Journal of Medical Imaging and Radiation Oncology

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Computed tomography overexposure as a consequence of extended scan length
Journal of Medical Imaging and Radiation Oncology - Tập 59 Số 5 - Trang 586-589 - 2015
Mohamed Khaldoun Badawy, Michael Galea, Kam Mong, Udo Paul
AbstractIntroductionThis study aimed to raise awareness around the increased effective dose as scan length chosen is increased from standard protocolMethodsThe Monte Carlo‐based software CT‐Expo (G. Stamm (Medizinische Hochschule Hannover, Hannover, Germany) and H.D. Nagel (SASCRAD, Buchholz, Germany)) was used to simulate the effective dose increase as the scanned region of the standard protocol ... hiện toàn bộ
Indeterminate CT pulmonary angiogram: Why and does it matter?
Journal of Medical Imaging and Radiation Oncology - Tập 61 Số 1 - Trang 18-23 - 2017
Ju Hee Yeo, Lifeng Zhou, Remy Lim
AbstractIntroductionThis study assessed the rate of indeterminate CT pulmonary angiogram (CTPA) in a general hospital and evaluated potential contributing factors to an indeterminate CTPA and patients’ eventual clinical outcome.MethodsFour hundred and three consecutive CTPA and their finalised report from 01/08/2012 to 05/12/2012 at Waitemata DHB were reviewed retrospectively. Patient demographics... hiện toàn bộ
The utility of multimodality imaging with CT and MRI in defining rectal tumour volumes for radiotherapy treatment planning: a pilot study
Journal of Medical Imaging and Radiation Oncology - Tập 54 Số 6 - Trang 562-568 - 2010
Jennifer Tan, Daryl Lim Joon, Greg Fitt, M. Wada, Michael Lim Joon, Angelina Mercuri, MaryAnn Dorothy Marr, Michael Chao, Vincent Khoo
AbstractAims: This study compares the volumetric and spatial relationships of gross tumour volume (GTV) derived from CT (CT‐GTV) and GTV derived from MRI (MR‐GTV) to determine the utility of multi‐modality imaging for radiotherapy treatment planning in rectal cancer.Methods and Materials: Fifteen patients with T3 rectal cancer were accrued over 18 months. The male : female ratio was 2:1. The avera... hiện toàn bộ
High‐powered percutaneous microwave ablation of stage I medically inoperable non‐small cell lung cancer: A preliminary study
Journal of Medical Imaging and Radiation Oncology - Tập 57 Số 4 - Trang 466-474 - 2013
Howard Liu, Karin Steinke
AbstractPurposeTo retrospectively evaluate the feasibility and outcome of using high‐powered percutaneous microwave ablation (MWA) in treating medically inoperable early stage non‐small cell lung cancer.Materials and MethodsFrom November 2010 to June 2012, 15 patients underwent CT‐guided MWA of 15 tumours in 16 sessions. One patient had a second ablation session for local tumour progression. Each ... hiện toàn bộ
Comparison of radiation treatment delivery for pancreatic cancer: Linac intensity‐modulated radiotherapy versus helical tomotherapy
Journal of Medical Imaging and Radiation Oncology - Tập 56 Số 3 - Trang 332-337 - 2012
Robert B. Taylor, Krisha J. Opfermann, Brian Jones, Lacy E. Terwilliger, D. G. McDonald, M Ashenafi, Elizabeth Garrett‐Meyer, David T. Marshall
AbstractIntroduction: Intensity‐modulated radiotherapy (IMRT) has been shown to reduce dose to organs at risk (OAR) while adequately treating tumour volume. This study quantitatively compares the dosimetric differences from step‐and‐shoot IMRT compared with helical tomotherapy (HT) for pancreatic head cancer.Methods: Twelve consecutive patients with non‐metastatic, stage T3 or T4, unresectable pan... hiện toàn bộ
Prevalence of significant extracoronary findings on multislice CT coronary angiography examinations and coronary artery calcium scoring examinations
Journal of Medical Imaging and Radiation Oncology - Tập 52 Số 1 - Trang 49-56 - 2008
Yan Mee Law, Jing Huang, K Chen, Cheah Fk, Terrance Chua
SummaryThe purpose of the study was to review the prevalence of significant extracoronary findings in patients who underwent multislice CT coronary angiography examinations and coronary artery calcium scoring examinations. We reviewed the reports of 295 consecutive patients who underwent multislice CT coronary angiography examinations and 140 consecutive patients who had separate coronary calcium ... hiện toàn bộ
Early experience with MR‐guided adaptive radiotherapy using a 1.5 T MR‐Linac: First 6 months of operation using adapt to shape workflow
Journal of Medical Imaging and Radiation Oncology - Tập 66 Số 1 - Trang 138-145 - 2022
Jeremiah de Leon, David Crawford, Zoë Moutrie, Stacy Alvares, Louise Hogan, Claire Pagulayan, Urszula Jelen, Conrad Loo, Jack D. Aylward, Kieran Condon, Nicolle Dunkerley, Monique Y. Heinke, Sandy Sampaio, Kathy Simon, Tania Twentyman, Michael Jameson
AbstractIntroductionThe magnetic resonance linear accelerator (MRL) offers improved soft tissue visualization to guide daily adaptive radiotherapy treatment. This manuscript aims to report initial experience using a 1.5 T MRL in the first 6 months of operation, including training, workflows, timings and dosimetric accuracy.MethodsAll staff received training in MRI safety and MRL workflows. Initial... hiện toàn bộ
Early detection of breast cancer: Overview of the evidence on computer‐aided detection in mammography screening*
Journal of Medical Imaging and Radiation Oncology - Tập 53 Số 2 - Trang 171-176 - 2009
Nehmat Houssami, Rosalind Given-Wilson, Stefano Ciatto
SummaryWe review the evidence on computer‐aided detection (CAD) as an adjunct to mammography interpretation, and discuss the complexity of its impact on decision‐making and potential medico‐legal aspects. CAD prompts the reader to review lesions on the mammogram and re‐evaluate the decision on whether to recall CAD‐prompted findings. Studies show that CAD can improve the sensitivity of a single re... hiện toàn bộ
Impact of e‐scooter injuries on Emergency Department imaging
Journal of Medical Imaging and Radiation Oncology - Tập 63 Số 4 - Trang 461-466 - 2019
Laura J Mayhew, Colleen J. Bergin
AbstractIntroductionSince the introduction of a shared e‐scooter service to Auckland in October there have been multiple media reports of associated injuries, but no quantitation of the number or severity of these injuries, or the impact on hospital emergency department services in Auckland.MethodsWe performed a retrospective chart review on all patients referred to Auckland hospital ED radiology ... hiện toàn bộ
Contrast‐enhanced spectral mammography (CESM) and contrast enhanced MRI (CEMRI): Patient preferences and tolerance
Journal of Medical Imaging and Radiation Oncology - Tập 59 Số 3 - Trang 300-305 - 2015
Max Hobbs, Donna Taylor, Sebastian Buzynski, Rachel Lloyd
AbstractIntroductionContrast‐enhanced spectral mammography (CESM) may have similar diagnostic performance to Contrast‐enhanced MRI (CEMRI) in the diagnosis and staging of breast cancer. To date, research has focused exclusively on diagnostic performance when comparing these two techniques. Patient experience is also an important factor when comparing and deciding on which of these modalities is pr... hiện toàn bộ
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