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Journal of Medical Imaging and Radiation Oncology

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https://www.readbyqxmd.com/read/28266166/prognositc-significance-of-suvmax-on-pretreatment-18-f-fdg-pet-ct-in-early-stage-non-small-cell-lung-cancer-treated-with-stereotactic-body-radiotherapy-a-meta-analysis
#1
Min Dong, Jing Liu, Xiaorong Sun, Ligang Xing
INTRODUCTION: The prognostic importance of the (18) F-FDG PET maximum standardized uptake value (SUVmax ) for early stage non-small cell lung cancer (NSCLC) patients receiving stereotactic body radiotherapy (SBRT) is not well defined. The purpose of this meta-analysis is to evaluate the efficacy of SUVmax on pretreatment (18) F-FDG PET imaging to predict prognosis after SBRT. METHODS: All published English-language studies that assessed the treatment response after SBRT in patients with early-stage NSCLC using (18) F-FDG PET were collected from the EMBASE and MEDLINE databases...
March 7, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28266145/safety-and-efficacy-of-microwave-ablation-for-medically-inoperable-colorectal-pulmonary-metastases-single-centre-experience
#2
Craig D Ferguson, Chris R Luis, Karin Steinke
INTRODUCTION: To evaluate the safety and therapeutic efficacy of percutaneous microwave ablation (MWA) for colorectal pulmonary metastases. METHODS: Retrospective review of CT-guided lung MWA at a single tertiary institution. Adverse events within 30 days of MWA were considered procedure-related complications. Imaging follow-up was with 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET)/CT and contrast-enhanced CT. Response of index tumours was assessed using modified response evaluation criteria in solid tumours (mRECIST)...
March 7, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28256052/a-review-of-implantable-cardioverter-defibrillator-failures-during-radiation-therapy-in-three-sydney-hospitals
#3
Felicity J Hudson, Elaine A Ryan
INTRODUCTION: In recent years, using radiation energies greater than 10 MV in patients with implantable cardioverter defibrillators (ICDs) has been contra-indicated due to the risk of a power on reset (POR) occurring. The ICD is often greater than 30 cm from the treatment field and subject to scatter radiation only. The aim of this study was to use recent patient cases to verify published failure rates and treatment recommendations. METHOD: Five patients with ICDs who experienced a device malfunction during radiation therapy treatments were identified in three Sydney hospitals between 2008 and 2012...
March 3, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28244268/targeted-ultrasound-of-the-liver-impact-on-scanning-time-of-a-new-approach-in-chronic-liver-disease
#4
Nicole Harris, Alexandra Gorelik, Robert N Gibson
INTRODUCTION: Targeted ultrasound of the liver (TUSL) has been proposed as a new approach in chronic liver disease to meet the increasing demands on ultrasound services in this patient population. This study analyses the impact of TUSL on examination time. METHODS: Retrospective cohort analysis of time taken to perform liver ultrasound on consecutive chronic liver disease patients pre- (n = 230) and post- (n = 147) introduction of TUSL. Within each cohort, patients were subdivided into three categories based on the clinical indication: Group 1...
February 27, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28244219/imaging-of-the-temporal-bone-in-children-using-low-dose-320-row-area-detector-computed-tomography
#5
Akihiro Tada, Shuhei Sato, Yoshihisa Masaoka, Susumu Kanazawa
INTRODUCTION: The aim of this study was to compare the image quality obtained using low-dose and standard-dose 320-row temporal bone computed tomography (CT) in paediatric patients. METHODS: Thirteen low-dose CT (120 kV/50 mAs) and nine standard-dose CT (120 kV/100 mAs) images from children up to 5 years of age were compared for their image quality. The noise and signal-to-noise ratio for bone, fat and air were measured. Two observers assessed the overall image quality and ability to visualize 14 small anatomic structures using a 5-point scale, with a score of 3-5 indicating imaging of diagnostic quality...
February 27, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28229525/bilateral-thalamic-lesions-a-pictorial-review
#6
Anıl Özgür, Kaan Esen, Hakan Kaleağası, Arda Yılmaz, Engin Kara, Altan Yıldız
Bithalamic lesions are uncommon, however, both focal and systemic disorders may present bilateral abnormalities in the thalamus in different acute and chronic clinical situations. Neuroimaging, in particular magnetic resonance imaging, plays an essential role in diagnostic approach. Imaging features such as signal alterations, diffusion restriction or contrast enhancement are helpful in characterization of these abnormalities. The location of the lesions may provide key information because some pathologies typically involve a certain part of the thalamus...
February 23, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28217888/computed-tomography-airway-lumen-volumetry-in-patients-with-acromegaly-association-with-growth-hormone-levels-and-lung-function
#7
Gustavo Bittencourt Camilo, Alysson Roncally Silva Carvalho, Alan Ranieri Medeiros Guimarães, Leandro Kasuki, Mônica Roberto Gadelha, Roberto Mogami, Pedro Lopes de Melo, Agnaldo José Lopes
INTRODUCTION: The segmentation and skeletonisation of images via computed tomography (CT) airway lumen volumetry provide a new perspective regarding the incorporation of this technique in medical practice. Our aim was to quantify morphological changes in the large airways of patients with acromegaly through CT and, secondarily, to correlate these findings with hormone levels and pulmonary function testing (PFT) parameters. METHODS: This was a cross-sectional study in which 28 non-smoker patients with acromegaly and 15 control subjects underwent CT analysis of airway lumen volumetry with subsequent image segmentation and skeletonisation...
