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Clinical Radiology

Y Shi, H Yang, Z Feng, F Chen, H Zhang, Z Wu
AIM: To prospectively evaluate the epidemiological, anatomical classification, clinical importance, and radiological features of posterior nutcracker phenomenon (PNP) in patients examined with multisection spiral computed tomography (MSCT). MATERIAL AND METHODS: Patients who underwent abdominal enhanced MSCT from January 2012 to July 2016 were evaluated retrospectively. Combined with the blood, normal biochemistry, and urine tests, patients were assessed retrospectively for renal vein diameter measurements, the compression ratio of blood vessels, gender differences, anatomical classification, percentage of proteinuria and haematuria, and clinical symptoms...
September 14, 2018: Clinical Radiology
L Xiao, Q Liu, W Zhao, H Pang, Q Zeng, Y Chen, J Zhao, Q Mei, X He
AIM: To evaluate the efficacy and to identify prognostic factors of polyvinyl alcohol (PVA) chemoembolisation for treating advanced hepatocellular carcinoma (HCC) with portal vein (PV) tumour thrombosis (PVTT) and arterioportal shunts. MATERIALS AND METHODS: The clinical data of 145 advanced HCC patients with PVTT and arterioportal shunts were collected. The patients were divided into two groups: group A, with main PV invasion, (n=56) and group B, with PV branch invasion, (n=89)...
September 14, 2018: Clinical Radiology
C G Borrero, M Bertolet, J Costello, D Vyas
AIM: To determine whether magnetic resonance imaging (MRI) signs of subscapularis (SBT), supraspinatus (SST), or superior labral tearing predict long head of biceps (LHB) tendon tearing at arthroscopy. MATERIALS AND METHODS: Subjects with MRI studies followed by arthroscopy were collected. Radiologists graded rotator cuff (RC) tendons and the superior labrum using three grade classifications and blinded to arthroscopy. Correlation between imaging variables and surgical outcome was expressed in terms of odds ratios and determined using a stepwise logistic regression model...
September 14, 2018: Clinical Radiology
A Nanapragasam, P Bhatnagar, D Birchall
AIM: To assess and quantify the relationship between trainee reporting and radiology errors. MATERIALS AND METHODS: A retrospective analysis of the 100 most recent cases reviewed by a discrepancy forum in a tertiary neuroradiology service was performed. Data on the time of the scan and the presence of a trainee report were collected, with comparison being made between the cohort of erroneous reports and the overall service. RESULTS: Although out-of-hours imaging only constituted 18% of the overall service, 36% of erroneous reports originated from scans performed out-of-hours...
September 13, 2018: Clinical Radiology
J C Durack, K T Brown, G Avignon, L A Brody, C T Sofocleous, J P Erinjeri, S B Solomon
AIM: To evaluate arterial cone-beam computed tomography (A-CBCT) automated analysis software for identification of vessels supplying tumours during transarterial hepatic embolisation (TAE). MATERIALS AND METHODS: This study was approved by the institutional review board, with waiver of consent. Consecutive TAE procedures using arterial mapping software (AMS), and performed between February 2014 and August 2014, were reviewed. Hepatic arteries were imaged using digital subtraction angiography (DSA) as well as A-CBCT processed with AMS...
September 13, 2018: Clinical Radiology
J Murphy, A Patel, S L James, R Botchu, A M Davies
AIM: To evaluate the frequency of the "flow-void" sign in a large series of pathologically proven renal cell carcinoma (RCC) bone metastases referred to a specialist unit and to evaluate its correlation with both lesion size and imaging sequence. A further aim was to describe a proposed grading system for the description of the "flow-void" sign. MATERIALS AND METHODS: A retrospective review of patients with magnetic resonance imaging (MRI) of pathologically proven RCC bone metastases between September 2007 and December 2017 was performed...
September 13, 2018: Clinical Radiology
R Dessouky, N Heineman, L Zhang, J Hummel, J Skweres, D Wukich, A Chhabra
AIM: To assess inter-reader reliability of metatarsus adductus (MA) using the traditional method and Engel's angle (EA) on radiography and magnetic resonance imaging (MRI) and assess correlations with hallux valgus (HV). METHODS AND MATERIALS: Ninety consecutive patients with radiographs and MRI of the foot were included. Two readers measured HV angle (HVA), traditional metatarsus adductus angle (MAA), and EA on radiographs and HVA and EA on MRI. Three- and two-way mixed model analyses were used for reader agreements...
