Evaluation of computer-aided detection and dual energy software in detection of peripheral pulmonary embolism on dual-energy pulmonary CT angiography

Purpose  

To evaluate the sensitivity of computer-aided detection(CAD) and dual-energy software(‘Lung PBV’, ‘Lung Vessels’) for detecting peripheral pulmonary embolism(PE).     

Advances in the three-portal technique for anatomical single- or double-bundle ACL reconstruction

Purpose  

To describe the “three-portal technique for anatomical ACL single- or double-bundle reconstruction” and the arthroscopic viewing improvement provided by this technique.     

CT-guided cervical nerve root injections: comparing the immediate post-injection anesthetic-related effects of the transforaminal injection with a new indirect technique

Objective  

To describe an “indirect” cervical nerve root injection technique with a dorsal approach that should carry less inherent risk than the “direct” cervical transforaminal injection approach, and to compare the immediate post-injection results of the two procedures.     

A novel fenestration technique for abdominal aortic dissection membranes using a combination of a needle re-entry catheter and the "cheese-wire" technique

Purpose  

This study was designed to demonstrate the applicability of a combined needle-based re-entry catheter and “cheese-wire” technique for fenestration of abdominal aortic dissection membranes.     

Step and shoot coronary CT angiography using 256-slice CT: effect of heart rate and heart rate variability on image quality

Objective  

To evaluate the effect of heart rate variability (HRV) and heart rate (HR) on intra-image “motion” and inter-image “stairstep” artefacts in step-and-shoot coronary CT angiography (CCTA) using a wide detector CT scanner.     

Comparison of T2-weighted and contrast-enhanced T1-weighted MR imaging at 1.5?T for assessing the local extent of cervical carcinoma

Objective  

To compare two MR sequences at 1.5 T—T2-weighted and contrast-enhanced T1-weighted images—by using macroscopic sections to determine which image type enables the most accurate assessment of cervical carcinoma.     

Are contrast media required for (68)Ga-DOTATOC PET/CT in patients with neuroendocrine tumours of the abdomen?

Objectives  

To determine the value of intravenous contrast medium in (68)Ga-DOTA-Phe(1)-Tyr(3)-octreotide – (68)Ga-DOTATOC – PET/CT for the detection of abdominal neuroendocrine tumours (NET).     

Signal intensity in T2’ magnetic resonance imaging is related to brain glioma grade

Objectives  

T2’ values reflect the presence of deoxyhaemoglobin related to high local oxygen extraction. We assessed the feasibility of T2’ imaging to display regions with high metabolic activity in brain gliomas.     

Left ventricular dyssynchrony in patients with end-stage liver disease

Background  

Limited published data suggested that patients with end-stage liver disease (ESLD) might have “cirrhotic cardiomyopathy,” which could have an earlier stage manifested by mechanical dyssynchrony before left ventricular (LV) dysfunction.     

Pipeline embolization device (PED) for neurovascular reconstruction: initial experience in the treatment of 101 intracranial aneurysms and dissections

Introduction  

The purpose of this study was to evaluate the safety and efficacy of the recently available flow diverter “pipeline embolization device” (PED) for the treatment of intracranial aneurysms and dissections.     

Myocardial imaging with <Superscript>99m</Superscript>Tc-Tetrofosmin: Influence of post-stress acquisition time,regional radiotracer uptake,and wall motion abnormalities on the clinical result

Background  

We previously demonstrated that early (15′, T1) post-stress myocardial imaging with Tetrofosmin could be more accurate than standard acquisitions (45′, T2) in identifying coronary artery disease.     

Assessment of α7 nicotinic acetylcholine receptor availability in juvenile pig brain with [<Superscript>18</Superscript>F]NS10743

Purpose  

To conduct a quantitative PET assessment of the specific binding sites in the brain of juvenile pigs for [¹⁸F]NS10743, a novel diazabicyclononane derivative targeting α7 nicotinic acetylcholine receptors (α7 nAChRs).     

Carotid Artery Stenosis at MSCT: Is there a Threshold in Millimeters that Determines Clinical Significance?

Purpose  

The purpose of this work was to determine whether it is possible to identify a reliable carotid stenosis threshold—measured in millimeters (mm)—that is associated with cerebrovascular symptoms.     

Biodistribution and dosimetry of <Superscript>123</Superscript>I-<Emphasis Type="Italic">m</Emphasis>ZIENT: a novel ligand for imaging serotonin transporters

Purpose  

¹²³I-labelled mZIENT (2β-carbomethoxy-3β-(3′-((Z)-2-iodoethenyl)phenyl)nortropane) has been developed as a radioligand for the serotonin transporter. The aim of this preliminary study was to assess its whole-body biodistribution in humans and estimate dosimetry.     

Radiologists’ responses to inadequate referrals

Objectives  

To investigate radiologists’ responses to inadequate imaging referrals.     

Systematic review: Bias in imaging studies - the effect of manipulating clinical context,recall bias and reporting intensity

Objectives  

To perform a systematic review of diagnostic test accuracy studies which manipulate or investigate the context of interpretation. In particular, those which modify or conceal sample characteristics (e.g. disease prevalence or reporting intensity) or research setting (“laboratory” versus “field”). We also investigated recall bias.     

PET imaging of α<Subscript>v</Subscript>β<Subscript>3</Subscript> integrin expression in tumours with <Superscript>68</Superscript>Ga-labelled mono-, di- and tetrameric RGD peptides

Purpose  

Due to the restricted expression of α_vβ₃ in tumours, α_vβ₃ is considered a suitable receptor for tumour targeting. In this study the α_vβ₃-binding characteristics of ⁶⁸Ga-labelled monomeric, dimeric and tetrameric RGD peptides were determined and compared with their ¹¹¹In-labelled counterparts.     

Longitudinal assessment of bone marrow edema-like lesions and cartilage degeneration in osteoarthritis using 3 T MR T1rho quantification

Objective  

To quantitatively assess the relationship between bone marrow edema-like lesions (BMELs) and the associated cartilage in knee osteoarthritis (OA) using T_1ρ quantification at 3 T MRI.     

Intracranial aneurysm coiling with PGLA-coated coils versus bare platinum coils: long-term anatomic follow-up

Introduction  

The purpose of this study is to compare the long-term (≥12 months) angiographic follow-up of aneurysms treated with polymer polyglycolic-lactic acid (PGLA)-coated coils versus bare platinum coils.     

Carotid Stenting for Restenosis after Endarterectomy

Introduction  

Restenosis after carotid endarterectomy (CEA) has been described in 8–19% of patients, 14–23% of whom become symptomatic. This study analyzes our experience with carotid artery stenting (CAS) for post-CEA recurrent stenoses.