February 19, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28185419/accumulation-of-rectum-dose-volume-metrics-for-prostate-external-beam-radiotherapy-combined-with-brachytherapy-evaluating-deformably-registered-dose-distribution-addition-using-parameter-based-addition
#8
Calyn R Moulton, Michael J House, Victoria Lye, Colin I Tang, Michele Krawiec, David J Joseph, James W Denham, Martin A Ebert
INTRODUCTION: To investigate the accuracy of deriving dose-volume histogram (DVH) parameters from deformably registered data by comparing values with the simple addition of DVHs from each phase of a combined external beam radiotherapy (EBRT)/high-dose-rate (HDR-BT) brachytherapy prostate treatment. METHODS: Eighty-two patients received EBRT in 23 fractions of 2 Gy and HDR-BT TG43 in three fractions of 6.5 Gy. The HDR-BT CT was deformably registered to the EBRT CT...
February 9, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28185408/full-field-digital-mammography-is-the-apparent-increased-detection-of-microcalcification-leading-to-over-investigation-and-over-diagnosis
#9
Alan J Porter, Elizabeth B Evans, Lisa M Erzetich
INTRODUCTION: Modern full-field digital mammography (FFDM) appears to have increased the detection of breast microcalcification. This retrospective study aimed to assess whether this is associated with over-investigation and possible over-diagnosis of breast pathology of lesser significance. METHODS: Three 2-year periods were studied, in which different mammographic technologies were used exclusively viz., classical screen-film mammography (SFM) in 2003-04, computed radiography (CR) in 2009-10 and FFDM in 2012-13...
February 9, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28168844/radiologists-threatened-by-a-veritable-identity-crisis
#10
Werner A Golder
No abstract text is available yet for this article.
February 7, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28168813/the-impacts-of-mid-treatment-cbct-guided-patient-repositioning-on-target-coverage-during-lung-vmat
#11
Dominique Mathieu, Marie-Pierre Campeau, Stéphane Bedwani, David Roberge, Robert Doucet, Karim Zerouali, Houda Bahig, Toni Vu, Louise Lambert, Laura Masucci, Edith Filion
INTRODUCTION: The purpose of this study is quantify intrafraction motion (IFM) during lung volumetric-modulated arc therapy (VMAT) and evaluate the impact of mid-treatment cone beam computed tomography (CBCT)-guided patient repositioning on target coverage. METHOD: This analysis included lung tumours treated with VMAT to 50-60 Gy in 3-5 fractions. Treatment planning was based on four-dimensional CT scans from which internal tumour volumes (ITV) were derived. An isotropic 5 mm margin was added to obtain the final planning target volume (PTV)...
February 7, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28168806/transcaval-core-biopsy-in-malignant-superior-vena-cava-obstruction-potential-for-single-stage-diagnosis-and-treatment
#12
Julian Maingard, Mark Brooks
Superior vena cava syndrome (SVCS) is secondary to obstruction of venous flow from the superior vena cava to the right atrium. Endovascular stenting is particularly useful when severe or rapidly progressive disease requires urgent treatment. In suspected mediastinal malignancy, transcaval biopsy can be combined with endovenous stenting to provide diagnosis and treatment in a single procedure. Three patients were referred for investigation and treatment of SVCS over a 20 month period. Under fluoroscopic guidance Cook Medical transjugular biopsy sets (with 20-gauge QuickCore biopsy needles) were used and two or three core biopsy samples were obtained...
February 7, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28168804/review-of-axillary-lesions-emphasising-some-distinctive-imaging-and-pathology-findings
#13
REVIEW
Amber Gupta, Cecily Metcalf, Donna Taylor
The axilla is often included on mammography, ultrasound (US), CT and MRI. Axillary masses can arise from any of the tissue components present in this region including breast parenchyma. Aetiologies include: lymphadenopathy due to inflammation, malignancy and degenerative causes; soft tissue tumours such as haemangioma, lymphangioma, peripheral nerve sheath tumours and lipomas; post-surgical complications such as seroma, lymphocoele and haematoma; lesions arising in accessory breast tissue such as fibroadenoma and carcinoma...
February 7, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28168797/pre-oncall-key-conditions-training-for-first-year-radiology-registrars
#14
Nicholas I Brown, Paul Leschke, Mandy Way, David D Smith, Perry Cleland
INTRODUCTION: The Royal Australian and New Zealand College of Radiology (RANZCR) recognised the importance of experience in on-call and emergency radiology for first-year registrars by introducing 'Key conditions in Year 1 training'. This list of common radiological pathologies can help to focus preparations for new registrars as they prepare for after-hours duties. METHODS: The Royal Brisbane and Women's Hospital (RBWH) implemented a 12-week formal training programme, based on this curriculum, for new registrars prior to commencing after-hours work...