September 11, 2018: Clinical Radiology
T C H Hui, T K Chuah, H M Low, C H Tan
AIM: To investigate the feasibility of using texture analysis in preoperative magnetic resonance imaging (MRI) to predict early recurrence (ER) in hepatocellular carcinoma (HCC) post-curative surgery. MATERIAL AND METHODS: Institutional review board was obtained. A retrospective review of all patients who underwent hepatectomy between 1 January 2007 and 31 December 2015 was performed. Inclusion criteria included preoperative MRI, tumour size ≥1 cm, new cases of HCC...
September 10, 2018: Clinical Radiology
J Saini, P Kumar Gupta, A Awasthi, C M Pandey, A Singh, R Patir, S Ahlawat, N Sadashiva, A Mahadevan, R Kumar Gupta
AIM: To compare the diagnostic performance of T1 perfusion magnetic resonance imaging (MRI), diffusion-weighted imaging (DWI), and susceptibility-weighted imaging (SWI) for differentiating primary central nervous system lymphoma (PCNSL) and glioblastoma (GBM). MATERIALS AND METHODS: This retrospective study comprised a cohort of 70 patients with glioblastoma and 30 patients with PCNSL. T1 perfusion MRI-derived rCBV_corr (leakage corrected relative cerebral blood volume), apparent diffusion coefficient (ADC) derived from DWI, and intratumoural susceptibility signals intensity (ITSS) measured on SWI were evaluated in these 100 patients...
September 6, 2018: Clinical Radiology
W-L Qian, D-J Zhou, Y Jiang, C Feng, Q Chen, H Wang, J-B Zhang, J-M Xu
AIM: To investigate the image quality of lower-extremity computed tomography (CT) angiography (CTA) with ultra-low radiation dose using the iterative model reconstruction (IMR) algorithm. MATERIALS AND METHODS: Lower-extremity CTA was acquired using a 256-multidetector CT system from 90 patients assigned into three groups: (1) the routine dose (RD) group: 120 kVp, automatic tube current modulation (ACTM) with an image quality index of 12, and filtered back projection (FBP); (2) the low-dose (LD) group: 80 kVp, ACTM with an image quality index of 1, and IMR; and (3) the ultra-low dose (ULD) group: 80 kVp, 20 mAs, and IMR...
September 5, 2018: Clinical Radiology
T Shuai, L Deng, Y Pan, W Li, K Liao, J Li, L Peng, Z Li
AIM: To investigate the superiority of free-breathing coronary computed tomography angiography (CCTA) with 16-cm wide-detector CT for challenging patients who cannot hold their breath. MATEIALS AND METHODS: A total of 76 patients (62% with either heart rate >75 beats/min or arrhythmia) who were unable to breath-hold underwent both free-breathing CCTA and invasive coronary angiography (ICA) were included. Two reviewers evaluated coronary arteries on a per-segment, per-vessel, and per-patient basis for image quality using a four-point scale and stenosis degree...
September 5, 2018: Clinical Radiology
J Ran, S Ji, J N Morelli, G Wu, X Li
AIM: To explore the T2-mapping signal characteristics of the thigh muscles in patients with dermatomyositis/polymyositis (DM/PM) and to investigate the correlation between thigh muscle T2 values, clinical parameters, and serum creatinine kinase (CK). MATERIALS AND METHODS: Forty-two patients with DM/PM proven by diagnostic criteria were enrolled in the study along with 13 healthy control subjects. Both T2-mapping and conventional magnetic resonance imaging (MRI) images were obtained in the thigh musculature of all subjects...
August 29, 2018: Clinical Radiology
M Charnock, N Kotnis, M Fernando, V Wilkinson
AIMS: To assess the efficacy of ultrasound as a screening tool in the assessment of soft-tissue masses referred from primary care and to investigate the incidence of malignancy in this population. MATERIALS AND METHODS: Retrospective analysis was performed on patients who underwent ultrasound for a suspected soft-tissue mass at our centre between January 2011 and December 2012. Patient demographics, ultrasound findings, further imaging investigations and histopathology were recorded...
August 27, 2018: Clinical Radiology
X Sun, J Xu, J Zhang, Y Jin, Q Chen
AIM: To evaluate the safety and efficacy of arterial embolisation for rectal bleeding due to internal haemorrhoids. MATERIALS AND METHODS: Twenty-three patients received arterial embolisation for rectal bleeding due to internal haemorrhoids. Clinical records, technical success, and complications were analysed retrospectively. RESULTS: Good short-term outcomes were achieved with no ischaemia or pain. Regarding symptom resolution, such as irritation, discomfort, and bloody discharge, satisfaction was observed in 6/6 (100%) patients with grade II haemorrhoids and 14/17 (82...
