Evaluation of bowel distension and bowel wall visualization according to patient positions during administration of oral contrast media for CT enterography

Lee, Seul Bi; Kim, Seung Ho; Son, Jung Hee; Baik, Ji Yeon

doi:10.1259/bjr.20170352

Cited by 3 publications

(4 citation statements)

References 22 publications

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“…[32,33] The Mann-Whitney U test (M-W) was used to compare 2 independent groups, presenting Z-value of statistics (Z) and P coefficient (P). [34][35][36] A 5% inference error and a significance level of P .05 indicating statistically significant differences or dependencies were accepted. The statistical analysis was conducted using the Statistica v. 13.1 software (StatSoft, Poland) in the Department of Medical Informatics and Statistics with E-learning Lab of our University.…”

Section: Discussionmentioning

confidence: 99%

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Ultrasound evaluation of long-term outcome in boys operated on due to testicular torsion

Osemlak¹,

Jędrzejewski

Woźniak

et al. 2021

Medicine

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We aimed at verifying the usefulness of spectral Doppler ultrasonography in determining development of the testis after torsion in boys.The study involved 28 patients and 30 control cases divided into 3 developmental groups: pre-pubertal, early pubertal, and pubertal. It presented surgical management in testicular torsion (TT), volume, and echogenicity of testes, as well as peak-systolic velocity (PSV), end-diastolic velocity (EDV), and vascular resistance index (RI) in the capsular and intra-testicular arteries, regarding developmental groups, detorsed testes, uninvolved ones, and testes in the control group.Orchiectomy was performed in 13 boys with complete TT, in 11 lasting for over 24 hours, and in 2 lasting for 9 and 10 hours, respectively. Orchiectomy mainly involved patients aged up to 6 years, who at the time of the follow-up ultrasound belonged to the pre-pubertal group.There is no clear correlation between the type of testicular torsion, its duration, and the echogenicity of the testis. Testicular torsion has a negative effect on the volume of detorsed testis with compensatory hypertrophy of the uninvolved testis. The study represents a new approach to the issue of long-term gonadal blood supply abnormalities after treatment of testicular torsion in childhood.

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Section: Discussionmentioning

confidence: 99%

“…The distribution of the examined parameters was evaluated on the basis of the Shapiro-Wilk W test [32,33] . The Mann–Whitney U test (M–W) was used to compare 2 independent groups, presenting Z -value of statistics ( Z ) and P coefficient ( P ) [34–36] …”

Section: Methodsmentioning

confidence: 99%

Ultrasound evaluation of long-term outcome in boys operated on due to testicular torsion

Osemlak¹,

Jędrzejewski

Woźniak

et al. 2021

Medicine

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“…The extent of bowel distension was evaluated using the following grading scale: 1 = all bowel loops are collapsed without luminal separation, and the walls cannot be recognized; 2 = adequate bowel distension is visible in less than 50%; 3 = adequate bowel distension is visible in 50–80% of the segments; 4 = more than 80% of bowel loops are adequately distended; and 5 = all bowel loops in the segment are adequately distended. Adequate bowel distension was defined as bowel diameter more than 1.5 cm ( 16 ). For consistent interpretation, jejunal loops were defined as small bowel loops located on the upper and left sides of the abdominal wall, with thicker plicae circulares and densely arranged folds.…”

Section: Methodsmentioning

confidence: 99%

“…For consistent interpretation, jejunal loops were defined as small bowel loops located on the upper and left sides of the abdominal wall, with thicker plicae circulares and densely arranged folds. The ileal loops were characterized by thinner circular plicae with loose arrangement, mainly in the lower compartment of the abdomen ( 16 ).…”

Section: Methodsmentioning

confidence: 99%

Impact of deep learning-based reconstruction and anti-peristaltic agent on the image quality and diagnostic performance of magnetic resonance enterography comparing single breath-hold single-shot fast spin echo with and without anti-peristaltic agent