February 7, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28156051/ct-of-the-head-for-acute-stroke-diagnostic-performance-of-a-tablet-computer-prior-to-intravenous-thrombolysis
#15
Patrick D McLaughlin, Fiachra Moloney, Siobhan B O'Neill, Karl James, Lee Crush, Oisin Flanagan, Michael M Maher, Gerald Wyse, Noel Fanning
INTRODUCTION: The authors propose that tablet computers could benefit patients with acute stroke in the remote care setting, where time to and accuracy of CT interpretation greatly influences patient outcome. METHODS: One hundred and fifty consecutive patients who presented to the Emergency Department of a tertiary referral neurosciences centre within a time window suitable for intravenous thrombolytic therapy were included. Images were wirelessly transmitted to a tablet computer (iPad 3rd Generation, model = A1430, Apple, Cupertino, CA) and were reviewed by radiologists with three levels of experience for signs of intracranial haemorrhage, large vessel occlusion and parenchymal infarction...
February 3, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28151584/can-a-peri-rectal-hydrogel-spaceoar-programme-for-prostate-cancer-intensity-modulated-radiotherapy-be-successfully-implemented-in-a-regional-setting
#16
Bridget L Te Velde, Justin Westhuyzen, Nader Awad, Maree Wood, Thomas P Shakespeare
INTRODUCTION: The aim of this study was to investigate whether the implementation of a hydrogel spacer (SpaceOAR) programme for patients treated with 81 Gy prostate intensity-modulated radiotherapy (IMRT) in a regional setting can reduce rectal doses and toxicity. METHODS: In this retrospective study, 125 patients with localised prostate cancer treated between April 2014 (programme commencement) and June 2015 were compared: 65 with SpaceOAR (inserted by five different urologists) and 60 patients treated over the same time period without SpaceOAR...
February 2, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28139094/benign-features-of-infection-related-tumor-like-lesions-of-the-lung-a-retrospective-imaging-review-study
#17
Chun-Chao Huang, Sho-Ting Hung, Wei-Chin Chang, Chin-Yin Sheu
INTRODUCTION: Differentiation of benign and malignant pulmonary tumor-like lesions is challenging but increasingly important. We evaluate the most common imaging features in benign lesions based on the frequency of their appearance and compare with corresponding frequencies in malignant tumors from literature. METHODS: Retrospective imaging review study in one center between 1 January 2012 and 30 June 2014. We reviewed the data from 2466 pathological examinations of lung specimens collected from the hospital...
January 31, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28139077/systematic-review-and-meta-analysis-of-the-diagnostic-accuracy-of-low-dose-computed-tomography-of-the-kidneys-ureters-and-bladder-for-urolithiasis
#18
REVIEW
Hao Xiang, Michael Chan, Victoria Brown, Ya Ruth Huo, Lewis Chan, Lloyd Ridley
Renal colic is a common clinical condition which is often investigated with a CT of the kidneys, ureters and bladder (CTKUB). Recent technological improvements have allowed a reduction in dose with the emergence of low-dose CTKUB (LD-CTKUB) techniques. The present meta-analysis aims to determine the diagnostic accuracy of LD-CTKUB in the diagnosis of clinically significant uroliths. A systematic review was performed using nine electronic databases from their dates of inception to May 2016. Inclusion criteria included studies reporting comparative outcomes using LD-CTKUB with a dose less than 3 millisieverts compared to an imaging gold standard or clinical and surgical evaluation...
January 31, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28139076/gamma-knife-radiosurgery-for-brain-metastases-from-gastrointestinal-primary
#19
Brandi R Page, Edina C Wang, Lance White, Emory McTyre, Ann Peiffer, Angela Alistar, Frank Mu, Amritraj Loganathan, John Daniel Bourland, Adrian W Laxton, Stephen B Tatter, Michael D Chan
INTRODUCTION: In this study, we assessed clinical outcomes of patients with brain metastases from a gastrointestinal (GI) primary cancer and patterns of failure after stereotactic radiosurgery including failure within the radiosurgical volume, distant failure and leptomeningeal failure (LMF). We also assessed other factors associated with the patients' neurologic and extraneuraxial disease that may affect clinical outcomes. METHODS: We reviewed our institutional series of 62 consecutive patients with brain metastases treated with stereotactic radiosurgery, which included 17 patients with oesophageal, 44 patients with colorectal and one patient with anal canal primary...
January 31, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28139044/quality-of-referral-what-information-should-be-included-in-a-request-for-diagnostic-imaging-when-a-patient-is-referred-to-a-clinical-radiologist
#20
REVIEW
Alexander G Pitman
Referral to a clinical radiologist is the prime means of communication between the referrer and the radiologist. Current Australian and New Zealand government regulations do not prescribe what clinical information should be included in a referral. This work presents a qualitative compilation of clinical radiologist opinion, relevant professional recommendations, governmental regulatory positions and prior work on diagnostic error to synthesise recommendations on what clinical information should be included in a referral...
January 31, 2017: Journal of Medical Imaging and Radiation Oncology
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