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Journal of Medical Imaging and Radiation Oncology

Rohan Nair, Vanessa Panettieri, Joe H Chang, Michael Dally
INTRODUCTION: This study was performed to assess the relationship between tumour response and radiation dose in equivalent 2 Gy per fraction (EQD2). METHOD: A retrospective cohort analysis of 21 patients with a diagnosis of intracranial haemangiopericytoma between 2000 and 2013 was included in this study. A total of 39 lesions were analysed. The equivalent dose in 2 Gy per fraction was calculated by assigning an alpha-beta ratio of 12 Gy. A paired t-test compared dose (EQD2) and tumour response, and as the outcome was binary, a logistic regression analysis was performed...
May 19, 2018: Journal of Medical Imaging and Radiation Oncology
John Massie, Michael Kean, Tim Cain
Meat pies have been adopted as one of Australia's favourite foods, and considered an icon by many. The hand-held convenience of the pie has made them a culinary necessity while watching sport, also beloved in Australia. An enduring question about the meat pie is what exactly is inside. This can be difficult to ascertain by digital, ocular or oral exploration. In this study we use MR imaging to study the contents of some of Australia's best loved pies.
May 14, 2018: Journal of Medical Imaging and Radiation Oncology
Mauricio E Diaz, Maciej Debowski, Craig Hukins, David Fielding, Kwun M Fong, Catherine S Bettington
INTRODUCTION: Several clinical guidelines indicate that brain metastasis screening (BMS) should be guided by disease stage in non-small cell lung cancer (NSCLC). We estimate that screening is performed more broadly in practice, and patients undergo brain imaging at considerable cost with questionable benefit. Our aim was to quantify the use and detection rate of BMS in a contemporary cohort staged with 18 F-fluorodeoxyglucose positron emission tomography/computed tomography (PET-CT). METHODS: We conducted a retrospective review of prospectively collected data from three major lung cancer referral centres in Brisbane between January 2011 and December 2015...
May 10, 2018: Journal of Medical Imaging and Radiation Oncology
Michael Poulsen, Anne A Poulsen
Radiation oncology trainees in Australia and New Zealand have relatively high levels of emotional exhaustion and depersonalisation which are core components of burnout. The stresses of a demanding clinical load, studying for exams as well as family commitments are all contributing factors. Self-Deter mination Theory (SDT) provides a framework for optimising motivation which may be intrinsic or extrinsic. The three core components of SDT are competence, relatedness and autonomy. These factors should be addressed at a college level, Institutional and a personal level if the best outcomes are to be achieved...
May 2, 2018: Journal of Medical Imaging and Radiation Oncology
Shiro Miyayama, Masashi Yamashiro, Keiichi Nagai, Natsuki Sugimori, Koji Iwata, Naoko Sakuragawa
We report the usefulness of dual-phase cone-beam computed tomography during angiography (CBCTA) and automated tumour-feeder detection software (AFD) in transarterial embolization (TAE) for three consecutive cases of obscure arterial bleeding in the abdomen. Two patients presented with lower gastrointestinal bleeding and one showed bleeding into the pancreatic pseudocyst. Superior mesenteric or common hepatic angiography did not demonstrate extravasation, but dual-phase CBCTA and AFD could identify extravasation and an access route to the bleeding point...
May 2, 2018: Journal of Medical Imaging and Radiation Oncology
Arani Halder, Jennifer Sommerville, Mitesh Gandhi
Lymphoepithelial carcinoma (LEC) is a rare malignancy of the salivary gland arising from the parotid in 80% of cases. LEC is indistinguishable histologically from more common non-keratinising undifferentiated nasopharyngeal carcinoma (NPC). Up to 40% of patients with primary LEC present with a cervical metastasis and histological assessment of the primary lesion or nodal metastasis may be reported as NPC. The absence of a nasopharyngeal lesion on imaging and endoscopic assessment together with a parotid mass strengthens the case for a LEC...
April 20, 2018: Journal of Medical Imaging and Radiation Oncology
Miguel Bardon, Julian Hanson, Bill O'Brien, Adil Naeem
INTRODUCTION: Calcified cerebral emboli are an increasingly recognized cause of ischaemic stroke, although recognition amongst general radiologists and clinicians can be limited. Recent literature suggests that calcified cerebral emboli are likely more common than originally thought. This study aims to define the prevalence of calcified cerebral emboli as the most likely aetiology within a cohort of confirmed cases of acute stroke, as well as compare and contrast these cases with cases of 'incidental' intracranial calcification...
