• Pediatric Gastroenterology, Hepatology & Nutrition
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• v.14 no.2
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• pp.130-136
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• 2011

Plain X-ray radiographs are the first line of investigation taken in the diagnosis of abdominal pathology and are considered an important diagnostic tool to provide guidelines for further imaging studies and comprehensive therapeutic management. Although most abdominal pathology demonstrates non-specific radiologic findings, the plain abdominal radiography is very useful in specific diseases, including certain gastrointestinal anomalies. This review provides image findings of normal plain abdominal radiography and some common abdominal pathology in infants and children.

• Journal of radiological science and technology
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• v.46 no.5
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• pp.409-415
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• 2023

Although pediatric X-ray examinations are continuously increasing, there are not many studies on the radiation exposure to children and X-ray examination assistants according to X-ray Exposure conditions. Accordingly, we measured the radiation exposure dose of pediatric and X-ray examination assistants according to the standard guidelines and clinical average X-ray Exposure conditions when X-ray examination 10-year-old children. The effective dose and organ dose to pediatric were measured using an Dose area production meter and Monte Carlo-based PCXMC program, and the exposure dose of X-ray examination assistants was measured using an ion-chamber. When performing abdominal supine AP projection, the effective dose to children was up to 2.38 times higher under clinical average X-ray Exposure conditions than the standard guidelines. In addition, during abdominal supine AP projection, the radiation exposure dose to the X-ray examination assistants was highest on the hands at 0.0148 ~ 0.0709 mSv, and exposure dose could be reduced by up to 35% when wearing protective gloves. In conclusion, because the X-ray Exposure conditions used in clinical are unnecessarily high, unnecessary medical radiation exposure could be reduced if appropriate X-ray Exposure conditions and the radiation field area were minimized and the assistant wore shielding gloves.

• The Journal of Internal Korean Medicine
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• v.41 no.5
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• pp.734-739
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• 2020

Objectives: The purpose of this study was to propose a diagnostic method for classifying patients with dyspepsia by symptom type. The correlation between symptom types and X-ray findings was studied in 62 patients with indigestion. Methods: In this study, the complaints and abdominal X-ray findings were collected for 62 patients who visited the outpatient Korean medicine clinic. The medical information related to dyspepsia was grouped for similar patients and classified by symptom type. Results: The patients with dyspepsia were classified into three types according to their medical symptoms: Distention type (N=43, 68.3%), Abdominal Pain type (N=16, 25.5%), and Constipation type (N=12, 19.0%). Intestinal fecal findings (80.6%) on x-rays were noted in most of the cases, followed by intestinal gas pattern findings (14.5%). Conclusion: Classifying patients with dyspepsia by symptom types is an appropriate diagnostic method due to the unclear pathophysiology of indigestion and the difficulty in applying a Korean medical dialectic. Irrespective of the symptom types, the large number of fecal material findings (80.6%) on x-rays means an effect on the interior environment of the body where intestinal feces accumulate easily and decreased gastrointestinal motility in patients with indigestion. This can be correlated with "food accumulation (食積)" as intestinal feces are tangible substances. In addition, gas in the intestine increases visceral sensitivity, causing abdominal distention or pain. The gas pattern findings (14.5%) on x-ray were observed in the "Distention type" and "Abdominal pain type," but not in the "Constipation type."

• Journal of radiological science and technology
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• v.41 no.1
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• pp.7-12
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• 2018

Patients who visit the emergency room with urinary stones have difficulty lying down in a supine position due to severe pain when performing the KUB test. The purpose of this study was to find methods to reduce the patients' pain and image distortion, and obtain medical images with high diagnostic values. After checking the standard classification of disease and cause of death, the target group consisted of 121 patients who had clearly distinguished stones from computed tomography. Patients with stones in the ureteralvesical junction were excluded. Qualitative image evaluation was performed by confirming the location of the stone in the computed tomography images. and evaluated the rate of visual discrimination of stones possible through KUB and abdominal plain X-ray. Quantitative image evaluation was performed on the KUB, abdominal plain X-ray images. The transverse process of the first lumbar vertebrae served as the standard point, and the length from this point to the lower part of the stone was measured. Results from looking at the rate of visual discrimination of stones possible through KUB and abdominal plain X-ray showed: 94 patients (77.6%) for KUB images and 91 patients (75.2%) for computed tomography images. The standard deviation for KUB and abdominal X-ray was 3 (2.4%). Comparing and analyzing the location from KUB images and abdominal plain X-ray images, the stone position was 10.1 mm in the kidney, 10.5 mm in the ureteropelvic junction, and 9.7 mm in the ureters. It was shown that the stone moved 10 mm on average with significant statistical difference (P<0.05). In cases where the pain is so severe that it is impossible to perform the test in the supine position, an alternative may be to check the stone position by performing a modified KUB test by having the patient stand in a vertical position. In the future, this will provide convenience to both the examiner and the patient when performing the examination, and it will contribute with its reproducibility.

• Journal of the Korean Society of Radiology
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• v.14 no.3
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• pp.261-270
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• 2020

In diagnostic X-ray examinations, dose assessments for pregnant female and fetus are realistically difficult, and related research is also lacking. Therefore, in this study, the purpose of the simulation was to analyze the dose and fetal dose for pregnant female during abdominal X-ray examination. Based on the data presented in ICRP 89, this study produced phantom reconstructed of the existing prenatal phantom, which was used to analyze the evaluation of the organ dose and fetal dose of pregnant female according to pregnancy week and the difference between the dose of the existing phantom and the reconstructed phantom. As a result, the abdominal X-ray test showed a tendency to show higher doses for organs close to the direction of the source joining. In addition, it was confirmed that fetal doses in posteroanterior position were reduced by more than 65% compared with anteroposterior position.