Park,

Lee,

Lee

et al. 2024

Quant Imaging Med Surg

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Background While anti-peristaltic agents are beneficial for high quality magnetic resonance enterography (MRE), their use is constrained by potential side effects and increased examination complexity. We explored the potential of deep learning-based reconstruction (DLR) to compensate for the absence of anti-peristaltic agent, improve image quality and reduce artifact. This study aimed to evaluate the need for an anti-peristaltic agent in single breath-hold single-shot fast spin-echo (SSFSE) MRE and compare the image quality and artifacts between conventional reconstruction (CR) and DLR. Methods We included 45 patients who underwent MRE for Crohn’s disease between October 2021 and September 2022. Coronal SSFSE images without fat saturation were acquired before and after anti-peristaltic agent administration. Four sets of data were generated: SSFSE CR with and without an anti-peristaltic agent (CR-A and CR-NA, respectively) and SSFSE DLR with and without an anti-peristaltic agent (DLR-A and DLR-NA, respectively). Two radiologists independently reviewed the images for overall quality and artifacts, and compared the three images with DLR-A. The degree of distension and inflammatory parameters were scored on a 5-point scale in the jejunum and ileum, respectively. Signal-to-noise ratio (SNR) levels were calculated in superior mesenteric artery (SMA) and iliac bifurcation level. Results In terms of overall quality, DLR-NA demonstrated no significant difference compared to DLR-A, whereas CR-NA and CR-A demonstrated significant differences (P<0.05, both readers). Regarding overall artifacts, reader 1 rated DLR-A slightly better than DLR-NA in four cases and rated them as identical in 41 cases (P=0.046), whereas reader 2 demonstrated no difference. Bowel distension was significantly different in the jejunum (Reader 1: P=0.046; Reader 2: P=0.008) but not in the ileum. Agreements between the images (Reader 1: ĸ=0.73–1.00; Reader 2: ĸ=1.00) and readers (ĸ=0.66 for all comparisons) on inflammation were considered good to excellent. The sensitivity, specificity, and accuracy in diagnosing inflammation in the terminal ileum were the same among DLR-NA, DLR-A, CR-NA and CR-A (94.42%, 81.83%, and 89.69 %; and 83.33%, 90.91%, and 86.21% for Readers 1 and 2, respectively). In both SMA and iliac bifurcation levels, SNR of DLR images exhibited no significant differences. CR images showed significantly lower SNR compared with DLR images (P<0.001). Conclusions SSFSE without anti-peristaltic agents demonstrated nearly equivalent quality to that with anti-peristaltic agents. Omitting anti-peristaltic agents before SSFSE and adding DLR could improve the scanning outcomes and reduce time.

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The norm of the small bowel on computed tomography

Егоров¹,

Koshelev

Беляев

et al. 2020

Medicinskaâ vizualizaciâ

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Purpose of the study. Determination of normal thickness and contrast of the wall of the small bowel (SB) depending on the phase of digestion on computed tomography (CT).Material and methods. We examined 358 patients aged 20 to 88 years. According to the results of the survey, patients are divided into two groups. The main group consisted of patients examined on an empty stomach (n = 329), and an additional group consisted of patients examined after eating (n = 29). A CT scan of the abdomen was performed with a cut-off thickness of not more than 2 mm and a bolus contrast enhancement (CE) with a nonionic contrast medium. The results of measurements of the wall thickness of the SB and the intensity of its contrast were subjected to grouping and statistical processing.Results and discussion. According to the results of our study, the average value of the wall thickness of the SB is normally 3.1 ± 1.2 mm, with a tendency to decrease this indicator in the distal direction. The regularities of changes in the thickness and intensity of contrasting of the wall of the SB in the norm depending on the age and the last meal were determined. With increasing age, diffuse thinning of the SB wall occurs. Normally, after eating, there is a thickening of the SB wall to 4.6 ± 1.8 mm and an increase in the intensity of contrast, mediated by an increase in blood supply, with a density gradient of + 10%. After CE, the proximal sections of the SB are contrasting brighter than the distal. The gradient of contrastion of the proximal and distal parts of the SB increases after meals, is maximum in young patients and decreases with age.Conclusion. In order to reliably differentiate the pathological thickening and change the contrasting of the SB wall from the physiological one, it is imperative to ascertain the time and nature of the last meal and to take into account the age of the patient. In "non-contact" patients, an indirect orientation is possible according to the degree of filling of the stomach and SB.

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Evaluation of bowel distension and bowel wall visualization according to patient positions during administration of oral contrast media for CT enterography

Cited by 3 publications

References 22 publications

Ultrasound evaluation of long-term outcome in boys operated on due to testicular torsion

Ultrasound evaluation of long-term outcome in boys operated on due to testicular torsion

Impact of deep learning-based reconstruction and anti-peristaltic agent on the image quality and diagnostic performance of magnetic resonance enterography comparing single breath-hold single-shot fast spin echo with and without anti-peristaltic agent

The norm of the small bowel on computed tomography

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