April 17, 2018: Journal of Medical Imaging and Radiation Oncology
Fiachra Moloney, Maria Twomey, Daniel Fama, Joy Y Balta, Karl James, Richard G Kavanagh, Niamh Moore, Mary Jane Murphy, Siobhan M O'Mahony, Michael M Maher, John F Cryan, Owen J O'Connor
INTRODUCTION: Cadaveric studies provide a means of safely assessing new technologies and optimizing scanning prior to clinical validation. Reducing radiation exposure in a clinical setting can entail incremental dose reductions to avoid missing important clinical findings. The use of cadavers allows assessment of the impact of more substantial dose reductions on image quality. Our aim was to identify a suitable low-dose abdominopelvic CT protocol for subsequent clinical validation. METHODS: Five human cadavers were scanned at one conventional dose and three low-dose settings...
April 15, 2018: Journal of Medical Imaging and Radiation Oncology
Phelipe Cunha-Bezerra, Ricardo Vieira, Fernando Amaral, Henrique Cartaxo, Túlio Lima, Ulisses Montarroyos, Francisco Bandeira
INTRODUCTION: The multi-phase or four-dimensional computed tomography (4D CT) has emerged as a promising technique for preoperative localization of parathyroid lesions in patients with primary hyperparathyroidism (PHPT), but little is known about its accuracy in patients with normocalcemic primary hyperparathyroidism (NPHPT). METHODS: A total of 18 patients diagnosed with PHPT underwent three methods of preoperative localization (4D CT, TC-99-Sestamibi scintigraphy and ultrasonography)...
April 15, 2018: Journal of Medical Imaging and Radiation Oncology
Zeyad Al-Ogaili, Anita J Reed, John Burrage
INTRODUCTION: The reduced (attenuated) number of photons passing through the arm can result in a combination of fine and thick streak artefacts, particularly with the use of thin CT slices and lower radiation dose parameters. This phenomenon is known as photon starvation. We noted an abnormal appearance of the humerus when imaged with certain arm position. This appearance was thought to be artefact due to photon starvation. METHODS: A human radius bone was imaged in different positions and the kV and mA were varied in an attempt to reproduce the artefact, which would support the hypothesis that the artefact may be caused by bone attenuation...
April 14, 2018: Journal of Medical Imaging and Radiation Oncology
Kamonwon Cattapan, Wiwatana Tanomkiat, Sarayut L Geater, Nantaka Kiranantawat
INTRODUCTION: Pleural procedures are performed to prove the diagnosis of pleural effusion. This study was to assess the incidence and outcome of pleural procedure-related tumour seeding in lung cancer with malignant pleural effusion, and to review the characteristics of the implanted tumours on computed tomography (CT) images. METHODS: From January 2008 to December 2010, 165 patients with the diagnosis of lung cancer with malignant pleural effusion, who underwent at least one pleural procedure and had follow-up CT, were included...
April 6, 2018: Journal of Medical Imaging and Radiation Oncology
Rohit Sharma, Stephanie Dearaugo, Bernard Infeld, Richard O'Sullivan, Richard P Gerraty
Cerebral amyloid angiopathy (CAA) is an important cause of lobar intracerebral haemorrhage (ICH) in the elderly, but has other clinico-radiological manifestations. In the last two decades, certain magnetic resonance imaging (MRI) sequences, namely gradient-recalled echo imaging and the newer and more sensitive susceptibility-weighted imaging, have been utilised to detect susceptibility-sensitive lesions such as cerebral microbleeds and cortical superficial siderosis. These can be utilised sensitively and specifically by the Modified Boston Criteria to make a diagnosis of CAA without the need for 'gold-standard' histopathology from biopsy...
March 31, 2018: Journal of Medical Imaging and Radiation Oncology
Jeremy D Croker, Sean A Bydder
INTRODUCTION: The aim of this study was to determine the publication rate of abstracts presented at annual Royal Australian and New Zealand College of Radiologists (RANZCR) conferences. METHODS: The College's Annual Scientific Meetings (ASMs) from 2010 to 2013 were examined, with the goal of comparing these results to the findings of an earlier identical study that examined RANZCR ASMs from 1996 to 1999. RESULTS: Of the 1152 research abstracts presented, 468 (41%) had been published as full articles...