• Archives of Pharmacal Research
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• v.25 no.6
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• pp.978-983
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• 2002

Small intestinal transit (SIT) has often been regarded as an index of pathophysiological state of postoperative ileus (PI) in rats. The reliability of SIT as an index of PI was examined in the present study. PI was induced via abdominal surgery (i.e., laparotomy with evisceration and manipulation) in rats. For one group of PI-induced rats, SIT of a charcoal test meal was measured. When necessary, the physical state (i.e., severity and site of distension) of the gastrointestinal (GI) tract in each rat was visually examined. For another group of PI-induced rats, abdominal X-ray radiographs were obtained after introducing the barium sulfate suspension. The abdomen was then opened and the physical state of the GI tract was visually examined. The SIT was decreased in most of the PI-induced rats, and the GI distension was observed, with substantial intersubject variations, in all of the PI-induced rats. However, no linear relationship was evident between the SIT and the severity of GI distension (e.g., at 20 h after PI induction). Instead, the severity and site of GI distension could be monitored by the X-ray radiology. Therefore, the use of SIT as an index of PI should be substantially limited.

• Korean Journal of Radiology
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• v.23 no.9
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• pp.854-865
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• 2022

Photon-counting detector (PCD) CT is a new CT technology utilizing a direct conversion X-ray detector, where incident X-ray photon energies are directly recorded as electronical signals. The design of the photon-counting detector itself facilitates improvements in spatial resolution (via smaller detector pixel design) and iodine signal (via count weighting) while still permitting multi-energy imaging. PCD-CT can eliminate electronic noise and reduce artifacts due to the use of energy thresholds. Improved dose efficiency is important for low dose CT and pediatric imaging. The ultra-high spatial resolution of PCD-CT design permits lower dose scanning for all body regions and is particularly helpful in identifying important imaging findings in thoracic and musculoskeletal CT. Improved iodine signal may be helpful for low contrast tasks in abdominal imaging. Virtual monoenergetic images and material classification will assist with numerous diagnostic tasks in abdominal, musculoskeletal, and cardiovascular imaging. Dual-source PCD-CT permits multi-energy CT images of the heart and coronary arteries at high temporal resolution. In this special review article, we review the clinical benefits of this technology across a wide variety of radiological subspecialties.

• Journal of Chest Surgery
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• v.26 no.7
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• pp.568-570
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• 1993

Pulmonary sequestration is a congenital malformation in which a mass of pulmonary tissue is detached from the normal lung and receives its blood supply from a systemic arterys from the thoracic aorta or the abdominal aorta, or occasionally from an intercostal artery. We have experienced the three cases of the intralobar pulmonary sequestration. In the first case a 5 year old male was admitted of productive cough and abdominal distension, and chest film showed pneumonic infiltration in RLL. Second case was 26 year old male patient complaining Rt. chest discomfort and hemoptysis and chest X-ray revealed infiltration in Rt. LLF. Third case was 26 year old male patient whose complaint was hemoptysis. Chest x-ray showed hazy density in Lt. lower lung field. In the all cases, the aortograms were performed and the confirmed diagnosis was intralobar pulmonary seqeustration.

• Advances in pediatric surgery
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• v.13 no.1
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• pp.30-36
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• 2007

Intestinal malrotation is usually asymptomatic and most often is found during abdominal exploration for other surgical diseases. However, a serious complication of intestinal malrotation, midgut volvulus is a true surgical emergency of childhood. The clinical findings, diagnostic procedures, treatment, and prognosis of midgut volvulus were reviewed by a retrospective study. Between 1980 and 2005, 29 patients with midgut volvulus ranging in age from 1 day and 15 years were treated at HanYang University Hospital. Seventy-nine percent of the patients presented before 1 month of age. Midgut volvulus occurred 2 times more frequently in male. The clinical findings were bilious vomiting (96.6 %), irritability (34.5 %), abdominal distention (13.8 %), abdominal pain (10.3 %), and palpable abdominal mass (6.9 %). The diagnosis was made by abdominal simple x-ray (17.2 %), upper gastro-intestinal contrast study (37.9 %), abdominal sonogram (20.7 %), abdominal CT (3.4 %), and abdominal exploration (20.7 %). Among the 29 patients, 5 patients developed gangrene of small intestine due to strangulation and underwent resection of bowel. Two patients died due to sepsis.

• Journal of Trauma and Injury
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• v.25 no.4
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• pp.291-295
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• 2012

Ureteral trauma is rare, accounting for less than 1% of all urologic traumas. However, a missed ureteral injury can result in significant morbidity and mortality. The purpose of this case presentation is to suggest another method for early detection of ureteral injury in blunt traumatic patient. A 47-years-old man was injured in pedestrian traffic accident. He undergone 3-phase abdominal CT initially and had had a short-term follow-up simple. We suspected ureteral injury. Our final diagnosis of a ureteral injury was based on follow-up and antegrade pyeloureterography, he underwent emergency surgery. We detected the ureteral injury early and took a definitive action within 24 hours. In blunt trauma, if abnormal fluid collection in the perirenal retroperitoneal space is detect, the presence of a ureteral injury should be suspected, so a short-term simple X-ray or abdominal CT, within a few hours after initial abdominal CT, may be useful.