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[PMID]:27771423
[Au] Autor:Chrzan R; Panek W; Kuijper CF; Dik P; Klijn AJ; de Mooij KL; de Jong TP
[Ad] Endereço:Department of Pediatric Urology, University Children's Hospital AMC/EKZ, Amsterdam, The Netherlands; Department of Pediatric Urology, UMC/WKZ, Utrecht, The Netherlands. Electronic address: r.chrzan@amc.nl.
[Ti] Título:Short-term Complications After Pyeloplasty in Children With Lower Urinary Tract Anomalies.
[So] Source:Urology;100:198-202, 2017 Feb.
[Is] ISSN:1527-9995
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE: To investigate whether children with lower urinary tract (LUT) anomalies are at greater risk for postoperative complications after laparoscopic pyeloplasty stented with a double-J catheter (JJC). MATERIALS AND METHODS: Prospectively collected data of laparoscopic pyeloplasty (LP) performed between 2006 and 2015 were analyzed. Inclusion criteria are (1) toilet-trained child and (2) unilateral dismembered pyeloplasty stented with a JJC done by the same surgeon. Our pyeloplasty protocol includes cystoscopy and retrograde pyelography. JJC is left in for 3weeks. Asymptomatic patients with infravesical LUT anomalies (a-LUTA) and those with history of LUT symptoms (LUTS) were identified. Any short-term complication was classified according to Clavien-Dindo. Fisher's exact test was used for statistical analysis. RESULTS: Fifty-four children (mean 9.8 years) were included. Ten of 54 patients had LUTS. In 4 of those 10, anatomical infravesical anomaly was found during cystoscopy. Accidental urethral anomaly was found in 11 patients (a-LUTA). The control group (CG) consisted of 33 patients. Postoperative hospital stay ranged from 1 to 8 days (mean 2 days). Overall complication rate was 8 of 54 (14%). Grade 1 complications occurred in 3 patients in the CG. Five patients had grade 3 complications (2 needed replacement of bladder catheter, and 3 had diversion of the upper tract). Those problems occurred in 1 of 10 patients with LUTS and 3 of 11 patients with a-LUTA compared to 1 of 33 in the CG. This difference was statistically significant (P < .05). CONCLUSION: Careful history should be taken in toilet-trained children before pyeloplasty. If any infravesical abnormality is discovered, internal diversion should probably be avoided. Special attention must be paid to bladder function in the postoperative period.
[Mh] Termos MeSH primário: Pelve Renal/cirurgia
Laparoscopia/efeitos adversos
Complicações Pós-Operatórias/epidemiologia
Procedimentos Cirúrgicos Reconstrutivos/efeitos adversos
Obstrução Ureteral/cirurgia
Anormalidades Urogenitais/cirurgia
[Mh] Termos MeSH secundário: Doenças Assintomáticas
Criança
Cistoscopia
Feminino
Seres Humanos
Sintomas do Trato Urinário Inferior/etiologia
Sintomas do Trato Urinário Inferior/cirurgia
Masculino
Stents
Obstrução Ureteral/etiologia
Urografia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161025
[St] Status:MEDLINE


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[PMID]:29215339
[Au] Autor:Uçar M; Karagözlü Akgül A; Kiliç N; Balkan E
[Ad] Endereço:Department of Pediatric Surgery, Division of Pediatric Urology, Uludag University School of Medicine, Bursa, Turkey.
[Ti] Título:The Association of Congenital Urethral Duplication and Double Megalourethra.
[So] Source:Balkan Med J;34(6):572-575, 2017 12 01.
[Is] ISSN:2146-3131
[Cp] País de publicação:Turkey
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Urethral duplication and megalourethra are rare urethral anomalies. However, the concomitance of urethral duplication and double megalourethra has not been reported previously. CASE REPORT: A newborn was presented with penile swelling during voiding. Physical examination revealed a retractable foreskin and two external meatus of a double urethra. Retrograde urethrography demonstrated two complete megalourethras. Urethro-urethrostomy and urethroplasty were performed when the patient was 10 months old. The patient was followed up for one year without any urinary problems and has good cosmetics and urinary continence. CONCLUSION: The concomitance of these two rare anomalies and more importantly its surgical treatment makes this case report unique and valuable.
