, 47 women; age range, 20-89 years; mean age, 65.4 years) with P. aeruginosa pneumonia and 44 pat...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-014-3326-3
更新日期:2014-12-01 00:00:00
abstract:PURPOSE:We sought to determine the relation between major adverse cardiac events (MACE) and anatomical criteria assessed by coronary computed tomography angiography (CCTA) in patients with an anomalous coronary artery with an interarterial course (ACAIAC). MATERIAL AND METHODS:We selected CCTA studies of patients with...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-014-3454-9
更新日期:2015-03-01 00:00:00
abstract::The prevalence of benign focal liver lesions (BFLL) is high both in the general population and in patients with known malignancies. The gray-scale ultrasound (US) technique is usually the first-line imaging modality used in the radiological workup of such lesions, but unfortunately it lacks specificity. Furthermore, D...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-005-2668-2
更新日期:2005-08-01 00:00:00
abstract::The clinical management of patients with skeletal metastases puts new demands on imaging. The radiological imaging in screening for skeletal metastases entails detection, metastatic site description and radiologically guided biopsy for morphological typing and diagnosis. Regarding sensitivity and the ease in performin...
journal_title:European radiology
pub_type: 杂志文章,评审
doi:10.1007/BF00187654
更新日期:1996-01-01 00:00:00
abstract::The purpose of this study was to analyse the radiation exposure of medical staff from interventional x-ray procedures. Partial-body dose measurements were performed with thermoluminescent dosimeters (TLD) in 39 physicians and nine assistants conducting 73 interventional procedures of nine different types in 14 hospita...
journal_title:European radiology
pub_type: 杂志文章,多中心研究
doi:10.1007/s00330-009-1388-4
更新日期:2009-08-01 00:00:00
abstract::Three europium-activated phosphors Y2O2S:Eu, Y2O3:Eu, and YVO4:Eu emitting red light were studied to investigate their suitability for radiographic cassettes or digital imaging systems. Screens were prepared from phosphor powders with various coating thicknesses by sedimentation. To assess phosphor light producing eff...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s003300050387
更新日期:1998-01-01 00:00:00
abstract:OBJECTIVE:To evaluate intra-tumour and striated muscle T1 value heterogeneity and the influence of different methods of T1 estimation on the variability of quantitative perfusion parameters. MATERIAL AND METHODS:Eighty-two patients with a histologically confirmed musculoskeletal tumour were prospectively included in t...
journal_title:European radiology
pub_type: 杂志文章
doi:10.1007/s00330-017-4891-z
更新日期:2017-12-01 00:00:00
abstract::Imaging is the standard method for the evaluation of emergency bile ducts and gallbladder diseases. Imaging may help to treat the patient also. In acute cholecystitis, association of clinical and sonographic data is accurate for the diagnosis, even when the patient is examined by a junior radiologist. Computed tomogra...
journal_title:European radiology
pub_type: 杂志文章,评审
doi:10.1007/s00330-002-1613-x
更新日期:2002-10-01 00:00:00