共查询到6条相似文献,搜索用时 0 毫秒
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Richard M Mendelson Diane E Arnold‐Reed Melvyn Kuan Andrew W Wedderburn James E Anderson Gregory Sweetman Max K Bulsara Julian Mander 《Journal of Medical Imaging and Radiation Oncology》2003,47(1):22-28
The aim of this study was to compare non‐enhanced spiral CT (NECT) and intravenous pyelography (IVP) in patients with suspected acute renal colic. Two‐hundred patients presenting to the Emergency Department with suspected acute renal colic were randomized into groups undergoing NECT or IVP. The main outcome measures were diagnostic utility, incidence of alternative diagnoses, requirement for further imaging, length of hospital stay, urological intervention rates, radiation dosage and costs. Non‐enhanced spiral CT was better than IVP in making a definitive diagnosis of ureteric calculus or of recent calculus passage (65/102 or 66% vs 42/98 or 41%; P = 0.003). Calculi were missed in two patients in the IVP group. Two patients in each group had alternative diagnoses by initial imaging. There was no difference in the length of hospital stay or intervention rate. More plain X‐rays during admission and more IVPs during follow up were performed in the NECT group. Effective radiation dosages were 2.97 mSv (IVP) and up to 5 mSv (NECT). Non‐enhanced spiral CT provided greater diagnostic utility in this randomized comparison but no difference in measured outcomes. The incidence of alternative diagnoses was low, probably due to patient selection. Financial costs for each modality are comparable in a public tertiary hospital. Radiation dosages are higher for NECT and, for this reason, it might be appropriate to consider limiting NECT use to patients who have do not have classical symptoms of renal colic, to older patients and those with a contraindication to the administration of intravenous contrast media. 相似文献
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Accurate tissue characterization in low‐dose CT imaging with pure iterative reconstruction 下载免费PDF全文
Kevin P Murphy Patrick D McLaughlin Maria Twomey Vincent E Chan Fiachra Moloney Adrian J Fung Faimee E Chan Tafline Kao Siobhan B O'Neill Benjamin Watson Owen J O'Connor Michael M Maher 《Journal of Medical Imaging and Radiation Oncology》2017,61(2):190-196
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Inter‐ and intra‐fraction motion in stereotactic body radiotherapy for spinal and paraspinal tumours using cone‐beam CT and positional correction in six degrees of freedom 下载免费PDF全文
Renee Finnigan Brock Lamprecht Tamara Barry Kimberley Jones Joshua Boyd Andrew Pullar Bryan Burmeister Matthew Foote 《Journal of Medical Imaging and Radiation Oncology》2016,60(1):112-118
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Complete metabolic response (CMR) in positron emission tomography–computed tomography (PET‐CT) scans may have prognostic significance in patients with marginal zone lymphomas (MZL) 下载免费PDF全文
Ji Hyun Park Shin Kim Jin Sook Ryu Sang‐wook Lee Chan‐sik Park Jooryung Huh Cheolwon Suh 《Hematological oncology》2018,36(1):56-61
Although clinical use of positron emission tomography–computed tomography (PET‐CT) scans is well established in aggressive lymphomas, its prognostic value in marginal zone lymphoma (MZL) remains yet unclear. Hence, we investigated potential role of PET‐CT in predicting MZL patients' outcomes following systemic chemotherapy. A total of 32 patients with MZL who received first‐line chemotherapy were included in the analysis. They all underwent pretreatment, interim, and posttreatment PET‐CT scans. The primary objective was to evaluate the role of complete metabolic response (CMR) in posttreatment PET‐CT scans in predicting progression‐free survival (PFS). Compared with non‐CMR group, 5‐year PFS rate was significantly higher in patients who achieved CMR in posttreatment PET‐CT (54.2% vs 0.0%, P = .003) and also in patients gaining CMR in interim PET‐CT scans (62.5% vs 15.6%, P = .026). Interestingly, early CMR group, who achieved and maintained CMR in both interim and posttreatment PET‐CT scans, showed significantly higher 5‐year PFS than those with delayed or never CMR group (62.5% vs 37.5% vs 0%, P = .008). Therefore, interim and/or posttreatment CMR can be prognostic at least in these subsets of patients with MZL treated with chemotherapy. 相似文献
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FDG‐PET/CT and MRI for Evaluation of Pathologic Response to Neoadjuvant Chemotherapy in Patients With Breast Cancer: A Meta‐Analysis of Diagnostic Accuracy Studies 下载免费PDF全文
Sara Sheikhbahaei Tyler J. Trahan Jennifer Xiao Mehdi Taghipour Esther Mena Roisin M. Connolly Rathan M. Subramaniam 《The oncologist》2016,21(8):931-939