[Mh] Termos MeSH primário: Uretra/anormalidades
Uretra/cirurgia
Doenças Uretrais/cirurgia
Transtornos Urinários/cirurgia
Procedimentos Cirúrgicos Urológicos
[Mh] Termos MeSH secundário: Anormalidades Múltiplas/diagnóstico por imagem
Anormalidades Múltiplas/fisiopatologia
Anormalidades Múltiplas/cirurgia
Seguimentos
Seres Humanos
Recém-Nascido
Masculino
Doenças Raras
Resultado do Tratamento
Uretra/diagnóstico por imagem
Uretra/fisiopatologia
Doenças Uretrais/diagnóstico por imagem
Doenças Uretrais/fisiopatologia
Transtornos Urinários/diagnóstico por imagem
Transtornos Urinários/fisiopatologia
Urografia
[Pt] Tipo de publicação:CASE REPORTS; JOURNAL ARTICLE
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171208
[St] Status:MEDLINE
[do] DOI:10.4274/balkanmedj.2017.0471


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[PMID]:28931043
[Au] Autor:Kim SH; Park B; Joo J; Joung JY; Seo HK; Chung J; Lee KH
[Ad] Endereço:Department of Urology, Center for Prostate Cancer, Research Institute and Hospital of National Cancer Center, Goyang, Korea.
[Ti] Título:Retrograde pyelography predicts retrograde ureteral stenting failure and reduces unnecessary stenting trials in patients with advanced non-urological malignant ureteral obstruction.
[So] Source:PLoS One;12(9):e0184965, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE: To evaluate predictive factors for retrograde ureteral stent failure in patients with non-urological malignant ureteral obstruction. MATERIALS AND METHODS: Between 2005 and 2014, medical records of 284 malignant ureteral obstruction patients with 712 retrograde ureteral stent trials including 63 (22.2%) having bilateral malignant ureteral obstruction were retrospectively reviewed. Retrograde ureteral stent failure was defined as the inability to place ureteral stents by cystoscopy, recurrent stent obstruction within one month, or non-relief of azotemia within one week from the prior retrograde ureteral stent. The clinicopathological parameters and first retrograde pyelographic findings were analyzed to investigate the predictive factors for retrograde ureteral stent failure and conversion to percutaneous nephrostomy in multivariate analysis with a statistical significance of p < 0.05. RESULTS: Retrograde ureteral stent failure was detected in 14.1% of patients. The mean number of retrograde ureteral stent placements and indwelling duration of the ureteral stents were 2.5 ± 2.6 times and 8.6 ± 4.0 months, respectively. Multivariate analyses identified several specific RGP findings as significant predictive factors for retrograde ureteral stent failure (p < 0.05). The significant retrograde pyelographic findings included grade 4 hydronephrosis (hazard ratio 4.10, 95% confidence interval 1.39-12.09), irreversible ureteral kinking (hazard ratio 2.72, confidence interval 1.03-7.18), presence of bladder invasion (hazard ratio 4.78, confidence interval 1.81-12.63), and multiple lesions of ureteral stricture (hazard ratio 3.46, confidence interval 1.35-8.83) (p < 0.05). CONCLUSION: Retrograde pyelography might prevent unnecessary and ineffective retrograde ureteral stent trials in patients with advanced non-urological malignant ureteral obstruction.
[Mh] Termos MeSH primário: Hidronefrose/etiologia
Neoplasias/terapia
Nefrostomia Percutânea/efeitos adversos
Stents/efeitos adversos
Obstrução Ureteral/terapia
Urografia
[Mh] Termos MeSH secundário: Feminino
Seguimentos
Seres Humanos
Masculino
Meia-Idade
Neoplasias/complicações
Neoplasias/diagnóstico por imagem
Radiografia Abdominal
Estudos Retrospectivos
Taxa de Sobrevida
Obstrução Ureteral/complicações
Obstrução Ureteral/diagnóstico por imagem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171017
[Lr] Data última revisão:
171017
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170921
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0184965


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[PMID]:28830196
[Au] Autor:Sung Tae H; Deuk Jae S; Kyung Sook Y; Ki Choon S; Na Yeon H; Beom Jin P; Min Ju K; Sung Bum C
[Ad] Endereço:1 Department of Radiology, Anam Hospital, Korea University College of Medicine, Seoul, South Korea.
[Ti] Título:Prediction of high-grade ureteral urothelial carcinoma on CT urography.
[So] Source:Br J Radiol;90(1078):20170159, 2017 Oct.
