Ultrasound<i>vs</i>CT for the detection of ureteric stones in patients with renal colic

Patlas, Michael N.; Farkas, Amicur; Fisher, Daniel A.C.; Zaghal, Ibrahim; Hadas-Halpern, Irit

doi:10.1259/bjr.74.886.740901

Cited by 118 publications

(131 citation statements)

References 11 publications

Supporting

Mentioning

105

Contrasting

Unclassified

Order By: Relevance

“…If there was a suspicion of hydronephrosis, (Table 1) then they were re-examined after evacuation of the bladder. This was done to exclude the possibility of pseudohydronephrosis [2]. The proximal ureter was best visualised in a coronal oblique view, using the kidney as a window.…”

Section: Methodsmentioning

confidence: 99%

Magnetic Resonance Urography in Obstructive Uropathy

Sen

Mohan

Verma³

2008

Medical Journal Armed Forces India

View full text Add to dashboard Cite

Intravenous urography has been used as the primary imaging technique for the diagnostic evaluation of urinary tract for several years. With development of more competitive imaging modalities [1] and apprehension about the adverse effects of contrast media and radiation, intravenous urography is going to disrepute. Conditions that arise outside the urinary tract also result in urinary tract obstruction and may go unnoticed with intravenous urography alone. It is therefore important, to determine the cause and level of obstruction by an effective protocol. Material and MethodsPatients with complaint of vague abdominal pain were examined by ultrasonography (USG) and 25 of those with features of dilated pelvi calyceal system were taken up for further evaluation by intra venous urography (IVU), computerised tomography (CT) and magnetic resonance urography (MRU). Images were reviewed by radiologists who were blinded to the results of the other investigative modalities.Ultrasonography of the kidneys, ureter and bladder region was done with a 3.5/ 5 MHz curved array probe of LOGIC 200 pro series -GE system. Patients were examined with full bladder. If there was a suspicion of hydronephrosis, (Table 1) then they were re-examined after evacuation of the bladder. This was done to exclude the possibility of pseudohydronephrosis [2]. The proximal ureter was best visualised in a coronal oblique view, using the kidney as a window. The distal ureter was seen supra-pubically through the full bladder. The urinary bladder was scanned trans-abdominally.After obtaining the plain radiograph of the abdomen in an adequately prepared patient, ionic/ non-ionic contrast medium (Trazograf 76%/ Omnipaque 300) was injected intravenously (0.3-0.6 mg/Kg body weight) for intravenous urography. Nonionic contrast medium (Omnipaque 300mg/ml) was used in children, elderly, asthmatics, diabetics and other high-risk patients. Serial radiographs of the abdomen were obtained at five minutes, 15 minutes and 30 minutes after intravenous injection of contrast in supine position. If no obstruction was detected, the examination was concluded with a full and post void radiograph of the bladder. Additional delayed radiographs were obtained up to 24 hours when indicated.CT was performed on single slice helical system (Hi Speed CT/I GE ). Non-contrast CT (NCCT) was done to start with which was followed by contrast enhanced CT (CECT). Ionic / non-ionic intravenous contrast medium (Trazograf 76% / Omnipaque 300) was administered as the bolus dose of 0.3 -0.6 mg per Kg body weight by hand injection. Consecutive slice thickness of 4-10 mm axial scans was obtained. Delayed scans were done depending upon the cases. Oral water soluble iodinated contrast was administered, when staging of disease in carcinoma cervix or urinary bladder was required. Diagnosis of calculus was made when high-density lesion (HU 200-600) was detected along the course of the urinary tract. The level of obstruction was established after studying the serial scans and reconstructed 3D images.MRU...

show abstract

Section: Methodsmentioning

confidence: 99%

Magnetic Resonance Urography in Obstructive Uropathy

Sen

Mohan

Verma³

2008

Medical Journal Armed Forces India

View full text Add to dashboard Cite

show abstract

“…Many authors reported that sonography has limited role in diagnosis of ureteral calculi, but these data were from the 1980s and 1990s and this opinion is conflicted by recent studies (10)(11)(12). There is a recent study that has reported the sensitivity and specificity of sonography, 93% and 95% respectively, by definite demonstration of lithiasis with new sonographic equipments and technologies (13).In our study, gray-scale ultrasound examination alone detected ureteral calculi in 65.4% of patients presented to ER with low specificity. The twinkling artifact was first described in 1996 by Rahmouni et al, as a sign generated by a highly reflective object that, despite being stationary, would generate a rapid alteration between red and blue when interrogated with color Doppler sonography (4).…”

Section: Discussionmentioning

confidence: 99%

Value of color doppler ultrasound, kub and urinalysis in diagnosis of renal colic due to ureteral stones

Abdel-Gawad¹,

Kadasne²,

Anjikar³

et al. 2014

Int. braz j urol.

View full text Add to dashboard Cite

show abstract

“…However, a higher level of skill, knowledge and familiarity with US fi ndings is needed when the stones are not at the ureteral junctions, or whenever alternative diagnoses must be made. 9 Ultrasound is very sensitive in depicting the anatomical changes associated with obstruction of the collecting system. 17 Nonetheless, we found that the sensitivity of US was only 22% in comparison with NCT, which is inadequate for routine use.…”

Section: Ureterovesical 47%mentioning

confidence: 99%

“…[5][6][7][8] Transabdominal ultrasound (US) has the advantages of being universally available, not exposing the patient to radiation and being independent of kidney function. [9][10] Because of these advantages, US is preferred by referring clinicians for evaluating acute renal colic.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Comparison between ultrasound and noncontrast helical computed tomography for identification of acute ureterolithiasis in a teaching hospital setting

et al. 2007

View full text Add to dashboard Cite

CONTEXT AND OBJECTIVE: Recent studies have shown noncontrast computed tomography (NCT) to be more effective than ultrasound (US) for imaging acute ureterolithiasis. However, to our knowledge, there are few studies directly comparing these techniques in an emergency teaching hospital setting. The objectives of this study were to compare the diagnostic accuracy of US and NCT performed by senior radiology residents for diagnosing acute ureterolithiasis; and to assess interobserver agreement on tomography interpretations by residents and experienced abdominal radiologists. DESIGN AND SETTING: Prospective study of 52 consecutive patients, who underwent both US and NCT within an interval of eight hours, at Hospital São Paulo. METHODS: US scans were performed by senior residents and read by experienced radiologists. NCT scan images were read by senior residents, and subsequently by three abdominal radiologists. The interobserver variability was assessed using the kappa statistic. RESULTS: Ureteral calculi were found in 40 out of 52 patients (77%). US presented sensitivity of 22% and specificity of 100%. When collecting system dilatation was associated, US demonstrated 73% sensitivity, 82% specificity. The interobserver agreement in NCT analysis was very high with regard to identification of calculi, collecting system dilatation and stranding of perinephric fat. CONCLUSIONS: US has limited value for identifying ureteral calculi in comparison with NCT, even when collecting system dilatation is present. Residents and abdominal radiologists demonstrated excellent agreement rates for ureteral calculi, identification of collecting system dilatation and stranding of perinephric fat on NCT.

show abstract

UltrasoundvsCT for the detection of ureteric stones in patients with renal colic

Cited by 118 publications

References 11 publications

Magnetic Resonance Urography in Obstructive Uropathy

Magnetic Resonance Urography in Obstructive Uropathy

Value of color doppler ultrasound, kub and urinalysis in diagnosis of renal colic due to ureteral stones

Comparison between ultrasound and noncontrast helical computed tomography for identification of acute ureterolithiasis in a teaching hospital setting

Contact Info

Product

Resources

About