August 24, 2018: Clinical Radiology
D J Bowden, C A Byrne, A Alkhayat, E C Kavanagh, S J Eustace
AIM: To compare magnetic resonance imaging (MRI) appearances of symptomatic proximal hamstring tendinopathy (PHT) in younger (<45 years) and older (>45 years) patients. MATERIALS AND METHODS: MRI of patients with symptomatic PHT were reviewed and compared to asymptomatic age- and sex-matched controls. Appearances recorded were as: type 0, normal tendon; type I, intra-substance signal abnormality; type II, ischial bone and soft-tissue oedema with/without type I findings; type III, curvilinear fluid signal tearing with/without type II findings; type IV, bony avulsion...
August 23, 2018: Clinical Radiology
Z Bayramoglu, S G Kandemirli, E Caliskan, R Yilmaz, A D Kardelen, S Poyrazoglu, F Bas, I Adaletli, F Darendeliler
AIM: To evaluate the role of superb microvascular imaging along with greyscale and Doppler imaging for thyroid gland evaluation in Hashimoto's thyroiditis (HT) versus control subjects. MATERIALS AND METHODS: The study included 33 healthy volunteers with normal ultrasound and laboratory findings and 70 patients with HT based on laboratory and sonographic findings who were undergoing follow-up and receiving medical treatment. HT patients were classified based on the modification of the scheme proposed by Sostre and Reyes that incorporates the extent of hypoechoic foci or patchy infiltration as grade A (foci involving <50% of the gland) and B (foci involving >50% of the gland)...
August 20, 2018: Clinical Radiology
O Carney, A Falzon, A D MacKinnon
Diffusion-weighted imaging (DWI) is a well-established technique in neuroimaging, but the diagnostic value of DWI outside the setting of acute infarct and abscess is sometimes under-recognised particularly in paediatric neuroimaging. DWI also plays an important role in the evaluation of intracranial infection, brain tumours, demyelinating diseases, and metabolic disorders. DWI can assist in the early detection and characterisation of intraocular and skull-base pathology. The cases presented in this article demonstrate the utility of DWI in paediatric neuroimaging...
August 16, 2018: Clinical Radiology
R Assadsangabi, S Mohan, S A Nabavizadeh
AIM: To determine clinical manifestations, imaging findings and outcome of patients with thrombosed developmental venous anomalies (DVAs). MATERIALS AND METHODS: The radiology database was searched retrospectively for thrombosed DVAs between 01/01/2000 to 07/01/2016. Demographic variables, associated risk factors, clinical manifestations, imaging findings, treatments, and follow-up were recorded. RESULTS: Six patients were found (four female and two male; age range 16-45 years with mean age, 21...
August 13, 2018: Clinical Radiology
Y Jia, X Xiao, Q Sun, H Jiang
AIM: To evaluate lung cancer histology type using computed tomography (CT) spectral quantitative parameters combining with serum tumour markers. MATERIALS AND METHODS: Patients with suspicious lung cancer underwent CT spectral imaging and serum tumour markers. CT spectral quantitative parameters including attenuation value, the slope of spectral curve (λ), iodine concentration, water concentration, and effective atomic number (Zeff) were acquired. Serum levels of tumour markers including carcinoembryonic antigen (CEA), neuron-specific enolase (NSE), squamous cell carcinoma antigen (SCC-Ag), and cytokeratin fragment CYFRA21-1 were also obtained...
August 13, 2018: Clinical Radiology
Y Ma, Y Hou, A Qiao, Q Jing, H Liu, Q Yang, Q Guo, B Yang
AIM: To determine the diagnostic performance of instantaneous wave-free ratio (iFR) derived from non-invasive coronary computed tomography angiography (CTA; iFRCT ) for ischaemia-causing coronary stenosis, and to compare the diagnostic efficacy of iFRCT , CTA, and CTA plus iFRCT . METHODS AND MATERIALS: Thirty-nine patients (55 vessels) with known or suspected coronary artery disease were included. All patients underwent invasive coronary angiography and fractional flow reserve (FFR) according to CTA findings and clinical indicators...
August 6, 2018: Clinical Radiology
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