[Is] ISSN:1748-880X
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE: To evaluate the correlation between CT urography (CTU) findings and histological grade of ureteral urothelial carcinoma (UUC), and to identify predictors of high-grade UUC. METHODS: CTU images of 73 patients with pathologically proven UUC via nephroureterectomy were independently reviewed by two radiologists for tumour size, tumour location, hydronephrosis grade, periureteral infiltration, presence of enlarged retroperitoneal lymph nodes and tumour enhancement value. Interobserver agreement was assessed with kappa statistics. Histological grade was classified as either low or high according to the WHO 2004 classification system and pathologic T stage was assessed according to the TNM staging system. Binary logistic regression, Spearman correlation analysis and receiver operating characteristic curves were used to evaluate relationships between CTU findings and histological grade. RESULTS: 58 patients had high-grade UUCs and 15 had low-grade UUCs. Among CTU features, only hydronephrosis grade was significantly correlated with high tumour grade for both readers (p < 0.001). Multivariate logistic regression revealed that hydronephrosis of Grade 3 or higher was a significantly independent predictor of high-grade UUC for both readers (p ≤ 0.004). Interobserver agreement was excellent for hydronephrosis grade (к = 0.862). With the cut-off value of hydronephrosis Grade 3, the sensitivity, specificity and area under the curve for predicting high-grade UUC were, respectively, 88%, 79% and 0.830 for reader 1 and 86%, 80% and 0.763 for reader 2. CONCLUSION: Hydronephrosis of Grade 3 or higher on CTU may be predictive of high-grade UUC. Advances in knowledge: Radical surgery should be considered for UUC causing hydronephrosis of Grade 3 or higher on CTU, even in small tumours without periureteral infiltration.
[Mh] Termos MeSH primário: Carcinoma de Células de Transição/diagnóstico por imagem
Carcinoma de Células de Transição/patologia
Tomografia Computadorizada por Raios X
Neoplasias Ureterais/diagnóstico por imagem
Neoplasias Ureterais/patologia
[Mh] Termos MeSH secundário: Adulto
Idoso
Idoso de 80 Anos ou mais
Feminino
Seres Humanos
Masculino
Meia-Idade
Gradação de Tumores
Valor Preditivo dos Testes
Estudos Retrospectivos
Urografia/métodos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171011
[Lr] Data última revisão:
171011
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:170824
[St] Status:MEDLINE
[do] DOI:10.1259/bjr.20170159


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[PMID]:28614270
[Au] Autor:Fang YQ; Wu JY; Li TC; Zheng HF; Liang GC; Chen YX; Hong XB; Cai WZ; Zang ZJ; Di JM
[Ad] Endereço:aDepartment of Urology, the Third Affiliated Hospital of Sun Yat-Sen University bSchool of Mechanical and Automotive Engineering, South China University of Technology cGuangzhou Sonostar Technologies Co., Limited dDepartment of Infertility and Sexual Medicine, the Third Affiliated hospital of Sun Yat-sen University, Guangzhou, China.
[Ti] Título:Computer tomography urography assisted real-time ultrasound-guided percutaneous nephrolithotomy on renal calculus.
[So] Source:Medicine (Baltimore);96(24):e7215, 2017 Jun.
[Is] ISSN:1536-5964
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:This study aimed to assess the role of pre-designed route on computer tomography urography (CTU) in the ultrasound-guided percutaneous nephrolithotomy (PCNL) for renal calculus.From August 2013 to May 2016, a total of 100 patients diagnosed with complex renal calculus in our hospital were randomly divided into CTU group and control group (without CTU assistance). CTU was used to design a rational route for puncturing in CTU group. Ultrasound was used in both groups to establish a working trace in the operation areas. Patients' perioperative parameters and postoperative complications were recorded.All operations were successfully performed, without transferring to open surgery. Time of channel establishment in CTU group (6.5 ±â€Š4.3 minutes) was shorter than the control group (10.0 ±â€Š6.7 minutes) (P = .002). In addition, there was shorter operation time, lower rates of blood transfusion, secondary operation, and less establishing channels. The incidence of postoperative complications including residual stones, sepsis, severe hemorrhage, and perirenal hematoma was lower in CTU group than in control group.Pre-designing puncture route on CTU images would improve the puncturing accuracy, lessen establishing channels as well as improve the security in the ultrasound-guided PCNL for complex renal calculus, but at the cost of increased radiation exposure.
