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Journal of Medical Imaging and Radiation Oncology

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https://www.readbyqxmd.com/read/28229525/bilateral-thalamic-lesions-a-pictorial-review
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
https://www.readbyqxmd.com/read/28116853/utility-of-68-ga-prostate-specific-membrane-antigen-positron-emission-tomography-in-diagnosis-and-response-assessment-of-recurrent-renal-cell-carcinoma
#16
Shankar Siva, Jason Callahan, David Pryor, Jarad Martin, Nathan Lawrentschuk, Michael S Hofman
INTRODUCTION: Prostate specific membrane antigen (PSMA) positron emission tomography (PET) is an emerging imaging modality in prostate cancer. However, (68) Ga-PSMA-PET may also have diagnostic utility in the setting of renal cell carcinoma (RCC). We investigate the differential role of (18) F-fluorodeoxyglucose (FDG) and PSMA-PET/CT scanning in patients with oligometastatic RCC. In particular, we focus on the utility of PSMA-PET for diagnostic evaluation of isolated or limited metastases planned for local surgery or radiation, as well as the potential utility of PSMA-PET for therapeutic response assessment in patients receiving stereotactic ablative body radiotherapy (SABR)...
January 24, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28116813/efficacy-of-flattening-filter-free-beam-in-stereotactic-body-radiation-therapy-planning-and-treatment-a-systematic-review-with-meta-analysis
#17
REVIEW
Thu M Dang, Mitchell J Peters, Brigid Hickey, Adam Semciw
A linear accelerator with the flattening-filter removed generates a non-uniform dose profile beam. We aimed to analyse and compare plan quality and treatment time between flattened beam (FB) and flattening-filter-free (FFF) beam to assess the efficacy of FFF beam for stereotactic body radiation therapy (SBRT). The search strategy was based around 3 concepts; radiation therapy, flattening-filter-free and treatment delivery. The years searched were restricted from 2010 to date of review (October 2015). All plan quality comparisons were between FFF and FB plans from the same data sets...
January 24, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28105788/retrospective-analysis-of-computed-tomographic-colonography-in-a-rural-hospital
#18
Beom Jun Lee, Adrian Balasingam, Rene Van den Bosch
INTRODUCTION: The aims of this study were to investigate the diagnostic performance of computed tomography colonography (CTC) performed in a rural secondary hospital, and to describe the local pattern of CTC service provision. METHOD: A single site, retrospective observational analysis was conducted for all patients undergoing CTC during the 12-month period from 1st of January to 31st of December 2014 with comparison to available colonoscopy. RESULTS: There were 639 CTCs performed during the 12-months period...
January 20, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28102003/intervention-quality-is-not-routinely-assessed-in-cochrane-systematic-reviews-of-radiation-therapy-interventions
#19
Mohamad R Abdul Rahim, Melissa L James, Brigid E Hickey
INTRODUCTION: The aim of this study was to maximise the benefits from clinical trials involving technological interventions such as radiation therapy. High compliance to the quality assurance protocols is crucial. We assessed whether the quality of radiation therapy intervention was evaluated in Cochrane systematic reviews. METHODS: We searched 416 published Cochrane systematic reviews and identified 67 Cochrane systematic reviews that investigated radiation therapy or radiotherapy as an intervention...
January 19, 2017: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/28070962/transjugular-intrahepatic-portosystemic-shunt-indications-complications-survival-and-its-use-as-a-bridging-therapy-to-liver-transplant-in-western-australia
#20
Puraskar Pateria, Gary P Jeffrey, George Garas, Jonathan Tibballs, John Ferguson, Luc Delriviere, Yi Huang, Leon A Adams, Gerry MacQuillan
INTRODUCTION: Insertion of transjugular intrahepatic portosystemic shunt (TIPS) is an established therapeutic option to treat the complications of portal hypertension. The purpose of this study is to review the experience of a single Australian institute with TIPS and evaluation of result to emphasize the indication, aetiology of portal hypertension, prognostic factors, complications and survival. Use of TIPS as a bridge to liver transplantation was also analysed. METHOD: A retrospective cohort study of patients treated with TIPS at The Western Australian Liver Transplant Unit, Sir Charles Gairdner Hospital, over a period of 12 years...
January 9, 2017: Journal of Medical Imaging and Radiation Oncology
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