March 30, 2018: Journal of Medical Imaging and Radiation Oncology
John J Fitzpatrick, Miriam A Ryan, John F Bruzzi
The use of Positron emission tomography/computerised tomography (PET/CT) is well established in the staging and assessment of treatment response of lymphoma. Recent studies have suggested that whole body diffusion-weighted imaging -magnetic resonance imaging (WB-DW-MRI) may be an alternative to PET/CT in both staging and assessment of treatment response. A systematic review was performed to assess the ability of DW-MRI in the assessment of treatment response in lymphoma. Pubmed, Medline, Web of Science and Embase databases were queried for studies examining whole body DW-MRI compared to PET/CT in adult patients using a protocol of search terms...
March 25, 2018: Journal of Medical Imaging and Radiation Oncology
Vicky Chin, Michael Fulham, Mark Hertzberg, Michael Jackson, Robert Lindeman, Timothy Brighton, Giselle Kidson-Gerber, Eva A Wegner, Carol Cheung, Susan MacCallum, Janet Williams, Stephen R Thompson
INTRODUCTION: To compare outcomes of different salvage treatment modalities in patients with aggressive B-cell non-Hodgkin lymphoma (NHL) who remain FDG-PET positive after R-CHOP chemotherapy. Existing data on these patients with FDG-PET primary refractory disease are limited. METHODS: Patients with diffuse large B-cell lymphoma or grade 3 follicular lymphoma were retrospectively reviewed from the Prince of Wales Hospital databases. Eligibility criteria were: age≥18 years, treated with R-CHOP, with positive post-chemotherapy FDG-PET...
March 25, 2018: Journal of Medical Imaging and Radiation Oncology
Richard Thomas, Michael H Rosenthal, Maaz Ghouri, Michael L Steigner
We describe an infundibulum of a common origin of the fourth lumbar arteries and the median sacral artery. To the best of our knowledge there has been no such published case thus far and its natural course is unknown, in view of its novelty. Infundibular dilatations in intracranial arteries have been described to progress in size and potentially rupture. Therefore, we recommended follow-up imaging, as part of the management, to ensure stability of the infundibulum.
March 24, 2018: Journal of Medical Imaging and Radiation Oncology
Salem Billan, Veronique Bakouche, Egor Borzov, Ziv Gil, Roxolyana Abdah-Bortnyak
INTRODUCTION: While the optimal target volumes for primary nasopharyngeal tumour are still subject to debate, we evaluated primary tumour volumes in nasopharyngeal carcinoma (NPC) patients treated according to an institutional protocol with a reduced volume approach and compared them to those determined by Radiation Therapy Oncology Group (RTOG)-0615 guidelines. METHODS: This single-centre retrospective analysis included 36 NPC patients treated between 2/2007 and 3/2014...
March 23, 2018: Journal of Medical Imaging and Radiation Oncology
Paul Edmund Smith, Ian Thuan Hien Luong, Andrew Hans van der Vliet
Percutaneous nephrostomy insertion has, in recent times, become a subspecialised skill performed by an interventional trained Radiologist. However, this creates access issues, particularly in remote and regional medical centres. In this article, we describe a simple and effective method for computed tomography (CT)-guided percutaneous nephrostomy insertion, utilising the CT interventional skills of the general radiologist.
March 12, 2018: Journal of Medical Imaging and Radiation Oncology
Dakshika A Gunaratne, Michael J Veness
Radiation oncologists are increasingly tasked with the management of elderly patients with non-melanoma skin cancer, unsuitable for surgical intervention due to inoperable lesions and/or poor performance status. In this cohort, hypofractionated radiotherapy, delivered either daily, alternative daily or once weekly is highly effective. A systematic literature search was conducted of PUBMED, MEDLINE and EMBASE databases using the algorithm ('radiotherapy' OR 'radiation therapy' OR 'brachytherapy') AND ('hypofraction' OR 'hypofractionated' OR 'hypofractionation') AND ('skin neoplasms' OR 'carcinoma' OR 'malignancy') AND ('skin' OR 'epidermis' OR 'epidermal' OR 'cutaneous')...
March 9, 2018: Journal of Medical Imaging and Radiation Oncology
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April 2018: Journal of Medical Imaging and Radiation Oncology
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