[Mh] Termos MeSH primário: Cálculos Renais/diagnóstico por imagem
Cálculos Renais/cirurgia
Nefrostomia Percutânea
Tomografia Computadorizada por Raios X
Ultrassonografia de Intervenção
Urografia
[Mh] Termos MeSH secundário: Transfusão de Sangue
Feminino
Seres Humanos
Masculino
Meia-Idade
Imagem Multimodal
Duração da Cirurgia
Complicações Pós-Operatórias
Reoperação
Resultado do Tratamento
[Pt] Tipo de publicação:JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170706
[Lr] Data última revisão:
170706
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:170615
[St] Status:MEDLINE
[do] DOI:10.1097/MD.0000000000007215


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[PMID]:28408468
[Au] Autor:Pauchard JY; Chehade H; Kies CZ; Girardin E; Cachat F; Gehri M
[Ad] Endereço:Department of Pediatrics, Lausanne University Hospital, Lausanne, Switzerland.
[Ti] Título:Avoidance of voiding cystourethrography in infants younger than 3 months with urinary tract infection and normal renal ultrasound.
[So] Source:Arch Dis Child;102(9):804-808, 2017 Sep.
[Is] ISSN:1468-2044
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND AND OBJECTIVE: Urinary tract infection (UTI) represents the most common bacterial infection in infants, and its prevalence increases with the presence of high-grade vesicoureteral reflux (VUR). However, voiding cystourethrography (VCUG) is invasive, and its indication in infants <3 months is not yet defined. This study aims to investigate, in infants aged 0-3 months, if the presence of versus non- bacteria and/or normal or abnormal renal ultrasound (US) could avoid the use of VCUG. METHOD: One hundred and twenty-two infants with a first febrile UTI were enrolled. High-grade VUR was defined by the presence of VUR grade ≥III. The presence of high-grade VUR was recorded using VCUG, and correlated with the presence of /non- UTI and with the presence of normal/abnormal renal US. The Bayes theorem was used to calculate pretest and post-test probability. RESULTS: The probability of high-grade VUR was 3% in the presence of urinary infection. Adding a normal renal US finding decreased this probability to 1%. However, in the presence of non- bacteria, the probability of high-grade VUR was 26%, and adding an abnormal US finding increased further this probability to 55%. CONCLUSIONS: In infants aged 0-3 months with a first febrile UTI, the presence of and normal renal US findings allow to safely avoid VCUG. Performing VCUG only in infants with UTI secondary to non- bacteria and/or abnormal US would save many unnecessary invasive procedures, limit radiation exposure, with a very low risk (<1%) of missing a high-grade VUR.
[Mh] Termos MeSH primário: Infecções por Escherichia coli/etiologia
Rim/diagnóstico por imagem
Infecções Urinárias/etiologia
Refluxo Vesicoureteral/complicações
Refluxo Vesicoureteral/diagnóstico
[Mh] Termos MeSH secundário: Fatores Etários
Algoritmos
Bacteriúria/diagnóstico
Bacteriúria/microbiologia
Feminino
Seres Humanos
Lactente
Recém-Nascido
Masculino
Ultrassonografia
Procedimentos Desnecessários
Bexiga Urinária/diagnóstico por imagem
Infecções Urinárias/microbiologia
Micção
Urografia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170918
[Lr] Data última revisão:
170918
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:170415
[St] Status:MEDLINE
[do] DOI:10.1136/archdischild-2016-311587


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[PMID]:28384174
[Au] Autor:Juri H; Tsuboyama T; Koyama M; Yamamoto K; Nakai G; Nakamoto A; Yamamoto K; Azuma H; Narumi Y
[Ad] Endereço:Department of Radiology, Osaka Medical College, 2-7, Daigaku-machi, Takatsuki, Osaka, Japan.
[Ti] Título:Assessment of the ability of CT urography with low-dose multi-phasic excretory phases for opacification of the urinary system.
