Imaging protocols for CT urography: results of a consensus conference from the French Society of Genitourinary Imaging

ConclusionThis expert-based consensus conference provides recommendations to standardise the imaging protocol for computed tomography urography.Key Points•To improve excretory phase imaging, an intravenous injection of furosemide should be performed before the injection of iodinated contrast medium.•Systematic oral or intravenous hydration is not necessary to improve excretory phase imaging.•The choice between single-bolus and split-bolus protocols depends on the context, but split-bolus protocols should be favoured whenever possible to decrease patient irradiation.
Source: European Radiology - Category: Radiology Source Type: research

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Purpose of review Accurate staging of bladder cancer is essential to guide appropriate management. In this review, we discuss the principles, applications and performance of multiparametric MRI (mpMRI) and PET-computer tomography (PET-CT) for local and distant staging of bladder cancer. Recent findings Bladder mpMRI has a high diagnostic performance in local staging of bladder cancer, superior to other imaging modalities. It can accurately differentiate muscle invasive bladder cancer (MIBC) from non-MIBC (NMIBC), as well as ≤T2 from ≥T3 stages. mpMRI can be used to assess pelvic lymph nodes, although its sensiti...
Source: Current Opinion in Urology - Category: Urology & Nephrology Tags: BLADDER CANCER: Edited by Juan Palou and Óscar Rodríguez Faba Source Type: research
CONCLUSION: The use of RGP prior to ureteral stent placement for an obstructing ureteral stone with concomitant UTI was not associated with unfavorable clinical outcomes in our retrospective series. While these findings support the safety of RGP in this setting, prospective trials are warranted. PMID: 32065871 [PubMed - in process]
Source: Canadian Journal of Urology - Category: Urology & Nephrology Tags: Can J Urol Source Type: research
Objectives Our study sought to reevaluate the safety and diagnostic efficacy of iobitridol as a nonionic contrast medium after almost 20 years of use. Materials and methods This noninterventional postmarketing surveillance noncontrolled, multicenter (168 centers in Germany) study enrolled 94,960 patients receiving intravenous or intra-arterial iobitridol. The majority of the adjusted population (n = 92,550, 98.2%) underwent either computed tomography examination (n = 46,502, 49.3%) or intravenous urography (n = 46,048, 48.8%). A standardized questionnaire was used to ascertain patient's information, known risk factors...
Source: Investigative Radiology - Category: Radiology Tags: Original Articles Source Type: research
This study aims to investigate and discuss the frequency and dose trends of radiological examinations in Europe. European Commission (EC) launched projects to gain information for medical exposures in 2004 and 2011. In this study, the European Commission Radiation Protection (RP) reports No. 154 and 180 have been reviewed. The RP 154 countries ’ data were extracted from both reports, and the average variation trend of the number of examinations and effective doses were studied. According to the results, plain radiography and fluoroscopy witnessed a reduction in the frequency and effective dose per examination. Nevert...
Source: La Radiologia Medica - Category: Radiology Source Type: research
Due to the special anatomy and physiology of the avian urinary system, the value of diagnostic imaging techniques differs from the use in mammals. The diagnostic imaging methods regularly used in practice to evaluate the avian kidneys are often limited to traditional radiography and ultrasonography, whereas other imaging modalities (urography, scintigraphy, computed tomography, MRI) are rarely used. Furthermore endoscopy may be performed and taking a renal biopsy may be considered. The article describes common indications for imaging techniques used to diagnose urinary tract disease as well as its anatomic and pathologic demonstration.
Source: Veterinary Clinics of North America: Exotic Animal Practice - Category: Veterinary Research Authors: Source Type: research
Radiographs can be used to easily visualize common types of urinary calculi in all parts of the urinary tract. Positive-contrast excretory urography and cystourethrography are sensitive to diseases within the ureters and urethra, most commonly obstruction. Ultrasound is widely available and noninvasive and can be used to evaluate renal architecture, ureteral dilation, urinary bladder wall disease, and urolithiasis. Computed tomography is increasing in availability and provides a large amount of cross-sectional information quickly and noninvasively. Multiple imaging modalities can be used to estimate or quantify glomerular filtration rate.
Source: Veterinary Clinics of North America: Exotic Animal Practice - Category: Veterinary Research Authors: Source Type: research
If you want residents to moan, start out the conversation with “when I was a resident….” Well, when I was a resident, computed tomography (CT) scans had just been introduced into the hospital, ultrasound was a rarely used procedure, and magnetic resonance imaging and positron emission tomography were still in the future. We did tomograms, pyelograms, veno grams, and various scans of the spleen, liver, and brain. The imaging options available today are overwhelming. Three-dimensional reproductions of any part of the body; bedside ultrasounds of the brain, heart, abdomen, and pelvis; and scans that show fu...
Source: The Journal of Emergency Medicine - Category: Emergency Medicine Authors: Tags: Book and Other Media Reviews Source Type: research
AbstractUrothelial carcinoma of the upper urinary tract (UUT) is a relatively uncommon genitourinary malignancy, accounting for about 5 –7% of urothelial tumors. The significant features of this tumor are multifocality and high rate of recurrence. Computed tomography urography (CTU) has replaced excretory urography (EU) and retrograde pyelography (RP) for imaging of upper tract urothelial carcinoma. While many studies have confirm ed high sensitivity (88–100%) and specificity (93–100%) of CTU, an optimized CT protocol is of critical importance in screening, staging, and post-operative follow-up of patient...
Source: Abdominal Imaging - Category: Radiology Source Type: research
Purpose of review The purpose of this review is to summarize the problem of asymptomatic microscopic hematuria (AMH) in women and the most recent publications on the topic. Recent findings Urologic malignancy is rarely associated with AMH in low-risk women. Screening for urologic malignancy includes upper urinary tract imaging and cystoscopy. Renal ultrasound is a cost-effective first-line imaging modality in patients with AMH. Multiphasic computed tomography (CT) urography increases healthcare costs, the risk of secondary malignancy due to cumulative radiation exposure, and the discovery of incidental benign findings...
Source: Current Opinion in Obstetrics and Gynecology - Category: OBGYN Tags: UROGYNECOLOGY: Edited by Kavita Mishra Source Type: research
CONCLUSION: The prognosis has also considerably improved and renal trauma rarely result in death or loss of the kidney nowadays. PMID: 31668829 [PubMed - as supplied by publisher]
Source: Progres en Urologie - Category: Urology & Nephrology Tags: Prog Urol Source Type: research
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