[So] Source:PLoS One;12(4):e0174800, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE: To prospectively evaluate the ability of CT urography with a low-dose multi-phasic excretory phase for opacification of the urinary system. MATERIALS AND METHODS: Thirty-two patients underwent CT urography with low-dose multi-phasic s using adaptive iterative dose reduction 3D acquired at 5-, 10-, and 15-minute delays. Opacification scores of the upper urinary tracts and the urinary bladder were assigned for each excretory phase by two radiologists, who recorded whether adequate (>75%) or complete (100%) opacification of the upper urinary tract and urinary bladder was achieved in each patient. Adequate and complete opacification rates of the upper urinary tracts and the urinary bladder were compared among three excretory phases and among combined multi-phasic excretory phases using Cochran's Q test. RESULTS: There was no significant difference among three excretory phases with 5-, 10-, and 15-minute delays in adequate (56.3, 43.8, and 63.5%, respectively; P = 0.174) and complete opacification rates (9.3, 15.6, and 18.7%, respectively; P = 0.417) of the upper urinary tracts. Combined tri-phasic excretory phases significantly improved adequate and complete opacification rates to 84.4% and 43.8%, respectively (P = 0.002). In contrast, there were significant differences among three excretory phases for the rate of adequate (31.3, 84.4, and 93.8%, respectively; P<0.001) and complete opacification (21.9, 53.1, and 81.3%, respectively; P<0.001) of the urinary bladder. Multi-phasic excretory phases did not improve these rates because opacification was always better with a longer delay. CONCLUSION: Although multi-phasic acquisition of excretory phases is effective at improving opacification of the upper urinary tracts, complete opacification is difficult even with tri-phasic acquisition.
[Mh] Termos MeSH primário: Tomografia Computadorizada por Raios X/métodos
Bexiga Urinária/diagnóstico por imagem
Urografia/métodos
[Mh] Termos MeSH secundário: Adulto
Idoso
Idoso de 80 Anos ou mais
Feminino
Seres Humanos
Masculino
Meia-Idade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170907
[Lr] Data última revisão:
170907
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170407
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0174800


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[PMID]:28345995
[Au] Autor:Vilalta L; Altuzarra R; Espada Y; Dominguez E; Novellas R; Martorell J
[Ti] Título:Description and comparison of excretory urography performed during radiography and computed tomography for evaluation of the urinary system in healthy New Zealand White rabbits (Oryctolagus cuniculus).
[So] Source:Am J Vet Res;78(4):472-481, 2017 Apr.
[Is] ISSN:1943-5681
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE To evaluate the usefulness of excretory urography performed during radiography (REU) and CT (CTEU) in healthy rabbits, determine timings of urogram phases, and compare sensitivities of REU and CTEU for detection of these phases. ANIMALS 13 New Zealand White rabbits (Oryctolagus cuniculus). PROCEDURES Rabbits were screened for signs of systemic and urinary tract disease. An REU examination of each was performed, followed ≥ 5 days later by a CTEU examination. Contrast images from each modality were evaluated for quality of opacification and intervals between initiation of contrast medium administration and detection of various urogram phases. RESULTS Excretory urograms of excellent diagnostic quality were achieved with both imaging modalities. For all rabbits, the nephrographic phase of the urogram appeared in the first postcontrast REU image (obtained between 34 and 40 seconds after initiation of contrast medium administration) and at a median interval of 20 seconds in CTEU images. The pyelographic phase began at a median interval of 1.63 minutes with both imaging modalities. Contrast medium was visible within the urinary bladder at a median interval of 2.20 minutes. Median interval to the point at which the nephrogram and pyelogram were no longer visible in REU images was 8 hours and 2.67 hours, respectively. The CTEU technique was better than the REU technique for evaluating renal parenchyma. CONCLUSIONS AND CLINICAL RELEVANCE Findings suggested that REU and, particularly, CTEU may be valuable tools for the diagnosis of renal and urinary tract disease in rabbits; however, additional evaluation in diseased rabbits is required.
[Mh] Termos MeSH primário: Tomografia Computadorizada por Raios X/veterinária
Sistema Urogenital/diagnóstico por imagem
Urografia/veterinária
[Mh] Termos MeSH secundário: Animais
Meios de Contraste
Feminino
Seres Humanos
Rim/diagnóstico por imagem
Masculino
Coelhos
Tomografia Computadorizada por Raios X/métodos
Doenças Urológicas/diagnóstico por imagem
Doenças Urológicas/veterinária
[Pt] Tipo de publicação:EVALUATION STUDIES; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Contrast Media)
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170526
[Lr] Data última revisão:
170526
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170328
[St] Status:MEDLINE
[do] DOI:10.2460/ajvr.78.4.472


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[PMID]:28301210
[Au] Autor:Kaza RK; Ananthakrishnan L; Kambadakone A; Platt JF
[Ad] Endereço:1 Department of Radiology, University of Michigan Hospitals, 1500 E Medical Center Dr, UH B1 502E, Ann Arbor, MI 48109.
[Ti] Título:Update of Dual-Energy CT Applications in the Genitourinary Tract.
[So] Source:AJR Am J Roentgenol;208(6):1185-1192, 2017 Jun.
[Is] ISSN:1546-3141
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE: Dual-energy CT (DECT) is being increasingly used for abdominal imaging because it provides incremental benefit of material characterization without significant increase in radiation dose. This article provides an overview of current DECT techniques and use of DECT in urinary tract imaging for assessment of renal masses and urinary calculi characterization and in CT urography. CONCLUSION: Incorporation of DECT into clinical practice and use of its material characterization capabilities in urinary tract imaging enable characterization of urinary calculi and incidental renal lesions and can reduce radiation dose by allowing generation of virtual unenhanced images.
[Mh] Termos MeSH primário: Neoplasias Renais/diagnóstico por imagem
Imagem Radiográfica a Partir de Emissão de Duplo Fóton
Tomografia Computadorizada por Raios X
Cálculos Urinários/diagnóstico por imagem
Urografia/métodos
[Mh] Termos MeSH secundário: Medicina Baseada em Evidências
Seres Humanos
Radiografia Abdominal
Reprodutibilidade dos Testes
Sensibilidade e Especificidade
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170828
[Lr] Data última revisão:
170828
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:170317
[St] Status:MEDLINE
[do] DOI:10.2214/AJR.16.17742


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[PMID]:28281789
[Au] Autor:Han D; Ma G; Wei L; Ren C; Zhou J; Shen C; He T
[Ad] Endereço:1 College of Medical Technology, Shaanxi University of Traditional Chinese Medicine, Xianyang, Shaanxi, China.
[Ti] Título:Preliminary study on the differentiation between parapelvic cyst and hydronephrosis with non-calculous using only pre-contrast dual-energy spectral CT scans.
[So] Source:Br J Radiol;90(1073):20160632, 2017 May.
[Is] ISSN:1748-880X
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE: To investigate the value of using the quantitative parameters from only the pre-contrast dual-energy spectral CT imaging for distinguishing between parapelvic cyst and hydronephrosis with non-calculous (HNC). METHODS: This retrospective study was approved by the institutional review board. 28 patients with parapelvic cyst and 24 patients with HNC who underwent standard pre-contrast and multiphase contrast-enhanced dual-energy spectral CT imaging were retrospectively identified. The parapelvic cyst and HNC were identified using the contrast-enhanced scans, and their CT number in the 70-keV monochromatic images, effective atomic number (Z ), iodine concentration (IC) and water concentration in the pre-contrast images were measured. The slope of the spectral curve (λ) was calculated. The difference in the measurements between parapelvic cyst and HNC was statistically analyzed using SPSS v. 19.0 (IBM Corp., New York, NY; formerly SPSS Inc., Chicago, IL) statistical software. Receiver-operating characteristic analysis was performed to assess the diagnostic performance. RESULTS: The CT numbers in the 70-keV images, Z and IC values were statistically different between parapelvic cyst and HNC (all p < 0.05). The sensitivity, specificity and accuracy of these parameters for distinguishing between parapelvic cyst and HNC were 89.2%, 73.3% and 82.1%; 86.5%, 43.3% and 67.2%; 91.9%, 40.0% and 68.7%; and 64.9%, 73.3% and 83.6%, respectively, and the combined specificity was 92.9%. There was no statistical difference in λ between the two groups (p > 0.05). CONCLUSION: The quantitative parameters obtained in the pre-contrast dual-energy spectral CT imaging may be used to differentiate between parapelvic cyst and HNC. Advances in knowledge: The pre-contrast dual-energy spectral CT scans may be used to screen parapelvic cysts for patients who are asymptomatic, thereby avoiding contrast-enhanced CT or CT urography examination for these patients to reduce ionizing radiation dose and contrast dose.
[Mh] Termos MeSH primário: Hidronefrose/diagnóstico por imagem
Doenças Renais Císticas/diagnóstico por imagem
Interpretação de Imagem Radiográfica Assistida por Computador/métodos
Imagem Radiográfica a Partir de Emissão de Duplo Fóton/métodos
Tomografia Computadorizada por Raios X/métodos
[Mh] Termos MeSH secundário: Adolescente
Adulto
Idoso
Idoso de 80 Anos ou mais
Meios de Contraste
Diagnóstico Diferencial
Feminino
Seres Humanos
Rim/diagnóstico por imagem
Masculino
Meia-Idade
Reprodutibilidade dos Testes
Estudos Retrospectivos
Sensibilidade e Especificidade
Urografia
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Contrast Media)
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170922
[Lr] Data última revisão:
170922
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:170311
[St] Status:MEDLINE
[do] DOI:10.1259/bjr.20160632



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